ITC Holdings Corp. Form 10-K Annual Report Filed 2022-02-11

Table of Contents

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)


☑	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
	For the fiscal year ended	December 31, 2021


☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission File Number: 001-32576

ITC HOLDINGS CORP.

(Exact Name of Registrant as Specified in Its Charter)


Michigan						32-0058047
(State or Other Jurisdiction of Incorporation or Organization)						(I.R.S. Employer Identification No.)

27175 Energy Way

Novi, Michigan 48377

(Address of Principal Executive Offices, Including Zip Code)

(248) 946-3000

(Registrant’s Telephone Number, Including Area Code)

Securities registered pursuant to Section 12(b) of the Act:


Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
None	None	None

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes o No þ

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes þ No o

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes o No þ* *The registrant is a voluntary filer and has not been subject to the filing requirements under Section 13 or 15(d) of the Securities Exchange Act of 1934 for the preceding 12 months.

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes þ No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer

Accelerated filer

Non-accelerated filer

Smaller reporting company

Emerging growth company

☑

☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No þ

The aggregate market value of the registrant’s common stock held by non-affiliates on June 30, 2021 was $0.

All shares of outstanding common stock of ITC Holdings Corp. are held by its parent company, ITC Investment Holdings Inc., which is an indirect subsidiary of Fortis Inc. There were 224,203,112 shares of the registrant’s common stock, no par value, outstanding as of February 10, 2022.

DOCUMENTS INCORPORATED BY REFERENCE

None.

Table of Contents

ITC Holdings Corp.

Form 10-K for the Fiscal Year Ended December 31, 2021

INDEX


		Page
PART I		7
Item 1.	Business	7
Item 1A.	Risk Factors	15
Item 1B.	Unresolved Staff Comments	22
Item 2.	Properties	22
Item 3.	Legal Proceedings	23
Item 4.	Mine Safety Disclosures	23

PART II		23
Item 5.	Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	23
Item 6.	[Reserved]	23
Item 7.	Management's Discussion and Analysis of Financial Condition and Results of Operations	23
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	38
Item 8.	Financial Statements and Supplementary Data	41
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	84
Item 9A.	Controls and Procedures	84
Item 9B.	Other Information	84
Item 9C.	Disclosure Regarding Foreign Jurisdictions That Prevent Inspections	84

PART III		84
Item 10.	Directors, Executive Officers and Corporate Governance	84
Item 11.	Executive Compensation	88
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	116
Item 13.	Certain Relationships and Related Transactions, and Director Independence	117
Item 14.	Principal Accountant Fees and Services	118

PART IV		119
Item 15.	Exhibits and Financial Statement Schedules	119
Item 16.	Form 10-K Summary	131
Signatures		132

Table of Contents

Unless otherwise noted or the context requires, all references in this report to:

ITC Holdings Corp. and its subsidiaries

•“ITC Great Plains” are references to ITC Great Plains, LLC, a wholly-owned subsidiary of ITC Holdings;

•“ITC Holdings” are references to ITC Holdings Corp. and not any of its subsidiaries;

•“ITC Interconnection” are references to ITC Interconnection LLC, a wholly-owned subsidiary of ITC Holdings;

•“ITC Midwest” are references to ITC Midwest LLC, a wholly-owned subsidiary of ITC Holdings;

•“ITCTransmission” are references to International Transmission Company, a wholly-owned subsidiary of ITC Holdings;

•“METC” are references to Michigan Electric Transmission Company, LLC, a wholly-owned subsidiary of MTH;

•“MISO Regulated Operating Subsidiaries” are references to ITCTransmission, METC and ITC Midwest together;

•“MTH” are references to Michigan Transco Holdings, LLC, the sole member of METC and a wholly-owned subsidiary of ITC Holdings;

•“Regulated Operating Subsidiaries” are references to ITCTransmission, METC, ITC Midwest, ITC Great Plains and ITC Interconnection together; and

•“Company”, “we,” “our” and “us” are references to ITC Holdings together with all of its subsidiaries.

Other definitions

•“2017 Omnibus Plan” are references to the Company’s February 27, 2017 long-term equity incentive plan as amended July 10, 2017 and February 4, 2020;

•“ACPB” are references to an award under the annual corporate performance bonus plan;

•“ADIT” are references to accumulated deferred income tax;

•“AFUDC” are references to an allowance for funds used during construction;

•“ALJ” are references to an administrative law judge;

•“Ancillary Services Agreement” are references to the Amended and Restated Purchase and Sale Agreement for Ancillary Services entered into by METC and Consumers Energy dated as of April 29, 2002;

•“AOCI” are references to accumulated other comprehensive income or (loss);

•“ARAM” are references to the average rate assumption method of amortization;

•“CIA” are references to the Coordination and Interconnection Agreement entered into by ITCTransmission and DTE Electric dated as of February 28, 2003;

•“Consumers Energy” are references to Consumers Energy Company, a wholly-owned subsidiary of CMS Energy Corporation;

•“COVID-19” are references to the Coronavirus disease that the World Health Organization declared a pandemic in March 2020;

•“D.C. Circuit Court” are references to the U.S. Court of Appeals for the District of Columbia Circuit;

•“DCF” are references to discounted cash flow;

•“DOE” are references to the Department of Energy;

•“DTE Electric” are references to DTE Electric Company, a wholly-owned subsidiary of DTE Energy;

•“DTE Energy” are references to DTE Energy Company;

Table of Contents

•“DTIA” are references to the Distribution-Transmission Interconnection Agreement entered into by ITC Midwest and IP&L dated as of December 17, 2007 and amended and restated effective as of December 1, 2016;

•“DT Interconnection Agreement” are references to the Amended and Restated Distribution-Transmission Interconnection Agreement entered into by METC and Consumers Energy dated April 1, 2001 and most recently amended and restated effective as of January 1, 2015;

•“Easement Agreement” are references to the Amended and Restated Easement Agreement entered into by METC and Consumers Energy dated April 29, 2002 and as further supplemented;

•“Eiffel” are references to Eiffel Investment Pte Ltd, a private limited company duly organized and validly existing under the laws of Singapore that is the GIC subsidiary that is a minority investor in ITC Investment Holdings and successor to Finn Investment Pte Ltd;

•“ESPP” are references to the Fortis Amended and Restated 2012 Employee Share Purchase Plan;

•“Exchange Act” are references to the Securities Exchange Act of 1934, as amended;

•“Executive Omnibus Plan” are references to the Company’s February 4, 2020 long-term equity incentive plan;

•“FASB” are references to the Financial Accounting Standards Board;

•“FERC” are references to the Federal Energy Regulatory Commission;

•“Formula Rate” are references to a FERC-approved formula template used to calculate an annual revenue requirement;

•“Fortis” are references to Fortis Inc.;

•“FortisUS” are references to FortisUS Inc., an indirect subsidiary of Fortis;

•“FPA” are references to the Federal Power Act;

•“GAAP” are references to accounting principles generally accepted in the United States of America;

•“Generator Interconnection Agreement” are references to the Amended and Restated Generator Interconnection Agreement entered into by Consumers Energy and METC dated as of April 29, 2002 and most recently amended effective as of November 1, 2018;

•“GIAs” are references to generator interconnection agreements;

•“GIC” are references to GIC Private Limited;

•“GIOA” are references to the Generator Interconnection and Operation Agreement entered into by DTE Electric and ITCTransmission dated as of February 28, 2003;

•“Initial Complaint” are references to a November 2013 complaint to the FERC under Section 206 of the FPA regarding the base ROE;

•“IP&L” are references to Interstate Power and Light Company, an Alliant Energy Corporation subsidiary;

•“IRS” are references to the Internal Revenue Service;

•“ISO” are references to Independent System Operators;

•“ITC Investment Holdings” are references to ITC Investment Holdings Inc., a majority owned indirect subsidiary of Fortis in which GIC has an indirect, passive, non-voting minority ownership interest;

•“KCC” are references to the Kansas Corporation Commission;

•“kV” are references to kilovolts (one kilovolt equaling 1,000 volts);

•“kW” are references to kilowatts (one kilowatt equaling 1,000 watts);

•“LBA” are references to a Local Balancing Authority;

Table of Contents

•“LGIA” are references to the Large Generator Interconnection Agreement entered into by ITC Midwest, IP&L, and MISO dated as of December 20, 2007 and amended as of August 2, 2017;

•“LIBOR” are references to the London Interbank Offered Rate;

•“May 2020 Order” are references to an order issued by the FERC on May 21, 2020 regarding MISO ROE Complaints;

•“MECS” are references to the Michigan Electric Coordinated Systems;

•“Mid-Kansas” are references to Mid-Kansas Electric Company LLC;

•“Mid-Kansas Agreement” are references to an Amended and Restated Maintenance Agreement entered into by Mid-Kansas and ITC Great Plains dated as of August 24, 2010, and most recently amended effective as of March 6, 2017;

•“MISO” are references to the Midcontinent Independent System Operator, Inc., a FERC-approved RTO which oversees the operation of the bulk power transmission system for a substantial portion of the Midwestern United States and Manitoba, Canada, and of which ITCTransmission, METC and ITC Midwest are members;

•“MISO ROE Complaints” are references to the Initial Complaint and the Second Complaint;

•“MOA” are references to the Master Operating Agreement entered into by ITCTransmission and DTE Electric dated as of February 28, 2003;

•“Moody’s” are references Moody’s Investor Service, Inc.;

•“MVPs” are references to multi-value projects, which have been determined by MISO to have regional value while meeting near-term system needs;

•“MW” are references to megawatts (one megawatt equaling 1,000,000 watts);

•“NERC” are references to the North American Electric Reliability Corporation;

•“NOLs” are references to net operating loss carryforwards for income taxes;

•“NOPR” are references to a Notice of Proposed Rulemaking issued by the FERC;

•“November 2018 Order” are references to an order issued by the FERC on November 15, 2018 regarding MISO ROE Complaints;

•“November 2019 Order” are references to an order issued by the FERC on November 21, 2019 regarding MISO ROE Complaints;

•“NYSE” are references to the New York Stock Exchange;

•“Operating Agreement” are references to the Amended and Restated Operating Agreement entered into by Consumers Energy and METC dated as of April 29, 2002;

•“OSA” are references to the Operations Services Agreement for 34.5 kV Transmission Facilities entered into by ITC Midwest and IP&L effective as of January 1, 2011;

•“PBU” are references to a performance-based unit;

•“PCBs” are references to polychlorinated biphenyls;

•“PJM” are references to PJM Interconnection LLC, a FERC-approved RTO which oversees the operation of the bulk power transmission system for a substantial portion of the Eastern United States, and of which ITC Interconnection is a member;

•“ROE” are references to return on equity;

•“RSGM” are references to the Reverse South Georgia Method of amortization;

•“RTO” are references to Regional Transmission Organizations;

•“SBU” are references to a service-based unit;

Table of Contents

•“SEC” are references to the Securities and Exchange Commission;

•“Second Complaint” are references to an additional complaint filed on February 12, 2015 with the FERC under Section 206 of the FPA regarding the base ROE;

•“September 2016 Order” are references to an order issued by the FERC on September 28, 2016 regarding the Initial Complaint;

•“Shareholders Agreement” are references to the Amended and Restated Shareholders’ Agreement, dated as of January 28, 2021 by and among the Company, ITC Investment Holdings, FortisUS, Eiffel (as successor to Finn Investment Pte Ltd), and any other person that becomes a shareholder of ITC Investment Holdings pursuant to such agreement;

•“SPP” are references to Southwest Power Pool, Inc., a FERC-approved RTO which oversees the operation of the bulk power transmission system for a substantial portion of the South Central United States, and of which ITC Great Plains is a member;

•“S&P” are references to S&P Global Ratings;

•“TCJA” are references to the Tax Cuts and Jobs Act of 2017, a comprehensive tax reform bill enacted on December 22, 2017;

•“TO” are references to transmission owner;

•“ULCS” are references to Utility Lines Construction Services, LLC; and

•“USD” are references to the United States dollar

Table of Contents

PART I

ITEM 1. BUSINESS.

Overview

ITC Holdings provides safe and reliable electric transmission service to connect consumers to more sustainable and cost-effective energy resources. ITC Holdings continues to make investments in a modernized grid to maintain reliability and accommodate future demands as our economy and lifestyles become increasingly dependent on electricity.

Our business consists primarily of the electric transmission operations of our Regulated Operating Subsidiaries. Through our Regulated Operating Subsidiaries, we own and operate high-voltage electric transmission systems in Michigan’s Lower Peninsula and portions of Iowa, Minnesota, Illinois, Missouri, Kansas and Oklahoma that transmit electricity from generating stations to local distribution facilities connected to our transmission systems.

Our Regulated Operating Subsidiaries’ primary operating responsibilities include maintaining, improving and expanding their transmission systems to meet their customers’ ongoing needs, scheduling outages on system elements to allow for maintenance and construction, maintaining appropriate system voltages and monitoring flows over transmission lines and other facilities to ensure physical limits are not exceeded.

Our Regulated Operating Subsidiaries earn revenues for the use of their electric transmission systems by their customers, which include investor-owned utilities, municipalities, cooperatives, power marketers and alternative energy suppliers. As independent transmission companies, our Regulated Operating Subsidiaries are subject to rate regulation only by the FERC, and our cost-based rates are discussed in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Cost-Based Formula Rates with True-Up Mechanism” as well as in Note 5 to the consolidated financial statements.

ITC Holdings is a wholly-owned subsidiary of ITC Investment Holdings. Fortis owns a majority indirect equity interest in ITC Investment Holdings, with GIC holding an indirect, passive, non-voting equity interest of 19.9%.

Development of Business

As we move toward a cleaner, sustainable and electrified economy, the power grid will need to be transformed and modernized. Technology deployment and innovation are occurring at an accelerated rate within our industry, so we are actively identifying and investing in infrastructure required to meet evolving system needs and energy policy objectives. Our long-term growth plan includes ongoing investments in our current regulated transmission systems and the identification of incremental strategic projects primarily located in and around our service territories.

We expect to invest approximately $4.0 billion from 2022 through 2026 at our Regulated Operating Subsidiaries. Included in this amount are capital expenditures to: (1) maintain and replace our current transmission infrastructure to enhance system reliability and accommodate load growth; (2) interconnect new renewable generation resources; (3) upgrade physical and technological grid security to protect critical infrastructure; and (4) expand access to electricity markets to reduce the overall cost of delivered energy to customers.

Refer to “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Capital Investment and Operating Results Trends” for additional details about our long-term capital investments. Refer to the discussion of risks associated with our strategic investment opportunities in “Item 1A. Risk Factors.”

Operations

As transmission-only companies, our Regulated Operating Subsidiaries function as conduits, allowing for power from generators to be transmitted to local distribution systems either entirely through our Regulated Operating Subsidiaries’ own systems or in conjunction with neighboring transmission systems. Third parties then transmit power through these local distribution systems to end-use consumers. The transmission of electricity by our Regulated Operating Subsidiaries is a central function to the provision of electricity to

Table of Contents

residential, commercial and industrial end-use consumers. The operations performed by our Regulated Operating Subsidiaries fall into the following categories:

•asset planning;

•engineering;

•asset protection and performance;

•cyber security operations center; and

•real time operations.

Asset Planning

The Asset Planning group performs the role of detailing the required transmission infrastructure needed to support system changes and economic opportunities. System changes can arise from different points of origin including load growth, load shifts, or new points of interconnection; generation retirements or additions; operational needs; and system dynamic stability needs. Likewise, the Asset Planning group explores opportunities to better utilize the transmission system through economic planning by providing access, via transmission expansion projects, to lower cost energy. However, the core responsibility of the Asset Planning group is proactively anticipating the future demands placed upon the transmission system and developing corrective action plans for any deficiencies. Corrective action plans are developed to ensure compliance with NERC’s reliability standards. Additionally, the Asset Planning group seeks opportunities to further develop a resilient transmission system.

Transmission infrastructure plans are submitted as discrete projects into the MISO and SPP planning processes. As the regional planning authorities, MISO and SPP administer open and transparent processes through which the submitted projects are vetted. MISO and SPP produce transmission expansion plans, which include projects to be constructed by their members, including our MISO Regulated Operating Subsidiaries and ITC Great Plains.

Engineering

The Engineering group is composed of the Design, Capital Projects and Asset Management teams. The Engineering group works with outside contractors to perform various aspects of our design, construction and maintenance, but retains internal technical experts who have experience with respect to the key elements of the transmission system such as substations, lines, equipment and protective relaying systems.

Design — The Design team is responsible for the design of our transmission systems and setting the standards for equipment used on our systems.

Capital Projects — The Capital Projects team is responsible for project and construction management for capital projects, which includes the construction of new transmission infrastructure as well as asset renewal projects.

Asset Management — The Asset Management team performs the following activities:

•manages our vegetation management program;

•provides engineering technical support to the field;

•specifies, maintains and troubleshoots the protection and controls system that is used to protect and monitor our transmission infrastructure; and

•develops and tracks preventative maintenance to promote safe and reliable systems adhering to mandatory requirements of the NERC and the FERC.

By performing preventive maintenance on our assets, we can minimize the need for reactive maintenance, resulting in improved reliability and cost savings for our customers. Our Regulated Operating Subsidiaries contract with ULCS, which is a division of Asplundh Tree Expert Co., to perform the majority of their maintenance. The agreement with ULCS provides us with access to an experienced and scalable workforce with knowledge of our system at an established rate.

Table of Contents

Asset Protection and Performance

The Asset Protection and Performance group is responsible for safety, human performance, security, and emergency preparedness and response. Given the inherent hazardous nature of the utilities industry, we proactively work to ensure that all personnel are free to perform in a safe and secure environment. Our focus is to not compromise the safety of our employees, contractors or the public in the course of providing the most reliable electricity transmission services. We maintain a safety program that includes proactive measures rooted in human performance tools to achieve that focus. Our emergency response plans ensure that we are prepared for a crisis and can maintain continuity of our business and service during said crisis. We operate a security command center from our headquarters facility in Michigan that monitors our most critical assets on a continuous basis. The security command center also gathers intelligence and works with our government and industry partners to prevent threats to our assets.

Cyber Security Operations Center

The Cyber Security Operations Center protects ITC’s reputation and brand by securing critical infrastructure, data, and computing systems from threat actors. We protect vital infrastructure by developing, refining, and continually delivering a comprehensive cyber security program while helping our stakeholders meet their business objectives. As the threat landscape becomes increasingly sophisticated and expansive, we continue to evolve our defensive strategy. We improve this strategy by deploying new technology, continuing education of our user community, and advancing our protections against ongoing cyber threats. We leverage threat intelligence and external industry practices for continuous improvement and refinement of our cyber security program.

Real Time Operations

System Operations — From our operations facilities in Michigan, transmission system operators continuously monitor the performance of the transmission systems of our Regulated Operating Subsidiaries, using software and communication systems to perform analysis to plan for contingencies and maintain security and reliability following any unplanned events on the system. Transmission system operators are also responsible for the switching and protective tagging function, taking equipment in and out of service to ensure capital construction projects and maintenance programs can be completed safely and reliably.

Local Balancing Authority Operator — Under the functional control of MISO, ITCTransmission and METC operate their electric transmission systems as a combined LBA area, known as MECS. From our operations facilities in Michigan, our employees perform the LBA functions as outlined in MISO’s Balancing Authority Agreement. These functions include actual interchange data administration and verification as well as MECS LBA area emergency procedure implementation and coordination. Besides ITCTransmission and METC, our other Regulated Operating Subsidiaries are not responsible for LBA functions for their respective assets.

Operating Contracts

Our Regulated Operating Subsidiaries have various operating contracts, including numerous interconnection agreements with generation and transmission providers that address terms and conditions of interconnection. The following significant agreements exist at our Regulated Operating Subsidiaries:

ITCTransmission

DTE Electric operates an electric distribution system that is interconnected with ITCTransmission’s transmission system. A set of three operating contracts sets forth the terms and conditions related to DTE Electric’s and ITCTransmission’s interconnected systems. These contracts include the following:

Master Operating Agreement. The MOA governs the primary day-to-day operational responsibilities of ITCTransmission and DTE Electric. The MOA identifies control area coordination services that ITCTransmission provides to DTE Electric and certain generation-based support services that DTE Electric is required to provide to ITCTransmission.

Generator Interconnection and Operation Agreement. The GIOA established, re-established and maintains the direct electricity interconnection of DTE Electric’s electricity generating assets with ITCTransmission’s transmission system for the purpose of transmitting electric power from and to the electricity generating facilities.

Table of Contents

Coordination and Interconnection Agreement. The CIA outlines the rights, obligations and responsibilities of ITCTransmission and DTE Electric regarding, among other things, the operation and interconnection of DTE Electric’s distribution system and ITCTransmission’s transmission system, and the construction of new facilities or modification of existing facilities. Additionally, the CIA allocates costs for operation of supervisory, communications and metering equipment.

METC

Consumers Energy operates an electric distribution system that is interconnected with METC’s transmission system. METC is a party to a number of operating contracts with Consumers Energy that govern the operations and maintenance of its transmission system. These contracts include the following:

Amended and Restated Operating Agreement. Under the Operating Agreement, METC is responsible for maintaining and operating its transmission system, providing Consumers Energy with information and access to its transmission system and related books and records, administering and performing the duties of control area operator (that is, the entity exercising operational control over the transmission system) and, if requested by Consumers Energy, building connection facilities necessary to permit interaction with new distribution facilities built by Consumers Energy.

Amended and Restated Purchase and Sale Agreement for Ancillary Services. Since METC does not own any generating facilities, it must procure ancillary services from third party suppliers, such as Consumers Energy. Currently, under the Ancillary Services Agreement, METC pays Consumers Energy for providing certain generation-based services necessary to support the reliable operation of the bulk power grid, such as voltage support and generation capability and capacity to balance loads and generation.

Amended and Restated Distribution-Transmission Interconnection Agreement. The DT Interconnection Agreement provides for the interconnection of Consumers Energy’s distribution system with METC’s transmission system and defines the continuing rights, responsibilities and obligations of the parties with respect to the use of certain of their own and the other party’s properties, assets and facilities.

Amended and Restated Generator Interconnection Agreement. The Generator Interconnection Agreement specifies the terms and conditions under which Consumers Energy and METC maintain the interconnection of Consumers Energy’s generation resources and METC’s transmission assets.

ITC Midwest

IP&L operates an electric distribution system that interconnects with ITC Midwest’s transmission system. ITC Midwest is a party to a number of operating contracts with IP&L that govern the operations and maintenance of their respective systems. These contracts include the following:

Distribution-Transmission Interconnection Agreement. The DTIA governs the rights, responsibilities and obligations of ITC Midwest and IP&L, with respect to the use of certain of their own and the other party’s property, assets and facilities and the construction of new facilities or modification of existing facilities.

Large Generator Interconnection Agreement. ITC Midwest, IP&L and MISO entered into the LGIA in order to establish, re-establish and maintain the direct electricity interconnection of IP&L’s electricity generating assets with ITC Midwest’s transmission system for the purposes of transmitting electric power from and to the electricity generating facilities.

Operations Services Agreement For 34.5 kV Transmission Facilities. ITC Midwest and IP&L entered into the OSA under which IP&L performs certain operations functions for ITC Midwest’s 34.5 kV transmission system. The OSA provides that when ITC Midwest upgrades 34.5 kV facilities to higher operating voltages it may notify IP&L of the change and the OSA is no longer applicable to those facilities.

Table of Contents

ITC Great Plains

Amended and Restated Maintenance Agreement. Mid-Kansas and ITC Great Plains have entered into the Mid-Kansas Agreement pursuant to which Mid-Kansas has agreed to perform various field operations and maintenance services related to certain ITC Great Plains assets.

ITC Interconnection

ITC Interconnection acquired certain transmission assets from a merchant generating company and placed a 345kV transmission line in service. As a result, ITC Interconnection is a TO in PJM and is subject to rate regulation by the FERC. The revenues earned by ITC Interconnection are based on its facilities reimbursement agreement with the merchant generating company.

Regulatory Environment

Many regulators and public policy makers support the need for further investment in the transmission grid. The growth and changing mix of electricity generation, wholesale power sales and consumption combined with historically inadequate transmission investment have resulted in significant transmission constraints across the United States and increased stress on aging equipment. These problems will continue without increased investment in transmission infrastructure. Transmission system investments can also increase system reliability and reduce the frequency of power outages. Such investments can reduce transmission constraints and improve access to lower cost generation resources, resulting in a lower overall cost of delivered electricity for end-use consumers. The DOE has established the Office of Electricity that focuses on working with reliability experts from the power industry, state governments and their Canadian counterparts to improve grid reliability and increase investment in the country’s electric infrastructure.

The FERC requires TOs to comply with certain reliability standards and may take enforcement actions for violations, including the imposition of substantial fines. NERC is responsible for developing and enforcing these mandatory reliability standards. We continually assess our transmission systems against standards established by NERC, as well as the standards of applicable regional entities under NERC that have been delegated certain authority for the purpose of proposing and enforcing reliability standards.

Finally, utility holding companies are subject to FERC regulations related to access to books and records in addition to the requirement of the FERC to review and approve mergers and consolidations involving utility assets and holding companies in certain circumstances.

Federal Regulation

As electric transmission companies, our Regulated Operating Subsidiaries charge rates that are regulated by the FERC. The FERC is an independent regulatory commission within the DOE that regulates the interstate transmission and certain wholesale sales of natural gas, the transmission of oil and oil products by pipeline and the transmission and wholesale sales of electricity in interstate commerce. The FERC also administers accounting and financial reporting regulations and standards of conduct for the companies it regulates.

Revenue Requirement Calculations and Cost Sharing for Projects with Regional Benefits

The cost-based Formula Rates used by our Regulated Operating Subsidiaries include revenue requirement calculations for various types of projects. Network revenues continue to be the largest component of revenues recovered through our Formula Rates. However, regional cost sharing revenues have experienced long-term growth as a result of projects that have been identified as having regional benefits and are therefore eligible for regional cost recovery. Separate calculations of revenue requirement are performed for projects that have been approved for regional cost sharing.

We have projects that are eligible for regional cost sharing under the MISO tariff, such as certain network upgrade projects, and the MVPs. Additionally, certain projects at ITC Great Plains are eligible for recovery through a region-wide charge in the SPP tariff.

State Regulation

The regulatory agencies in the states where our Regulated Operating Subsidiaries’ assets are located do not have jurisdiction over our rates or terms and conditions of service. However, they typically have jurisdiction over siting of transmission facilities and related matters as described below. Additionally, we are subject to the

Table of Contents

regulatory oversight of various state environmental quality departments for compliance with any state environmental standards and regulations.

ITCTransmission, METC and ITC Interconnection

Michigan

The Michigan Public Service Commission has jurisdiction over the siting of certain transmission facilities. Additionally, ITCTransmission, METC and ITC Interconnection have the right as independent transmission companies to condemn property in the state of Michigan for the purposes of building or maintaining transmission facilities.

ITCTransmission, METC and ITC Interconnection are also subject to the regulatory oversight of the Michigan Department of Environmental Quality, the Michigan Department of Natural Resources and certain local authorities for compliance with all environmental standards and regulations.

ITC Midwest

Iowa

The Iowa Utilities Board has the power of supervision over the construction, operation and maintenance of transmission facilities in Iowa by any entity, which includes the power to issue franchises. Iowa law further provides that any entity granted a franchise by the Iowa Utilities Board is vested with the power of condemnation in Iowa to the extent the Iowa Utilities Board approves and deems necessary for public use. A city has the power, pursuant to Iowa law, to grant a franchise to erect, maintain and operate transmission facilities within the city, which franchise may regulate the conditions required and manner of use of the streets and public grounds of the city and may confer the power to appropriate and condemn private property.

ITC Midwest also is subject to the regulatory oversight of certain state agencies (including the Iowa Department of Natural Resources) and certain local authorities with respect to the issuance of environmental, highway, railroad and similar permits.

Minnesota

The Minnesota Public Utilities Commission has jurisdiction over the construction, siting and routing of new transmission lines or upgrades of existing lines through Minnesota’s Certificate of Need and Route Permit Processes. Transmission companies are also required to participate in the state’s Biennial Transmission Planning Process and are subject to the state’s preventative maintenance requirements. Pursuant to Minnesota law, ITC Midwest has the right as an independent transmission company to condemn property in the state of Minnesota for the purpose of building new transmission facilities.

ITC Midwest is also subject to the regulatory oversight of the Minnesota Pollution Control Agency, the Minnesota Department of Natural Resources, the Minnesota Public Utilities Commission in conjunction with the Department of Commerce and certain local authorities for compliance with applicable environmental standards and regulations.

Illinois

The Illinois Commerce Commission exercises jurisdiction over the siting of new transmission lines through its requirements for Certificates of Public Convenience and Necessity and Right-Of-Way acquisition that apply to construction of new or upgraded facilities.

ITC Midwest is also subject to the regulatory oversight of the Illinois Environmental Protection Agency, the Illinois Department of Natural Resources, the Illinois Pollution Control Board and certain local authorities for compliance with all environmental standards and regulations.

Missouri

Because ITC Midwest is a “public utility” and an “electrical corporation” under Missouri law, the Missouri Public Service Commission has jurisdiction to determine whether ITC Midwest may operate in such capacity. The Missouri Public Service Commission also exercises jurisdiction with regard to other non-rate matters affecting its sole Missouri asset such as transmission substation construction, general safety and the transfer of the franchise or property.

Table of Contents

ITC Midwest is also subject to the regulatory oversight of the Missouri Department of Natural Resources for compliance with all environmental standards and regulations relating to this transmission line.

Wisconsin

ITC Midwest is a “public utility” and independent TO in Wisconsin. The Public Service Commission of Wisconsin granted ITC Midwest a certificate of authority to transact public utility business in the state. The Public Service Commission of Wisconsin also recognized ITC Holdings as a public utility holding company under Wisconsin statutes.

The Public Service Commission of Wisconsin exercises jurisdiction over the siting of new transmission lines through the issuance of certificates of authority and certificates of public convenience and necessity. Upon receipt of such certificates for a transmission project, ITC Midwest has condemnation authority as a foreign transmission provider under Wisconsin law. ITC Midwest is also subject to the jurisdiction of certain local and state agencies, including the Wisconsin Department of Natural Resources, relating to environmental and road permits.

ITC Great Plains

Kansas

ITC Great Plains is a “public utility” and an “electric utility” in Kansas pursuant to state statutes. The KCC issued an order approving the issuance of a limited certificate of convenience to ITC Great Plains for the purposes of building, owning and operating SPP transmission projects in Kansas. In addition to its certificate of authority, the KCC has jurisdiction over the siting of electric transmission lines.

ITC Great Plains is also subject to the regulatory oversight of the Kansas Department of Health and Environment for compliance with all environmental standards and regulations relating to the construction phase of any transmission line.

Oklahoma

ITC Great Plains has approval from the Oklahoma Corporation Commission to operate in Oklahoma, pursuant to Oklahoma statutes as an electric public utility providing only transmission services. The Oklahoma Corporation Commission does not exercise jurisdiction over the siting of any transmission lines.

ITC Great Plains is subject to the regulatory oversight of Oklahoma Department of Environmental Quality for compliance with environmental standards and regulations relating to construction of certain proposed transmission lines.

Sources of Revenue

See “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Significant Components of Results of Operations — Revenues” for a discussion of our principal sources of revenue.

Seasonality

The cost-based Formula Rates in effect for our Regulated Operating Subsidiaries, as discussed in “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Cost-Based Formula Rates with True-Up Mechanism,” mitigate the seasonality of net income for our Regulated Operating Subsidiaries. Our Regulated Operating Subsidiaries accrue or defer revenues to the extent that the actual revenue requirement for the reporting period is higher or lower, respectively, than the amounts billed relating to that reporting period. For example, to the extent that amounts billed are less than our revenue requirement for a reporting period, a revenue accrual is recorded for the difference and the difference results in no net income impact.

Operating cash flows are seasonal at our MISO Regulated Operating Subsidiaries, in that cash received for revenues is typically higher in the summer months when peak load is higher.

Table of Contents

Principal Customers

Our principal transmission service customers are DTE Electric, Consumers Energy and IP&L, which accounted for approximately 21.5%, 23.5% and 24.7%, respectively, of our consolidated billed revenues for the year ended December 31, 2021. One or more of these customers together have consistently represented a significant percentage of our operating revenue. This portion of total billed revenues of DTE Electric, Consumers Energy and IP&L include the collection of 2019 revenue accruals and deferrals and exclude any amounts for the 2021 revenue accruals and deferrals that were included in our 2021 operating revenues but will not be billed to our customers until 2023. Refer to “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations — Cost-Based Formula Rates with True-Up Mechanism” for a discussion on the difference between billed revenues and operating revenues. Our remaining revenues were generated from providing service to other entities such as alternative energy suppliers, power marketers and other wholesale customers that provide electricity to end-use consumers and from transaction-based capacity reservations. Nearly all of our revenues are from transmission customers in the United States. Although we may recognize allocated revenues from time to time from Canadian entities reserving transmission over the Ontario or Manitoba interface, these revenues have not been and are not expected to be material to us.

Billing

MISO and SPP are responsible for billing and collecting the majority of our transmission service revenues as well as independently administering the transmission tariff in their respective service territory. As the billing agents for our MISO Regulated Operating Subsidiaries and ITC Great Plains, MISO and SPP independently bill DTE Electric, Consumers Energy, IP&L and other customers on a monthly basis and collect fees for the use of our transmission systems.

See “Item 7A. Quantitative and Qualitative Disclosures about Market Risk — Credit Risk” for discussion of our credit policies.

Competition

Each of our MISO Regulated Operating Subsidiaries operates the primary transmission system in its respective service area and has limited competition for certain projects. Other entities with transmission development initiatives may compete with us by seeking approval to be named the party authorized to build new capital projects that we are also pursuing. Our subsidiaries may also compete with other entities on development opportunities for transmission investment in locations outside of our existing service areas.

Human Capital Resources

ITC Holdings places significant emphasis on attracting, developing and retaining individuals who exemplify the values that are the cornerstone of our company. As of December 31, 2021, we had 705 employees, with low employee turnover and no significant change in the number of employees from the prior year. None of our employees are covered by collective bargaining agreements. In addition, we work with many outside firms to provide additional resources to support our business. We utilize human capital resources employed by these firms to assist with construction, maintenance, field operations and other corporate functions of our business. We believe that we have good relationships with our suppliers of contracted services.

Safety is of the utmost importance for our employees, and we consider safety to be a key priority for our company. Our safety policies, procedures and training practices have resulted in safety performance metrics that consistently rank us in the top decile among comparable electric utilities.

We believe that our compensation and benefit programs have been appropriately designed to attract and retain talent. Compensation for employees is made up of a combination of base salary, short-term incentive and long-term incentive pay structures. In addition, we offer a comprehensive package of additional benefits for all of our employees and various professional development opportunities through internal and external programs.

We strive to provide an inclusive and diverse environment for all of our employees. We believe that by recognizing and valuing our employees’ similarities, as well as their differences, we make our shared goals possible. In addition to our internal commitments to inclusion and diversity, we are continuing to enhance our supplier diversity program. This effort will further diversify our supplier base through the recruitment and growth of businesses owned by minorities, women and veterans.

Table of Contents

Environmental Matters

See “Environmental Matters” in Note 17 to the consolidated financial statements.

Available Information Under the Securities Exchange Act of 1934

Our Internet address is http://www.itc-holdings.com. Visit our website to learn more about us. Financial and other material information regarding us is routinely posted on our website and is readily accessible. All of our reports filed pursuant to Section 13(a) or 15(d) of the Exchange Act, including our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and any amendments to those reports, can be accessed free of charge through our website. These reports are available as soon as practicable after they are electronically filed with the SEC. The information on our website is not incorporated by reference into this report.

ITEM 1A. RISK FACTORS.

Risks Related to Our Business

Certain elements of our Regulated Operating Subsidiaries’ Formula Rates have been and can be challenged, which could result in lowered rates and/or refunds of amounts previously collected and thus may have an adverse effect on our business, financial condition, results of operations and cash flows.

Our Regulated Operating Subsidiaries provide transmission service under rates regulated by the FERC. The FERC has approved the cost-based Formula Rates used by our Regulated Operating Subsidiaries to calculate their respective annual revenue requirements, but it has not expressly approved the amount of actual capital and operating expenditures to be used in the Formula Rates. All aspects of our Regulated Operating Subsidiaries’ rates approved by the FERC, including the Formula Rate templates, the rates of return on the actual equity portion of their respective capital structures, ROE adders for independent transmission ownership and RTO participation, the approved capital structures and other aspects of our rates, are subject to challenge by interested parties at the FERC, or by the FERC on its own initiative in a proceeding under Section 206 of the FPA. In addition, interested parties may challenge the annual implementation and calculation by our Regulated Operating Subsidiaries of their projected rates and Formula Rate true up pursuant to their approved Formula Rates under the Regulated Operating Subsidiaries’ Formula Rate implementation protocols. End-use consumers and entities supplying electricity to end-use consumers may also attempt to influence government and/or regulators to change the rate setting methodologies that apply to our Regulated Operating Subsidiaries, particularly if rates for delivered electricity increase substantially. If a challenger can establish that any of these aspects are unjust, unreasonable, unduly discriminatory or preferential, then the FERC will make adjustments to them and/or disallow any of our Regulated Operating Subsidiaries’ inclusion of those aspects in the rate setting formula. This could result in lowered rates and/or refunds of amounts collected, any of which could have a material adverse effect on our business, financial condition, results of operations and cash flows. See “Rate of Return on Equity Complaints” in Note 17 to the consolidated financial statements for detail on ROE matters.

Our actual capital investment may be lower than planned, which would cause a lower than anticipated rate base and would therefore result in lower revenues, earnings and associated cash flows compared to our current expectations. In addition, we may incur expenses related to the pursuit of strategic investment opportunities, which may be higher than forecasted.

Each of our Regulated Operating Subsidiaries’ rate base, revenues, earnings and associated cash flows are determined in part by additions to property, plant and equipment and when those additions are placed in service. If our operating subsidiaries’ capital investment and the resulting in-service property, plant and equipment are lower than anticipated for any reason, our operating subsidiaries will have a lower than anticipated rate base, thus causing their revenue requirements and future earnings and cash flows to be lower than anticipated.

Any capital investment at our Regulated Operating Subsidiaries may be lower than our published estimates due to, among other factors, the impact of:

•actual or forecasted loads;

•regional economic conditions;

•weather conditions;

Table of Contents

•union strikes or labor shortages;

•material and equipment prices and availability;

•variances between estimated and actual costs of construction contracts awarded;

•our ability to obtain financing for such expenditures, if necessary;

•limitations on the amount of construction that can be undertaken on our system or transmission systems owned by others at any one time;

•regulatory requirements relating to our rate construct, including our ability to recover costs;

•the potential for greater competition;

•environmental, siting or regional planning issues; and

•legal proceedings.

Our ability to engage in construction projects resulting from pursuing these initiatives is subject to significant uncertainties, including the factors discussed above, and will depend on obtaining any necessary regulatory and other approvals for the project and for us to initiate construction, our achieving status as the builder of the project in some circumstances and other factors. In addition, projects may be canceled, the scope of planned projects may change, or projects may not be completed on time, any of which may adversely affect our level of investment or cause our projected investments to be inaccurate.

In addition, we may incur expenses to pursue strategic investment opportunities. If these payments or expenses are higher than anticipated, our future results of operations, cash flows and financial condition could be materially and adversely affected.

The regulations to which we are subject may limit our ability to raise capital and/or pursue acquisitions, development opportunities or other transactions or may subject us to liabilities.

Each of our Regulated Operating Subsidiaries is a “public utility” under the FPA and, accordingly, is subject to regulation by the FERC. Approval of the FERC is required under Section 203 of the FPA for a disposition or acquisition of regulated public utility facilities, either directly or indirectly through a holding company. Such approval is also required to acquire a significant interest in securities of a public utility. Section 203 of the FPA also provides the FERC with explicit authority over utility holding companies’ purchases or acquisitions of, and mergers or consolidations with, a public utility. Finally, each of our Regulated Operating Subsidiaries must also seek approval by the FERC under Section 204 of the FPA for issuances of its securities (including debt securities). If we are unable to obtain the necessary FERC approvals for potential acquisitions, dispositions or merger activities, or to raise capital, our strategic and growth opportunities may be limited. This could have an adverse impact on our financial condition, results of operations and cash flows.

We are also pursuing development projects for construction of transmission facilities and interconnections with generating resources. These projects may require regulatory approval by Federal agencies, including the FERC, applicable RTOs and state and local regulatory agencies. Failure to secure such regulatory approval for new strategic development projects could adversely affect our ability to grow our business and increase our revenues. If we fail to obtain these approvals when necessary, we may incur liabilities for such failure.

Changes in energy laws, regulations or policies could impact our business, financial condition, results of operations and cash flows.

Each of our Regulated Operating Subsidiaries is regulated by the FERC as a “public utility” under the FPA and is a TO in MISO, SPP or PJM. We cannot predict whether the approved rate methodologies for any of our Regulated Operating Subsidiaries will be changed. In addition, the U.S. Congress periodically considers enacting energy legislation that could assign new responsibilities to the FERC, modify provisions of the FPA or provide the FERC or another entity with increased authority to regulate transmission matters. Our Regulated Operating Subsidiaries may be affected by any such changes in federal energy laws, regulations or policies in the future. While our Regulated Operating Subsidiaries are subject to the FERC’s exclusive jurisdiction for purposes of rate regulation, changes in state laws affecting other matters, such as transmission siting and construction, could limit investment opportunities available to us.

Table of Contents

The widespread outbreak of an illness or other communicable disease, including the COVID-19 pandemic, or any other public health crisis, could have a material adverse impact on our business, financial condition, results of operations, cash flows and credit metrics.

We could be negatively impacted by the widespread outbreak of an illness or any other communicable diseases, or any other public health crisis that results in economic and trade disruptions, including the disruption of global supply chains. COVID-19 is currently impacting the global economy, supply chains and markets. As a result of efforts to limit the spread of COVID-19, public health authorities, OSHA, and/or the states served by our transmission systems may issue orders that can place restrictions on and/or result in the temporary shutdown of operations of businesses that use our transmission systems. The impact of efforts to limit the spread of COVID-19 on our business, financial condition and results of operations is uncertain and will ultimately depend on the duration and severity of the pandemic, the length that the various business restrictions are in effect, the impact of recent resurgences of COVID-19 cases and deaths in the United States, and the efficacy and distribution of COVID-19 vaccines.

We intend to comply with applicable obligations that require broad categories of employees and subcontractors to be vaccinated against COVID-19 or test regularly. Complying with such vaccine and/or testing requirements poses the risk of workforce disruption that could impact business continuity, including the quarantine/isolation of employees, the possibility of resignations by unwilling employees and/or subcontractors, and difficulty in satisfying future labor needs. Significant workforce disruptions could have a material impact on our business, financial condition, results of operations and cash flows.

COVID-19 could disrupt the supply chains that provide services and equipment to us as part of our capital expenditures or maintenance efforts. If our supply chains are disrupted, we may be unable to perform necessary maintenance, which could result in increased costs as we implement contingency plans to allow us to continue to operate. Supply chain interruptions may also increase the cost of capital expenditures or result in the delay or cancellation of planned projects, any of which could have a material adverse impact on our business, financial condition, results of operations and cash flows.

We cannot predict whether, and the extent to which, COVID-19 will have a material impact on our liquidity, financial condition, and results of operations. We require access to the capital markets to fund capital investments. To the extent that our access to the capital markets is adversely affected by COVID-19, we may need to consider alternative sources of funding for our operations and for working capital, any of which may not be available and may increase our cost of capital. The extent to which COVID-19 may impact our liquidity, financial condition, and results of operations will depend on future developments, which are highly uncertain and cannot be predicted; an extended period of global supply chain and economic disruption could materially impact our business, financial condition, results of operations, cash flows and credit metrics.

Each of our MISO Regulated Operating Subsidiaries depends on its primary customer for a substantial portion of its revenues, and any material failure by those primary customers to make payments for transmission services could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Each of ITCTransmission, METC and ITC Midwest derive a substantial portion of their revenues from the transmission of electricity to the local distribution facilities of DTE Electric, Consumers Energy and IP&L, respectively. Each of these customers is expected to constitute the majority of the revenues of the respective MISO Regulated Operating Subsidiary for the foreseeable future. Any material failure by DTE Electric, Consumers Energy or IP&L to make payments for transmission services could have an adverse effect on our business, financial condition, results of operations and cash flows.

A significant amount of the land on which our assets are located is subject to easements, mineral rights and other similar encumbrances. As a result, we must comply with the provisions of various easements, mineral rights and other similar encumbrances, which may adversely impact our ability to complete construction projects in a timely manner.

METC does not own the majority of the land on which its electric transmission assets are located. Instead, under the provisions of the Easement Agreement, METC pays an annual rent to Consumers Energy in exchange for rights-of-way, leases, fee interests and licenses which allow METC to use the land on which its transmission lines are located. Under the terms of the Easement Agreement, METC’s easement rights could be eliminated if METC fails to meet certain requirements, such as paying contractual rent to Consumers Energy in

Table of Contents

a timely manner. Additionally, a significant amount of the land on which our other subsidiaries’ assets are located is subject to easements, mineral rights and other similar encumbrances. As a result, they must comply with the provisions of various easements, mineral rights and other similar encumbrances, which may adversely impact their ability to complete their construction projects in a timely manner.

We contract with third parties to provide services for certain aspects of our business. If any of these agreements are terminated, we may face a shortage of labor or replacement contractors to provide the services formerly provided by these third parties.

We enter into various agreements and arrangements with third parties to provide services for construction, maintenance and operations of certain aspects of our business, and we utilize the services of contractors to a significant extent. If any of these agreements or arrangements is terminated for any reason, it could result in a shortage of a readily available workforce to provide such services and we may face difficulty finding a qualified replacement workforce. In such a situation, if we are unable to find adequate replacements for contractors in a timely manner, it could have an adverse effect on our results of operations and the ability to carry on our business.

Hazards associated with high-voltage electricity transmission may result in suspension of our operations, costly litigation or the imposition of civil or criminal penalties.

Our operations are subject to the usual hazards associated with high-voltage electricity transmission, including explosions, fires, mechanical failure, unscheduled downtime, equipment interruptions, remediation, chemical spills, discharges or releases of toxic or hazardous substances or gases and other environmental risks. These hazards can cause personal injury and loss of life, severe damage to or destruction of property and equipment and environmental damage, and may result in suspension of operations, litigation by aggrieved parties and the imposition of civil or criminal penalties which may have a material adverse effect on our business, financial condition and results of operations. We maintain property and casualty insurance, but we are not fully insured against all potential hazards incident to our business, such as damage to poles, towers and lines or losses caused by outages.

We are subject to environmental regulations and to laws that can give rise to substantial liabilities from environmental contamination.

We are subject to federal, state and local environmental laws and regulations, which impose limitations on the discharge of pollutants into the environment, establish standards for the management, treatment, storage, transportation and disposal of solid and hazardous wastes and hazardous materials, and impose obligations to investigate and remediate contamination in certain circumstances. Liabilities relating to investigation and remediation of contamination, as well as other liabilities concerning hazardous materials or contamination such as claims for personal injury or property damage, may arise at many locations, including formerly owned or operated properties and sites where wastes have been treated or disposed of, as well as properties we currently own or operate. Such liabilities may arise even where the contamination does not result from noncompliance with applicable environmental laws. Under a number of environmental laws, such liabilities may also be joint and several, meaning that a party can be held responsible for more than its share of the liability involved, or even the entire share.

We have incurred expenses in connection with environmental compliance, and we anticipate that we will continue to do so in the future. Failure to comply with the extensive environmental laws and regulations applicable to us could result in significant civil or criminal penalties and remediation costs. Our assets and operations also involve the use of materials classified as hazardous, toxic or otherwise dangerous. Some of our facilities and properties are located near environmentally sensitive areas such as wetlands and habitats of endangered or threatened species. In addition, certain properties in which we operate are, or are suspected of being, affected by environmental contamination. Compliance with these laws and regulations, and liabilities concerning contamination or hazardous materials, may adversely affect our costs and, therefore, our business, financial condition and results of operations.

Table of Contents

If amounts billed for transmission service for our Regulated Operating Subsidiaries’ transmission systems are lower than expected, or our actual revenue requirements are higher than expected, the timing of actual collection of our total revenues would be delayed.

If amounts billed for transmission service are lower than expected, the timing of actual collections of our Regulated Operating Subsidiaries’ total revenue requirement would likely be delayed until such circumstances are adjusted through the true-up mechanism, which would be settled within a two-year period, in our Regulated Operating Subsidiaries’ Formula Rates. Lower than expected amounts collected could result from lower network load or point-to-point transmission service on our Regulated Operating Subsidiaries’ transmission systems due to a weak economy, changes in the nature or composition of the transmission assets of our Regulated Operating Subsidiaries and surrounding areas, poor transmission quality of neighboring transmission systems, or for any other reason. In addition, if the revenue requirements of our Regulated Operating Subsidiaries are higher than expected, the timing of actual collection of our Regulated Operating Subsidiaries' total revenue requirements would likely be delayed until such circumstances are reflected through the true-up mechanism, which would be settled within a two-year period, in our Regulated Operating Subsidiaries' Formula Rates. This could be due to higher actual expenditures compared to the forecasted expenditures used to develop their billing rates or for any other reason. The effect of such under-collection would be to reduce the amount of our available cash resources from what we had expected, until such under-collection is corrected through the true-up mechanism in the Formula Rate template, which may require us to increase our outstanding indebtedness, thereby reducing our available borrowing capacity, and may require us to pay interest at a rate that exceeds the interest to which we are entitled in connection with the operation of the true-up mechanism.

We are subject to various regulatory requirements, including reliability standards; contract filing requirements; reporting, recordkeeping and accounting requirements; and transaction approval requirements. Violations of these requirements, whether intentional or unintentional, may result in penalties that, under some circumstances, could have a material adverse effect on our business, financial condition, results of operations and cash flows.

The various regulatory requirements to which we are subject include reliability standards established by the NERC, which acts as the nation’s Electric Reliability Organization approved by the FERC in accordance with Section 215 of the FPA. These standards address operation, planning and security of the bulk power system, including requirements with respect to real-time transmission operations, emergency operations, vegetation management, critical infrastructure protection and personnel training. Failure to comply with these requirements can result in monetary penalties as well as non-monetary sanctions. Monetary penalties vary based on an assigned risk factor for each potential violation, the severity of the violation and various other circumstances, such as whether the violation was intentional or concealed, whether there are repeated violations, the degree of the violator’s cooperation in investigating and remediating the violation and the presence of a compliance program, and such penalties can be substantial. Non-monetary sanctions include potential limitations on the violator’s activities or operation and placing the violator on a watchlist for major violators. If any of our subsidiaries violate the NERC reliability standards, even unintentionally, in any material way, any penalties or sanctions imposed against us could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Certain of our subsidiaries are also subject to requirements under Sections 203 and 205 of the FPA for approval of transactions; reporting, recordkeeping and accounting requirements; and for filing contracts related to the provision of jurisdictional services. Under the FERC policy, failure to file jurisdictional agreements on a timely basis may result in foregoing the time value of revenues collected under the agreement, but not to the point where a loss would be incurred. The failure to obtain timely approval of transactions subject to FPA Section 203, or to comply with applicable reporting, recordkeeping or accounting requirements under FPA Section 205, could subject us to penalties that could have a material adverse effect on our financial condition, results of operations and cash flows.

Acts of war, terrorist attacks and other catastrophic events may have a material adverse effect on our business, financial condition, results of operations and cash flows.

Acts of war, terrorist attacks and other catastrophic events may negatively affect our business, financial condition and cash flows in unpredictable ways, such as increased security measures and disruptions of markets. Energy related assets, including, for example, our transmission facilities and DTE Electric’s, Consumers Energy’s and IP&L’s generation and distribution facilities that we interconnect with, may be at risk of

Table of Contents

acts of war, terrorist attacks and other catastrophic events. Such events or threats may have a material effect on the economy in general and could result in a decline in energy consumption, which may have a material adverse effect on our business, financial condition, results of operations and cash flows.

A cyber-attack or incident could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Various U.S. Government agencies have noted that external threat sources continue to seek to exploit, through cyber-attacks, potential vulnerabilities in the U.S. energy infrastructure, including electric transmission assets. These cyber threats and attacks are becoming more sophisticated and dynamic. Cyber security incidents could harm our business by limiting our transmission capabilities, delay our development and construction of new facilities or capital improvement projects on existing facilities or expose us to liability. Cyber-attacks targeting our information systems could also impair our records, networks, systems and programs, or transmit viruses to other systems. Such events or the threat of such events may increase costs associated with heightened security requirements. In addition, if our major customers or suppliers experience a cyber-attack it may reduce their ability to use our transmission facilities or service our transmission assets. If our business or those of our customers and suppliers are subject to a cyber-attack, it may have a material adverse effect on our business, financial condition, results of operations and cash flows.

Effects of climate change, including natural disasters, severe weather and other related phenomena, and the regulatory and legislative developments related to climate change, may have a material adverse effect on our business, financial condition, results of operations and cash flows.

Natural disasters, severe weather, and other related phenomena due to climate change may negatively affect our business and financial condition through increased costs from repairs to our transmission facilities and implementation of contingency plans for continued operations as repairs are underway. We could also experience disruptions to our supply chain, as our suppliers may face similar challenges to their operations from severe weather-related events due to climate change. Furthermore, prolonged power outages to customers and business interruptions from delays in storm restoration efforts could damage our reputation, which may have a material adverse effect on our business, financial condition, results of operations and cash flows.

Moreover, federal, regional or state legislative or regulatory initiatives may attempt to control or limit the causes of climate change, including greenhouse gas emissions, such as carbon dioxide and methane. Such laws or regulations could impose costs tied to greenhouse gas emissions, operational requirements or restrictions, or additional charges to fund energy efficiency activities. They could also provide a cost advantage to alternative energy sources or result in other costs or requirements, such as costs associated with the adoption of new infrastructure and technology to respond to new mandates. The occurrence of the foregoing events could put upward pressure on costs, adversely affecting our business, financial condition, results of operations and cash flows.

Changes in tax laws or regulations may negatively affect our financial condition, results of operations, net income, cash flows and credit metrics.

We are subject to taxation by various taxing authorities at the federal, state and local levels. Various representatives of the government, corporations, industry groups and the public continue to pursue changes to tax laws and regulations, and corporate tax reform continues to be a priority in many jurisdictions. Due to unique aspects of the treatment of taxes for regulated utilities, the impacts of changes in tax laws for us and our Regulated Operating Subsidiaries may differ from the impacts to other corporations generally. Changes in federal, state or local tax rates or other aspects of tax laws could materially and adversely affect our financial condition, results of operations, net income, cash flows, and credit metrics.

Advances in technology may negatively impact our business, financial condition, results of operations and cash flows.

Research and development efforts continue to seek improvements to existing or new alternative technologies to produce, store and distribute power, including fuel cells, microturbines, distributed generation and battery storage. It is possible that adoption of such alternative technologies could be significant enough to cause a reduction in the demand for electricity from the traditional bulk electric system or could make portions of our transmission systems obsolete before the end of their useful lives. Such advances in alternative technologies could decrease the need for capital investments in our transmission systems over time or increase

Table of Contents

cost, and as a result could have an adverse effect on our business, financial condition, results of operations and cash flows.

Risks Relating to Our Corporate and Financial Structure

ITC Holdings is a holding company with no operations, and unless we receive dividends or other payments from our subsidiaries, we may be unable to fulfill our cash obligations.

As a holding company with no business operations, ITC Holdings’ material assets consist primarily of the stock and membership interests in our subsidiaries. Our only sources of cash to meet our obligations are dividends and other payments received by us from time to time from our subsidiaries, the proceeds raised from the sale of our securities and borrowings under our various credit agreements. Each of our subsidiaries, however, is legally distinct from us and has no obligation, contingent or otherwise, to make funds available to us. The ability of each of our Regulated Operating Subsidiaries and our other subsidiaries to pay dividends and make other payments to us is subject to, among other things, the availability of funds, after taking into account capital expenditure requirements, the terms of its indebtedness, applicable state laws and regulations of the FERC and the FPA. Our Regulated Operating Subsidiaries target a FERC-approved capital structure of 60% equity and 40% debt that may limit the ability of our Regulated Operating Subsidiaries to use net assets for the payment of dividends to ITC Holdings. In addition, ITC Holdings’ right to receive any assets of any subsidiary, and therefore the right of its creditors to participate in those assets, will be effectively subordinated to the claims of that subsidiary’s creditors. If ITC Holdings does not receive cash or other assets from our subsidiaries, it may be unable to pay principal and interest on its indebtedness.

We have a considerable amount of debt and our reliance on debt financing may limit our ability to fulfill our debt obligations and/or to obtain additional financing.

We have a considerable amount of debt and our consolidated indebtedness includes various debt securities and borrowings, which utilize indentures, revolving and term loan credit agreements and commercial paper that we rely on as sources of capital and liquidity. Our capital structure can have several important consequences, including, but not limited to, the following:

•If future cash flows are insufficient, we may not be able to make principal or interest payments on our debt obligations, which could result in the occurrence of an event of default under one or more of those debt instruments.

•We may need to increase our indebtedness in order to make the capital expenditures and other expenses or investments planned by us.

•Our indebtedness has the general effect of reducing our flexibility to react to changing business and economic conditions insofar as they affect our financial condition. A substantial portion of the dividends and payments in lieu of taxes we receive from our subsidiaries will be dedicated to the payment of interest on our indebtedness, thereby, reducing our available cash.

•In the event that we are liquidated, the creditors of our subsidiaries will be entitled to payment in full of the subsidiaries’ indebtedness prior to making any payments to ITC Holdings for the payment of its indebtedness.

•We currently have debt instruments outstanding with short-term maturities or relatively short remaining maturities. Our ability to secure additional financing prior to or after these facilities mature, if needed, may be substantially restricted by the existing level of our indebtedness and the restrictions contained in our debt instruments. Additionally, the interest rates at which we might secure additional financings may be higher than our currently outstanding debt instruments or higher than forecasted at any point in time, which could adversely affect our business, financial condition, results of operations and cash flows.

•Market conditions could affect our access to capital markets, restrict our ability to secure financing to make the capital expenditures and investments and pay other expenses planned by us which could adversely affect our business, financial condition, results of operations and cash flows.

We may incur substantial additional indebtedness in the future. The incurrence of additional indebtedness would increase the leverage-related risks described above.

Table of Contents

Adverse changes in our credit ratings may negatively affect us.

Our ability to access capital markets is important to our ability to operate our business. Increased scrutiny of the energy industry and the impact of regulation, as well as changes in our financial performance and unfavorable conditions in the capital markets could result in credit agencies reexamining and downgrading our credit ratings. In addition, because we are a subsidiary of Fortis, a downgrade in Fortis’ credit rating could cause our credit rating to be downgraded as well, even if our creditworthiness has not otherwise deteriorated. A downgrade in our credit ratings could restrict or discontinue our ability to access capital markets at attractive rates and increase our borrowing costs. A rating downgrade could also increase the interest we pay on commercial paper and our revolving and term loan credit agreements.

Certain provisions in our debt instruments limit our financial and operating flexibility.

Our debt instruments on a consolidated basis, including senior notes, secured notes, first mortgage bonds, revolving and term loan credit agreements and commercial paper, contain numerous financial and operating covenants that place significant restrictions on, among other things, our ability to:

•incur additional indebtedness;

•engage in sale and lease-back transactions;

•create liens or other encumbrances;

•enter into mergers, consolidations, liquidations or dissolutions, or sell or otherwise dispose of all or substantially all of our assets;

•create and acquire subsidiaries; and

•pay dividends or make distributions on our stock or on the stock or member capital of our subsidiaries.

In addition, the covenants require us to meet certain financial ratios, such as maintaining certain debt to capitalization ratios and certain funds from operations to debt levels. Our ability to comply with these and other requirements and restrictions may be affected by changes in economic or business conditions, results of operations or other events beyond our control. A failure to comply with the obligations contained in any of our debt instruments could result in acceleration of related debt and the acceleration of debt under other instruments evidencing indebtedness that may contain cross-acceleration or cross-default provisions.

ITEM 1B. UNRESOLVED STAFF COMMENTS.

None.

ITEM 2. PROPERTIES.

Our Regulated Operating Subsidiaries’ transmission facilities are located in Michigan, Iowa, Minnesota, Illinois, Missouri, Kansas and Oklahoma. Our MISO Regulated Operating Subsidiaries and ITC Great Plains have agreements with other utilities for the joint ownership of specific substations, transmission lines and other transmission assets. See Note 15 to the consolidated financial statements for more information on the jointly owned assets.

Our Regulated Operating Subsidiaries own the assets of transmission systems and related assets, including:

•approximately 16,000 circuit miles of overhead and underground transmission lines rated at voltages of 34.5 kV to 345 kV, along with related transmission towers and poles;

•station assets, such as transformers and circuit breakers, at approximately 676 stations and substations which either interconnect our Regulated Operating Subsidiaries’ transmission facilities or connect our Regulated Operating Subsidiaries’ facilities with generation or distribution facilities owned by others;

•other transmission equipment necessary to safely operate the system (e.g., monitoring and metering equipment);

•warehouses and related equipment; and

•associated land held in fee, rights-of-way and easements.

Table of Contents

ITCTransmission owns a corporate headquarters facility and operations control room in Novi, Michigan and a facility in Ann Arbor, Michigan that includes a back-up operations control room, along with associated furniture, fixtures and office equipment for these facilities.

METC does not own the majority of the land on which its assets are located, but under the provisions of the Easement Agreement, METC has an easement to use the land, rights-of-way, leases and licenses in the land on which its transmission lines are located that are held or controlled by Consumers Energy. See “Item 1. Business - Operating Contracts - METC - Amended and Restated Easement Agreement.”

Certain of our Regulated Operating Subsidiaries have issued First Mortgage Bonds and Senior Secured Notes. Under the terms of these instruments, the respective bondholders and noteholders have the benefit of a first mortgage lien on substantially all of the assets of the corresponding debt issuer. Refer to Note 9 to the consolidated financial statements for more information on the outstanding debt of our Regulated Operating Subsidiaries. As of December 31, 2021, there were no liens or encumbrances on the assets of ITC Interconnection.

The assets of our Regulated Operating Subsidiaries are suitable for electric transmission and adequate for the electricity demand in our service territory. We prioritize capital spending based in part on meeting reliability standards within the industry. This includes replacing and upgrading existing assets as needed.

ITEM 3. LEGAL PROCEEDINGS.

We are involved in certain legal proceedings before various courts, governmental agencies and mediation panels concerning matters arising in the ordinary course of business. These proceedings include certain contract disputes, regulatory matters and pending judicial matters. We cannot predict the final disposition of such proceedings. We regularly review legal matters and record provisions for claims that are considered probable of loss.

Refer to Notes 5 and 17 to the consolidated financial statements for a description of certain pending legal proceedings, which description is incorporated herein by reference.

ITEM 4. MINE SAFETY DISCLOSURES.

Not applicable.

PART II


ITEM 5.			MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES.

ITC Holdings is a wholly-owned subsidiary of ITC Investment Holdings and ITC Holdings’ common stock is not publicly traded.

ITC Holdings paid dividends of $232 million and $330 million to our parent, ITC Investment Holdings, during the years ended December 31, 2021 and 2020, respectively. ITC Holdings also paid dividends of $64 million to ITC Investment Holdings in January 2022. The timing and amount of future dividends is subject to an approved dividend declaration from our Board of Directors, and is dependent upon cash flows, capital requirements, legislative and regulatory developments, and financial condition of ITC Holdings, among other factors deemed relevant.

ITEM 6. [Reserved]


ITEM 7.			MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

Safe Harbor Statement Under The Private Securities Litigation Reform Act of 1995

Our reports, filings and other public announcements contain certain statements that describe our management’s beliefs concerning future business conditions, plans and prospects, growth opportunities, the outlook for our business and the electric transmission industry, and expectations with respect to various legal and regulatory proceedings based upon information currently available. Such statements are “forward-looking”

Table of Contents

statements within the meaning of the Private Securities Litigation Reform Act of 1995. Wherever possible, we have identified these forward-looking statements by words such as “will,” “may,” “anticipates,” “believes,” “intends,” “estimates,” “expects,” “forecasted,” “projects,” “likely” and similar phrases. These forward-looking statements are based upon assumptions our management believes are reasonable. Such forward-looking statements are based on estimates and assumptions and are subject to significant risks and uncertainties which could cause our actual results, performance and achievements to differ materially from those expressed in, or implied by, these statements, including, among others, the risks and uncertainties listed in this report under “Item 1A. Risk Factors” and in our other reports filed with the SEC from time to time.

Forward-looking statements speak only as of the date made and can be affected by assumptions we might make or by known or unknown risks and uncertainties. Many factors mentioned in our discussion in this report will be important in determining future results. Consequently, we cannot assure you that our expectations or forecasts expressed in such forward-looking statements will be achieved. Except as required by law, we undertake no obligation to publicly update any of our forward-looking or other statements, whether as a result of new information, future events or otherwise.

Statement on Prior Period Comparisons

This section of this Form 10-K generally discusses the financial condition, changes in financial condition and results of operations for the years ended December 31, 2021 and 2020 and provides year-to-year comparisons between the years ended December 31, 2021 and 2020. Discussions of such information for the year ended December 31, 2019 and year-to-year comparisons between the years ended December 31, 2020 and 2019 that are not included in this Form 10-K can be found in “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7. of the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020.

Overview

Our Regulated Operating Subsidiaries earn revenues for the use of their electric transmission systems by their customers, which include investor-owned utilities, municipalities, cooperatives, power marketers and alternative energy suppliers. As independent transmission companies, our Regulated Operating Subsidiaries are subject to rate regulation only by the FERC, and our cost-based rates are discussed below under “— Cost-Based Formula Rates with True-Up Mechanism” as well as in Note 5 to the consolidated financial statements.

Significant recent matters that influenced our financial condition, results of operations and cash flows for the year ended December 31, 2021 or that may affect future results include:

•Our capital expenditures of $834 million at our Regulated Operating Subsidiaries during the year ended December 31, 2021, as described below under “— Capital Investment and Operating Results Trends;”

•Debt issuances, borrowings, repayments, and interest rate swaps as described in Note 9 to the consolidated financial statements;

•The FERC orders related to the MISO ROE Complaints, as described in Note 17 to the consolidated financial statements, that are currently under appeal at the D.C. Circuit Court; and

Table of Contents

•Issuance of a NOPR by the FERC on March 20, 2020 and issuance of a supplemental NOPR on April 15, 2021, that include a proposal to update the transmission incentives policy, as described below under “ — Recent Developments.”

These items are discussed in more detail throughout “Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

Cost-Based Formula Rates with True-Up Mechanism

Our Regulated Operating Subsidiaries calculate their revenue requirements using cost-based Formula Rates that are effective without the need to file rate cases with the FERC, although the rates are subject to legal challenge at the FERC. Under their cost-based formula, each of our Regulated Operating Subsidiaries separately calculates a revenue requirement based on financial information specific to each company. The calculation of projected revenue requirement for a future period is used to establish the transmission rate used for billing purposes. The calculation of actual revenue requirements for a historic period is used to calculate the amount of revenues recognized in that period and determine the over- or under-collection for that period.

Under these Formula Rates, our Regulated Operating Subsidiaries recover expenses and earn an authorized return on and recover investments in property, plant and equipment on a current basis. The Formula Rates for a given year reflect forecasted expenses, property, plant and equipment, point-to-point revenues, network load at our MISO Regulated Operating Subsidiaries and other items for the upcoming calendar year to establish projected revenue requirements for each of our Regulated Operating Subsidiaries that are used as the basis for billing for service on their systems from January 1 to December 31 of that year. Our Formula Rates include a true-up mechanism, whereby our Regulated Operating Subsidiaries compare their actual revenue requirements to their billed revenues for each year to determine any over- or under-collection of revenue. The over- or under-collection typically results from differences between the projected revenue requirement used as the basis for billing and actual revenue requirement at each of our Regulated Operating Subsidiaries, or from differences between actual and projected monthly network peak loads at our MISO Regulated Operating Subsidiaries. In the event billed revenues in a given year are more or less than actual revenue requirements, which are calculated primarily using information from that year’s FERC Form No. 1, our Regulated Operating Subsidiaries will refund or collect additional revenues, with interest, within a two-year period such that customers pay only the amounts that correspond to actual revenue requirements for that given period. This annual true-up ensures that our Regulated Operating Subsidiaries recover their allowed costs and earn their authorized returns.

See “Cost-Based Formula Rates with True-Up Mechanism” in Note 5 to the consolidated financial statements for further discussion of our Formula Rates and see “Rate of Return on Equity Complaints” in Note 17 to the consolidated financial statements for detail on ROE matters.

Table of Contents

Illustrative Example of Formula Rate Setting

The Formula Rate setting example shown below is for illustrative purposes only and is not based on our actual financial data.


Line	Item	Instructions	Amount
1	Rate base (a)		$	1,000,000
2	Multiply by 13-month weighted average cost of capital (b)		8.46		%
3	Authorized return on rate base	(Line 1 x Line 2)	$	84,600
4	Recoverable operating expenses (including depreciation and amortization)		$	150,000
5	Income taxes (c)		37,500
6	Gross revenue requirement	(Line 3 + Line 4 + Line 5)	$	272,100

____________________________

(a)Consists primarily of in-service property, plant and equipment, net of accumulated depreciation.

(b)The weighted average cost of capital for purposes of this illustration is calculated below. The cost of capital for debt is included at a flat interest rate for purposes of this illustration and is not based on our actual cost of capital. The cost of capital rate for equity represents the current maximum allowed MISO ROE per the May 2020 Order on the Initial Complaint. See Note 17 to the consolidated financial statements for detail on ROE matters.


			Weighted
			Average
	Percentage of		Cost of
	Total Capitalization	Cost of Capital	Capital
Debt	40.00%	5.00% =	2.00	%
Equity	60.00%	10.77% =	6.46	%
	100.00%		8.46	%

(c)Represents an approximation of the federal and state income tax expense for purposes of this illustration and is not based on our actual tax expense.

Revenue Accruals and Deferrals — Effects of Monthly Network Peak Loads

For our MISO Regulated Operating Subsidiaries, monthly network peak loads are used for billing network revenues, which currently is the largest component of our operating revenues. One of the primary factors that impacts the revenue accruals and deferrals at our MISO Regulated Operating Subsidiaries is actual monthly network peak loads experienced as compared to those forecasted in establishing the annual network transmission rate. Under their cost-based Formula Rates that contain a true-up mechanism, our MISO Regulated Operating Subsidiaries accrue or defer revenues to the extent that their actual revenue requirement for the reporting period is higher or lower, respectively, than the amounts billed relating to that reporting period. Although monthly network peak loads do not impact operating revenues recognized, network load affects the timing of our cash flows from transmission service. The monthly network peak load of our MISO Regulated Operating Subsidiaries is generally impacted by weather, economic conditions and other significant factors, including the effects of COVID-19, and is seasonally shaped with higher load in the summer months when cooling demand is higher. We are unable to predict the possible future impacts of weather, economic conditions, including COVID-19, and other factors on monthly network peak loads at our MISO Regulated Operating Subsidiaries.

ITC Great Plains does not receive revenue based on a peak load or a dollar amount per kW each month. Therefore, peak load does not have a seasonal effect on operating cash flows. The SPP tariff applicable to ITC Great Plains is billed ratably each month based on its annual projected revenue requirement posted annually by SPP.

Capital Investment and Operating Results Trends

We expect a long-term upward trend in rate base resulting from our anticipated capital investment, in excess of depreciation and any acquisition premiums, from our Regulated Operating Subsidiaries’ long-term capital

Table of Contents

investment programs to improve reliability, increase system capacity and upgrade the transmission network to support new generating resources. Investments in property, plant and equipment, when placed in-service upon completion of a capital project, are added to the rate base of our Regulated Operating Subsidiaries. While we expect increases in rate base to result in a corresponding long-term upward trend in revenues and earnings, our revenues and earnings have been impacted by changes in our ROE and required refunds resulting from the resolution of the incentive adders complaints and MISO ROE Complaints, as described in Note 5 and Note 17 to the consolidated financial statements. Our revenues and earnings may be impacted by future increases or decreases to our rates for incentive adders and base ROE.

During 2021, our MISO Regulated Operating Subsidiaries filed revised depreciation rates for their assets which were approved by the FERC in December 2021. The overall depreciation expense at our MISO Regulated Operating Subsidiaries increased beginning on January 1, 2022. This increase is expected to result in higher revenue from customers in the near term due to an overall increase in the rates at which we record depreciation expense. Based on December 31, 2020 asset balances used in the filing, we estimate an increase in 2022 in depreciation expense of approximately $35 million to $40 million resulting from our MISO Regulated Operating Subsidiaries’ new depreciation rates.

Our Regulated Operating Subsidiaries strive for high reliability of their systems and improvement in system accessibility for all generation resources. The FERC requires compliance with certain reliability standards and may take enforcement actions against violators, including the imposition of substantial fines. NERC is responsible for developing and enforcing these mandatory reliability standards. We continually assess our transmission systems against standards established by NERC, as well as the standards of applicable regional entities under NERC that have been delegated certain authority for the purpose of proposing and enforcing reliability standards. We believe that we meet the applicable standards in all material respects, although further investment in our transmission systems and an increase in maintenance activities will likely be needed to maintain compliance, improve reliability and address any new standards that may be promulgated.

We also assess our transmission systems against our own planning criteria that are filed annually with the FERC. Based on our planning studies, we see needs to make capital investments to: (1) maintain and replace our current transmission infrastructure to enhance system reliability and accommodate load growth; (2) interconnect new renewable generation resources; (3) upgrade physical and technological grid security to protect critical infrastructure; and (4) expand access to electricity markets to reduce the overall cost of delivered energy to customers. To date, COVID-19 has not had a material impact on our forecasted capital expenditures. However, we continue to evaluate and monitor the potential impacts of COVID-19, including potential supply chain disruptions, on our forecasted capital expenditures. The following table shows our actual and expected capital expenditures at our Regulated Operating Subsidiaries:

Actual Capital

Forecasted

Expenditures for the

Capital

year ended

Expenditures

(In millions of USD)

December 31, 2021

2022 — 2026

Expenditures for property, plant and equipment (a)

834

4,004

____________________________

(a)Amounts represent the cash payments to acquire or construct property, plant and equipment, as presented in the consolidated statements of cash flows. These amounts exclude non-cash additions to property, plant and equipment for the AFUDC equity as well as accrued liabilities for construction, labor and materials that have not yet been paid.

Our long-term growth plan includes ongoing investments in our current regulated transmission systems and the identification of incremental strategic projects primarily located in and around our service territories. Refer to “Item 1. Business — Development of Business” for additional information.

A comprehensive effort by MISO is underway to identify and construct the regional transmission required in the MISO region to support the ongoing evolution of the electric industry. MISO is currently requesting FERC authorization for cost allocation and finalizing planning for an initial tranche of long range transmission plan projects.

Table of Contents

Investments in property, plant and equipment could be lower than expected due to a variety of factors, as discussed in “Item 1A. Risk Factors.” In addition, investments in transmission network upgrades for generator interconnection projects could change from prior estimates significantly due to changes in the MISO queue for generation projects and other factors beyond our control.

Recent Developments

COVID-19 Pandemic

In March 2020, the World Health Organization declared COVID-19 a pandemic. Efforts to control the outbreak of COVID-19 have resulted in challenges to businesses and facilities in various industries around the world, including our customers, and disruptions to the global economy and supply chains. To date, COVID-19 has not had a material impact on our net income. However, for 2020, we utilized various temporary cost saving measures related to operating expenses, including operation and maintenance expenses and general and administrative expenses, in an attempt to reduce costs for our customers that were collected through our Formula Rates.

We are unable to predict the ultimate effects of COVID-19 on the U.S. or global economy or our operations. We continue to monitor developments affecting our workforce, customers, suppliers, and operations. The extent of the impact of COVID-19 will depend on its duration, actions by government authorities, and impacts on our customers, employees, or vendors. These developments are continuously evolving, and we cannot predict whether COVID-19 will have a material impact on our financial condition, results of operations or cash flows.

Rate of Return on Equity Complaints

Two complaints were filed with the FERC by combinations of consumer advocates, consumer groups, municipal parties and other parties challenging the base ROE in MISO. The FERC has issued multiple orders in these proceedings, and there are appeals to these orders pending in the D.C. Circuit Court. See Rate of Return on Equity Complaints in Note 17 to the consolidated financial statements for a summary of the MISO ROE Complaints. See also the risk factor “Certain elements of our Regulated Operating Subsidiaries’ Formula Rates have been and can be challenged, which could result in lowered rates and/or refunds of amounts previously collected and thus may have an adverse effect on our business, financial condition, results of operations and cash flows.” in Item 1A. Risk Factors.

Challenges to Incentive Adders for Transmission Rates

The FERC issued a NOPR on March 20, 2020, and issued a supplemental NOPR on April 15, 2021, proposing to update its transmission incentives policy. Among other things, the rulemaking proposals would:

•grant incentives to transmission projects based upon benefits to customers ensuring reliability and reducing the cost of delivered power by reducing transmission congestion, and

•eliminate the ROE adders for independent transmission ownership and for RTO participation.

The outcome of this proposal may impact the incentive adders that our Regulated Operating Subsidiaries are authorized to apply to their base ROEs on a prospective basis. As of December 31, 2021, our MISO Regulated Operating Subsidiaries had a total of approximately $5 billion of equity in their collective capital structures for ratemaking purposes. Based on this level of aggregate equity, we estimate that each 10 basis point change in the authorized ROE would impact annual consolidated net income by approximately $5 million. For ITC Great Plains, each 10 basis point change in authorized ROE would impact annual consolidated net income by less than $1 million.

Complaints were previously filed with the FERC under section 206 of the FPA challenging the adders for independent transmission ownership that are in transmission rates charged by our MISO Regulated Operating Subsidiaries and ITC Great Plains. The FERC issued orders in these proceedings, setting revised adders for independent transmission ownership for each of the MISO Regulated Operating Subsidiaries and ITC Great Plains to 25 basis points, and the FERC orders were subsequently appealed in the D.C. Circuit Court. On February 19, 2021, the appeal of the FERC order in the proceedings for the MISO Regulated Operating Subsidiaries was denied. On March 4, 2021, the appeals of the FERC orders in the proceedings for ITC Great Plains were dismissed following a motion for voluntary dismissal by ITC Great Plains. See Note 5 to the consolidated financial statements for a summary of incentive adders for transmission rates and these matters.

Table of Contents

See also the risk factor “Certain elements of our Regulated Operating Subsidiaries’ Formula Rates have been and can be challenged, which could result in lowered rates and/or refunds of amounts previously collected and thus may have an adverse effect on our business, financial condition, results of operations and cash flows.” in Item 1A. Risk Factors.

Significant Components of Results of Operations

Revenues

We derive nearly all of our revenues from providing transmission, scheduling, control and dispatch services and other related services over our Regulated Operating Subsidiaries’ transmission systems to DTE Electric, Consumers Energy, IP&L and other entities, such as alternative energy suppliers, power marketers and other wholesale customers that provide electricity to end-use consumers, as well as from transaction-based capacity reservations on our transmission systems. MISO and SPP are responsible for billing and collecting the majority of transmission service revenues. As the billing agents for our MISO Regulated Operating Subsidiaries and ITC Great Plains, MISO and SPP collect fees for the use of our transmission systems, invoicing DTE Electric, Consumers Energy, IP&L and other customers on a monthly basis.

Network Revenues are generated from network customers for their use of our electric transmission systems and are based on the actual revenue requirements as a result of our accounting under our cost-based Formula Rates that contain a true-up mechanism. Refer below under “— Critical Accounting Policies and Estimates — Revenue Recognition under Cost-Based Formula Rates with True-Up Mechanism” for a discussion of revenue recognition relating to network revenues.

Network revenues from ITC Great Plains include the annual revenue requirements specific to projects that are charged exclusively within one pricing zone within SPP or are classified as direct assigned network upgrades under the SPP tariff and contain a true-up mechanism.

Regional Cost Sharing Revenues are generated from transmission customers throughout RTO regions for their use of our MISO Regulated Operating Subsidiaries’ network upgrade projects that are eligible for regional cost sharing under provisions of the MISO tariff, including MVPs. Additionally, certain projects at ITC Great Plains are eligible for recovery through a region-wide charge under provisions of the SPP tariff. Regional cost sharing revenues are treated as a reduction to the net network revenue requirement under our cost-based Formula Rates.

Point-to-Point Revenues consist of revenues generated from a type of transmission service for which the customer pays for transmission capacity reserved along a specified path between two points on an hourly, daily, weekly or monthly basis. Point-to-point revenues also include other components pursuant to schedules under the MISO and SPP transmission tariffs. Point-to-point revenues are treated as a revenue credit to network or regional customers and are a reduction to gross revenue requirement when calculating net revenue requirement under our cost-based Formula Rates.

Scheduling, Control and Dispatch Revenues are allocated to our MISO Regulated Operating Subsidiaries by MISO as compensation for the services performed in operating the transmission system. Such services include monitoring of reliability data, current and next day analysis, implementation of emergency procedures and outage coordination and switching.

Other Revenues consist of rental revenues, easement revenues, revenues relating to utilization of jointly owned assets under our transmission ownership and operating agreements and amounts from providing ancillary services to customers. The majority of other revenues are treated as a revenue credit and taken as a reduction to gross revenue requirement when calculating net revenue requirement under our cost-based Formula Rates.

Operating Expenses

Operation and Maintenance Expenses consist primarily of the costs for contractors that operate and maintain our transmission systems as well as our personnel involved in operation and maintenance activities.

Operation expenses include activities related to control area operations, which involve balancing loads and generation and transmission system operations activities, including monitoring the status of our transmission lines and stations. Rental expenses relating to land easements, including METC’s Easement Agreement, are also recorded within operation expenses.

Table of Contents

Maintenance expenses include preventive or planned activities, such as vegetation management, tower painting and equipment inspections, as well as reactive maintenance for equipment failures.

General and Administrative Expenses consist primarily of costs for personnel in our legal, information technology, finance, regulatory, human resources, community relations and communication functions, general office expenses and fees for professional services. Professional services are principally composed of outside legal, consulting, audit and information technology services.

Depreciation and Amortization Expenses consist primarily of depreciation of property, plant and equipment using the straight-line method of accounting. Additionally, this consists of amortization of various regulatory and intangible assets.

Taxes Other than Income Taxes consist primarily of property taxes and payroll taxes.

Other Items of Income or Expense

Interest Expense consists primarily of interest on debt at ITC Holdings and our Regulated Operating Subsidiaries. Additionally, the amortization of debt financing expenses and loss on extinguishment of debt are recorded to interest expense. An allowance for borrowed funds used during construction is included in property, plant and equipment accounts and treated as a reduction to interest expense. The amortization of gains and losses on settled and terminated derivative financial instruments is recorded to interest expense. The interest portion of the refunds relating to the MISO ROE Complaints is also recorded to interest expense.

Allowance for Equity Funds Used During Construction (“AFUDC equity”) is recorded as an item of other income and is included in property, plant and equipment accounts. The allowance represents a return on equity at our Regulated Operating Subsidiaries used for construction purposes in accordance with the FERC regulations. The capitalization rate applied to the construction work in progress balance is based on the proportion of equity to total capital (which currently includes equity and long-term debt) and the authorized return on equity for our Regulated Operating Subsidiaries.

Income Tax Provision

Income tax provision consists of current and deferred federal and state income taxes.

Table of Contents

Results of Operations

The following table summarizes historical operating results for the periods indicated:


	Year Ended						Percentage		Year Ended				Percentage
	December 31,				Increase		Increase		December 31,		Increase		Increase
(In millions of USD)	2021		2020		(Decrease)		(Decrease)		2019		(Decrease)		(Decrease)
OPERATING REVENUES
Transmission and other services	$	1,358	$	1,290	$	68	5	%	$	1,286	$	4	—	%
Formula Rate true-up	(9)		8		(17)		(213)	%	41		(33)		(80)	%
Total operating revenue	1,349		1,298		51		4	%	1,327		(29)		(2)	%
OPERATING EXPENSES
Operation and maintenance	108		87		21		24	%	113		(26)		(23)	%
General and administrative	128		115		13		11	%	138		(23)		(17)	%
Depreciation and amortization	232		219		13		6	%	203		16		8	%
Taxes other than income taxes	133		124		9		7	%	118		6		5	%
Other operating (income) and expenses, net	(1)		—		(1)		n/a		—		—		n/a
Total operating expenses	600		545		55		10	%	572		(27)		(5)	%
OPERATING INCOME	749		753		(4)		(1)	%	755		(2)		—	%
OTHER EXPENSES (INCOME)
Interest expense, net	251		240		11		5	%	224		16		7	%
Allowance for equity funds used during construction	(30)		(27)		(3)		11	%	(29)		2		(7)	%

Other (income) and expenses, net	(5)		(3)		(2)		67	%	—		(3)		n/a
Total other expenses (income)	216		210		6		3	%	195		15		8	%
INCOME BEFORE INCOME TAXES	533		543		(10)		(2)	%	560		(17)		(3)	%
INCOME TAX PROVISION	127		136		(9)		(7)	%	132		4		3	%
NET INCOME	$	406	$	407	$	(1)	—	%	$	428	$	(21)	(5)	%

Operating Revenues

Year ended December 31, 2021 compared to year ended December 31, 2020

The following table sets forth the components of and changes in operating revenues for the years ended December 31, 2021 and 2020 which included revenue accruals and deferrals as described in Note 5 to the consolidated financial statements:


											Percentage
	2021				2020				Increase		Increase
(In millions of USD)	Amount		Percentage		Amount		Percentage		(Decrease)		(Decrease)
Network revenues (a)	$	929	69	%	$	852	66	%	$	77	9	%
Regional cost sharing revenues (a)	358		27	%	362		28	%	(4)		(1)	%
Point-to-point	17		1	%	13		1	%	4		31	%
Scheduling, control and dispatch (a)	19		1	%	20		2	%	(1)		(5)	%
Other	26		2	%	19		1	%	7		37	%
Remeasurement of liabilities for ROE Complaints	—		—	%	32		2	%	(32)		(100)	%
Total	$	1,349	100	%	$	1,298	100	%	$	51	4	%

____________________________

(a)Includes a portion of the Formula Rate true-up of $(9) million and $8 million for the years ended December 31, 2021 and 2020, respectively.

Operating revenues increased primarily due to a higher rate base associated with higher balances of property, plant and equipment in-service and increased recoverable operating expenses in 2021 due to temporary cost saving measures utilized in 2020, which was partially offset by a favorable base ROE adjustment in 2020 related to prior periods as a result of the May 2020 Order.

Table of Contents

Operating Expenses

Operation and maintenance expenses

Year ended December 31, 2021 compared to year ended December 31, 2020

Operation and maintenance expense increased primarily due to higher expenses associated with substation and overhead line maintenance activities, as well as higher vegetation management requirements, primarily due to temporary cost saving measures that were utilized in 2020 as a result of the COVID-19 pandemic.

General and administrative expenses

Year ended December 31, 2021 compared to year ended December 31, 2020

General and administrative expenses increased due to higher compensation-related expenses, primarily due to an increase in share-based compensation expense.

Depreciation and amortization expenses

Year ended December 31, 2021 compared to year ended December 31, 2020

Depreciation and amortization expenses increased primarily due to a higher depreciable base resulting from property, plant and equipment in-service additions.

Taxes other than income taxes

Year ended December 31, 2021 compared to year ended December 31, 2020

Taxes other than income taxes increased due to higher property tax expenses primarily due to our Regulated Operating Subsidiaries’ 2020 capital additions and higher millage rates, which are included in the assessments for 2021 property taxes.

Other Expenses (Income)

Interest Expense, Net

Year ended December 31, 2021 compared to year ended December 31, 2020

Interest expense, net increased due to higher debt balances and higher amortization of interest as a result of losses on interest rate swaps terminated in 2020. Additionally, the May 2020 Order resulted in a reduction in our previously recorded refund obligations, as well as a corresponding reduction in interest expense in 2020. See Note 17 to the consolidated financial statements for information regarding the May 2020 Order and the associated impacts of MISO ROE Complaints.

Income Tax Provision

Year ended December 31, 2021 compared to year ended December 31, 2020

Our effective tax rates for the years ended December 31, 2021 and 2020 were 23.8% and 25.0%, respectively. Our effective tax rate as of December 31, 2021 exceeded our 21% statutory federal income tax rate primarily due to state income taxes, partially offset by AFUDC equity and a change in our amortization method associated with excess deferred tax liabilities. The amount of income tax expense relating to AFUDC equity and excess deferred tax was recognized as a regulatory asset and regulatory liability, respectively, and is not included in the income tax provision. See Note 10 to the consolidated financial statements for further discussion regarding our income tax provision.

Liquidity and Capital Resources

We expect to maintain our approach of funding our future capital requirements with cash from operations at our Regulated Operating Subsidiaries, our existing cash and cash equivalents, future issuances under our commercial paper program and amounts available under our revolving credit agreements (the terms of which are described in Note 9 to the consolidated financial statements). In addition, we may from time to time secure debt funding (including debt to finance or refinance portfolios of eligible projects based on the green bond framework established by ITC Holdings) in the capital markets, although we can provide no assurance that we will be able to obtain financing on favorable terms or at all. As market conditions warrant, we may also from time

Table of Contents

to time repurchase debt securities issued by us, in the open market, in privately negotiated transactions, by tender offer or otherwise. We expect that our capital requirements will arise principally from our need to:

•Fund capital expenditures (including purchase commitments as described in Note 17 to the consolidated financial statements) at our Regulated Operating Subsidiaries. Our plans with regard to property, plant and equipment investments are described in detail above under “— Capital Investment and Operating Results Trends.”

•Fund our debt service requirements, including principal repayments and periodic interest payments, which are further described below.

•Fund working capital requirements.

In addition to the expected capital requirements above, any adverse determinations or settlements relating to the regulatory matters or contingencies described in Notes 5 and 17 to the consolidated financial statements would result in additional capital requirements.

We believe that we have sufficient capital resources to meet our currently anticipated short-term (within twelve months) needs. However, we rely on both internal and external sources of liquidity to provide working capital and fund capital investments. The COVID-19 pandemic has impacted the global economy and capital markets in various ways, including negative impacts which have varied in duration and magnitude. An extended period of economic disruption could impact our ability to access the capital markets requiring us to seek alternative forms of financing which could negatively impact our liquidity and capital resources. ITC Holdings’ sources of cash are dividends and other payments received by us from our Regulated Operating Subsidiaries and any of our other subsidiaries as well as the proceeds raised from the sale of our debt securities. Each of our Regulated Operating Subsidiaries, while wholly-owned by ITC Holdings, is legally distinct from ITC Holdings and has no obligation, contingent or otherwise, to make funds available to us.

We expect to continue to utilize our commercial paper program and revolving credit agreements as well as our cash and cash equivalents as needed to meet our short-term (within twelve months) cash requirements. As of December 31, 2021, we had consolidated indebtedness under our revolving credit agreements of $329 million, with unused capacity under our revolving credit agreements of $571 million. ITC Holdings had $155 million of commercial paper issued and outstanding, net of discount, as of December 31, 2021, with the ability to issue an additional $245 million under the commercial paper program. In 2021, we paid $4 million of interest and commitment fees under our revolving credit agreements and commercial paper program.

To address our future capital requirements, we expect that we will need to obtain additional long-term debt financing. As of December 31, 2021, we had various notes and bonds outstanding with terms, including fixed interest rate and principal payment terms, specific to each borrowing. Maturity dates for these long-term debt issuances range from 2022 to 2055. Total future interest payment obligations associated with these existing fixed-rate, long-term debt obligations were $3.9 billion as of December 31, 2021, with expected interest payment obligations of $240 million due within the next twelve months. Certain of our capital projects could be delayed if we experience difficulties in accessing capital pursuant to complications from COVID-19, or otherwise. We expect to be able to obtain such additional financing as needed, in amounts and upon terms that will be acceptable to us due to our strong credit ratings and our historical ability to obtain financing. See Note 9 to the consolidated financial statements for a detailed discussion of our debt activity, including the commercial paper program and our term loan and revolving credit agreements, during the years ended December 31, 2021 and 2020.

METC has a contractual obligation through December 31, 2050 for an Easement Agreement for transmission purposes and rights-of-way, leasehold interests, fee interests and licenses associated with the land over which the transmission lines cross. The cost for use of the rights-of-way is $10 million per year. See Note 17 to the consolidated financial statements for additional details related to the easement.

We have certain obligations including contingent liabilities and other current and long-term liabilities, that have uncertainty regarding the timing and any amount of future cash flows necessary to settle these obligations. Such items include:

•long-term incentive awards;

•pension and other postretirement obligations;

Table of Contents

•regulatory liabilities related to asset removal costs and refundable income taxes; and

•liabilities to refund deposits from generators for transmission network upgrades.

We have exposure to LIBOR through the revolving credit agreements of ITC Holdings and certain of our Regulated Operating Subsidiaries. Certain tenors of LIBOR began being phased out in late 2021, with full discontinuation planned for mid-2023. We believe the rate selected as the preferred alternative to LIBOR will be an acceptable replacement rate when LIBOR is fully discontinued. However, we plan to continue using the available LIBOR tenors until 2023 and as such cannot reasonably estimate the expected impact of the planned discontinuation of LIBOR at this time.

Credit Ratings

Credit ratings by nationally recognized statistical rating agencies are an important component of our liquidity profile. Credit ratings relate to our ability to issue debt securities and the cost to borrow money and should not be viewed as a recommendation to buy, sell or hold securities. Ratings are subject to revision or withdrawal at any time and each rating should be evaluated independently of any other rating. Our current credit ratings are displayed in the following table. An explanation of these ratings may be obtained from the respective rating agency.

S&P

Moody’s

Rating

Outlook (a)

Rating

Outlook

ITC Holdings

Senior Unsecured Notes

BBB+

Stable

Baa2

Stable

Commercial Paper

A-2

Stable

Prime-2

Stable

ITCTransmission

First Mortgage Bonds

Stable

METC

Senior Secured Notes

Stable

ITC Midwest

First Mortgage Bonds

Stable

ITC Great Plains

First Mortgage Bonds

Stable

_____________________

(a)On April 1, 2021, S&P reaffirmed the ratings of ITC Holdings and certain of our Regulated Operating Subsidiaries and revised all outlooks from negative to stable.

Covenants

Our debt instruments contain numerous financial and operating covenants that place significant restrictions on certain transactions, such as incurring additional indebtedness, engaging in sale and lease-back transactions, creating liens or other encumbrances, entering into mergers, consolidations, liquidations or dissolutions, creating or acquiring subsidiaries and selling or otherwise disposing of all or substantially all of our assets. In addition, the covenants require us to meet certain financial ratios, such as maintaining certain debt to capitalization ratios and certain funds from operations to debt levels. As of December 31, 2021, we were not in violation of any debt covenant. In the event of a downgrade in our credit ratings, none of the covenants would be directly impacted, although the borrowing costs under our revolving credit agreements may increase.

Table of Contents

Cash Flows

The following table summarizes cash flows for the periods indicated:


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	406	$	407	$	428
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	232		219		203
Recognition, refund and collection of revenue accruals and deferrals — including accrued interest	52		(47)		(55)
Deferred income tax expense	127		138		135
Other	(32)		(85)		(82)
Net cash provided by operating activities	785		632		629
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(834)		(885)		(865)
Contributions in aid of construction	15		2		10
Other	(5)		5		1
Net cash used in investing activities	(824)		(878)		(854)
CASH FLOWS FROM FINANCING ACTIVITIES
Net issuance/repayment of debt (including commercial paper and revolving and term loan credit agreements)	294		561		463


Dividends to ITC Investment Holdings	(232)		(330)		(250)
Refundable deposits from and repayments to generators for transmission network upgrades, net	(21)		50		11
Settlement of interest rate swaps	—		(23)		—
Other	(1)		(12)		(3)
Net cash provided by financing activities	40		246		221
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	1		—		(4)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — Beginning of period	6		6		10
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — End of period	$	7	$	6	$	6

Cash Flows From Operating Activities

Year ended December 31, 2021 compared to year ended December 31, 2020

Net cash provided by operating activities was $785 million and $632 million for the years ended December 31, 2021 and 2020, respectively. The increase in cash provided by operating activities was due primarily to an increase in cash received from operating revenues of $162 million compared to the year ended December 31, 2020 and lower net payments related to the MISO ROE Complaints of $26 million, including interest, refunded to customers. This increase was partially offset by higher operation and maintenance expenses and general and administrative expenses during the year ended December 31, 2021 compared to the year ended December 31, 2020.

Cash Flows From Investing Activities

Year ended December 31, 2021 compared to year ended December 31, 2020

Net cash used in investing activities was $824 million and $878 million for the years ended December 31, 2021 and 2020, respectively. The decrease in cash used in investing activities was primarily due to a decrease in capital expenditures of $51 million and an increase in contributions in aid of construction of $13 million received during the year ended December 31, 2021 compared to the year ended December 31, 2020.

Table of Contents

Cash Flows From Financing Activities

Year ended December 31, 2021 compared to year ended December 31, 2020

Net cash provided by financing activities was $40 million and $246 million for the years ended December 31, 2021 and 2020, respectively. The decrease in cash provided by financing activities was due primarily to a decrease in issuances of long-term debt of $955 million and an increase in net repayments of refundable deposits for transmission network upgrades of $71 million during the year ended December 31, 2021 compared to the year ended December 31, 2020. This decrease was partially offset by a decrease in retirement of long-term debt of $35 million, an increase in net borrowings under our revolving credit agreements of $232 million, a decrease in net repayments under our term loan credit agreements of $200 million, an increase in net issuances of commercial paper of $221 million, a decrease in dividend payments of $98 million and a decrease in settlement of interest rate swaps of $23 million during the year ended December 31, 2021 compared to the year ended December 31, 2020. See Note 9 to the consolidated financial statements for additional discussion on debt and interest rate swaps.

Critical Accounting Policies and Estimates

Our consolidated financial statements are prepared in accordance with GAAP. The preparation of these consolidated financial statements requires the application of appropriate technical accounting rules and guidance, as well as the use of estimates. The application of these policies requires judgments regarding future events.

These estimates and judgments, in and of themselves, could materially impact the consolidated financial statements and disclosures based on varying assumptions, as future events rarely develop exactly as forecasted, and even the best estimates routinely require adjustment.

The following accounting policies are the most significant to the portrayal of our financial condition and results of operations and/or that require management’s most difficult, subjective or complex judgments.

Regulation

Our Regulated Operating Subsidiaries are subject to rate regulation by the FERC. As a result, we apply accounting principles in accordance with the standards set forth by the FASB for accounting for the effects of certain types of regulation. Use of this accounting guidance results in differences in the application of GAAP between regulated and non-regulated businesses and requires the recording of regulatory assets and liabilities for certain transactions that would have been treated as expense or revenue in non-regulated businesses. As described in Note 6 to the consolidated financial statements, we had regulatory assets and liabilities of $211 million and $633 million, respectively, as of December 31, 2021. Future changes in the regulatory and competitive environments could result in discontinuing the application of the accounting standards for the effects of certain types of regulations. If we were to discontinue the application of this guidance on the operations of our Regulated Operating Subsidiaries, we may be required to record losses relating to certain regulatory assets or gains relating to certain regulatory liabilities. We also may be required to record losses of $26 million relating to intangible assets at December 31, 2021 that are described in Note 8 to the consolidated financial statements.

We believe that currently available facts support the continued applicability of the standards for accounting for the effects of certain types of regulation and that all regulatory assets and liabilities are recoverable or refundable under our current rate environment.

Revenue Recognition under Cost-Based Formula Rates with True-Up Mechanism

Our Regulated Operating Subsidiaries recover expenses and earn an authorized return on and recover investments in property, plant and equipment on a current basis, under their forward-looking cost-based Formula Rates with a true-up mechanism.

Under their Formula Rates, our Regulated Operating Subsidiaries use forecasted expenses, property, plant and equipment, point-to-point revenues and other items for the upcoming calendar year to establish their projected revenue requirement and for the MISO Regulated Operating Subsidiaries, their component of the billed network rates for service on their systems from January 1 to December 31 of that year. Our Formula Rates include a true-up mechanism, whereby our Regulated Operating Subsidiaries compare their actual revenue requirements to their billed revenues for each year to determine any over- or under-collection of revenue. The over- or under-collection typically results from differences between the projected revenue

Table of Contents

requirement used as the basis for billing and actual revenue requirement at each of our Regulated Operating Subsidiaries, or from differences between actual and projected monthly network peak loads at our MISO Regulated Operating Subsidiaries.

The true-up mechanisms under our Formula Rates meet the GAAP requirements for accounting for rate-regulated utilities and the effects of certain alternative revenue programs. Accordingly, revenue is recognized during each reporting period based on actual revenue requirements calculated using the cost-based Formula Rates. Our Regulated Operating Subsidiaries accrue or defer revenues to the extent that their actual revenue requirement for the reporting period is higher or lower, respectively, than the amounts billed relating to that reporting period. The true-up amount is automatically reflected in customer bills within two years under the provisions of the Formula Rates. See Note 6 to the consolidated financial statements for the regulatory assets and liabilities recorded at our Regulated Operating Subsidiaries’ as a result of the Formula Rate revenue accruals and deferrals.

Contingent Obligations

See Note 2 to the consolidated financial statements for a description of the policy for estimating contingent obligations. The adequacy of liabilities recorded for contingent obligations can be significantly affected by external events or conditions that can be unpredictable; thus, the ultimate outcome of such matters could materially affect our consolidated financial statements. These events or conditions include, without limitation, the following:

•Changes in existing state or federal regulation by governmental authorities having jurisdiction over air quality, water quality, control of toxic substances, hazardous and solid wastes and other environmental matters.

•Changes in existing federal income tax laws or IRS regulations.

•Identification and evaluation of lawsuits or complaints in which we may be or have been named as a defendant.

•Resolution or progression of existing matters through the legislative process, the courts, the FERC, the NERC, the IRS or the Environmental Protection Agency.

Refer to Note 17 to the consolidated financial statements for discussion on contingencies, including the MISO ROE Complaints.

Pension and Postretirement Benefit Plan Assumptions

We sponsor certain retirement benefits for our employees, which include retirement pension plans and certain postretirement health care, dental and life insurance benefits. Our periodic costs and obligations associated with these plans are developed from actuarial valuations derived from a number of assumptions. Key assumptions include:

•Discount rates used to determine obligations,

•Expected long-term returns on plan assets,

•Rate of salary increases,

•Mortality, and

•Rate of increase in health care costs.

Discount Rates

Benefit obligations, service cost and interest cost are determined by separately discounting projected benefit payments using a yield curve of high-quality corporate bonds. As of December 31, 2021, the weighted-average single equivalent discount rate for the benefit obligation was 2.86% and 3.14% for our pension and postretirement benefit plans, respectively.

Expected Long-Term Rate of Return on Plan Assets

In determining our long-term rate of return on plan assets, we consider the current and expected asset allocations, as well as historical and expected long-term rates of return on those types of asset classes. For the

Table of Contents

year ended December 31, 2021, we assumed that our pension and postretirement benefit plans’ assets would generate weighted-average long-term rates of return of 5.70% and 4.30%, respectively.

Salary Increases

As of December 31, 2021, we used an annual rate of salary increases of 4.00% to determine our pension and postretirement plan obligations.

Mortality

The Pri-2012 mortality table projected forward generationally from 2012 with the MP-2020 mortality improvement scale was used to determine pension and postretirement plan obligations as of December 31, 2021.

Rate of Increase in Healthcare Costs

We used a current year healthcare cost trend rate of 6.00% for 2021 grading down to a 5.00% ultimate rate in 2025 in valuing our postretirement benefit obligation as of December 31, 2021. These rates are based on a review of recent and expected future experience.

Sensitivity Analysis

The below table displays the effect on our costs and obligation of a 1% change to our assumptions as of December 31, 2021:


	Effect on Costs		Effect on Obligation
(in millions of USD)	1% Increase	1% Decrease	1% Increase	1% Decrease
Change to Pension Plans
Discount Rate	$—	$2	$(17)	$21
Long-Term Rate of Return on Plan Assets	(1)	1	N/A	N/A
Change to Postretirement Plan
Discount Rate	(4)	2	(22)	28
Long-Term Rate of Return on Plan Assets	(1)	1	N/A	N/A
Healthcare Cost Trend Rate	$4	$(5)	$24	$(19)

See Note 11 to the consolidated financial statements for further details regarding our pension and postretirement benefit plan costs and obligations.

Off-Balance Sheet Arrangements

We have no off-balance sheet arrangements that have or are reasonably likely to have a material effect on our financial condition.

Recent Accounting Pronouncements

We have considered all new accounting pronouncements issued by the FASB and determined that it is not likely that any of the recently issued accounting guidance will have a material impact on our consolidated financial statements.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

Commodity Price Risk

We have commodity price risk at our Regulated Operating Subsidiaries arising from market price fluctuations for materials such as copper, aluminum, steel, oil and gas and other goods used in construction and maintenance activities. Higher costs of these materials are passed on to us by the contractors for these activities. These items affect only cash flows, as the amounts are included as components of net revenue requirement and any higher costs are included in rates under their cost-based Formula Rates.

Table of Contents

Interest Rate Risk

Fixed Rate Debt

Based on the borrowing rates currently available for bank loans with similar terms and average maturities, the fair value of our consolidated long-term debt and debt maturing within one year, excluding revolving credit agreements and commercial paper, was $6,995 million and $7,119 million at December 31, 2021 and 2020, respectively. The total book value of our consolidated long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving credit agreements and commercial paper, was $6,179 million and $6,097 million at December 31, 2021 and 2020, respectively. We performed an analysis calculating the impact of changes in interest rates on the fair value of long-term debt and debt maturing within one year, excluding revolving credit agreements and commercial paper at December 31, 2021 and 2020. An increase in interest rates of 10% (from 5.0% to 5.5%, for example) at December 31, 2021 and 2020 would decrease the fair value of debt by $217 million and $213 million, respectively, and a decrease in interest rates of 10% at December 31, 2021 and 2020 would increase the fair value of debt by $231 million and $227 million, respectively, at that date.

Revolving Credit Agreements

At December 31, 2021 and 2020, we had a consolidated total of $329 million and $198 million, respectively, outstanding under our revolving credit agreements, which are variable rate loans and fair value approximates book value. A 10% increase or decrease in borrowing rates under the revolving credit agreements compared to the weighted average rates in effect at December 31, 2021 and 2020 would increase or decrease interest expense by less than $1 million for an annual period with a constant borrowing level of $329 million and $198 million, respectively.

Commercial Paper

At December 31, 2021 and 2020, ITC Holdings had $155 million and $67 million, respectively, of commercial paper issued and outstanding, net of discount, under the commercial paper program. Due to the short-term nature of these financial instruments, the carrying value approximates fair value. A 10% increase or decrease in interest rates for commercial paper would increase or decrease interest expense by less than $1 million for an annual period with a continuous level of commercial paper outstanding of $155 million and $67 million at December 31, 2021 and 2020, respectively.

Derivative Instruments and Hedging Activities

We use derivative financial instruments, including interest rate swap contracts, to manage our exposure to fluctuations in interest rates. The use of these financial instruments mitigates exposure to these risks and the variability of our operating results. We are not a party to leveraged derivatives and do not enter into derivative financial instruments for trading or speculative purposes.

As of December 31, 2021, we held 5-year interest rate swap contracts with a notional amount of $375 million, which manages interest rate risk associated with the forecasted future issuance of fixed-rate debt at ITC Holdings, the proceeds of which will be used for the expected repayment of the ITC Holdings 2.70% Senior Notes, due November 15, 2022. See Note 9 to the consolidated financial statements for further discussion on these interest rate swaps. At December 31, 2020, ITC Holdings did not have any interest rate swaps outstanding.

Credit Risk

Our credit risk is primarily with DTE Electric, Consumers Energy and IP&L, which were responsible for approximately 21.5%, 23.5% and 24.7%, respectively, or $300 million, $327 million and $344 million, respectively, of our consolidated billed revenues for the year ended December 31, 2021. This portion of total billed revenues of DTE Electric, Consumers Energy and IP&L include the collection of 2019 revenue accruals and deferrals and exclude any amounts for the 2021 revenue accruals and deferrals that were included in our 2021 operating revenues but will not be billed to our customers until 2023.

For the year ended December 31, 2020, our credit risk was primarily with DTE Electric, Consumers Energy and IP&L, which were responsible for approximately 21.6%, 23.9% and 23.9%, respectively, or $265 million, $292 million and $292 million, respectively, of our consolidated billed revenues. These percentages and amounts of total billed revenues of DTE Electric, Consumers Energy and IP&L include the collection of 2018

Table of Contents

revenue accruals and deferrals and exclude any amounts for the 2020 revenue accruals and deferrals that were included in our 2020 operating revenues but will not be billed to our customers until 2022.

Refer to “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Cost-Based Formula Rates with True-Up Mechanism” for a discussion on the difference between billed revenues and operating revenues. Under DTE Electric’s and Consumers Energy’s current rate structure, DTE Electric and Consumers Energy include in their retail rates the actual cost of transmission services provided by ITCTransmission and METC, respectively, in their billings to their customers, effectively passing through to end-use consumers the total cost of transmission service. IP&L currently includes in their retail rates an allowance for transmission services provided by ITC Midwest in their billings to their customers. However, any financial difficulties experienced by DTE Electric, Consumers Energy or IP&L may affect their ability to make payments for transmission service to ITCTransmission, METC, and ITC Midwest, which could negatively impact our business. MISO, as our MISO Regulated Operating Subsidiaries’ billing agent, bills DTE Electric, Consumers Energy, IP&L and other customers on a monthly basis and collects fees for the use of the MISO Regulated Operating Subsidiaries’ transmission systems. SPP is the billing agent for ITC Great Plains and bills transmission customers for the use of ITC Great Plains transmission systems. MISO and SPP have implemented strict credit policies for its members’ customers, which include customers using our transmission systems. Specifically, MISO and SPP require a letter of credit or cash deposit equal to the credit exposure, which is determined by a credit scoring model and other factors, from any customer using a member’s transmission system.

Table of Contents

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.

The following financial statements and schedules are included herein:


						Page
Management’s Report on Internal Control over Financial Reporting						42
Report of Independent Registered Public Accounting Firm (PCAOB ID No. 34)						43
Consolidated Statements of Financial Position as of December 31, 2021 and 2020						45
Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2021, 2020 and 2019						46
Consolidated Statements of Changes in Stockholder’s Equity for the Years Ended December 31, 2021, 2020 and 2019						47
Consolidated Statements of Cash Flows for the Years Ended December 31, 2021, 2020 and 2019						48
Notes to Consolidated Financial Statements						49
Schedule I — Condensed Financial Information of Registrant						126

Table of Contents

MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Management is responsible for establishing and maintaining adequate internal control over financial reporting. Our internal control over financial reporting is designed to provide reasonable, not absolute, assurance as to the reliability of our financial reporting and the preparation of consolidated financial statements in accordance with generally accepted accounting principles. Internal control over financial reporting, no matter how well designed, has inherent limitations. Therefore, internal control over financial reporting determined to be effective can provide only reasonable assurance with respect to financial statement preparation and may not prevent or detect all misstatements.

Under management’s supervision, an evaluation of the design and effectiveness of our internal control over financial reporting was conducted based on the criteria set forth in Internal Control — Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). Our assessment included documenting, evaluating and testing of the design and operating effectiveness of our internal control over financial reporting. Based on this evaluation, management concluded that our internal control over financial reporting was effective as of December 31, 2021.

Table of Contents

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors and Stockholders of

ITC Holdings Corp.

Novi, Michigan

Opinion on the Financial Statements

We have audited the accompanying consolidated statements of financial position of ITC Holdings Corp. and subsidiaries (the "Company") as of December 31, 2021 and 2020, the related consolidated statements of comprehensive income, shareholders' equity, and cash flows for each of the three years in the period ended December 31, 2021, and the related notes and the schedule listed in the Index at Item 15 (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2021, in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB and in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Regulatory Matters — Impact of rate regulation on the financial statements – Refer to Notes 2, 5, and 6 to the financial statements

Critical Audit Matter Description

The Company’s regulated operating subsidiaries are subject to rate regulation by the Federal Energy Regulatory Commission (the “regulatory agency”). Management has determined it meets the requirements under accounting principles generally accepted in the United States of America to prepare its financial

Table of Contents

statements applying the specialized rules to account for the effects of cost-based rate regulation. The Company’s rates are subject to regulatory rate-setting processes through a formula rate with a true-up mechanism, including an authorized return on equity. Regulatory decisions can have an impact on rates, recovery of certain costs, including the costs of transmission assets and regulatory assets, conditions of service, accounting, financing authorization and operating-related matters, the timely recovery of costs and the return on equity. Accounting for the economics of rate regulation impacts multiple financial statement line items and disclosures, such as property, plant, and equipment; regulatory assets and liabilities; operating revenues and expenses; and income taxes.

We identified the impact of rate regulation as a critical audit matter due to the significant judgments made by management to support its assertions about impacted account balances and disclosures and the high degree of subjectivity involved in assessing the potential impact of future regulatory orders on the financial statements. Management judgments include assessing the likelihood of recovery of costs incurred or potential refunds to customers. While the Company has indicated they expect to recover costs from customers through regulated rates, there is a risk that the formula inputs remain subject to legal challenge at the regulatory agency. The Company uses the formula to calculate annual revenue requirements unless the regulatory agency determines the resulting rates to be unjust and unreasonable. Auditing these judgments required especially subjective judgment and specialized knowledge of accounting for rate regulation and the rate-setting process due to their inherent complexities.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the uncertainty of future decisions by the regulatory agency included the following, among others:

•We evaluated the effectiveness of controls over the monitoring and evaluation of regulatory developments that may affect the likelihood of recovering costs in future rates or of a future reduction in rates.

•We assessed relevant regulatory orders, regulatory statutes and interpretations, as well as procedural memorandums, utility and intervener filings, and other publicly available information to evaluate the likelihood of recovery in future rates or of future reduction in rates and the ability to earn a reasonable return on equity.

•For regulatory matters in process, we inspected the annual formula rate filings and open complaints for any evidence that might contradict management’s assertions. We obtained and evaluated an analysis from management, regarding cost recoveries or potential future reduction in rates.

•We evaluated the Company’s disclosures related to the impacts of rate regulation, including the balances recorded and regulatory developments.

/s/ DELOITTE & TOUCHE LLP

Detroit, Michigan

February 10, 2022

We have served as the Company's auditor since 2001.

Table of Contents

ITC HOLDINGS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION


	December 31,
(In millions of USD, except share data)	2021		2020
ASSETS
Current assets
Cash and cash equivalents	$	5	$	4
Accounts receivable	128		114
Inventory	45		42
Regulatory assets	21		52

Prepaid and other current assets	18		12
Total current assets	217		224
Property, plant and equipment (net of accumulated depreciation and amortization of $2,199 and $2,055, respectively)	9,961		9,327
Other assets
Goodwill	950		950
Intangible assets (net of accumulated amortization of $49 and $46, respectively)	26		29
Regulatory assets	190		212

Other assets	101		83
Total other assets	1,267		1,274
TOTAL ASSETS	$	11,445	$	10,825
LIABILITIES AND STOCKHOLDER’S EQUITY
Current liabilities
Accounts payable	$	127	$	130
Accrued compensation	72		55
Accrued interest	56		55
Accrued taxes	64		61
Regulatory liabilities	14		14
Refundable deposits and advances for construction	44		37
Debt maturing within one year	654		67
Other current liabilities	16		18
Total current liabilities	1,047		437
Accrued pension and postretirement liabilities	52		59
Deferred income taxes	1,161		1,013
Regulatory liabilities	619		612
Refundable deposits	28		65
Other liabilities	55		50
Long-term debt	6,009		6,295
Commitments and contingent liabilities (Notes 5 and 17)
TOTAL LIABILITIES	8,971		8,531
STOCKHOLDER’S EQUITY
Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December 31, 2021 and 2020	892		892
Retained earnings	1,584		1,410
Accumulated other comprehensive loss	(2)		(8)
Total stockholder’s equity	2,474		2,294
TOTAL LIABILITIES AND STOCKHOLDER’S EQUITY	$	11,445	$	10,825

See notes to consolidated financial statements.

Table of Contents

ITC HOLDINGS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
OPERATING REVENUES
Transmission and other services	$	1,358	$	1,290	$	1,286
Formula Rate true-up	(9)		8		41
Total operating revenue	1,349		1,298		1,327
OPERATING EXPENSES
Operation and maintenance	108		87		113
General and administrative	128		115		138
Depreciation and amortization	232		219		203
Taxes other than income taxes	133		124		118
Other operating (income) and expense, net	(1)		—		—
Total operating expenses	600		545		572
OPERATING INCOME	749		753		755
OTHER EXPENSES (INCOME)
Interest expense, net	251		240		224
Allowance for equity funds used during construction	(30)		(27)		(29)

Other (income) and expenses, net	(5)		(3)		—
Total other expenses (income)	216		210		195
INCOME BEFORE INCOME TAXES	533		543		560
INCOME TAX PROVISION	127		136		132
NET INCOME	406		407		428
OTHER COMPREHENSIVE INCOME (LOSS)
Derivative instruments, net of tax (Note 13)	6		(15)		3

TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	6		(15)		3
TOTAL COMPREHENSIVE INCOME	$	412	$	392	$	431

See notes to consolidated financial statements.

Table of Contents

ITC HOLDINGS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN

STOCKHOLDER’S EQUITY


					Accumulated
					Other		Total
			Retained		Comprehensive		Stockholder’s
	Common Stock		Earnings		Income (Loss)		Equity
(In millions of USD)
BALANCE, DECEMBER 31, 2018	$	892	$	1,155	$	4	$	2,051

Net income	—		428		—		428


Dividends to ITC Investment Holdings	—		(250)		—		(250)






Other comprehensive income, net of tax (Note 13)	—		—		3		3

BALANCE, DECEMBER 31, 2019	$	892	$	1,333	$	7	$	2,232

Net income	—		407		—		407
Dividends to ITC Investment Holdings	—		(330)		—		(330)
Other comprehensive loss, net of tax (Note 13)	—		—		(15)		(15)
BALANCE, DECEMBER 31, 2020	$	892	$	1,410	$	(8)	$	2,294

Net income	—		406		—		406
Dividends to ITC Investment Holdings	—		(232)		—		(232)
Other comprehensive income, net of tax (Note 13)	—		—		6		6
BALANCE, DECEMBER 31, 2021	$	892	$	1,584	$	(2)	$	2,474

See notes to consolidated financial statements.

Table of Contents

ITC HOLDINGS CORP. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	406	$	407	$	428
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization expense	232		219		203
Recognition, refund and collection of revenue accruals and deferrals — including accrued interest	52		(47)		(55)
Deferred income tax expense	127		138		135
Allowance for equity funds used during construction	(30)		(27)		(29)

Share-based compensation	34		25		32
Other	6		4		10
Changes in assets and liabilities, exclusive of changes shown separately:
Accounts receivable	(18)		—		(10)



Accounts payable	(3)		4		(11)
Accrued interest	1		7		(2)
Accrued compensation	(3)		(14)		10
Accrued taxes	3		(3)		3


Net refund settlements and adjustments related to return on equity complaints	(5)		(65)		(82)
Other current and non-current assets and liabilities, net	(17)		(16)		(3)
Net cash provided by operating activities	785		632		629
CASH FLOWS FROM INVESTING ACTIVITIES
Expenditures for property, plant and equipment	(834)		(885)		(865)
Contributions in aid of construction	15		2		10


Other	(5)		5		1
Net cash used in investing activities	(824)		(878)		(854)
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	75		1,030		175
Borrowings under revolving credit agreements	1,175		1,495		1,090
Borrowings under term loan credit agreements	—		275		200
Net issuance (repayment) of commercial paper	88		(133)		200
Retirement of long-term debt — including extinguishment of debt costs	—		(35)		(203)
Repayments of revolving credit agreements	(1,044)		(1,596)		(999)
Repayments of term loan credit agreements	—		(475)		—


Dividends to ITC Investment Holdings	(232)		(330)		(250)
Refundable deposits from generators for transmission network upgrades	18		60		19
Repayment of refundable deposits from generators for transmission network upgrades	(39)		(10)		(8)



Settlement of interest rate swaps	—		(23)		—


Other	(1)		(12)		(3)
Net cash provided by financing activities	40		246		221
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	1		—		(4)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — Beginning of period	6		6		10
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — End of period	$	7	$	6	$	6

See notes to consolidated financial statements.

Table of Contents

ITC HOLDINGS CORP. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. GENERAL

ITC Holdings and its subsidiaries are engaged in the transmission of electricity in the United States. ITC Holdings is a wholly-owned subsidiary of ITC Investment Holdings. Fortis owns a majority indirect equity interest in ITC Investment Holdings, with GIC holding an indirect, passive, non-voting equity interest of 19.9%. Through our Regulated Operating Subsidiaries, we own, operate, maintain and invest in high-voltage electric transmission systems in Michigan’s Lower Peninsula and portions of Iowa, Minnesota, Illinois, Missouri, Kansas, and Oklahoma that transmit electricity from generating stations to local distribution facilities connected to our transmission systems.

Our Regulated Operating Subsidiaries are independent electric transmission utilities, with cost-based rates regulated by the FERC. ITCTransmission’s service area is located in southeastern Michigan, while METC’s service area covers approximately two-thirds of Michigan’s Lower Peninsula and is contiguous with ITCTransmission’s service area. ITC Midwest’s service area is located in portions of Iowa, Minnesota, Illinois and Missouri and ITC Great Plains currently owns assets located in Kansas and Oklahoma. MISO bills and collects revenues from the MISO Regulated Operating Subsidiaries’ customers. SPP bills and collects revenue from ITC Great Plains’ customers. ITC Interconnection currently owns assets in Michigan and earns revenues based on its facilities reimbursement agreement with a merchant generating company.

Recent Developments Regarding the COVID-19 Pandemic

2. SIGNIFICANT ACCOUNTING POLICIES

A summary of the major accounting policies followed in the preparation of the accompanying consolidated financial statements, which conform to GAAP, is presented below:

Principles of Consolidation — ITC Holdings consolidates its majority owned subsidiaries. We eliminate all intercompany balances and transactions.

Use of Estimates — The preparation of the consolidated financial statements requires us to use estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from our estimates.

Regulation — Our Regulated Operating Subsidiaries are subject to the regulatory jurisdiction of the FERC, which issues orders pertaining to rates, recovery of certain costs, including the costs of transmission assets and regulatory assets, conditions of service, accounting, financing authorization and operating-related matters. The utility operations of our Regulated Operating Subsidiaries meet the accounting standards set forth by the FASB for the accounting effects of certain types of regulation. These accounting standards recognize the cost-based rate setting process, which results in differences in the application of GAAP between regulated and non-regulated businesses. These standards require the recording of regulatory assets and liabilities for certain transactions that would have been recorded as revenue and expense in non-regulated businesses. Regulatory assets represent costs that will be

Table of Contents

included as a component of future tariff rates and regulatory liabilities represent amounts provided in the current tariff rates that are intended to recover costs expected to be incurred in the future or amounts to be refunded to customers.

Cash and Cash Equivalents — We consider all unrestricted highly-liquid temporary investments with an original maturity of three months or less at the date of purchase to be cash equivalents.

Restricted Cash and Restricted Cash Equivalents — Restricted cash and restricted cash equivalents include cash and cash equivalents that are legally or contractually restricted for use or withdrawal or are formally set aside for a specific purpose.

Accounts Receivable Reserve — We recognize losses for uncollectible accounts based on the current expected credit loss model. As of December 31, 2021, 2020 and 2019 we did not have an accounts receivable reserve.

Inventories — Materials and supplies inventories are valued at average cost. Additionally, the costs of warehousing activities are recorded here and included in the cost of materials when requisitioned.

Property, Plant and Equipment — Depreciation and amortization expense on property, plant and equipment was $223 million, $209 million and $194 million for 2021, 2020 and 2019, respectively.

Property, plant and equipment in service at our Regulated Operating Subsidiaries is stated at its original cost when first devoted to utility service. The gross book value of assets retired less salvage proceeds is charged to accumulated depreciation. The provision for depreciation of transmission assets is a significant component of our Regulated Operating Subsidiaries’ cost of service under FERC-approved rates. Periodically we perform depreciation studies of the assets at our Regulated Operating Subsidiaries. The results of these studies are submitted to, and require approval from the FERC prior to changing our depreciation rates. Depreciation is computed over the estimated useful lives of the assets using the straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes. The composite depreciation rate for our Regulated Operating Subsidiaries included in our consolidated statements of comprehensive income was 2.0% for 2021, 2020 and 2019. The composite depreciation rates include depreciation primarily on transmission station equipment, towers, poles and overhead and underground lines that have a useful life ranging from 45 to 60 years. The portion of depreciation expense related to asset removal costs is added to regulatory liabilities or deducted from regulatory assets and removal costs incurred are deducted from regulatory liabilities or added to regulatory assets. Certain of our Regulated Operating Subsidiaries capitalize to property, plant and equipment AFUDC in accordance with FERC regulations. AFUDC represents the composite cost incurred to fund the construction of assets, including interest expense and a return on equity capital devoted to construction of assets. The interest component of AFUDC was a reduction to interest expense of $8 million, $7 million and $8 million for 2021, 2020 and 2019, respectively.

For acquisitions of property, plant and equipment greater than the net book value (other than asset acquisitions accounted for under the purchase method of accounting that result in goodwill), the acquisition premium is recorded to property, plant and equipment and amortized over the estimated remaining useful lives of the assets using the straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes.

Property, plant and equipment includes capital equipment inventory stated at original cost consisting of items that are expected to be used exclusively for capital projects.

Property, plant and equipment at our non-regulated subsidiaries is stated at its acquired cost. Proceeds from salvage less the net book value of the disposed assets is recognized as a gain or loss on disposal. Depreciation is computed based on the acquired cost less expected residual value and is recognized over the estimated useful lives of the assets on a straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes.

Generator Interconnection Projects and Contributions in Aid of Construction — Certain capital investment at our Regulated Operating Subsidiaries relates to investments made under GIAs. The GIAs typically consist of both transmission network upgrades, which are a category of upgrades deemed by the FERC to benefit the transmission system as a whole, as well as direct connection facilities, which are necessary to interconnect the generating facility to the transmission system and primarily benefit the

Table of Contents

generating facility. As a result, GIAs typically require the generator to make a contribution in aid of construction to our Regulated Operating Subsidiaries to cover the cost of certain investments made by us as part of the agreement.

Our investments in transmission facilities are recorded to property, plant and equipment, and are recorded net of any contribution in aid of construction. We also receive refundable deposits from the generator for certain investment in network upgrade facilities in advance of construction, which are recorded to current or non-current liabilities depending on the expected refund date.

Jointly Owned Utility Plant/Coordinated Services — Certain of our Regulated Operating Subsidiaries have agreements with other utilities for the joint ownership of substation assets and transmission lines as described in Note 15. We account for these jointly owned assets by recording property, plant and equipment for the percentage of our undivided ownership interest. Various agreements provide the authority for construction of capital improvements and the operating costs associated with the substations and lines. Generally, each party is responsible for the capital, operation and maintenance and other costs of these jointly owned facilities based upon each participant’s undivided ownership interest, and each participant is responsible for providing its own financing. Our participating share of expenses associated with these jointly held assets are primarily recorded within operation and maintenance expenses on our consolidated statements of comprehensive income.

Fair Value Through Net Income — We have certain investments in mutual funds, including fixed income securities and equity securities that are classified as fair value through net income. The fixed income security investments primarily fund our two supplemental nonqualified, noncontributory, retirement benefit plans for selected management employees as described in Note 11. Gains and losses associated with our mutual funds as described in Note 12 are recorded in earnings.

Impairment of Long-Lived Assets — Other than goodwill, our long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. If the carrying amount of the asset exceeds the expected undiscounted future cash flows generated by the asset, the asset is written down to its estimated fair value and an impairment loss is recognized in our consolidated statements of comprehensive income.

Goodwill and Other Intangible Assets — Goodwill is not subject to amortization; however, goodwill is required to be assessed for impairment, and a resulting write-down, if any, is to be reflected in operating expense. We have goodwill recorded relating to our acquisitions of ITCTransmission and METC, and ITC Midwest’s acquisition of the IP&L transmission assets. Goodwill is reviewed at the reporting unit level at least annually for impairment and whenever facts or circumstances indicate that the value of goodwill may be impaired. Our reporting units are ITCTransmission, METC and ITC Midwest as each entity represents an individual operating segment to which goodwill has been assigned. At December 31, 2021 and 2020, we had goodwill balances recorded at ITCTransmission, METC and ITC Midwest of $173 million, $454 million and $323 million, respectively.

In order to perform an impairment analysis, we have the option of performing a qualitative assessment to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, in which case no further testing is required. If an entity bypasses the qualitative assessment or performs a qualitative assessment but determines that it is more likely than not that a reporting unit’s fair value is less than its carrying amount, a quantitative, fair value-based test is performed to assess and measure goodwill impairment, if any. If a quantitative assessment is performed, we determine the fair value of our reporting units using valuation techniques based on discounted future cash flows under various scenarios and consider estimates of market-based valuation multiples for companies within the peer group of our reporting units.

We completed our annual goodwill impairment test for our reporting units as of October 1, 2021 and determined that no impairment exists. There were no events subsequent to October 1, 2021 that indicated impairment of our goodwill. Our intangible assets other than goodwill have finite lives and are amortized over their useful lives. Refer to Note 8 for additional discussion on our intangible assets.

Deferred Financing Fees and Discount or Premium on Debt — Costs related to the issuance of long-term debt are generally recorded as a direct deduction from the carrying amount of the related debt and

Table of Contents

amortized over the life of the debt. Debt issuance costs incurred prior to the associated debt funding are presented as an asset. Unamortized debt issuance costs associated with the revolving credit agreements, commercial paper and other similar arrangements are presented as an asset (regardless of whether there are any amounts outstanding under those credit facilities) and amortized over the life of the particular arrangement. The debt discount or premium related to the issuance of long-term debt is recorded to long-term debt and amortized over the life of the debt. We recorded $5 million during the years ended December 31, 2021, 2020 and 2019 to interest expense for the amortization of deferred financing fees and debt discounts.

Asset Retirement Obligations — A conditional asset retirement obligation is a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within our control. We have identified conditional asset retirement obligations primarily associated with the removal of equipment containing PCBs and asbestos. We record a liability at fair value for a legal asset retirement obligation in the period in which it is incurred. When a new legal obligation is recorded, we capitalize the costs of the liability by increasing the carrying amount of the related long-lived asset. We accrete the liability to its present value each period and depreciate the capitalized cost over the useful life of the related asset. At the end of the asset’s useful life, we settle the obligation for its recorded amount. We recognize regulatory assets for the timing differences between the incurred costs to settle our legal asset retirement obligations and the recognition of such obligations as applicable for our Regulated Operating Subsidiaries. Our asset retirement obligations as of December 31, 2021 and 2020 of $6 million are included in other liabilities.

Derivatives and Hedging — We may use derivative financial instruments, including interest rate swap contracts, to manage our exposure to fluctuations in interest rates. For derivative instruments that have been designated and qualify as cash flow hedges of the exposure to variability in expected future cash flows, the unrealized gain or loss on the derivative is initially reported, net of tax, as a component of other comprehensive income (loss) and reclassified to the consolidated statements of comprehensive income when the underlying hedged transaction affects net income. Cash flows related to interest rate swaps that are designated in hedging relationships are generally classified on the consolidated statements of cash flows within cash flows from financing activities. The fair values of derivatives are recognized as current or long-term assets and liabilities depending on the timing of settlements and resulting cash flows. Refer to Note 9 for additional discussion regarding derivative instruments.

Contingent Obligations — We are subject to a number of federal and state laws and regulations, as well as other factors and conditions that potentially subject us to environmental, litigation, income tax and other contingencies. We periodically evaluate our exposure to such contingencies and record liabilities for those matters where a loss is considered probable and reasonably estimable. We reverse the liabilities recorded for those matters when a loss is no longer considered probable or the liabilities are otherwise settled. Our liabilities exclude any estimates for legal costs not yet incurred associated with handling these matters, which could be material. The adequacy of liabilities recorded can be significantly affected by external events or conditions that can be unpredictable; thus, the ultimate outcome of such matters could materially affect our consolidated financial statements.

Revenues — Substantially all of our revenue from contracts with customers is generated from providing transmission services to customers based on tariff rates, as approved by the FERC. Revenues from the transmission of electricity are recognized as services are provided based on our FERC-approved cost-based Formula Rates. We record a reserve for revenue subject to refund when such refund is probable and can be reasonably estimated. This reserve is recorded as a reduction to operating revenues.

The cost-based Formula Rates at our Regulated Operating Subsidiaries include a true-up mechanism that compares the actual revenue requirements of our Regulated Operating Subsidiaries to their billed revenues for each year to determine any over- or under-collection of revenue requirements and we record a revenue deferral or accrual for the difference. The true-up mechanisms under our Formula Rates are considered alternative revenue programs of rate-regulated utilities. Operating revenues arising from these alternative revenue programs are presented on our consolidated statements of comprehensive income in the line “Formula Rate true-up”, which is separate from the reporting of our tariff revenues, which are presented in the line “Transmission and other services.” Only the initial origination of our alternative

Table of Contents

revenue program revenue is reported in the Formula Rate true-up line on our consolidated statements of comprehensive income. When those amounts are subsequently included in the price of utility service and billed or refunded to customers, we account for that event as the recovery or settlement of the associated regulatory asset or regulatory liability, respectively. Refer to Note 5 under “Cost-Based Formula Rates with True-Up Mechanism” and Note 3 under “Formula Rate True-Up” for a discussion of our revenue accounting under our cost-based Formula Rates.

Share-Based Payment and Employee Share Purchase Plan — Under our long-term incentive plans, we grant long-term incentive awards consisting of PBUs and SBUs. Generally, each PBU and SBU granted is valued based on one share of Fortis common stock traded on the Toronto Stock Exchange, converted to U.S. dollars and settled only in cash. However, certain SBUs granted to the executives may settle in cash, 100% Fortis common stock, or 50% cash and 50% Fortis common stock depending on executives’ settlement elections and whether certain share ownership requirements are met. The awards are classified as liability awards and vest on the date specified in the applicable grant agreements, provided the service and performance criteria, as applicable, are satisfied. The PBUs and SBUs earn dividend equivalents which are also re-measured and settled consistent with the target award at the end of the vesting period.

Compensation cost is recognized over the expected vesting period and remeasured each reporting period based on Fortis’ stock price. The PBUs are also remeasured each reporting period based on the applicable market and performance conditions in the awards. Compensation cost is adjusted for forfeitures in the period in which they occur and the final measure of compensation cost for the awards is based on the cash settlement amount.

Refer to Note 14 for additional discussion of the plans.

Comprehensive Income (Loss) — Comprehensive income (loss) is the change in stockholder’s equity during a period arising from transactions and events from non-owner sources, including net income and any gain or loss arising from our interest rate swaps.

Income Taxes — Deferred income taxes are recognized for the expected future tax consequences of events that have been recognized in the consolidated financial statements or tax returns. Deferred income tax assets and liabilities are determined based on the differences between the financial statements and the tax bases of various assets and liabilities, using the tax rates expected to be in effect for the year in which the differences are expected to reverse, and classified as non-current in our consolidated statements of financial position.

The accounting standards for uncertainty in income taxes prescribe a recognition threshold and a measurement attribute for tax positions taken, or expected to be taken, in a tax return that may not be sustainable. As of December 31, 2021, we have not recognized any uncertain income tax positions.

We file our federal and Michigan income tax returns as part of the FortisUS consolidated tax returns and we are a party to an intercompany tax sharing agreement that establishes the method for determining tax liabilities that are due and allocating tax attributes that are utilized on the consolidated income tax returns. We continue to file with various other state and city jurisdictions where we have a separate return filing obligation. Our prior consolidated federal tax returns are no longer subject to U.S. federal tax examinations for tax years 2017 and earlier. State and city jurisdictions that remain subject to examination range from tax years 2017 to 2020. In the event we are assessed interest or penalties by any income tax jurisdictions, interest and penalties would be recorded as interest expense and other expense, respectively, in our consolidated statements of comprehensive income. Refer to Notes 6 and 10 for additional discussion on income taxes.

3. REVENUE

Our total revenues are comprised of revenues which arise from three classifications including transmission services, other services, and Formula Rate true-up. As other services revenue is immaterial, it is presented in combination with transmission services on the consolidated statements of comprehensive income.

Table of Contents

Transmission Services

Through our Regulated Operating Subsidiaries, we generate nearly all our revenue from providing electric transmission services over our transmission systems. As independent transmission companies, our transmission services are provided and revenues are received based on our tariffs, as approved by the FERC. The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items.

We recognize revenue for transmission services over time as transmission services are provided to customers (generally using an output measure of progress based on transmission load delivered). Customers simultaneously receive and consume the benefits provided by the Regulated Operating Subsidiaries’ services. We recognize revenue in the amount to which we have the right to invoice because we have a right to consideration in an amount that corresponds directly with the value to the customer of performance completed to date. As billing agents, MISO and SPP independently bill our customers on a monthly basis and collects fees for the use of our transmission systems. No component of the transaction price is allocated to unsatisfied performance obligations.

Transmission service revenue includes an estimate for unbilled revenues from service that has been provided but not billed by the end of an accounting period. Unbilled revenues are dependent upon a number of factors that require management’s judgment including estimates of transmission network load (for the MISO Regulated Operating Subsidiaries) and preliminary information provided by billing agents. Due to the seasonal fluctuations of actual load, the unbilled revenue amount generally increases during the spring and summer and decreases during the fall and winter. See Note 4 for information on changes in unbilled accounts receivable.

Other Services

Other services revenue consists of rental revenues, easement revenues, and amounts from providing ancillary services. A portion of other services revenue is treated as a revenue credit and reduces gross revenue requirement when calculating net revenue requirement under our Formula Rates. Total other services revenue was $6 million, $5 million and $7 million for the years ended December 31, 2021, 2020 and 2019, respectively.

Formula Rate True-Up

The true-up mechanism under our Formula Rates is considered an alternative revenue program of a rate-regulated utility given it permits our Regulated Operating Subsidiaries to adjust future rates in response to past activities or completed events in order to collect our actual revenue requirements under our Formula Rates. In accordance with our accounting policy, only the current year origination of the true-up is reported as a Formula Rate true-up. See “Cost-Based Formula Rates with True-Up Mechanism” in Note 5 for more information on our Formula Rates.

4. ACCOUNTS RECEIVABLE

The following table presents the components of accounts receivable on the consolidated statements of financial position:


	December 31,
(In millions of USD)	2021		2020		2019		2018
Trade accounts receivable	$	3	$	2	$	2	$	2
Unbilled accounts receivable	116		102		102		92

Other	9		10		13		8
Total accounts receivable	$	128	$	114	$	117	$	102

Table of Contents

5. REGULATORY MATTERS

Cost-Based Formula Rates with True-Up Mechanism

The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items. The formula used to derive the rates does not require further action or FERC filings each year, although the formula inputs remain subject to legal challenge at the FERC. Our Regulated Operating Subsidiaries will continue to use the formula to calculate their respective annual revenue requirements unless the FERC determines the resulting rates to be unjust and unreasonable and another mechanism is determined by the FERC to be just and reasonable. See “Rate of Return on Equity Complaints” in Note 17 for detail on ROE matters for our MISO Regulated Operating Subsidiaries and "Incentive Adders for Transmission Rates" discussed herein.

The cost-based Formula Rates at our Regulated Operating Subsidiaries include a true-up mechanism that compares the actual revenue requirements of our Regulated Operating Subsidiaries to their billed revenues for each year to determine any over- or under-collection of revenue requirements. Revenue is recognized for services provided during each reporting period based on actual revenue requirements calculated using the formula. Our Regulated Operating Subsidiaries accrue or defer revenues to the extent that the actual revenue requirement for the reporting period is higher or lower, respectively, than the amounts billed relating to that reporting period. The amount of accrued or deferred revenues is reflected in future revenue requirements and thus flows through to customer bills within two years under the provisions of our Formula Rates.

The net changes in regulatory assets and liabilities associated with our Regulated Operating Subsidiaries’ Formula Rate revenue accruals and deferrals, including accrued interest, were as follows during the year ended December 31, 2021:


(In millions of USD)	Total
Net regulatory assets as of December 31, 2020	$	50
Net collection of 2019 revenue deferrals and accruals, including accrued interest	(43)
Net revenue deferral for the year ended December 31, 2021	(9)

Net regulatory liabilities as of December 31, 2021	$	(2)

Regulatory assets and liabilities associated with our Regulated Operating Subsidiaries’ Formula Rate revenue accruals and deferrals, including accrued interest, are recorded in the consolidated statements of financial position as follows:


	December 31,
(In millions of USD)	2021		2020
Current regulatory assets	$	20	$	44
Non-current regulatory assets	10		19
Current regulatory liabilities	(13)		(1)
Non-current regulatory liabilities	(19)		(12)
Net regulatory (liabilities) assets	$	(2)	$	50

Incentive Adders for Transmission Rates

The FERC has authorized the use of ROE incentives, or adders, that can be applied to the rates of TOs when certain conditions are met. Our MISO Regulated Operating Subsidiaries and ITC Great Plains utilize ROE adders related to independent transmission ownership and RTO participation. On March 20, 2020, the FERC issued a NOPR and on April 15, 2021, the FERC issued a supplemental NOPR that was a proposal to update the transmission incentives policy. As of December 31, 2021, no final determination had been made on these NOPRs and we cannot predict whether this will have a material impact on us.

Table of Contents

MISO Regulated Operating Subsidiaries

On April 20, 2018, Consumers Energy, IP&L, Midwest Municipal Transmission Group, Missouri River Energy Services, Southern Minnesota Municipal Power Agency and WPPI Energy filed a complaint with the FERC under section 206 of the FPA, challenging the adders for independent transmission ownership that are included in transmission rates charged by the MISO Regulated Operating Subsidiaries. At the time of the complaint, the adders for independent transmission ownership allowed up to 50 basis points or 100 basis points to be added to the MISO Regulated Operating Subsidiaries’ authorized ROE, subject to any ROE cap established by the FERC. On October 18, 2018, the FERC issued an order granting the complaint in part, setting revised adders for independent transmission ownership for each of the MISO Regulated Operating Subsidiaries to 25 basis points, and requiring the MISO Regulated Operating Subsidiaries to include the revised adders, effective April 20, 2018, in their Formula Rates. On September 11, 2019, the MISO Regulated Operating Subsidiaries filed an appeal of the FERC’s order in the D.C. Circuit Court and on February 19, 2021, the appeal was denied. As a result, the FERC’s October 18, 2018 order was upheld without further impact on our financial condition, consolidated results of operations or cash flows.

For each of the years ended December 31, 2021, 2020 and 2019, the authorized incentive adders for the MISO Regulated Operating Subsidiaries included a 25 basis point adder for independent transmission ownership and a 50 basis point adder for RTO participation. See Note 17 for information regarding the MISO ROE Complaints and the associated impact to the base ROE of our MISO Regulated Operating Subsidiaries.

ITC Great Plains

On June 11, 2019, KCC filed a complaint with the FERC under section 206 of the FPA, challenging the adder for independent transmission ownership that is included in the transmission rate charged by ITC Great Plains. The adder for independent transmission ownership allowed up to 100 basis points to be added to the ITC Great Plains authorized ROE, subject to any ROE cap established by the FERC. On July 16, 2020, the FERC issued an order granting the complaint, setting the revised adder for independent transmission ownership for ITC Great Plains to 25 basis points, and requiring ITC Great Plains to include the revised adder, effective June 11, 2019, in their Formula Rate. In addition, the order directed ITC Great Plains to provide refunds, with interest, for the period from June 11, 2019 through July 16, 2020. During the fourth quarter of 2020, refunds of $4 million were made to settle the refund liability. ITC Great Plains filed appeals in the D.C. Circuit Court for the various FERC orders in the proceedings for ITC Great Plains. On March 4, 2021, these appeals were dismissed following a motion for voluntary dismissal by ITC Great Plains in response to the denial of the appeal of the FERC’s order to reduce the adder for independent transmission ownership for each of the MISO Regulated Operating Subsidiaries. The dismissal of the appeals did not result in additional impacts to our consolidated results of operations, cash flows or financial condition.

Prior to the issuance of the FERC order on July 16, 2020, the authorized ROE used by ITC Great Plains was 12.16% and was composed of a base ROE of 10.66% with a 100 basis point adder for independent transmission ownership and a 50 basis point adder for RTO participation. Based on the July 16, 2020 order, the authorized ROE used by ITC Great Plains was revised to 11.41% and is currently composed of a base ROE of 10.66% with a 25 basis point adder for independent transmission ownership and a 50 basis point adder for RTO participation.

Rate of Return on Equity Complaints

See “Rate of Return on Equity Complaints” in Note 17 for a discussion of the MISO ROE Complaints.

Table of Contents

6. REGULATORY ASSETS AND LIABILITIES

Regulatory Assets

The following table summarizes the regulatory asset balances:


	December 31,
(In millions of USD)	2021		2020
Regulatory Assets:
Current:
Revenue accruals (including accrued interest of less than $1 and $2 as of December 31, 2021 and 2020, respectively) (a)	$	20	$	44
Amounts recoverable related to the Initial Complaint (including accrued interest of less than $1 and $2 as of December 31, 2021 and 2020, respectively) (b)	1		8
Total current	21		52
Non-current:
Revenue accruals (including accrued interest of less than $1 as of December 31, 2021 and 2020) (a)	10		19
ITCTransmission ADIT deferral (net of accumulated amortization of $57 and $54 as of December 31, 2021 and 2020, respectively)	4		7
METC ADIT deferral (net of accumulated amortization of $35 and $33 as of December 31, 2021 and 2020, respectively)	8		10
METC regulatory deferrals (net of accumulated amortization of $12 and $11 as of December 31, 2021 and 2020, respectively)	3		4
Income taxes recoverable related to AFUDC equity	114		106
ITC Great Plains start-up, development and pre-construction (net of accumulated amortization of $9 and $7 as of December 31, 2021 and 2020, respectively)	4		6
Pensions and postretirement	20		30
Income taxes recoverable related to implementation of the Michigan Corporate Income Tax	6		6
Accrued asset removal costs	21		24

Total non-current	190		212
Total	$	211	$	264

____________________________

(a)Refer to discussion of revenue accruals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries do not earn a return on the balance of these regulatory assets, but do accrue interest carrying costs, which are subject to rate recovery along with the principal amount of the revenue accrual.

(b)Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”

ITCTransmission ADIT Deferral

The carrying amount of the ITCTransmission ADIT Deferral is the remaining unamortized balance of the portion of ITCTransmission’s purchase price in excess of fair value of net assets acquired from DTE Energy approved for inclusion in future rates by the FERC. The original amount recorded for this regulatory asset of $61 million is recognized in rates and amortized on a straight-line basis over 20 years beginning March 1, 2003. ITCTransmission includes the remaining unamortized balance of this regulatory asset in rate base. ITCTransmission recorded amortization expense of $3 million annually during 2021, 2020 and 2019, which is included in depreciation and amortization in our consolidated statements of comprehensive income and recovered through ITCTransmission’s cost-based Formula Rate template.

METC ADIT Deferral

The carrying amount of the METC ADIT Deferral is the remaining unamortized balance of the portion of METC’s purchase price in excess of the fair value of net assets acquired at the time MTH acquired METC from

Table of Contents

Consumers Energy approved for inclusion in future rates by the FERC. The original amount approved for recovery recorded for this regulatory asset of $43 million is recognized in rates and amortized on a straight-line basis over 18 years beginning January 1, 2007. METC includes the remaining unamortized balance of this regulatory asset in rate base. METC recorded amortization expense of $2 million annually during 2021, 2020 and 2019, which is included in depreciation and amortization in our consolidated statements of comprehensive income and recovered through METC’s cost-based Formula Rate template.

METC Regulatory Deferrals

The carrying amount of the METC Regulatory Deferrals is the amount METC has deferred, as a regulatory asset, of depreciation and related interest expense associated with new transmission assets placed in service from January 1, 2001 through December 31, 2005 that were included on METC’s balance sheet at the time MTH acquired METC from Consumers Energy. The original amount recorded for this regulatory asset of $15 million, and approved for inclusion in future rates by the FERC, is recognized in rates and amortized over 20 years beginning January 1, 2007. METC includes the remaining unamortized balance of this regulatory asset in rate base. METC recorded amortization expense of $1 million annually during 2021, 2020 and 2019, which is included in depreciation and amortization in our consolidated statements of comprehensive income and recovered through METC’s cost-based Formula Rate template.

Income Taxes Recoverable Related to AFUDC Equity

Accounting standards for income taxes provide that a regulatory asset be recorded if it is probable that a future increase in taxes payable, relating to the book depreciation of AFUDC equity that has been capitalized to property, plant and equipment, will be recovered from customers through future rates. The regulatory asset for the tax effects of AFUDC equity is recovered over the life of the underlying book asset in a manner that is consistent with the depreciation of the AFUDC equity that has been capitalized to property, plant and equipment. This regulatory asset and the related offsetting deferred income tax liabilities do not affect rate base.

ITC Great Plains Start-Up, Development and Pre-Construction

In 2013, ITC Great Plains made a filing with the FERC, under Section 205 of the FPA, to recover start-up, development and pre-construction expenses in future rates. These expenses included certain costs incurred by ITC Great Plains for two regional cost sharing projects in Kansas prior to construction. In March 2015, the FERC accepted ITC Great Plains’ request to commence amortization of the authorized regulatory assets, subject to refund. In December 2015, the FERC issued an order accepting an uncontested settlement agreement establishing the amounts of the regulatory assets and associated carrying charges to be recovered. ITC Great Plains includes the unamortized balance of these regulatory assets in rate base and amortizes them over a 10-year period, that began in the second quarter of 2015. The amortization expense is recorded to general and administrative expenses in our consolidated statements of comprehensive income and is recovered through ITC Great Plains’ cost-based Formula Rate.

Pensions and Postretirement

Accounting standards for defined benefit pension and other postretirement plans for rate-regulated entities allow for amounts that otherwise would have been charged to AOCI to be recorded as a regulatory asset. As the unrecognized amounts recorded to this regulatory asset are recognized, expenses will be recovered from customers in future rates under our cost-based Formula Rates. This regulatory asset is not included when determining rate base.

Income Taxes Recoverable Related to Implementation of the Michigan Corporate Income Tax

Under the Michigan Corporate Income Tax, we are taxed at a rate of 6.0% on federal taxable income attributable to our operations in the state of Michigan, subject to certain adjustments. In 2011, due to certain Michigan tax law changes we were required to establish new deferred income tax balances under the Michigan Corporate Income Tax, and the net result was incremental deferred state income tax liabilities at both ITCTransmission and METC. Under our cost-based Formula Rate, the future tax receivable as a result of the tax law change has resulted in the recognition of a regulatory asset, which will be collected from customers for the 23-year period and the 32-year period for ITCTransmission and METC, respectively, beginning in 2016. ITCTransmission and METC include this regulatory asset within deferred taxes for rate-making purposes when determining rate base.

Table of Contents

Accrued Asset Removal Costs

The carrying amount of the accrued asset removal costs represents the difference between incurred costs to remove property, plant and equipment and the estimated removal costs included and collected in rates. The portion of depreciation expense included in our depreciation rates related to asset removal costs reduces this regulatory asset and removal costs incurred are added to this regulatory asset. In addition, this regulatory asset has also been adjusted for timing differences between incurred costs to settle legal asset retirement obligations and the recognition of such obligations under the standards set forth by the FASB. Our Regulated Operating Subsidiaries include this item, excluding the cost component related to the recognition of our legal asset retirement obligations under the standards set forth by the FASB, as a reduction to accumulated depreciation for rate-making purposes, when determining rate base.

Regulatory Liabilities

The following table summarizes the regulatory liability balances:


	December 31,
(In millions of USD)	2021		2020
Regulatory Liabilities:
Current:
Revenue deferrals (including accrued interest of $1 and less than $1 as of December 31, 2021 and 2020, respectively) (a)	$	13	$	1
Refund related to the Initial Complaint (including accrued interest of $1 as of December 31, 2020) (b)	—		13
Other	1		—
Total current	14		14
Non-current:
Revenue deferrals (including accrued interest of less than $1 as of December 31, 2021 and 2020) (a)	19		12
Accrued asset removal costs	70		73
Excess state income tax deductions	3		3
Income taxes refundable related to implementation of the TCJA	495		507
Pensions and postretirement	31		16
Other	1		1
Total non-current	619		612
Total	$	633	$	626

____________________________

(a)Refer to discussion of revenue deferrals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries accrue interest on the true-up amounts which will be refunded through rates along with the principal amount of revenue deferrals in future periods.

(b)Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”

Accrued Asset Removal Costs

Excess State Income Tax Deductions

Our Regulated Operating Subsidiaries have taken state income tax deductions associated with property additions that exceed the tax basis of property, and the unrealized income tax benefits resulting from these

Table of Contents

deductions are expected to be refunded to customers through future rates when the income tax benefits are realized. This regulatory liability is included within deferred taxes for rate-making purposes when determining rate base.

Income Taxes Refundable Related to Implementation of the TCJA

Under the TCJA, we were required to revalue our deferred tax assets and liabilities at the new federal corporate income tax rate as of the date of the enactment of the TCJA, which resulted in lower net deferred tax liabilities and the establishment of a net regulatory liability for excess deferred taxes at our Regulated Operating Subsidiaries. For our Regulated Operating Subsidiaries, our deferred taxes are subject to a normalization method of accounting for the excess tax reserves resulting from the change in the federal statutory tax rate which requires the use of either the ARAM or the alternative method, RSGM, for assets related to public utility property. Prior to 2021, the ARAM method was used for the return of excess deferred taxes to customers associated with public utility property. Beginning in 2021, we began using RSGM for the return of all remaining categories of excess deferred taxes to customers, pursuant to the interpretation of recent released revenue procedures and private letter rulings. During the years ended December 31, 2021 and 2020, we recorded $8 million and $2 million, respectively, of amortization related to the excess deferred taxes under RSGM and ARAM. The net regulatory liability is included within deferred taxes for rate-making purposes when determining rate base.

Pensions and Postretirement

Accounting standards for defined benefit pension and other postretirement plans for rate-regulated entities allow for amounts that otherwise would have been credited to AOCI to be recorded as a regulatory liability. As the unrecognized amounts recorded to this regulatory liability are recognized, amounts will be returned to customers in future rates under our cost-based Formula Rates. This regulatory liability is not included when determining rate base.

7. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment — net consisted of the following:


	December 31,
(In millions of USD)	2021		2020
Property, plant and equipment
Regulated Operating Subsidiaries:
Property, plant and equipment in service	$	11,434	$	10,661
Construction work in progress	529		523
Capital equipment inventory	96		103
Other	87		81
ITC Holdings and other	14		14
Total	12,160		11,382
Less: Accumulated depreciation and amortization	(2,199)		(2,055)
Property, plant and equipment, net	$	9,961	$	9,327

Additions to property, plant and equipment in-service and construction work in progress during 2021 and 2020 were due primarily to projects to upgrade or replace existing transmission plant and update grid security to improve the reliability of our transmission systems as well as transmission infrastructure to support generator interconnections and investments that provide regional benefits such as our MVPs. Additionally, in 2020, we made asset acquisitions which added to our in-service property, plant and equipment.

Table of Contents

8. INTANGIBLE ASSETS

METC has recorded intangible assets with finite lives derived from the portion of regulatory assets recorded on METC’s historical FERC financial statements that were not recorded on METC’s historical GAAP financial statements. These intangible assets are associated with the METC Regulatory Deferrals and the METC ADIT Deferral as described in Note 6. The carrying amounts of the intangible asset for the METC Regulatory Deferrals and the METC ADIT Deferral were $10 million and $3 million (net of accumulated amortization of $30 million and $16 million), respectively, as of December 31, 2021, and $12 million and $4 million (net of accumulated amortization of $28 million and $15 million), respectively, as of December 31, 2020. The amortization periods for the METC Regulatory Deferrals and the METC ADIT Deferral are 20 and 18 years, respectively, beginning January 1, 2007. METC earns an equity return on the remaining unamortized balance of both intangible assets and recovers the amortization expense through METC’s cost-based Formula Rate template.

ITC Great Plains has recorded intangible assets for payments made by and obligations of ITC Great Plains to certain TOs to acquire rights, which are required under the SPP tariff to designate ITC Great Plains to build, own and operate projects within the SPP region, including three regional cost sharing projects in Kansas. The carrying amount of these intangible assets was $13 million (net of accumulated amortization of $3 million) as of both December 31, 2021 and 2020. The amortization period for these intangible assets is 50 years, beginning March 31, 2011.

We recognized $3 million, $4 million, and $3 million of amortization expense for our intangible assets during the years ended December 31, 2021, 2020 and 2019, respectively, recorded in depreciation and amortization on the consolidated statements of comprehensive income. We expect the annual amortization of our intangible assets that have been recorded as of December 31, 2021 to be as follows:


(In millions of USD)
2022	$	3
2023	4
2024	3
2025	2
2026	2
2027 and thereafter	12
Total	$	26

Table of Contents

9. DEBT

Amounts of outstanding debt were classified as debt maturing within one year and long-term debt in the consolidated statements of financial position as follows:


	December 31,
(In millions of USD)	2021		2020
ITC Holdings 6.375% Senior Notes, due September 30, 2036	$	200	$	200
ITC Holdings 4.05% Senior Notes, due July 1, 2023	250		250
ITC Holdings 3.65% Senior Notes, due June 15, 2024	400		400
ITC Holdings 5.30% Senior Notes, due July 1, 2043	300		300
ITC Holdings 3.25% Notes, due June 30, 2026	400		400
ITC Holdings 2.70% Senior Notes, due November 15, 2022 (a)	500		500
ITC Holdings 3.35% Senior Notes, due November 15, 2027	500		500
ITC Holdings 2.95% Senior Notes, due May 14, 2030	700		700
ITC Holdings Revolving Credit Agreement, due October 18, 2024	39		37
ITC Holdings Commercial Paper Program (a)	155		67
ITCTransmission 6.125% First Mortgage Bonds, Series C, due March 31, 2036	100		100
ITCTransmission 4.625% First Mortgage Bonds, Series E, due August 15, 2043	285		285
ITCTransmission 4.27% First Mortgage Bonds, Series F, due June 10, 2044	100		100
ITCTransmission 4.00% First Mortgage Bonds, Series G, due March 30, 2053	225		225
ITCTransmission 3.30% First Mortgage Bonds, Series H, due August 28, 2049	75		75
ITCTransmission Revolving Credit Agreement, due October 18, 2024	88		33
METC 5.64% Senior Secured Notes, due May 6, 2040	50		50
METC 3.98% Senior Secured Notes, due October 26, 2042	75		75
METC 4.19% Senior Secured Notes, due December 15, 2044	150		150
METC 3.90% Senior Secured Notes, due April 26, 2046	200		200
METC 4.55% Senior Secured Notes, due January 15, 2049	50		50
METC 4.65% Senior Secured Notes, due July 10, 2049	50		50
METC 2.90% Senior Secured Notes, Series A, due August 3, 2051	75		—
METC 3.02% Senior Secured Notes, due October 14, 2055	150		150
METC Revolving Credit Agreement, due October 18, 2024	30		20
ITC Midwest 6.15% First Mortgage Bonds, Series A, due January 31, 2038	175		175
ITC Midwest 4.60% First Mortgage Bonds, Series D, due December 17, 2024	75		75
ITC Midwest 3.50% First Mortgage Bonds, Series E, due January 19, 2027	100		100
ITC Midwest 4.09% First Mortgage Bonds, Series F, due April 30, 2043	100		100
ITC Midwest 3.83% First Mortgage Bonds, Series G, due April 7, 2055	225		225
ITC Midwest 4.16% First Mortgage Bonds, Series H, due April 18, 2047	200		200
ITC Midwest 4.32% First Mortgage Bonds, Series I, due November 1, 2051	175		175
ITC Midwest 3.13% First Mortgage Bonds, Series J, due July 15, 2051	180		180
ITC Midwest Revolving Credit Agreement, due October 18, 2024	139		75
ITC Great Plains 4.16% First Mortgage Bonds, Series A, due November 26, 2044	150		150
ITC Great Plains Revolving Credit Agreement, due October 18, 2024	33		33
Other	3		—
Total principal	6,702		6,405
Unamortized deferred financing fees and discount	(39)		(43)
Total debt	$	6,663	$	6,362

____________________________

(a)As of December 31, 2021 and 2020 there was $654 million and $67 million, respectively, net of unamortized deferred financing fees and discount, of debt included within debt maturing within one year in the consolidated statements of financial position.

Table of Contents

The annual maturities of debt as of December 31, 2021 are as follows:


(In millions of USD)
2022	$	655
2023	250
2024	804
2025	—
2026	400
2027 and thereafter	4,593
Total	$	6,702

ITC Holdings

Senior Unsecured Notes

On May 14, 2020, ITC Holdings completed the private offering of $700 million aggregate principal amount of unsecured 2.95% Senior Notes, due May 14, 2030. The net proceeds from this offering were used to repay the amount outstanding under ITC Holdings’ $400 million term loan credit agreement, to repay $122 million under ITC Holdings’ revolving credit agreement, and to repay $92 million under ITC Holdings’ commercial paper program, with remaining proceeds to be used for general corporate purposes. These Senior Notes were issued under ITC Holdings’ indenture, dated April 18, 2013.

Commercial Paper Program

ITC Holdings has an ongoing commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate amount not to exceed $400 million outstanding at any one time. As of December 31, 2021, ITC Holdings had $155 million of commercial paper, net of discount, issued and outstanding under the program, with a weighted-average interest rate of 0.2% and weighted average remaining days to maturity of 32 days. The amount outstanding as of December 31, 2021 was classified as debt maturing within one year in the consolidated statements of financial position. As of December 31, 2020, ITC Holdings had $67 million of commercial paper issued and outstanding.

ITCTransmission

First Mortgage Bonds

On January 14, 2022, ITCTransmission issued $130 million of aggregate principal amount of 2.93% First Mortgage Bonds, Series J due January 14, 2052. The proceeds were used to repay existing indebtedness under the revolving credit agreement and intercompany loan agreement and will also be used to partially fund capital expenditures and for general corporate purposes. ITCTransmission also issued an additional $20 million of aggregate principal amount of 2.93% First Mortgage Bonds, Series I due January 14, 2052, the proceeds of which are expected to fund or refinance a portfolio of eligible renewable energy projects based on the green bond framework established by ITC Holdings. All of ITCTransmission’s First Mortgage Bonds are issued under its First Mortgage and Deed of Trust and secured by a first mortgage lien on substantially all of its real property and tangible personal property.

METC

Senior Secured Notes

On August 3, 2021, METC issued $75 million of 2.90% Series A Senior Secured Notes, due August 3, 2051. The proceeds from the Series A Senior Secured Notes are expected to fund or refinance a portfolio of eligible renewable energy projects based on the green bond framework established by ITC Holdings. METC has an additional $75 million delayed draw of 3.05% Series B Senior Secured Notes in May 2022 with a due date 30 years from the date of issuance. The proceeds from the Series B Senior Secured Notes are expected to be used to repay borrowings under the METC revolving credit agreement, to partially fund capital expenditures and for general corporate purposes. All of METC’s Senior Secured Notes are issued under its first mortgage indenture and secured by a first mortgage lien on substantially all of its real property and tangible personal property.

Table of Contents

On October 14, 2020, METC issued $150 million of 3.02% Senior Secured Notes, due October 14, 2055. The proceeds from the issuance were used to repay amounts outstanding under METC’s term loan credit agreement, to repay borrowings under its revolving credit agreement, to partially fund capital expenditures and for general corporate purposes.

Term Loan Credit Agreement

On January 23, 2020, METC entered into an unsecured, unguaranteed term loan credit agreement, due January 23, 2021, under which METC borrowed the maximum of $75 million available under the agreement. The proceeds were used for general corporate purposes, primarily the repayment of borrowings under the METC revolving credit agreement. This borrowing was repaid in full on October 14, 2020 from the proceeds of the METC Senior Secured Notes issued on October 14, 2020. The weighted-average interest rate throughout the life of the loan was 1.08%.

ITC Midwest

First Mortgage Bonds

On July 15, 2020, ITC Midwest issued an aggregate of $180 million of 3.13% First Mortgage Bonds due July 15, 2051. The proceeds were used to partially repay existing indebtedness under the ITC Midwest revolving credit agreement, partially fund capital expenditures and for general corporate purposes. ITC Midwest’s First Mortgage Bonds were issued under its first mortgage and deed of trust and secured by a first mortgage lien on substantially all of its real property and tangible personal property.

Derivative Instruments and Hedging Activities

We have entered into interest rate swaps to manage interest rate risk associated with the forecasted future issuance of fixed-rate debt at ITC Holdings, the proceeds of which will be used for the expected repayment of the ITC Holdings 2.70% Senior Notes, due November 15, 2022. At December 31, 2021, ITC Holdings had the following interest rate swaps:


Interest Rate Swaps (in millions of USD, except percentages)	Notional Amount		Weighted Average Fixed Rate	Original Term	Effective Date
July 2021 swap	$	45	1.113%	5 years	November 2022
November 2021 swap	45		1.581%	5 years	November 2022
November 2021 swap	45		1.492%	5 years	November 2022
November 2021 swap	45		1.497%	5 years	November 2022
November 2021 swap	50		1.544%	5 years	November 2022
December 2021 swap	50		1.560%	5 years	November 2022
December 2021 swap	50		1.489%	5 years	November 2022
December 2021 swap	45		1.475%	5 years	November 2022
Total	$	375	1.471%

The 5-year term interest rate swaps call for ITC Holdings to receive interest quarterly at a variable rate equal to LIBOR and to pay interest semi-annually at various fixed rates effective for the 5-year period beginning November 15, 2022. The weighted-average interest rate of the interest rate swaps was 1.471% at December 31, 2021. The agreements include a mandatory early termination provision and will be terminated no later than the effective date of the interest rate swaps of November 15, 2022. The interest rate swaps have been determined to be highly effective at offsetting changes in the fair value of the forecasted interest cash flows associated with the debt issuance, resulting from changes in benchmark interest rates from the trade date of the interest rate swaps to the issuance date of the debt obligation.

Table of Contents

The interest rate swaps qualify for cash flow hedge accounting treatment, whereby any gain or loss recognized from the trade date to the effective date is recorded net of tax in AOCI. This amount will be accumulated and amortized as a component of interest expense over the life of the forecasted debt. As of December 31, 2021, the fair value of the derivative instruments of $2 million was recorded in other current assets in the consolidated statements of financial position. The interest rate swaps do not contain credit-risk-related contingent features. Refer to Note 12 for additional fair value information. As of December 31, 2020, ITC Holdings did not have any interest rate swaps outstanding.

Revolving Credit Agreements

On May 17, 2021, ITC Holdings, ITCTransmission, METC, ITC Midwest and ITC Great Plains amended their respective revolving credit agreements each dated October 23, 2017, as previously amended and restated on January 10, 2020. The amendments extend the maturity date of the revolving credit agreements from October 2023 to October 2024. The determination of the applicable interest rates and commitment fee rates in the new agreements is consistent with the previous agreements and remains subject to adjustment based on the borrower’s credit rating. At December 31, 2021, ITC Holdings and certain of its Regulated Operating Subsidiaries had the following unsecured revolving credit facilities available:


(In millions of USD, except percentages)	Total Available Capacity		Outstanding Balance (a)		Unused Capacity			Weighted Average Interest Rate on Outstanding Balance (b)	Commitment Fee Rate (c)
ITC Holdings	$	400	$	39	$	361	(d)	1.4%	0.175	%
ITCTransmission	100		88		12			1.1%	0.10	%
METC	100		30		70			1.1%	0.10	%
ITC Midwest	225		139		86			1.1%	0.10	%
ITC Great Plains	75		33		42			1.1%	0.10	%
Total	$	900	$	329	$	571

____________________________

(a)Included within long-term debt in the consolidated statements of financial position.

(b)Interest charged on borrowings depends on the variable rate structure we elected at the time of each borrowing.

(c)Calculation based on the average daily unused commitments, subject to adjustment based on the borrower’s credit rating.

(d)ITC Holdings’ revolving credit agreement may be used for general corporate purposes, including to repay commercial paper issued pursuant to the commercial paper program described above, if necessary. While outstanding commercial paper does not reduce available capacity under ITC Holdings’ revolving credit agreement, the unused capacity under this agreement adjusted for the commercial paper outstanding was $206 million as of December 31, 2021.

Table of Contents

10. INCOME TAXES

Our effective tax rate varied from the statutory federal income tax rate due to differences between the book and tax treatment of various transactions as follows:


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Income tax expense at 21% federal statutory rate	$	112	$	114	$	118
State income taxes (net of federal benefit)	24		28		22
AFUDC equity	(5)		(4)		(5)
Revaluation of deferred federal income taxes (a)	(9)		(2)		(2)
Valuation allowance	4		—		—
Other, net	1		—		(1)
Total income tax provision	$	127	$	136	$	132

____________________________

(a)Amount for the year ended December 31, 2021 is related to the change in our amortization method associated with excess deferred tax liabilities. Refer to discussion in Note 6 under “Income Taxes Refundable Related to Implementation of the TCJA”.

Components of the income tax provision were as follows:


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Current income tax benefit	$	—	$	(2)	$	(3)
Deferred income tax expense	127		138		135
Total income tax provision	$	127	$	136	$	132

For the years ended December 31, 2021, 2020 and 2019, our effective tax rates were 23.8%, 25.0% and 23.6%, respectively.

Table of Contents

Deferred income tax assets (liabilities) consisted of the following:


	December 31,
(In millions of USD)	2021		2020
Property, plant and equipment	$	(1,274)	$	(1,156)
Federal income tax NOLs and other credits	49		85
METC regulatory deferral (a)	(3)		(4)
Acquisition adjustments — ADIT deferrals (a)	(3)		(5)
Goodwill	(145)		(139)


Regulatory liability gross up — TCJA	131		134
Pension and postretirement liabilities	22		20
State income tax NOLs (net of federal benefit)	57		58

True-up adjustment principal & interest	—		(14)
Valuation allowance	(4)		—
Other, net	9		8
Net deferred tax liabilities	$	(1,161)	$	(1,013)
Gross deferred income tax liabilities	$	(1,434)	$	(1,333)
Gross deferred income tax assets	277		320
Valuation allowance	(4)		—
Net deferred tax liabilities	$	(1,161)	$	(1,013)

____________________________

(a)Described in Note 6

We had federal income tax NOLs as of December 31, 2021. We expect to use our NOLs prior to their expirations starting in 2036. We also had state income tax NOLs as of December 31, 2021. While we expect to utilize the majority of these state NOLs prior to their expiration, we believe that it is more likely than not that the benefit from certain state NOL carryforwards will not be realized. In recognition of this risk, we have provided a valuation allowance of $4 million on the deferred tax assets related to these state NOL carryforwards.

11. RETIREMENT BENEFITS AND ASSETS HELD IN TRUST

Pension and Postretirement Plan Benefits

We have a qualified defined benefit pension plan (“retirement plan”) for eligible employees, comprised of a traditional final average pay plan and a cash balance plan. The traditional final average pay plan is noncontributory, covers select employees, and provides retirement benefits based on years of benefit service, average final compensation, and age at retirement. The cash balance plan is also noncontributory, covers substantially all employees, and provides retirement benefits based on eligible compensation and interest credits. Our funding practice for the retirement plan is generally to fund the annual net pension cost, though we may contribute additional amounts as necessary to meet the minimum funding requirements of the Employee Retirement Income Security Act of 1974, or as we deem appropriate. We made contributions of $4 million to the retirement plan in each of 2021, 2020, and 2019. We expect to contribute $3 million to the retirement plan in 2022.

We also have two supplemental nonqualified, noncontributory, defined benefit pension plans for selected management employees (the “supplemental benefit plans” and collectively with the retirement plan, the “pension plans”). The supplemental benefit plans provide for benefits that supplement those provided by the retirement plan. The obligations under these supplemental benefit plans are included in the pension benefit obligation calculations below. The investments held in trust for the supplemental benefit plans of $54 million and $56 million at December 31, 2021 and 2020, respectively, are not included in the plan asset amounts presented throughout this footnote, but are included in other assets on our consolidated statements of financial position. For the years ended December 31, 2021, 2020, and 2019, we contributed $3 million, $3 million, and $1 million, respectively, to these supplemental benefit plans.

Table of Contents

We provide certain postretirement health care, dental, and life insurance benefits for eligible employees (the “postretirement benefit plan”). We contributed $8 million, $10 million, and $9 million to the postretirement benefit plan in 2021, 2020, and 2019, respectively. We expect to contribute $8 million to the postretirement benefit plan in 2022.

Net periodic benefit costs by component for the pension plans and postretirement benefit plan were as follows:


	Pension Plans						Postretirement Benefit Plan
	Years Ended December 31,						Years Ended December 31,
(In millions of USD)	2021		2020		2019		2021		2020		2019
Service cost	$	9	$	8	$	7	$	11	$	11	$	9
Interest cost	3		4		5		3		4		4
Expected return on plan assets	(6)		(6)		(5)		(6)		(5)		(4)

Amortization of unrecognized loss	1		1		1		—		—		—
Net benefit cost	$	7	$	7	$	8	$	8	$	10	$	9

Table of Contents

The following table reconciles the obligations, assets, and funded status of the pension plans and postretirement benefit plan as well as the presentation of the funded status of the plans in the consolidated statements of financial position:


	Pension Plans				Postretirement Benefit Plan
	December 31,				December 31,
(In millions of USD)	2021		2020		2021		2020
Change in Benefit Obligation:
Beginning projected benefit obligation	$	(162)	$	(141)	$	(122)	$	(113)
Service cost	(9)		(8)		(11)		(11)
Interest cost	(3)		(4)		(3)		(4)
Plan amendments	—		—		—		2
Actuarial net gain/(loss)	5		(16)		8		3
Benefits paid	7		7		1		1
Settlements	2		—		—		—
Ending projected benefit obligation	(160)		(162)		(127)		(122)
Change in Plan Assets:
Beginning plan assets at fair value	107		91		120		95
Actual return on plan assets	10		15		13		16
Employer contributions	4		4		8		10

Benefits paid	(4)		(3)		(1)		(1)
Ending plan assets at fair value	117		107		140		120
Funded status, (underfunded)/overfunded	$	(43)	$	(55)	$	13	$	(2)
Accumulated benefit obligation:
Retirement plan	$	(99)	$	(95)	N/A		N/A
Supplemental benefit plans	(54)		(60)		N/A		N/A
Total accumulated benefit obligation	$	(153)	$	(155)	$	—	$	—
Amounts recorded as:
Funded Status:
Accrued pension and postretirement liabilities	$	(52)	$	(57)	$	—	$	(2)
Other non-current assets	13		6		13		—
Other current liabilities	(4)		(4)		—		—
Total	$	(43)	$	(55)	$	13	$	(2)
Unrecognized Amounts in Non-current Regulatory Assets/(Liabilities):
Net actuarial loss/(gain)	$	19	$	30	$	(29)	$	(14)
Net prior service cost/(credit)	1		—		(2)		(2)
Total	$	20	$	30	$	(31)	$	(16)

The unrecognized amounts that otherwise would have been charged and/or credited to AOCI in accordance with the GAAP guidance on accounting for retirement benefits are recorded as a regulatory asset or regulatory liability on our consolidated statements of financial position, as discussed in Note 6. The amounts recorded as a regulatory asset or regulatory liability represent a net periodic benefit cost or credit to be recognized in our operating income in future periods. Our measurement of the accumulated benefit obligation for the postretirement benefit plan as of December 31, 2021 and 2020 does not reflect the potential receipt of any subsidies under the Medicare Prescription Drug, Improvement and Modernization Act of 2003.

The net actuarial gains for the year ended December 31, 2021 within the change in benefit obligation for both the pension plans and postretirement benefit plan are primarily the result of increases in the discount rates and actual returns on plan assets greater than expected.

Table of Contents

The net actuarial loss for the year ended December 31, 2020 within the change in benefit obligation for the pension plans is primarily the result of decreases in the discount rates. The net actuarial gain for the year ended December 31, 2020 within the change in benefit obligation for the postretirement benefit plan was driven primarily by per capita experience gains as well as other actuarial gains, partially offset by a decrease in the discount rate.

The combined projected benefit obligation and fair value of plan assets for those plans in which the projected benefit obligation is in excess of the fair value of plan assets are as follows:


	Pension Plans
	December 31,
(In millions of USD)	2021		2020
Projected benefit obligation	$	(56)	$	(61)
Fair value of plan assets (a)	—		—

____________________________

(a)The investments held in trust for our supplemental benefit plans are not included in the plan asset amounts presented herein, but are included in other assets on our consolidated statements of financial position.

The combined accumulated benefit obligation and fair value of plan assets for those plans in which the accumulated benefit obligation is in excess of the fair value of plan assets are as follows:


	Pension Plans
	December 31,
(In millions of USD)	2021		2020
Accumulated benefit obligation	$	(54)	$	(60)
Fair value of plan assets (a)	—		—

____________________________

Actuarial assumptions used to determine the benefit obligations for the pension plans and postretirement benefit plan are as follows:


	Pension Plans			Postretirement Benefit Plan
	December 31,			December 31,
	2021	2020	2019	2021	2020	2019
Weighted average discount rate	2.86%	2.49%	3.27%	3.14%	2.94%	3.61%
Weighted average interest crediting rate	4.00%	4.00%	4.00%	N/A	N/A	N/A
Annual rate of salary increases	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%
Health care cost trend rate	N/A	N/A	N/A	5.75%	6.00%	6.25%
Ultimate health care cost trend rate	N/A	N/A	N/A	5.00%	5.00%	5.00%
Year that the ultimate trend rate is reached	N/A	N/A	N/A	2025	2025	2025
Annual rate of increase in dental benefit costs	N/A	N/A	N/A	4.50%	4.50%	4.50%

Table of Contents

Actuarial assumptions used to determine the benefit cost for the pension plans and postretirement benefit plan are as follows:


	Pension Plans			Postretirement Benefit Plan
	Years Ended December 31,			Years Ended December 31,
	2021	2020	2019	2021	2020	2019
Weighted average discount rate — service cost	2.77%	3.47%	4.42%	3.20%	3.80%	4.58%
Weighted average discount rate — interest cost	1.93%	2.91%	3.99%	2.50%	3.30%	4.28%
Weighted average interest crediting rate	4.00%	4.00%	4.50%	N/A	N/A	N/A
Annual rate of salary increases	4.00%	4.00%	4.00%	4.00%	4.00%	4.00%
Health care cost trend rate	N/A	N/A	N/A	6.00%	6.25%	6.50%
Ultimate health care cost trend rate	N/A	N/A	N/A	5.00%	5.00%	5.00%
Year that the ultimate trend rate is reached	N/A	N/A	N/A	2025	2025	2025
Expected long-term rate of return on plan assets	5.70%	6.00%	6.60%	4.30%	4.50%	5.00%

At December 31, 2021, the projected benefit payments for the pension plans and postretirement benefit plan calculated using the same assumptions as those used to calculate the benefit obligations described above are as follows:


(In millions of USD)	Pension Plans		Postretirement Benefit Plan
2022	$	8	$	2
2023	9		2
2024	9		2
2025	10		3
2026	10		3
2027 through 2031	63		22

Investment Objectives and Fair Value Measurement

The general investment objectives of the retirement plan and postretirement benefit plan include maximizing the return within reasonable and prudent levels of risk and controlling administrative and management costs. Investment decisions are made by our retirement benefits board as delegated by our board of directors. Equity investments may include various types of U.S. and international equity securities, such as large-cap, mid-cap, and small-cap stocks. Fixed income investments may include cash and short-term instruments, U.S. Government securities, corporate bonds, mortgages, and other fixed income investments. No investments are prohibited for use in the retirement plan or postretirement benefit plan, including derivatives, but our exposure to derivatives currently is not material. We intend that the long-term capital growth of the retirement and postretirement benefit plans, together with employer contributions, will provide for the payment of the benefit obligations.

As of December 31, 2021 and 2020, the plan assets of the retirement plan and postretirement benefit plan consisted of the following assets by category:


	Target Allocation		Pension Plans				Postretirement Benefit Plan
Asset Category	2021		2021		2020		2021		2020
Fixed income securities	50	%	50	%	50	%	50	%	50	%
Equity securities	50	%	50	%	50	%	50	%	50	%
Total	100	%	100	%	100	%	100	%	100	%

Table of Contents

We determine our expected long-term rate of return on plan assets based on the current and expected target allocations of the retirement plan and postretirement benefit plan investments and considering historical and expected long-term rates of return on comparable fixed income investments and equity investments.

The measurement of fair value is based on a three-tier hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs, such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore, requiring an entity to develop its own assumptions. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. For the years ended December 31, 2021 and 2020, there were no transfers between levels.

For the years ended December 31, 2021 and 2020, the fair value of retirement plan and postretirement benefit plan assets measured on a recurring basis at the Level 1 tier were as follows:


	Pension Plans				Postretirement Benefit Plan
	December 31,				December 31,
(In millions of USD)	2021		2020		2021		2020

Mutual funds — U.S. equity securities	$	47	$	43	$	67	$	57
Mutual funds — international equity securities	12		11		3		3
Mutual funds — fixed income securities	58		53		70		60
Total	$	117	$	107	$	140	$	120

The mutual funds consist primarily of publicly traded mutual funds and are recorded at fair value based on observable trades for identical securities in an active market.

Defined Contribution Plan

We also sponsor a defined contribution retirement savings plan. Participation in this plan is available to substantially all employees. We match employee contributions up to certain predefined limits based upon eligible compensation and the employee’s contribution rate. The cost of this plan was $6 million in 2021, $6 million in 2020, and $5 million in 2019.

12. FAIR VALUE MEASUREMENTS

The measurement of fair value is based on a three-tier hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. For the years ended December 31, 2021 and 2020, there were no transfers between levels.

Our assets measured at fair value subject to the three-tier hierarchy at December 31, 2021, were as follows:


	Fair Value Measurements at Reporting Date Using
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(in millions of USD)	(Level 1)		(Level 2)		(Level 3)
Financial assets measured on a recurring basis:

Mutual funds — fixed income securities	$	51	$	—	$	—
Mutual funds — equity securities	12		—		—
Interest rate swap derivatives	—		2		—


Total	$	63	$	2	$	—

Table of Contents

Our assets measured at fair value subject to the three-tier hierarchy at December 31, 2020, were as follows:


	Fair Value Measurements at Reporting Date Using
	Quoted Prices in Active Markets for Identical Assets		Significant Other Observable Inputs		Significant Unobservable Inputs
(in millions of USD)	(Level 1)		(Level 2)		(Level 3)
Financial assets measured on a recurring basis:
Cash equivalents	$	1	$	—	$	—
Mutual funds — fixed income securities	52		—		—
Mutual funds — equity securities	10		—		—



Total	$	63	$	—	$	—

As of December 31, 2021 and 2020, we held certain assets that are required to be measured at fair value on a recurring basis. The assets included in the table consist of investments recorded within cash and cash equivalents and other long-term assets, including investments held in a trust associated with our supplemental benefit plans described in Note 11. The mutual funds we own are publicly traded and are recorded at fair value based on observable trades for identical securities in an active market. Changes in the observed trading prices and liquidity of money market funds are monitored as additional support for determining fair value. Gains and losses for all mutual fund investments are recorded in other operating income and expense.

As of December 31, 2021, the assets related to derivatives consist of interest rate swaps as discussed in Note 9. The fair value of our interest rate swap derivatives is determined based on a DCF method using LIBOR swap rates, which are observable at commonly quoted intervals.

We also held non-financial assets that are required to be measured at fair value on a non-recurring basis. These consist of goodwill and intangible assets. We did not record any impairment charges on long-lived assets and no other significant events occurred requiring non-financial assets and liabilities to be measured at fair value (subsequent to initial recognition) during the years ended December 31, 2021 and 2020. Refer to Note 8 for additional information on our intangible assets.

Fair Value of Financial Assets and Liabilities

Fixed Rate Debt

Based on the borrowing rates obtained from third party lending institutions currently available for bank loans with similar terms and average maturities from active markets, the fair value of our consolidated long-term debt and debt maturing within one year, excluding revolving credit agreements and commercial paper, was $6,995 million and $7,119 million at December 31, 2021 and 2020, respectively. These fair values represent Level 2 under the three-tier hierarchy described above. The total book value of our consolidated long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving credit agreements and commercial paper, was $6,179 million and $6,097 million at December 31, 2021 and 2020, respectively.

Revolving Credit Agreements

At December 31, 2021 and 2020, we had a consolidated total of $329 million and $198 million, respectively, outstanding under our revolving credit agreements, which are variable rate loans. The fair value of these loans approximates book value based on the borrowing rates currently available for variable rate loans obtained from third party lending institutions. These fair values represent Level 2 under the three-tier hierarchy described above.

Other Financial Instruments

The carrying value of other financial instruments included in current assets and current liabilities, including cash and cash equivalents, special deposits and commercial paper, approximates their fair value due to the short-term nature of these instruments.

Table of Contents

13. STOCKHOLDER'S EQUITY

Accumulated Other Comprehensive Income

The following table provides the components of changes in AOCI:


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Balance at the beginning of period	$	(8)	$	7	$	4


Derivative Instruments
Reclassification of net loss relating to interest rate cash flow hedges from AOCI to earnings (net of tax of $2 for the year ended December 31, 2021, $1 for the year ended December 31, 2020 and less than $1 for the year ended December 31, 2019) (a)	4		3		1

Gain (loss) on interest rate swaps relating to interest rate cash flow hedges (net of tax of $1 for the year ended December 31, 2021, $8 for the year ended December 31, 2020 and $1 for the year ended December 31, 2019)	2		(18)		2




Total other comprehensive income (loss), net of tax	6		(15)		3
Balance at the end of period	$	(2)	$	(8)	$	7

____________________________

(a)The reclassification of the net loss relating to interest rate cash flow hedges is reported in interest expense on a pre-tax basis.

The amount of net loss relating to interest rate cash flow hedges to be reclassified from AOCI to earnings for the 12-month period ending December 31, 2022 is expected to be approximately $4 million (net of tax of less than $2 million). The reclassification is reported in interest expense on a pre-tax basis.

14. SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN

We recorded share-based compensation costs as follows:


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Operation and maintenance expenses	$	2	$	2	$	2
General and administrative expenses	32		23		30
Amounts capitalized to property, plant and equipment	9		7		8
Total share-based compensation costs	$	43	$	32	$	40
Total tax benefit recognized in the consolidated statements of comprehensive income	$	9	$	8	$	8

Long-Term Incentive Plans

Under our long-term incentive plans, we may grant long-term incentive awards of PBUs and SBUs to employees, including executive officers, of ITC Holdings and its subsidiaries. Generally, each PBU and SBU granted will be valued based on one share of Fortis common stock traded on the Toronto Stock Exchange, converted to U.S. dollars and settled only in cash. However, certain SBUs granted to the executives may settle in cash, 100% Fortis common stock, or 50% cash and 50% Fortis common stock depending on executives’ settlement elections and whether certain share ownership requirements are met. PBUs and SBUs that are granted pursuant to our long-term incentive plans generally vest on either the third December 31st or January 1st following the grant date, provided the service and performance criteria, as applicable, are satisfied, and will be settled during the subsequent quarter. However, certain awards may vest over a shorter period or on the grant date if certain retirement eligibility criteria are met. The granted awards and related dividend equivalents have no shareholder rights.

Table of Contents

Performance-Based Units

The PBUs are classified as liability awards based on the cash settlement feature. The PBUs are measured at fair value at the end of each reporting period, which will fluctuate based on the price of Fortis common stock and the level of achievement of the financial performance criteria, including a market condition and a performance condition. The payout may range from 0% - 200% of the target award, depending on actual performance relative to the performance criteria. The PBUs earn dividend equivalents which are also re-measured consistent with the target award and settled in cash at the end of the vesting period.

The following table shows the changes in PBUs during the year ended December 31, 2021:


			Number of
			Performance
			Based Units
PBUs at December 31, 2020			900,951
Granted			314,940
Vested and paid out			(291,325)
Forfeited			(25,474)
PBUs at December 31, 2021			899,092

The following table presents the classification in the consolidated statements of financial position of obligations related to outstanding PBUs not yet settled:


	December 31,
(In millions of USD)	2021		2020
Accrued compensation	$	28	$	20
Other long-term liabilities	25		22
Total	$	53	$	42

The aggregate fair value of PBUs as of December 31, 2021 and 2020 was $72 million and $59 million, respectively. At December 31, 2021, $19 million of total unrecognized compensation cost related to PBUs not yet vested is expected to be recognized over the remaining weighted-average period of 1.7 years.

Service-Based Units

The SBUs are classified as liability awards based on the possibility of cash settlement. The SBUs are measured at fair value at the end of each reporting period, which will fluctuate based on the price of Fortis common stock. The SBUs earn dividend equivalents which are also re-measured based on the price of Fortis common stock and settled in cash at the end of the vesting period.

The following table shows the changes in SBUs during the year ended December 31, 2021:


			Number of
			Service
			Based Units
SBUs at December 31, 2020			687,710
Granted			247,181
Vested and paid out			(219,605)
Forfeited			(25,474)
SBUs at December 31, 2021			689,812

Table of Contents

The following table presents the classification in the consolidated statements of financial position of obligations related to outstanding SBUs not yet settled:


	December 31,
(In millions of USD)	2021		2020
Accrued compensation	$	11	$	9
Other long-term liabilities	11		10
Total	$	22	$	19

The aggregate fair value of SBUs as of December 31, 2021 and 2020 was $32 million and $28 million, respectively. At December 31, 2021, $10 million of the total unrecognized compensation cost related to SBUs not yet vested is expected to be recognized over the remaining weighted-average period of 1.7 years.

Employee Share Purchase Plan

ITC employees are permitted to purchase common shares of Fortis stock under the Fortis ESPP. ITC Holdings also makes contributions as additional compensation to participating employees’ ESPP accounts. The cost of ITC Holdings’ contribution for the years ended December 31, 2021, 2020, and 2019 was less than $1 million, respectively.

15. JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES

Certain of our Regulated Operating Subsidiaries have agreements with other utilities for the joint ownership of substation assets and transmission lines as discussed in Note 2. We have investments in jointly owned utility assets as shown in the table below as of December 31, 2021:


	Net Investments (a)
(In millions of USD)	Substations		Lines
ITCTransmission (b)	$	—	$	29
METC (c)	17		41
ITC Midwest (d)	49		103
ITC Great Plains (e)	10		23
Total	$	76	$	196

____________________________

(a)Amount represents our investment in jointly held plant in-service, which has been reduced by the ownership interest amounts of other parties.

(b)ITCTransmission has a 49.6% joint ownership in 345 kV transmission lines with a municipal power agency.

(c)METC has joint ownership in several assets within various substations and several 345 kV transmission lines with various parties including Consumers Energy. As of December 31, 2021, METC’s ownership percentages for jointly owned substation facilities and lines ranged from less than 1.0% to 92.0% and 1.0% to 41.9%, respectively.

(d)ITC Midwest has joint ownership in several substations and transmission lines with various parties. ITC Midwest’s ownership percentages for jointly owned substation facilities and lines ranged from 28.0% to 80.0% and 11.0% to 80.0%, respectively, as of December 31, 2021. In addition to the jointly held plant in-service, ITC Midwest has $71 million of construction work in progress for jointly held plant in the consolidated statements of financial position as of December 31, 2021.

(e)ITC Great Plains has a 51.0% joint ownership in a transmission project with an electric cooperative.

16. RELATED PARTY TRANSACTIONS

Intercompany Receivables and Payables

ITC Holdings may incur charges from Fortis and other subsidiaries of Fortis that are not subsidiaries of ITC Holdings for general corporate expenses incurred. In addition, ITC Holdings may perform additional services for, or receive additional services from, Fortis and such subsidiaries. These transactions are in the normal course of

Table of Contents

business and payments for these services are settled through accounts receivable and accounts payable, as necessary. We had intercompany receivables from Fortis and such subsidiaries of $2 million and less than $1 million at December 31, 2021 and December 31, 2020, respectively, and intercompany payables to Fortis and such subsidiaries of less than $1 million at December 31, 2021 and December 31, 2020.

Related party charges for corporate expenses from Fortis and such subsidiaries are recorded in general and administrative expense. ITC Holdings had such expense for the years ended December 31, 2021, 2020 and 2019 of $10 million. Related party billings for services to Fortis and other subsidiaries recorded as an offset to general and administrative expenses for ITC Holdings were $2 million for each of the years ended December 31, 2021 and 2020, and less than $1 million for the year ended December 31, 2019.

Dividends

We paid dividends of $232 million, $330 million and $250 million during the years ended December 31, 2021, 2020 and 2019, respectively, to ITC Investment Holdings. ITC Holdings also paid dividends of $64 million to ITC Investment Holdings in January 2022.

Transfer of Membership Interests

In February 2021, we transferred our membership interests in certain wholly-owned development entities to our parent company, ITC Investment Holdings. The transfer was accounted for at book value as a non-reciprocal transfer of value. There was no gain or loss recognized on the transfer. The transfer did not have a material impact on our consolidated financial condition, results of operations or cash flows.

Intercompany Tax Sharing Agreement

We are organized as a corporation for tax purposes and subject to a tax sharing agreement as a wholly-owned subsidiary of ITC Investment Holdings. Additionally, we record income taxes based on our separate company tax position and make or receive tax-related payments with ITC Investment Holdings. During the year ended December 31, 2021, we did not make or receive any tax-related payments with ITC Investment Holdings. During year ended December 31, 2020, we paid $2 million to ITC Investment Holdings for matters related to the State of Michigan income taxes. During the year ended December 31, 2019 we did not make or receive any tax-related payments with ITC Investment Holdings.

During each of the years ended December 31, 2020 and 2019, we received a payment of $2 million from FortisUS for a tax refund that originated prior to establishing the tax sharing agreement.

17. COMMITMENTS AND CONTINGENT LIABILITIES

Environmental Matters

We are subject to federal, state and local environmental laws and regulations, which impose limitations on the discharge of pollutants into the environment, require reporting of emissions from certain equipment, establish standards for the management, treatment, storage, transportation and disposal of hazardous materials and of solid and hazardous wastes, and impose obligations to investigate and remediate contamination in certain circumstances. Liabilities relating to investigation and remediation of contamination, as well as other liabilities concerning hazardous materials or contamination, such as claims for personal injury or property damage, may arise at many locations, including formerly owned or operated properties and sites where wastes have been treated or disposed of, as well as properties currently owned or operated by us. Such liabilities may arise even where the contamination does not result from noncompliance with applicable environmental laws. Under some environmental laws, such liabilities may also be joint and several, meaning that a party can be held responsible for more than its share of the liability involved, or even the entire share. Although environmental requirements generally have become more stringent and compliance with those requirements more expensive, we are not aware of any specific developments that would increase our costs for such compliance in a manner that would be expected to have a material adverse effect on our financial condition, results of operations or liquidity.

Our assets and operations also involve the use of materials classified as hazardous, toxic or otherwise dangerous. Some of the properties that we own or operate have been used for many years and include older facilities and equipment that may be more likely than newer ones to contain or be made from such materials. Some of these properties include above ground or underground storage tanks and associated piping. Some of them also include large electrical equipment filled with mineral oil, which may contain or previously have

Table of Contents

contained PCBs. Some of our facilities and electrical equipment may also contain asbestos containing materials. Our facilities and equipment are often situated close to or on property owned by others so that, if they are the source of contamination, the property of others may be affected. For example, above ground and underground transmission lines sometimes traverse properties that we do not own and transmission assets that we own or operate are sometimes commingled at our transmission stations with distribution assets owned or operated by our transmission customers.

Some properties in which we have an ownership interest or at which we operate are, or are suspected of being, affected by environmental contamination. We are not aware of any pending or threatened claims against us with respect to environmental contamination relating to these properties, or of any investigation or remediation of contamination at these properties, that entail costs likely to materially affect us. Some facilities and properties are located near environmentally sensitive areas, including wetlands and habitat for threatened and endangered species.

Litigation

We are involved in certain legal proceedings before various courts, governmental agencies and mediation panels concerning matters arising in the ordinary course of business. These proceedings include certain contract disputes, eminent domain and vegetation management activities, regulatory matters and pending judicial matters. We cannot predict the final disposition of such proceedings. We regularly review legal matters and record provisions for claims that are considered probable of loss.

Rate of Return on Equity Complaints

Two complaints were filed with the FERC by combinations of consumer advocates, consumer groups, municipal parties and other parties challenging the base ROE in MISO. The complaints were filed with the FERC under Section 206 of the FPA requesting that the FERC find the MISO regional base ROE rate (the “base ROE”) for all MISO TO’s, including our MISO Regulated Operating Subsidiaries, to no longer be just and reasonable.

Initial Complaint

On November 12, 2013, the Association of Businesses Advocating Tariff Equity, Coalition of MISO Transmission Customers, Illinois Industrial Energy Consumers, Indiana Industrial Energy Consumers, Inc., Minnesota Large Industrial Group and Wisconsin Industrial Energy Group (collectively, the “complainants”) filed the Initial Complaint with the FERC. The complainants sought a FERC order to reduce the base ROE used in the formula transmission rates for our MISO Regulated Operating Subsidiaries to 9.15%, reducing the equity component of our capital structure and terminating the ROE adders approved for certain Regulated Operating Subsidiaries. The FERC set the base ROE for hearing and settlement procedures, while denying all other aspects of the Initial Complaint. The ROE collected through the MISO Regulated Operating Subsidiaries’ rates during the period November 12, 2013 through September 27, 2016 consisted of a base ROE of 12.38% plus applicable incentive adders.

On September 28, 2016, the FERC issued the September 2016 Order that set the base ROE at 10.32%, with a maximum ROE of 11.35%, effective for the period from November 12, 2013 through February 11, 2015 based on a two-step DCF methodology adopted in previous complaint matters for other utilities. The September 2016 Order required our MISO Regulated Operating Subsidiaries to provide refunds, including interest, which were completed in 2017. Additionally, the base ROE established by the September 2016 Order was to be used prospectively from the date of that order until a new approved base ROE was established by the FERC. On October 28, 2016, the MISO TOs, including our MISO Regulated Operating Subsidiaries, filed a request with the FERC for rehearing of the September 2016 Order regarding the short-term growth projections in the two-step DCF analysis. Additional impacts to the base ROE for the period of the Initial Complaint and the related accrued refund liabilities resulted from the November 2019 Order and May 2020 Order issued by the FERC, as discussed below.

Second Complaint

On February 12, 2015, the Second Complaint was filed with the FERC by Arkansas Electric Cooperative Corporation, Mississippi Delta Energy Agency, Clarksdale Public Utilities Commission, Public Service Commission of Yazoo City and Hoosier Energy Rural Electric Cooperative, Inc., seeking a FERC order to

Table of Contents

reduce the base ROE used in the formula transmission rates of our MISO Regulated Operating Subsidiaries to 8.67%, with an effective date of February 12, 2015.

On June 30, 2016, the presiding ALJ issued an initial decision that recommended a base ROE of 9.70% for the refund period from February 12, 2015 through May 11, 2016, with a maximum ROE of 10.68%, which also would be applicable going forward from the date of a final FERC order. The Second Complaint was dismissed as a result of the November 2019 Order and the dismissal of the complaint was reaffirmed in the May 2020 Order, as discussed below.

November 2019 Order

On November 21, 2019, the FERC issued an order in the MISO ROE Complaints which applied a methodology to the Initial Complaint period that used two financial models to determine the base ROE. The FERC determined that the base ROE for the Initial Complaint should be 9.88% and the top of the range of reasonableness for that period should be 12.24% and that this base ROE should apply during the first refund period of November 12, 2013 to February 11, 2015 and from the date of the September 2016 Order prospectively. In the November 2019 Order, the FERC also dismissed the Second Complaint. Therefore, based on the November 2019 Order, for the Second Complaint refund period from February 12, 2015 to May 11, 2016, no refund is due. As a result, in 2019, we reversed the aggregate estimated current liability we had previously recorded for the Second Complaint. In addition, for the period from May 12, 2016 to September 27, 2016, no refund is due because no complaint had been filed for that period. The FERC ordered refunds to be made in accordance with the November 2019 Order. The MISO TOs, including our MISO Regulated Operating Subsidiaries, and several other parties filed requests for rehearing of the November 2019 Order. The MISO TOs asserted that the methodology applied by the FERC in the November 2019 Order does not allow the MISO TOs to earn a reasonable rate of return on their investment, as required by precedent. On January 21, 2020, the FERC issued an order granting rehearing of the November 2019 Order for further consideration.

May 2020 Order

On May 21, 2020, the FERC issued an order on rehearing of the November 2019 Order. In this order, the FERC revised its November 2019 Order methodology, finding that three financial models should be used to determine the base ROE, among other revisions. By applying the new methodology, the FERC determined that the base ROE for the Initial Complaint should be 10.02% and the top of the range of reasonableness for that period should be 12.62%. The FERC determined that this base ROE should apply during the first refund period of November 12, 2013 to February 11, 2015 and from the date of the September 2016 Order prospectively. The FERC ordered refunds to be made in accordance with the May 2020 Order by December 23, 2020. On October 8, 2020, the FERC granted an extension to September 23, 2021 and on August 2, 2021 the FERC granted a second extension to February 28, 2022. On December 16, 2021, MISO requested a third extension to May 31, 2022, and that remains pending. In the May 2020 Order, the FERC also reaffirmed its decision to dismiss the Second Complaint and its finding that no refunds would be ordered on the Second Complaint. Our MISO Regulated Operating Subsidiaries are parties to multiple appeals of the September 2016 Order, November 2019 Order and May 2020 Order at the D.C. Circuit Court.

Financial Statement Impacts

As of December 31, 2021, we had recorded an aggregate current regulatory asset and liability of $1 million and less than $1 million, respectively, and as of December 31, 2020, we had recorded an aggregate current regulatory asset and liability of $8 million and $13 million, respectively, in the consolidated statements of financial position. These impacts reflect amounts owed from or due to customers under the terms outlined in the May 2020 Order and the November 2019 Order on the Initial Complaint and the periods subsequent to the September 2016 Order. During the year ended December 31, 2021, we refunded net settlement payments of $5 million due to customers related to this ROE matter and during the year ended December 31, 2020, we refunded net settlement payments of $31 million due to customers related to this ROE matter.

Although the November 2019 Order and May 2020 Order dismissed the Second Complaint with no refunds required, it is possible upon resolution of the pending appeals that our MISO Regulated Operating Subsidiaries could be required to provide material refunds related to the Second Complaint.

Table of Contents

Our MISO Regulated Operating Subsidiaries currently record revenues at the base ROE of 10.02% established in the May 2020 Order plus applicable incentive adders. See Note 5 for a summary of incentive adders for transmission rates.

The recognition of the obligations associated with the MISO ROE Complaints resulted in the following impacts to the consolidated statements of comprehensive income:


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Revenue increase	$	—	$	32	$	69
Interest expense decrease	—		(3)		(12)
Estimated net income increase	—		25		61

As of December 31, 2021, our MISO Regulated Operating Subsidiaries had a total of approximately $5 billion of equity in their collective capital structures for ratemaking purposes. Based on this level of aggregate equity, we estimate that each 10 basis point change in the authorized ROE would impact annual consolidated net income by approximately $5 million.

Purchase Obligations

At December 31, 2021, we had purchase obligations of $126 million representing commitments for materials, services and equipment that had not been received as of December 31, 2021, primarily for construction and maintenance projects for which we have an executed contract. Of these purchase obligations, $107 million is expected to be paid in 2022, with the majority of the items related to materials and equipment that have long production lead times.

Other Commitments

METC

Amended and Restated Easement Agreement. Under the Easement Agreement, Consumers Energy provides METC with an easement to the land on which a majority of METC’s transmission towers, poles, lines and other transmission facilities used to transmit electricity for Consumers Energy and others are located. The term of the Easement Agreement runs through December 31, 2050 and is subject to 10 automatic 50-year renewals thereafter unless METC gives notice of nonrenewal at least one year in advance. METC pays Consumers Energy $10 million in annual rent per year for the easement and also pays for any rentals, property, taxes, and other fees related to the property covered by the Easement Agreement. Payments to Consumers Energy under the Easement Agreement are charged to operation and maintenance expenses.

ITC Midwest

ITC Great Plains

Concentration of Credit Risk

Table of Contents

respectively, of our consolidated billed revenues for the year ended December 31, 2021. This portion of total billed revenues of DTE Electric, Consumers Energy and IP&L include the collection of 2019 revenue accruals and deferrals and exclude any amounts for the 2021 revenue accruals and deferrals that were included in our 2021 operating revenues but will not be billed to our customers until 2023. Under DTE Electric’s and Consumers Energy’s current rate structure, DTE Electric and Consumers Energy include in their retail rates the actual cost of transmission services provided by ITCTransmission and METC, respectively, in their billings to their customers, effectively passing through to end-use consumers the total cost of transmission service. IP&L currently includes in their retail rates an allowance for transmission services provided by ITC Midwest in their billings to their customers. However, any financial difficulties experienced by DTE Electric, Consumers Energy or IP&L may affect their ability to make payments for transmission service to ITCTransmission, METC, and ITC Midwest, which could negatively impact our business. MISO, as our MISO Regulated Operating Subsidiaries’ billing agent, bills DTE Electric, Consumers Energy, IP&L and other customers on a monthly basis and collects fees for the use of the MISO Regulated Operating Subsidiaries’ transmission systems. SPP is the billing agent for ITC Great Plains and bills transmission customers for the use of ITC Great Plains transmission systems. MISO and SPP have implemented strict credit policies for its members’ customers, which include customers using our transmission systems. Specifically, MISO and SPP require a letter of credit or cash deposit equal to the credit exposure, which is determined by a credit scoring model and other factors, from any customer using a member’s transmission system.

The financial results of ITC Interconnection are currently not material to our consolidated financial statements, including billed revenues.

18. SUPPLEMENTAL FINANCIAL INFORMATION

Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the consolidated statements of financial position that sum to the total of the same such amounts shown in the consolidated statements of cash flows:


	December 31,
(In millions of USD)	2021		2020		2019		2018
Cash and cash equivalents	$	5	$	4	$	4	$	6
Restricted cash included in:
Other non-current assets	2		2		2		4
Total cash, cash equivalents and restricted cash	$	7	$	6	$	6	$	10

Restricted cash included in other non-current assets primarily represents cash on deposit to pay for vegetation management, land easements and land purchases for the purpose of transmission line construction as well as amounts liquidated to make benefit payments related to our supplemental benefit plans.

Table of Contents

Supplementary Cash Flow Information


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Supplementary cash flows information:
Interest paid (net of interest capitalized)	$	237	$	236	$	228
Income taxes paid	—		2		—
Income tax refunds received	—		2		3
Supplementary non-cash investing and financing activities:
Additions to property, plant and equipment and other long-lived assets (a)	140		135		92
Allowance for equity funds used during construction	30		27		29
Right-of-use assets obtained in exchange for new operating lease liabilities	—		—		5
Other	3		—		—

____________________________

(a)Amounts consist of current and accrued liabilities for construction, labor, materials and other costs that have not been included in investing activities. These amounts have not been paid for as of December 31, 2021, 2020 or 2019, respectively, but will be or have been included as a cash outflow from investing activities for expenditures for property, plant and equipment or repayments of contributions in aid of construction when paid.

19. SEGMENT INFORMATION

We identify reportable segments based on the criteria set forth by the FASB regarding disclosures about segments of an enterprise, including the regulatory environment of our subsidiaries and the business activities performed to earn revenues and incur expenses.

Regulated Operating Subsidiaries

We aggregate ITCTransmission, METC, ITC Midwest, ITC Great Plains and ITC Interconnection into one reportable operating segment based on their similar regulatory environment and economic characteristics, among other factors. They are engaged in the transmission of electricity within the United States, earn revenues from the same types of customers and are regulated by the FERC.

ITC Holdings and Other

Information below for ITC Holdings and Other consists primarily of a holding company whose activities include debt financings and general corporate activities. The other subsidiaries of ITC Holdings, excluding the Regulated Operating Subsidiaries, do not have significant operations.

Table of Contents


	Regulated
	Operating		ITC Holdings		Reconciliations/
2021	Subsidiaries		and Other		Eliminations		Total
(In millions of USD)
Operating revenues	$	1,386	$	1	$	(38)	$	1,349
Depreciation and amortization	231		1		—		232
Interest expense, net	123		129		(1)		251
Income (loss) before income taxes	691		(158)		—		533
Income tax provision (benefit)	173		(46)		—		127
Net income	518		406		(518)		406
Property, plant and equipment, net	9,954		7		—		9,961
Goodwill	950		—		—		950
Total assets (a)	11,317		6,134		(6,006)		11,445
Capital expenditures	841		—		(7)		834


	Regulated
	Operating		ITC Holdings		Reconciliations/
2020	Subsidiaries		and Other		Eliminations		Total
(In millions of USD)
Operating revenues	$	1,333	$	1	$	(36)	$	1,298
Depreciation and amortization	218		1		—		219
Interest expense, net	118		122		—		240
Income (loss) before income taxes	683		(140)		—		543
Income tax provision (benefit)	179		(43)		—		136
Net income	504		407		(504)		407
Property, plant and equipment, net	9,319		8		—		9,327
Goodwill	950		—		—		950
Total assets (a)	10,710		5,830		(5,715)		10,825
Capital expenditures	886		—		(1)		885


	Regulated
	Operating		ITC Holdings		Reconciliations/
2019	Subsidiaries		and Other		Eliminations		Total
(In millions of USD)
Operating revenues	$	1,358	$	—	$	(31)	$	1,327
Depreciation and amortization	201		2		—		203
Interest expense, net	105		119		—		224
Income (loss) before income taxes	710		(150)		—		560
Income tax provision (benefit)	179		(47)		—		132
Net income	531		428		(531)		428
Property, plant and equipment, net	8,573		9		—		8,582
Goodwill	950		—		—		950
Total assets (a)	9,946		5,402		(5,290)		10,058
Capital expenditures	874		—		(9)		865

____________________________

(a)Reconciliation of total assets results primarily from differences in the netting of deferred tax assets and liabilities in our segments as compared to the classification in our consolidated statements of financial position.

Table of Contents

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE.

None.

ITEM 9A. CONTROLS AND PROCEDURES.

Management’s Report on Internal Control Over Financial Reporting is included in Item 8. of this Form 10-K.

Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to provide reasonable assurance that material information required to be disclosed in our reports that we file or submit under the Exchange Act, is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required financial disclosure. In designing and evaluating the disclosure controls and procedures, management recognized that a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and instances of fraud, if any, with a company have been detected.

As of the end of the period covered by this report, we carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures pursuant to Rule 13a-15 of the Exchange Act. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures are effective, at the reasonable assurance level.

Changes in Internal Control over Financial Reporting

There have been no changes in our internal control over financial reporting during the quarter ended December 31, 2021 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B. OTHER INFORMATION.

None.

ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS.

Not Applicable.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE.

DIRECTORS

Our Bylaws provide for the election of directors at each annual meeting of shareholders. Each director serves until the next annual meeting and until his or her successor is elected and qualified, or until his or her resignation or removal.

The Board must consist of the Chief Executive Officer of the Company (Ms. Apsey), a minority of representatives of Fortis (Mr. Hutchens and Ms. Perry) and a majority of directors who are independent of Fortis. Mr. Laurito previously served as a Fortis representative until his retirement from Fortis on December 31, 2021. Due to Mr. Laurito’s affiliation with Fortis, he will remain a non-independent director for at least 3 years from his retirement from Fortis. All directors must be independent of any “market participant” in MISO and SPP and a majority of the directors must be “independent” as defined in the Shareholders Agreement. See “Item 13. Certain Relationships And Related Transactions, And Director Independence — Director Independence.”

Linda H. Apsey, 52. Ms. Apsey became President and Chief Executive Officer of the Company in November 2016 and was elected a director of the Company in January 2017. From May 2016 through January 2017, Ms. Apsey served as the Company’s Executive Vice President and Chief Business Unit Officer, where she was

Table of Contents

responsible for leading all aspects of the financial and operational performance of our five Regulated Operating Subsidiaries and the Company’s development. She had previously served as the Company’s Executive Vice President, Chief Business Unit Officer and President, ITC Michigan since February 2015 where she was responsible for leading all aspects of the financial and operational performance of the Company’s five Regulated Operating Subsidiaries and acting as the business unit head and president of the ITCTransmission and METC operating companies. Ms. Apsey currently serves as a director of the Fortis utility subsidiary, FortisAlberta Inc. The Board selected Ms. Apsey to serve as a director due to her position as President and Chief Executive Officer of the Company.

Leanne M. Bell, 61. Ms. Bell became a director of the Company in February 2022. Ms. Bell is a retired financial and power infrastructure expert with a portfolio of board work spanning the infrastructure space in both the United States and Europe. She has overseen the investment of more than $6 billion in global power infrastructure projects and companies. Before committing full time to non-executive board roles in 2014, Ms. Bell was Chief Financial Officer of Synergy Renewables LLC, Managing Director of Tiger Infrastructure Partners (formerly Lehman Brothers Global Infrastructure Partners) and Managing Director of GE Energy Financial Services. She currently sits on the boards of Ventient Energy Services Limited, Nassau Financial Group and Third Coast Midstream, LLC. She previously served on the board of Onward Energy Services from 2018 to 2020 and John Laing Group from 2020 to 2021. The Board selected Ms. Bell to serve as a director due to her expansive career in the financial and energy industries. Ms. Bell serves on the Audit and Risk Committee.

Robert A. Elliott, 66. Mr. Elliott became a director of the Company in January 2017. Mr. Elliott has served as President and Owner of Elliott Accounting, an accounting, income tax and management advisory services organization in Tucson, Arizona, since 1983. He also serves as an Investment Advisor Representative for Greenberg Financial Group, a brokerage firm, a position in which he has served since 2001. Mr. Elliott has been a board member of UNS Energy Corporation, a subsidiary of Fortis, since 2014, serving as the Chair of the Board until 2021 . Mr. Elliott currently serves on the board of directors of AAA Mountain West Group and has served since 2016. He is the Chair of the board of directors of AAA Auto Club Partners. He previously served on the board of directors of AAA Arizona Inc. from 2007 to 2016. The Board selected Mr. Elliott to serve as a director because of his accounting experience, his familiarity with Fortis subsidiary operations and his experience serving as a leader on other boards of directors. Mr. Elliott serves as Chairperson of the Audit and Risk Committee, and the Board has determined that Mr. Elliott is an “audit committee financial expert,” as that term is defined under applicable SEC rules.

Debora M. Frodl, 56. Ms. Frodl became a director of the Company in August 2020. Ms. Frodl is the founder of DF Strategies, a strategic consultancy firm in Minneapolis, MN, since 2018. She previously enjoyed a 28-year career at General Electric, where she most recently was Global Executive Director, Ecomagination from December 2012 to December 2017. Ms. Frodl gained over twenty years of senior executive experience at GE Capital, serving in roles including Senior Vice President and CEO and President. Ms. Frodl currently serves as a member of the Board of Directors for Renewable Energy Group, Inc., XL Fleet Corporation, and Spring Valley Acquisition Corporation. Since 2014, Ms. Frodl has served as an ambassador for the US Department of Energy’s Clean Energy, Education & Empowerment for Women Initiative. She also serves on the Advisory Board for the National Renewable Energy Lab, Joint Institute of Strategic Energy Analysis and University of Minnesota, Institute on the Environment. The Board selected Ms. Frodl to serve as a director due to her career in the energy industry, and her leadership experience and familiarity within the geographic region in which the Company operates and conducts its business. Ms. Frodl serves on the Governance and Human Resources Committee.

Lt. Gen. Ronnie Hawkins, Jr., USAF, Retired, 66. Lt. Gen. Hawkins, Jr. became a director of the Company in June 2020. Lt. Gen. Hawkins Jr. was appointed as President of Angelo State University, which is part of the Texas Tech University System, in 2020. Lt. Gen. Hawkins Jr. is also the President and CEO of the Hawkins Group, a consultancy focusing on digital, information technology and cybersecurity challenges for Fortune 500 clients and the U.S. Government. He founded the Hawkins Group in 2015 after serving more than a 37-year decorated career in the United States Air Force, which included leadership roles in critical infrastructure and key information systems used by the Department of Defense and its coalition partners. The Board selected Lt. Gen. Hawkins Jr. due to his vast knowledge of cybersecurity and information systems as well as his leadership experience. Mr. Hawkins serves on the Governance and Human Resources Committee.

Table of Contents

David G. Hutchens, 55. Mr. Hutchens became a director of the Company in January 2021. Mr. Hutchens is the President and Chief Executive Officer of Fortis and has served as such since January 2021. Prior to his current position, Mr. Hutchens was appointed to Chief Operating Officer of Fortis in January 2020 while concurrently serving as the Chief Executive Officer of UNS Energy Corporation, a position in which he held since May 2014. Mr. Hutchens also served as Executive Vice President, Western Utility Operations with Fortis from 2018 to 2020. His career in the energy sector spans more than 25 years, having held a variety of positions at electric and gas utilities in Arizona. He currently serves as a director of the Fortis utility subsidiaries, FortisBC, Fortis Alberta and UNS Energy Corporation. The Board selected Mr. Hutchens to serve based on his relevant business and leadership experience and because he is a director representative of Fortis. Mr. Hutchens serves on the Governance and Human Resources Committee.

James P. Laurito, 65. Mr. Laurito became a director of the Company in October 2016. Mr. Laurito retired from Fortis in December 2021. He previously served as Fortis’ Executive Vice President, Business Development since April 2016 and as Chief Technology Officer from 2018 until his retirement. Previously, Mr. Laurito served as the President and Chief Executive Officer of Fortis’ Central Hudson Gas & Electric Corporation subsidiary from January 2010 to November 2014. Prior to joining Central Hudson, Mr. Laurito served as the President and Chief Executive Officer of both New York State Electric and Gas Corporation and Rochester Gas and Electric Corporation, subsidiaries of Avangrid, Inc. Mr. Laurito served as a board member of Fortis’ Central Hudson Gas & Electric Corporation subsidiary from 2014 to 2021. He has been Chairman of the Hudson Valley Economic Development Corporation since January 2015 and currently serves on the board of Belize Electricity Co. Ltd. and Bowman Consulting Group, also serving as the Chair of the Compensation Committee of Bowman Consulting Group. The Board selected Mr. Laurito to serve due to his expansive background in the utility industry and his regulatory knowledge. Mr. Laurito serves on the Governance and Human Resources Committee.

Jocelyn H. Perry, 51. Ms. Perry became a director of the Company in January 2022. Ms. Perry has served as Fortis’ Executive Vice President and Chief Financial Officer since 2018. Previously, Ms. Perry was the President and Chief Executive Officer of Fortis’ Newfoundland Power subsidiary from 2017 to 2018 and as its Chief Operating Officer from 2016 to 2017. Ms. Perry currently serves on the boards of Fortis’ subsidiaries FortisBC and UNS Energy Corporation. The Board selected Ms. Perry to serve based on her relevant business and leadership experience and because she is a director representative of Fortis. Ms. Perry serves on the Audit and Risk Committee.

Sandra E. Pierce, 63. Ms. Pierce was appointed as Chair of the Board of Directors of the Company in May 2020 and has served as a director of the Company since January 2017. Ms. Pierce is Senior Executive Vice President, Private Client Group & Regional Banking Director and Chair of Michigan for Huntington National Bank. Ms. Pierce joined Huntington in 2016 after its merger with FirstMerit Corporation in 2016. While at FirstMerit, Ms. Pierce served as Vice Chairman of FirstMerit Corporation and Chairman and CEO of FirstMerit Michigan, from 2013 to 2016. Ms. Pierce currently serves as a board member of Barton Malow Enterprises, Penske Automotive Group and American Axle & Manufacturing, Inc. She also serves as the vice chair of Business Leaders of Michigan, chair of the Detroit Financial Advisory Board and the chair of the Henry Ford Health System. The Board selected Ms. Pierce to serve as a director due to her leadership experience and familiarity with the geographic region in which the Company operates and conducts business.

Kevin L. Prust, 66. Mr. Prust became a director of the Company in January 2017. Mr. Prust retired in 2014 as Executive Vice President and Chief Financial Officer of The Weitz Company, LLC, a large national and international construction firm, a position he held since joining the company in 2009. Prior to that, Mr. Prust was with McGladrey & Pullen LLP, a national CPA firm, from 1978 through 2008 serving in various positions and becoming partner in 1985. Mr. Prust previously served on the board of Mercy Medical Center, in Des Moines, Iowa from 2009 to 2018. In 2015 Mr. Prust served on the board of Stock Building Supply Holdings, Inc. until the company was acquired. The Board selected Mr. Prust to serve as a director because of the expansive financial and accounting experience he obtained as a chief financial officer as well as his familiarity with the geographic region in which the Company operates and conducts business. Mr. Prust serves on the Audit and Risk Committee and the Board has determined that Mr. Prust is an “audit committee financial expert,” as that term is defined under applicable SEC rules.

A. Douglas Rothwell, 65. Mr. Rothwell became a director of the Company in October 2017. Mr. Rothwell served as President and CEO of Business Leaders for Michigan - a business roundtable of the state’s top 100

Table of Contents

CEOs from 2005 through 2020. Mr. Rothwell currently chairs the University of North Carolina at Chapel Hill’s (“UNC”) Ackland Museum board in addition to serving as an Executive Residence for Economic Development at UNC. He previously chaired the Michigan Economic Development Corporation, the American Center for Mobility and the UNC Board of Visitors. The Board selected Mr. Rothwell to serve as a director because of his vast experience working with business leaders in various industries to foster business development and growth and his familiarity and business contacts within the geographic region in which the Company operates and conducts business. Mr. Rothwell serves as the Chair of the Governance and Human Resources Committee.

EXECUTIVE OFFICERS

Set forth below are the names, ages and titles of our current executive officers and a description of their business experience. Our executive officers serve as executive officers at the pleasure of the Board of Directors.

Linda H. Apsey, 52. Ms. Apsey’s background is described above under “Directors.”

Gretchen L. Holloway, 47. Ms. Holloway was named Senior Vice President and Chief Financial Officer in July 2017. Prior to this role, Ms. Holloway served as Vice President, Interim Chief Financial Officer and Treasurer, a position in which she served since October 2016. In her role, Ms. Holloway is responsible for the Company’s accounting, internal audit, treasury, financial planning and analysis, management reporting, risk management and tax functions. From May 2016 to October 2016, Ms. Holloway was Vice President and Treasurer and from November 2015 until May 2016, Ms. Holloway served as Vice President, Finance and Treasurer of the Company. In this role and her immediate past role, she was responsible for all treasury and corporate planning activities including cash management and as the Company’s liaison with the investment banking community and rating agencies. Ms. Holloway served from February 2015 to November 2015 as Vice President, Finance of the Company, where she was responsible for corporate finance activities including oversight of the budget and forecast processes and other financial analysis. Ms. Holloway currently serves as a member of the Finance & Audit Committee for the Children’s Hospital of Michigan Foundation and as a member of the Board of Directors of Inforum.

Jon E. Jipping, 55. Jon E. Jipping has served as Executive Vice President and Chief Operating Officer since June 2007. Mr. Jipping is responsible for transmission system planning, system operations, engineering, supply chain, field construction and maintenance, and information technology. Prior to this appointment, Mr. Jipping served as Senior Vice President - Engineering and was responsible for transmission system design, project engineering and asset management. Mr. Jipping joined the Company as Director of Engineering in March 2003, was appointed Vice President - Engineering in 2005 and was named Senior Vice President in February 2006. Mr. Jipping currently serves on the board of Wataynikaneyap Power PM Inc., an entity owned by FortisOntario, Inc., a subsidiary of Fortis, which was created to develop and operate transmission to connect remote First Nation communities to the electrical grid in northwestern Ontario, Canada. He was appointed to the Michigan Technological University Board of Trustees as a Board Member in 2020.

Christine Mason Soneral, 49. Christine Mason Soneral has served as Senior Vice President, General Counsel, Secretary and Chief Compliance Officer since October 2020. She was named Senior Vice President and General Counsel in April 2015 and served as Vice President and General Counsel from February 2015 through this appointment. She is responsible for all corporate legal affairs and the leadership of our legal department, which includes the legal, real estate, contract administration and corporate compliance functions. Prior to this role, Ms. Mason Soneral was Vice President and General Counsel-Utility Operations since 2007 and was responsible for legal matters connected with the operations, capital projects, contract, regulatory, property and litigation matters of the Company’s Regulated Operating Subsidiaries. Ms. Mason Soneral served on the board of Citizens Research Council, a privately funded, not-for-profit public affairs research organization from 2014 to 2020. Ms. Mason Soneral also currently serves as a member of the Michigan State University College of Social Science's External Advisory Board and is a Co-Founder and Director of Michigan State University’s Women’s Leadership Institute.

Krista K. Tanner, 47. Ms. Tanner has served as our Senior Vice President and Chief Business Officer since February 2019. Ms. Tanner is responsible for strategic direction, customer service, local government and community affairs and financial performance for four of the Company’s operating subsidiaries: ITC Midwest, ITC Great Plains, ITCTransmission and METC. In addition, she is responsible for federal regulatory and legislative affairs and marketing and communications. Ms. Tanner joined the Company in November 2014 where she

Table of Contents

served as Vice President, ITC Holdings and President, ITC Midwest. In this role she served as the business unit head, providing leadership and strategic direction for ITC Midwest. Ms. Tanner joined the Company from Alliant Energy, where she served as director of regulatory policy from 2011 to 2014. While at Alliant Energy she directed Alliant Energy’s regional and federal regulatory policy group and led Alliant Energy’s legal strategy across regulatory jurisdictions. Prior to working at Alliant Energy, Ms. Tanner was a state regulatory commissioner on the Iowa Utilities Board from 2007 - 2011. Ms. Tanner previously served as a member of the Board of Directors of the Midwest Reliability Organization from 2017 to 2019. Ms. Tanner currently serves as a member of the Board of Directors of Delta Dental of Iowa.

Code of Conduct and Ethics

We have adopted a Code of Conduct and Ethics that applies to all of our directors, employees and executive officers, including our chief executive officer, chief financial officer and principal accounting officer. The Code of Conduct and Ethics, as currently in effect (together with any amendments that may be adopted from time to time), is available on our website at www.itc-holdings.com. To the extent required by the Code of Conduct and Ethics or by applicable law, we will post any amendments to the Code of Conduct and Ethics and any waivers that are required to be disclosed by the rules of the SEC on our website, within the required periods.

ITEM 11. EXECUTIVE COMPENSATION.

COMPENSATION OF EXECUTIVE OFFICERS AND DIRECTORS

Compensation Discussion and Analysis

The following Compensation Discussion and Analysis describes the elements of compensation for our Chief Executive Officer (or “CEO”), our Chief Financial Officer and the three other most highly compensated executive officers who were serving as such at December 31, 2021. We refer to these individuals collectively as the “named executive officers” or “NEOs.”

The Company’s named executive officers for 2021 were:


Name			Position
Linda H. Apsey			President and Chief Executive Officer
Gretchen L. Holloway			Senior Vice President and Chief Financial Officer
Jon E. Jipping			Executive Vice President and Chief Operating Officer
Christine Mason Soneral			Senior Vice President, General Counsel, Secretary and Chief Compliance Officer
Krista Tanner			Senior Vice Present and Chief Business Unit Officer

Executive Summary

The Governance and Human Resources Committee (the “Committee”) is responsible for determining the compensation of our NEOs and administering the plans in which the NEOs participate. The goals of our compensation system are to attract first-class executive talent in a competitive environment and to motivate and retain key employees who are crucial to our success by rewarding Company and individual performance that promotes long-term sustainable growth and increases shareholder value. The key components of our NEOs' compensation package include base salary, annual cash incentive bonuses, long-term equity incentives, as well as certain perquisites and other benefits. In determining the amount of NEO compensation, we consider competitive compensation practices of other utilities and similarly sized organizations, the executive's individual performance against objectives, the executive's responsibilities and expertise, and our performance in relation to annual goals that are designed to strengthen and enhance our value.

The Committee made the following decisions with regard to executive compensation in 2021:

•Base salary increases. Base salary increases were provided to each of our NEOs in 2021 to reward individual performance and to remain competitive and aligned with market.

•Annual cash incentive bonuses. The NEOs earned cash incentive bonuses for 2021 performance of approximately 163% of target. This was based on achieving 100% of the performance targets established under the annual corporate performance bonus plan in early 2021 and achievement of certain performance factors which resulted in a bonus multiplier of 1.63. See “Compensation Discussion and

Table of Contents

Analysis - Key Components of Our NEO Compensation Program - Annual Corporate Performance Bonus.”

•Long-term equity incentives. We granted long-term equity incentive awards to our NEOs in January 2021. Total award opportunities were set as a percentage of base salary and delivered one-third in the form of SBUs and two-thirds in the form of PBUs.

Overview and Philosophy

The objectives of our compensation program are to attract first-class executive talent in a competitive environment and to motivate and retain key employees who are crucial to our success by rewarding Company and individual performance that promotes long-term sustainable growth and increases shareholder value by:

•Performing best-in-class utility operations;

•Improving reliability, reducing congestion, and facilitating access to generation resources; and

•Utilizing our experience and skills to seek and identify opportunities to invest in needed transmission and to optimize the value of those investments.

Our compensation program is designed to motivate and reward individual and corporate performance. Our compensation philosophy is to:

•Provide for flexibility in pay practices to recognize our unique position and growth proposition;

•Use a market-based pay program aligned with pay-for-performance objectives;

•Leverage incentives, where possible, and align long-term equity incentive awards with improvements in our financial performance and shareholder value;

•Provide benefits through flexible, cost-effective plans while taking into account business needs and affordability; and

•Provide other non-monetary awards to recognize and incentivize performance.

Risk and Reward Balance

When reviewing the compensation program, the Committee considers the impact of the program on the Company’s risk profile. The Committee believes that the compensation program has been structured with the appropriate mix and design of elements to provide strong incentives for executives to balance risk and reward, without excessive risk taking.

The Committee engaged FW Cook, its independent compensation consultant, to conduct an annual comprehensive compensation program risk assessment. In July 2021, FW Cook reviewed the attributes and structure of our executive compensation programs for the purpose of identifying potential sources of risk within the program design. The review covered compensation plan design and administration/governance risk.

Based on its own analysis and a report from FW Cook concluding that the Company’s compensation programs do not create risks that are reasonably likely to have a material adverse impact on the Company, the Committee concluded that none of our compensation programs and features contain elements that create material risk to the Company. Risk mitigating factors with respect to the Company’s compensation programs included a market competitive pay mix, the linking of pay to performance through annual cash bonus and long-term equity incentive plans, caps on annual cash bonus and long-term equity incentive plan payouts, various performance measures that are both financially and operationally focused, stock ownership guidelines, prohibition on hedging and pledging, oversight by an independent committee of directors, regular review of NEO tally sheets and engagement of an independent compensation consultant.

Benchmarking and Relationship of Compensation Elements

Benchmarking. We reviewed market competitive target pay levels from two distinct market samples, utility and general industry data, as reflected in published surveys. FW Cook compiled data for the following components of compensation — base salary, target annual cash bonus incentive and target long-term incentive, as well as target total cash compensation and target total direct compensation. Position-specific market target pay levels are reviewed for utility-specific data from the Willis Towers Watson Energy Services Executive Compensation Survey and general industry data from the Willis Towers Watson General Industry Executive

Table of Contents

Compensation Survey. The energy services data is used as our primary source with the general industry data provided as an additional reference point for positions other than those specific to the utility industry. The market data were aged and size-adjusted to correspond to our adjusted revenue scope. The adjusted revenue scope accounts for our unique business model and reflects the competitive incremental revenue that would normally be embedded in rates to reflect a typical cost of goods sold factor.

Our compensation strategy is to target compensation at the median (50th percentile) of the energy services benchmark data, plus or minus 20%, based on consideration of individual characteristics (performance, experience, etc.), internal equity and other factors. The Committee adopted this strategy in October 2019. In November 2020, the Committee reviewed the benchmarking study conducted by its independent consultant comparing NEO target total direct compensation, which is the sum of base salary, target annual incentives and target long-term incentives, to the 25th, 50th and 75th percentile survey data to assess the market competitiveness of our compensation opportunities. Overall, the study found target total direct compensation provided to our NEOs is at the high end of, and in some cases exceeds, the targeted competitive position. Current positioning reflects median base salaries and above median target bonus and long-term equity incentive opportunities. The Committee continues to monitor and balance competitive practices, talent needs and cost considerations when setting compensation.

Use of Tally Sheets. The Committee reviews tally sheets, every other year, as prepared by management to facilitate its assessment of the total annual compensation of our NEOs. The tally sheets contain annual cash compensation (salary and bonuses), long-term equity incentives, benefit contributions and perquisites. In addition, the tally sheets include retirement program balances, outstanding vested and unvested equity values and potential severance and termination scenario values.

Pay Review Process. In addition to the Committee’s benchmarking analysis, our CEO reviewed and examined market survey compensation levels and practices, as well as individual responsibilities and performance, our compensation philosophy and other related information to develop proposed compensation for each of our NEOs, other than herself. Ms. Apsey evaluated the performance of the NEOs, other than herself, and made recommendations on their salaries, target cash bonus incentive levels and long-term equity incentive awards. The Committee considered these recommendations in its decision making and conferred with FW Cook to understand the impact and result of any such recommendations. The Committee uses market data from FW Cook and makes recommendations on Ms. Apsey’s salary, cash bonus incentive targets and long-term equity incentive awards to the Board of Directors. The Board of Directors (other than Ms. Apsey) evaluates Ms. Apsey’s performance and considers the Committee’s recommendations in its decision making.

The Committee reviewed and considered each element of compensation and the resulting target total direct compensation, along with the objectives of our compensation program, the input of the CEO and the market data to set the 2021 target pay levels. The Committee did not determine the mix of compensation elements using a pre-set formula. In setting executive compensation levels, the Committee retained full discretion to consider or disregard data collected through benchmarking studies. In addition to the market data, compensation decisions also considered individual and Company performance, retention concerns, the importance of the position, internal equity and other factors.

Key Components of Our NEO Compensation Program

The key components of our executive compensation program are discussed below.

•Base Salary — provides sufficient competitive pay to attract and retain experienced and successful executives.

•Cash Bonus Incentive — encourages and rewards contributions to our annual corporate performance goals.

•Long Term Equity Incentives — encourages a multi-year focus on performance, rewards building long-term shareholder value and helps retain NEOs.

The other elements of our executive compensation program are discussed below under the heading “Other Components of Our Executive Compensation Program” which summarize the benefit programs that are available to our NEOs.

Table of Contents

Base Salary

The Committee annually reviews and approves the base salaries, and any adjustments thereto, of the NEOs. In making these determinations, the Committee considers the executive’s job responsibilities, individual performance, leadership and years of experience, the performance of the Company, the recommendation of the CEO (except for the base salary of the CEO) and the target total direct compensation package as well as the benchmarking analysis conducted by its advisor.

The 2021 base salaries for the NEOs, including any year-over-year change, were:


NEO	2020 Base Salary		2021 Base Salary		Percent Increase
Linda H. Apsey	$	816,000	$	840,500	3.0	%
Gretchen L. Holloway	397,800		411,700		3.5	%
Jon E. Jipping	585,800		597,500		2.0	%
Christine Mason Soneral	393,900		399,800		1.5	%
Krista Tanner	339,600		354,900		4.5	%

Ms. Tanner’s higher percentage increase reflects her expanding role and responsibilities.

Annual Corporate Performance Bonus

Early each year, the Committee approves our annual corporate performance bonus plan goals and targets, which are based on key Company objectives relating to operational excellence and superior financial performance. The corporate performance goals and targets were designed to align the interests of customers, the shareholder and management, and encourage teamwork and coordination among all of our executives and employees with a common focus on the growth and success of the Company.

The annual corporate performance bonus plan goals were individually weighted. Weights were assigned to each goal based on areas of focus during the year and difficulty in achieving target performance. Weights were also assigned so that there was a balance between operational and financial goals. Each goal operated independently, and, for most goals, there was not a range of acceptable performance; if a goal was not achieved, there was no payout for that goal. Where performance goals were stated in a range, the threshold goals were generally expected to be achieved while the maximum goals were considered “stretch” goals with lower expectation of achievement. The bonus goal targets were designed to be challenging to meet, while remaining achievable.

For 2021, the ACBP consisted of four primary measurement categories: Financial, Safety & Compliance, System Performance and Capital Project Plan. Financial goals, representing 20%, plus Safety & Compliance, representing 20%, determined 40% of the target bonus opportunity, while System Performance, representing 30%, and Capital Project Plan, representing 30%, determined the remaining 60% of the target bonus opportunity. This reflected the inherent importance of driving operational performance, reliability and needed investment in our transmission system for the benefit of our customers.

Target levels for the corporate performance goals were determined based on our annual and long-term strategic plans, historical performance, expectations for future growth and desired improvement over time. Our safety, operations and security goals were established to deliver high performance in core company operations. Benchmarks and metrics were used in connection with these goals to establish a level of performance in the top decile or quartile within our industry. Likewise, our infrastructure protection goals led to the deployment of industry leading practices resulting in a generally enhanced security posture.

Corporate performance goal criteria approved by the Committee for 2021, the rationale for the target goal (in some cases in relation to the prior year target) and actual bonus results, were as set forth below.

Table of Contents

Financial goals represented 20% of the total maximum annual bonus target and included specific measures for Non-Field Operation and Maintenance Expense and Net Income.

Category

Goal

Rationale for Goal

Rationale for Target Goal

Potential Payout

2021 Results

Actual Payout

Financial

20% Maximum Potential Payout

Non-field Operation and Maintenance Expense and General and Administrative Expenses

Controlling general and administrative expenses is an important part of controlling rates charged to transmission customers.

Target is consistent with the approach used in 2020 and based on the 2021 Board-approved budget.

Non-Field O&M and G&A expense at or under budget of $168M.

$142M

10%

Adjusted Net Income (1)

Represents the Company’s financial performance as it reflects a true measure of earnings contributions from our Regulated Operating Subsidiaries.

Target based on the 2021 Board-approved budget.

Adjusted Net Income at or above $504M to achieve 10%;
Adjusted Net Income at or above $479M to achieve 5%.

5% - 10%

$518M

10%

Total

20%

Table of Contents

Safety & Compliance goals represented 20% of the total maximum annual bonus target and included specific measures for Lost Time, Recordable Incidents and Infrastructure Protection.


Category	Goal	Rationale for Goal	Rationale for Target	Potential Payout		2021 Results	Actual Payout
Safety & Compliance 20% Maximum Potential Payout	Safety as measured by lost time	Maintaining the safety of our employees and contractors is a core value and is at the foundation of our success.	Target number of incidents remained the same as prior years and was based on industry top decile performance, which reflects an aggressive view and philosophy on the importance of safety. 2 or fewer lost work day cases for injuries to Company employees and specified contract employees.	5	%	0	5%
	Safety as measured by recordable incidents	Maintaining the safety of our employees and contractors is a core value and is at the foundation of our success.	Target number of incidents unchanged from prior year and was based on industry top decile performance, which reflects an aggressive view and philosophy on the importance of safety. 8 or fewer recordable incidents for injuries to Company employees and specified contract employees.	5	%	1	5%
	Infrastructure Protection	Maintaining cyber and physical security is critical to ensuring system reliability and ongoing operations.	Goal focused on implementing updated security objectives. Emphasized securing our information systems and physical space, helping protect our most important assets. Implementation of the 2021 Cyber Plan and Physical Security Plan, as presented to and approved by the Board of Directors, implementation of each Plan worth 5%.	10	%	Completed	10%
Total				20	%		20	%

Table of Contents

System Performance goals represented 60% of the total maximum annual bonus target and included specific measures for System Outages, Maintenance Plans and Capital Project Plan.


Category	Goal	Rationale for Goal	Rationale for Target	Potential Payout		2021 Results	Actual Payout
System Performance and Capital Project Plan 60% Maximum Potential Payout	Outage frequency	Reducing and limiting system outages are critical to ensuring system reliability.	Target unchanged from prior year for ITCTransmission, reduced from prior year for METC and ITC Midwest; all targets aligned with industry benchmark data. Number of Forced, Sustained Line Outages, excluding the "External" cause classification, for: ITCTransmission (13 or fewer, representing top decile performance); METC (23 or fewer, representing top decile performance); ITC Midwest (59 or fewer, representing top decile performance, no more than 48 at the 69kV level representing top quartile performance.); Each target is worth 5%.	15	%	ITCTransmission - 12 METC - 15 ITC Midwest - 47/36	15%
	Field Operation and Maintenance Plan	Performing necessary preventive maintenance is critical to ensuring system reliability.	Target is reflective of goal to complete the normal maintenance schedule of high priority maintenance activities. Complete high priority 2021 Field O&M Initiatives for: ITCTransmission (15) METC (13) ITC Midwest (10) Each target worth 5%. Payout reduced by 5% if not at or under Field O&M overall maintenance budget of $92M.	15	%	All high priority Field O&M initiatives completed under budget at $89M	15%
	Capital Project Plan	Performing necessary system upgrades is critical to ensuring system reliability, providing a robust transmission grid and delivering financial performance.	Target is based on accrued capital investment. The maximum payout represents the risk-adjusted capital investment plan for 2021, with a threshold level also established. Complete $751M of the 2021 Capital Project Plan to achieve 30%; Complete $711M to achieve 15%.	15 - 30%		$876M	30%
				60	%		60%

Total Bonus (as a percent of target bonus level)				100	%		100%

____________________________

(1)We utilize adjusted net income as a criterion in measuring achievement of financial goals for our annual corporate performance bonus. This non-GAAP financial measure reconciles to net income of our Regulated Operating Subsidiaries with adjustments under $1 million.

Table of Contents

Additionally, our executives, including the NEOs, are eligible for an executive bonus multiplier. To further motivate management to provide value to the shareholder, we include a performance factor under which their ACPB payouts may be increased for outperformance by as much as 100% based on multiple measures, as follows:

Measure

Threshold

Maximum

Achievement

Multiplier

Weight

Result

Capital Project Plan

$790M

$853M

$876M

2.00x

30%

0.60x

Adjusted Consolidated Net Income (1)

$398M

$418M

$407M

1.50x

30%

0.45x

Strategic Plan Objectives

Create 6 Objectives

Achieve 4 Objectives

Achieved 1 Objective

1.25x

30%

0.38x

Inclusion & Diversity Plan

Create Plan

Achieve 5 Goals

Achieved 5 Goals

2.00x

10%

0.20x

Bonus Multiplier

1.63x

____________________________

(1)We utilize adjusted consolidated net income as a criterion in measuring achievement of financial goals for the executive bonus multiplier. This non-GAAP financial measure reconciles to consolidated net income of ITC Holdings as follows:


(In millions of USD)	2021
Net Income	$	406
Adjustments	1
Adjusted Consolidated Net Income	$	407

Each measure has an established scale, which includes a threshold level and below equating to a 1.00x multiplier, having no impact on the bonus award, to a maximum of 2.00x, which would increase the bonus by 100% to a maximum of 200% of target. Achievement against performance scales related to each of the above metrics produced an executive bonus multiplier of 1.63x. This performance factor was applied to each executive’s ACPB factor of 100% to produce a final payment of approximately 163% of target.

Bonuses are based on a target bonus, which for each executive is a percentage of his or her base salary. The Committee considers each individual’s job responsibilities and the results of its benchmarking analysis when determining the base bonus percentage for the executive officers, including the NEOs, which we refer to as the “target bonus levels.” Target bonus levels for 2021 were 100% of base salary for each NEO.

Long-Term Incentive

The Committee provides and maintains a long-term equity incentive program under the 2017 Omnibus Plan, the Executive Omnibus Plan and the Fortis Inc. 2020 Restricted Share Unit Plan. In February 2021, the Committee approved grants of SBUs and PBUs to the NEOs, based on our CEO’s recommendation (except for grants to the CEO), and also on the Committee’s assessment of the performance of the Company and the executive. Award opportunities for the NEOs were provided in a mix of PBUs (weighted 67%) and SBUs (weighted 33%). The PBUs can be earned for results in two equally-weighted measures, Total Shareholder Return (relative to Fortis’ peer group) and ITC cumulative consolidated net income, over the three-year performance period. The PBU metrics were selected as Total Shareholder Return aligns with the Fortis shareholder experience and cumulative consolidated net income measures our sustained growth (organic and development), cost management and efficiency. Each unit is generally equivalent to one share of Fortis stock (as traded on the Toronto Stock Exchange) and earned PBU units are payable in cash and earned SBU units are payable in cash or Fortis common stock. Awards to the CEO were also presented to the Board of Directors by the Committee and ratified by the Board of Directors (other than the CEO). The amounts and more detailed terms of the 2021 SBU and PBU grants made under the Fortis Inc. 2020 Restricted Share Unit Plan and the Executive Omnibus Plan are described in the narrative following the Grants of Plan-Based Awards Table. The awards were designed to reward, motivate and encourage long-term performance, act as a retention mechanism, and further align the interests of the NEOs with the interests of the Fortis shareholders. Total value for the award for each grantee was determined based on a percentage of salary. For the NEOs, when the 2021 awards were made, the award values were targeted to be:

Table of Contents


NEO	Grant Value Percent of Salary
Ms. Apsey	250	%
Ms. Holloway	175	%
Mr. Jipping	175	%
Ms. Mason Soneral	175	%
Ms. Tanner	175	%

In determining the size of grants under the long-term incentive program and the award mix, the Committee considered market practice, the recommendation of the CEO (with respect to grants other than to the CEO) in light of comparisons to benchmarking data, expense to the Company and the practice of other U.S. Fortis subsidiary companies.

Other Components of Our Executive Compensation Program

Pension Benefits. As is common in our industry and as established pursuant to our initial formation requirements included in the acquisition agreement with DTE Energy for ITCTransmission, we maintain a tax-qualified defined benefit retirement plan for eligible employees, comprised of a traditional pension component and a cash balance component. All employees, including the NEOs, participate in either the traditional component or the cash balance component. We have also established a supplemental nonqualified, noncontributory retirement benefit plan for selected management employees: the Executive Supplemental Retirement Plan, or ESRP, in which all of the NEOs participate. This plan provides for benefits that supplement those provided by our qualified defined benefit retirement plan. Benefits payable to the NEOs pursuant to the retirement plans are set by the terms of those plans. The Committee exercises no regular discretionary authority in the determination of benefits. The retirement plans may be modified, amended or terminated at any time, although no such action may reduce a NEO’s earned benefits. See “Pension Benefits” for information regarding participation by the NEOs in our retirement plans as well as a description of the terms of the plans.

Benefits and Perquisites. The NEOs participate in a variety of benefit programs, which are designed to enable us to attract and retain our workforce in a competitive marketplace. These programs include our Savings and Investment Plan, which consists of an employee deferral contribution component and an employer safe-harbor matching contribution component.

Our NEOs are provided a limited number of perquisites in addition to benefits provided to our other employees. The purpose of these perquisites is to minimize distractions from the NEOs’ attention to important Company initiatives, to facilitate their access to work functions and personnel, and to encourage interactions among NEOs and others within professional, business and local communities. NEOs are provided perquisites such as auto allowance, financial, estate and legal planning, income tax return preparation, annual physical, club memberships, and personal liability insurance. Additionally, we own aircraft to facilitate the business travel schedules of our executives and other employees, particularly to locations that do not provide efficient commercial flight schedules. Ms. Apsey and guests who travel with her are permitted to travel for personal business on our aircraft, with an annual maximum of 50 flight hours for such personal travel. Ms. Apsey incurs imputed income for all guests and herself for personal travel in the amount of the incremental cost to the Company of such travel.

We purchase tickets to various sporting, civic, cultural, charity and entertainment events. We use these tickets for business development, partnership building, charitable donations and community involvement. If not used for business purposes, we may make these tickets available to employees, including the NEOs, as a form of recognition and reward for their efforts. Because such tickets have already been purchased, we do not believe that there is any aggregate incremental cost to the Company if a NEO uses a ticket for personal purposes.

None of the NEOs are reimbursed for income taxes associated with the value of the perquisites. The Committee continues to monitor and review the Company’s perquisite program. Perquisites are further discussed in footnote 4 to the “Summary Compensation Table.”

Potential Severance Compensation. Pursuant to their employment agreements, each NEO is entitled to certain benefits and payments upon a termination of his or her employment. Benefits and payments to be

Table of Contents

provided vary based on the circumstances of the termination. We believe it is important to provide these protections in order to ensure our NEOs will remain engaged and committed to us during an acquisition of the Company or other transition in management. See “Employment Agreements and Potential Payments Upon Termination or Change in Control” for further detail on these employment agreements, including a discussion of the compensation to be provided upon termination or a change in control.

Stock Ownership Policy

The Board believes that having a share ownership policy is a key element of strong corporate governance and aligns the interests of management with the interests of Fortis shareholders. Under these guidelines, which became effective January 1, 2020, officers, including NEOs, must achieve and maintain the applicable level of Fortis stock ownership by the fifth anniversary of when the guidelines first became applicable to the individual. The current levels are as follows:


Position			Ownership Level
Chief Executive Officer			2x annual base salary
Executive and Senior Vice Presidents			1.5x annual base salary
Vice Presidents			1x annual base salary

The securities that qualify for the purpose of determining compliance with the policy are common shares of Fortis stock and the executive’s outstanding SBU awards. Share ownership levels include Fortis securities beneficially owned: (i) in a trust; (ii) by the executive’s spouse; and (iii) by the executive’s minor children. Any executive that fails to maintain minimum stock ownership under these guidelines will not be eligible for future equity-based compensation awards until the later of (i) the end of the one-year period commencing on the date of such failure or (ii) such time as the executive is again in compliance with the guidelines. As of December 31, 2021, each of the NEOs was in compliance with this policy.

Governance and Human Resources Committee Report

The Governance and Human Resources Committee has reviewed and discussed this Compensation Discussion and Analysis with management and, based on the review and discussions with management, has recommended to the Board of Directors that the Compensation Discussion and Analysis be included in this report.

DEBORA M. FRODL

RONNIE D. HAWKINS, JR.

DAVID G. HUTCHENS

JAMES P. LAURITO

A. DOUGLAS ROTHWELL

Table of Contents

Summary Compensation

The following table provides a summary of compensation paid or accrued by the Company and its subsidiaries to or on behalf of the NEOs for services rendered by them during each of the last three calendar years, as required by applicable SEC rules and regulations. The material terms of plans and agreements pursuant to which certain items set forth below were paid are discussed elsewhere in Compensation of Executive Officers and Directors.

Summary Compensation Table


Name	Year	Salary ($)		Stock Awards ($) (1)		Non-Equity Incentive Plan Compensation ($) (2)		Change in Pension Value & Non-qualified Deferred Compensation Earnings ($)(3)		All Other Compensation ($) (4)		Total ($)
(a)	(b)	(c)		(e)		(f)		(g)		(h)		(i)
Linda H. Apsey, President & CEO	2021	$	843,732	$	2,086,868	$	1,370,015	$	184,341	$	100,652	$	4,585,608
	2020	819,630		2,036,614		1,151,376		359,039		84,625		4,451,284
	2019	794,692		2,061,860		1,352,000		322,636		55,516		4,586,704

Gretchen L. Holloway SVP & CFO	2021	413,284		715,560		671,071		101,514		36,871		1,938,300
	2020	399,570		695,003		561,296		181,670		36,936		1,874,475
	2019	388,115		703,598		659,100		147,032		36,362		1,934,207

Jon E. Jipping, EVP & COO	2021	599,799		1,038,492		973,925		211,095		38,499		2,861,810
	2020	589,347		1,023,422		826,564		522,326		38,199		2,999,858
	2019	578,000		1,046,405		980,200		568,493		38,169		3,211,267

Christine Mason Soneral, SVP, General Counsel, Secretary & CCO	2021	401,377		694,865		651,674		94,802		38,746		1,881,464
	2020	396,285		688,169		555,793		200,948		35,950		1,877,145
	2019	389,469		703,598		659,100		170,742		36,500		1,959,409

Krista Tanner, SVP & CBUO	2021	356,265		616,837		578,487		94,877		36,113		1,682,579
	2020	339,797		593,288		479,176		123,653		34,620		1,570,534

____________________________

(1) The amounts reported in this column represent the grant date fair value of PBU awards and SBU awards granted to the NEOs under the 2017 Omnibus Plan, the Executive Omnibus Plan and the Fortis Inc. 2020 Restricted Share Unit Plan in accordance with FASB Accounting Standards Codification Topic 718, or ASC 718.

The grant date fair value of the SBU awards is based on the applicable share price on the grant date. The grant date fair value of the PBU awards is based on the applicable share price on the grant date and the payout of the performance (which approximates target achievement), and market conditions. The SBU awards and PBU awards are liability awards, subject to remeasurement through the vesting date, and settled in cash, see “Grants of Plan-Based Awards.” The value of the 2021 PBU awards at the grant date assuming that the highest level of performance conditions will be achieved are as follows:


Ms. Apsey	$	2,782,565
Ms. Holloway	954,115
Mr. Jipping	1,384,709
Ms. Mason Soneral	926,514
Ms. Tanner	822,480

(2) The amounts reported in this column include cash awards tied to the achievement of annual Company performance goals under our annual corporate performance bonus plan in effect for each of 2021, 2020 and 2019. For information regarding the corporate goals for 2021, see “Compensation Discussion and Analysis - Key Components of Our NEO Compensation Program - Annual Corporate Performance Bonus."

(3) All amounts reported in this column pertain to the tax-qualified defined benefit pension plan and the supplemental nonqualified, noncontributory retirement plan maintained by the Company. None of the income on nonqualified deferred compensation was above-market or preferential. Variations in the amounts

Table of Contents

from year to year reflect an additional year of service and pay changes used in the accrued benefit, as well as changes in assumptions on which the benefits are calculated, for which the formula has not been materially revised. The discount rate used for the present value of accumulated benefits was 3.44% in 2019, 2.74% for 2020 and 3.01% for 2021. In 2020, the mortality assumption was changed at year-end 2020 from the Adjusted RP-2014 table projected for future mortality improvements with MP-2017 generational scale to the Pri-2012 tables with MP-2020 mortality improvement scale.

(4) All Other Compensation includes amounts for auto allowance, financial, estate and legal planning, income tax return preparation, annual physical, club memberships, event tickets, personal liability insurance, personal use of company aircraft and for other benefits such as Company contributions on behalf of the NEOs pursuant to the matching component of the Savings and Investment Plan. Perquisites have been valued for purposes of these tables on the basis of the aggregate incremental cost to the Company. The incremental cost of the personal use of the Company aircraft was determined based upon the Company’s expenses incurred in connection with the actual costs of maintenance, landing, parking, crew and catering and estimated fuel costs relating to Ms. Apsey’s hours of use of the aircraft. Fuel expense was determined by calculating the average fuel cost for the month and the average amount of fuel used per hour. These benefits and perquisites for 2021, 2020 and 2019 are itemized in the table below as required by applicable SEC rules.


Name	Year	401(k) Match		Personal Use of Company Aircraft		Other Benefits		Total
Linda H. Apsey	2021	$	17,400	$	54,461	$	28,791	$	100,652
	2020	17,100		40,440		27,085		84,625
	2019	16,800		19,777		18,939		55,516

Gretchen L. Holloway	2021	15,550		—		21,321		36,871
	2020	15,450		—		21,486		36,936
	2019	15,100		—		21,262		36,362

Jon E. Jipping	2021	17,400		—		21,099		38,499
	2020	17,100		—		21,099		38,199
	2019	16,800		—		21,369		38,169

Christine Mason Soneral	2021	15,550		—		23,196		38,746
	2020	15,450		—		20,500		35,950
	2019	15,100		—		21,400		36,500

Krista Tanner	2021	14,659		—		21,454		36,113
	2020	14,120		—		20,500		34,620

Table of Contents

Grants of Plan-Based Awards

The following table sets forth information concerning each grant of an award made to a NEO during 2021.


Name	Grant Date	Award Type	Estimated Future Payouts Under Non-Equity Incentive Plan Awards						Estimated Future Payouts Under Equity Incentive Plan Awards			All Other Stock Awards: Number of Shares of Stock or Units (#)	Grant Date Fair Value of Stock and Option Awards ($)(3)
			Threshold ($)		Target ($)(1)		Maximum ($)(1)		Threshold (#)	Target (#)(2)	Maximum (#)(2)
(a)	(b)		(c)		(d)		(e)		(f)	(g)	(h)	(i)	(j)
Linda H. Apsey	1/1/2021	SBU	$	—	$	—	$	—	—	—	—	17,036	$	695,586
	1/1/2021	PBU	—		—		—		17,038	34,075	68,150	—	1,391,282
		ACPB	—		840,000		1,680,000		—	—	—	—	—

Gretchen L. Holloway	1/1/2021	SBU	—		—		—		—	—	—	5,841	238,502
	1/1/2021	PBU	—		—		—		5,842	11,684	23,368	—	477,058
		ACPB	—		411,700		823,400		—	—	—	—	—

Jon E. Jipping	1/1/2021	SBU	—		—		—		—	—	—	8,478	346,138
	1/1/2021	PBU	—		—		—		8,479	16,957	33,914	—	692,354
		ACPB	—		597,500		1,195,000		—	—	—	—	—

Christine Mason Soneral	1/1/2021	SBU	—		—		—		—	—	—	5,673	231,608
	1/1/2021	PBU	—		—		—		5,673	11,346	22,692	—	463,257
		ACPB	—		399,800		799,600		—	—	—	—	—

Krista Tanner	1/1/2021	SBU	—		—		—		—	—	—	5,035	205,597
	1/1/2021	PBU	—		—		—		5,036	10,072	20,144	—	411,240
		ACPB	—		354,900		709,800		—	—	—	—	—

____________________________

(1) The amount shown in Column (d) represents the potential payout for the ACPB based on “target bonus levels.” The amount payable assuming maximum achievement of all bonus goals, including the bonus multiplier, is set forth in column (e). Actual dollar amounts paid are disclosed and reported in the “Summary Compensation Table” as Non-Equity Incentive Plan Compensation. For more information regarding the ACPBs, see “Compensation Discussion and Analysis — Key Components of Our NEO Compensation Program — Annual Corporate Performance Bonus.”

(2) Payment of each PBU award is contingent on meeting performance targets based on (1) Fortis Total Shareholder Return in comparison to the Total Shareholder Return during the performance period for each of the companies that comprise the 2021 Fortis peer group and (2) cumulative consolidated net income for each fiscal year during the performance period. The performance measures are independent of each other. If threshold, target or maximum performance goals are attained in the performance period, 50%, 100% or 200% of the target amount, respectively, may be earned. If actual performance falls between threshold, target and maximum, the awards would be prorated between levels based on performance outcome. For more information regarding performance share awards, see “Grant of Plan-Based Awards - Performance-Based Unit Award Agreements.”

(3) Grant Date Fair Value consists of SBUs and PBUs awarded under the Fortis Inc. 2020 Restricted Share Unit Plan and Executive Omnibus Plan, respectively, with a grant date of January 1, 2021. The SBUs and PBUs reflected here are recorded at fair value at the date of grant, which was $40.83 per share. Share fair values were converted from Canadian Dollars to US Dollars using the “Award Conversion Rate” defined in the plans.

The Committee has established long-term incentive targets as a percentage of the base salary for each NEO in consideration of benchmarking data on total direct compensation, the importance of the NEO’s position to the success of the Company, our need to create meaningful incentives to enhance performance and the culture of teamwork that makes our company successful. The Committee did not have a pre-established targeted allocation of total direct compensation.

100

Table of Contents

The Committee had the power to award SBUs in the form of equity or cash under the Fortis Inc. 2020 Restricted Share Unit Plan and PBUs in the form of equity or cash under the Executive Omnibus Plan with the terms of each award set forth in a written agreement with the recipient. Grants made in 2021 to the NEOs were made under their respective plans pursuant to terms stated in the SBU and PBU award agreements.

Performance-Based Unit Award Agreements

The PBU award agreements entered into with each NEO on January 1, 2021 (the “PBU Grant Date”) (each a “PBU Agreement”) provide generally that the award will vest on January 1, 2024 (the “PBU Vesting Date”) to the extent one or more of the performance goals are met and if the grantee continues to be employed by the Company through the PBU Vesting Date. One-half of the Target Number of PBUs shall be related to the Fortis Total Shareholder Return goal (the “TSR goal”) and one-half of the Target Number of PBUs shall be related to the Cumulative Consolidated Net Income goal (the “CCNI goal”). The PBUs will become earned as set forth in the following table:

Measurement Category

Goal at Threshold

Shares at Threshold

Goal at Target

Shares at Target

Goal at Maximum

Shares at Maximum

Fortis Total Shareholder Return

30th percentile

50% of TSR Target Units

50th percentile

100% of TSR Target Units

85th percentile

200% of TSR Target Units

Cumulative Consolidated Net Income

99% of Target

50% of CCNI Target Units

100% of Target

100% of CCNI Target Units

103% of Target

200% of CCNI Target Units

The performance period for the award is January 1, 2021 through December 31, 2023 (the “Payment Criteria Period”). The performance measures are independent of each other; that is, if the threshold level of one performance measure is attained, units relating to that measure will be “earned” (subject to vesting as otherwise provided in the PBU Agreement) even if the threshold level of the other performance measure is not attained. The number of PBUs that are “earned” with respect to each performance measure will be prorated between levels based on performance. The Committee will have discretion to reduce the number of PBUs earned under certain circumstances.

Total Shareholder Return of Fortis will be compared to each of the companies (the “Peer Companies”) listed in the Fortis Peer Group 2021 Report excluding any company that is no longer traded on the Toronto Stock Exchange or a “national securities exchange” at the end of the Payment Criteria Period. The Peer Companies currently consist of the following 25 U.S. and Canadian public utility companies:


Alliant Energy Corporation	Emera Incorporated	PG&E Corporation
Ameren Corporation	Entergy Corporation	Pinnacle West Capital Corporation
Atmos Energy Corporation	Evergy, Inc.	PPL Corporation
Canadian Utilities Limited	Eversource Energy	Public Service Enterprise Group Inc.
CenterPoint Energy Inc.	FirstEnergy Corp.	Sempra Energy
CMS Energy Corporation	Hydro One Limited	UGI Corporation
Consolidated Edison Inc.	NiSource Inc.	WEC Energy Group, Inc.
DTE Energy Company	OGE Energy Corp.	Xcel Energy Inc.
Edison International

The Total Shareholder Return of Fortis and the Peer Companies shall be computed in U.S. dollars as follows:

A: Calculate the Market Price as of the first day of the Payment Criteria Period (if necessary, converted into U.S. dollars based on the Award Conversion Rate as defined in the Executive Omnibus Plan)

B: Calculate the Market Price as of the last day of the Payment Criteria Period (if necessary, converted into U.S. dollars based on the Award Conversion Rate)

C: Calculate the total dividends paid per share of its common stock (or equivalent security) during the Payment Criteria Period (if necessary, converted into U.S. dollars based on the Award Conversion Rate)

Total Shareholder Return = ((B - A) + C)/A

101

Table of Contents

Adjusted Consolidated Net Income for the Company for each calendar year in the Payment Criteria Period shall be equal to net income as set forth in the Company’s audited consolidated financial statements contained in its annual report on Form 10-K for such year, as adjusted for extraordinary items and changes in Return on Equity, in each case at the Committee’s discretion. Cumulative Consolidated Net Income for the Company during the Payment Criteria Period shall be the sum of the Adjusted Consolidated Net Income for each of the three years in the Payment Criteria Period. See “Compensation Discussion and Analysis - Key Components of Our NEO Compensation Program - Annual Corporate Performance Bonus" for a reconciliation of Adjusted Consolidated Net Income to Net Income.

If the grantee ceases to be employed before the PBU Vesting Date due to death, disability or “Retirement” (as defined below), and the grantee has been employed with the Company for 15 years or more, the grantee will receive, following the PBU Vesting Date, the number of PBUs to which the grantee would have otherwise been entitled if the grantee had remained employed through the PBU Vesting Date. If the grantee ceases to be employed before the PBU Vesting Date due to death, disability or Retirement, and the grantee has been employed with the Company for less than 15 years, the grantee will receive, following the PBU Vesting Date, (i) one-third of the number of PBUs to which the grantee would have otherwise been entitled if the grantee had remained an employee through the PBU Vesting Date shall be deemed to have vested on the PBU Vesting Date if termination occurred on or after the one-year anniversary of the PBU Grant Date and before the two-year anniversary of the PBU Grant Date, and (ii) two-thirds of the number of PBUs to which the grantee would have otherwise been entitled if the grantee had remained an employee through the PBU Vesting Date shall be deemed to have vested on the PBU Vesting Date if termination occurred on or after the two-year anniversary of the PBU Grant Date but before the PBU Vesting Date. If termination occurs prior to the PBU Vesting Date other than as a result of death, disability or Retirement, grantee will forfeit the award.

“Retirement” is defined to mean termination of grantee’s employment with the Company upon or after completing 10 years of service with the Company after attaining the age of 45 if the grantee has provided the Company with at least six months’ written notice of such retirement.

Upon a “Change of Control,” as defined in the Executive Omnibus Plan, all outstanding PBUs become redeemable on the effective date of the consummation of the event resulting in the Change of Control (the “Change of Control Redemption Date”). In the event of a Change of Control, the payout percentage for outstanding PBUs is the product of (i) the higher of (A) 100% of the target number of PBUs in the award or (B) the actual payout percentage based on the Committee’s assessment of performance of the payment criteria from the beginning of the Payment Criteria Period for the award through the date of the Change of Control, multiplied by (ii) a fraction, the numerator of which is the number of days elapsed in the Payment Criteria Period for the award through the date on which the Change of Control occurred and the denominator of which is the total number of days in the payment criteria period for the award.

Grantees are entitled to receive additional PBUs equal to the “dividend equivalent” when a cash dividend is paid on common shares of Fortis stock (each a “Common Share”). Such “dividend equivalent” shall be equal to a fraction where the numerator is the product of (a) the number of PBUs in the grantee’s account on the date that the dividends are paid, including PBUs previously credited as “dividend equivalents,” multiplied by (b) the dividend paid per Common Share and the denominator of which is the “Market Price” of one Common Share calculated on the date that dividends are paid, converted to U.S. dollars based on the Award Conversion Rate. All “dividend equivalent” PBUs shall have a PBU Vesting Date which is the same as the PBU Vesting Date for the PBUs in respect of which such additional PBUs are credited.

Service-Based Unit Award Agreements

The SBU award agreements entered into with each NEO on January 1, 2021 (the “SBU Grant Date”) (each a “SBU Agreement”) provide generally that, so long as the grantee remains employed by the Company, the SBUs fully vest upon the earlier of (i) January 1, 2024 (the “SBU Vesting Date”) or (ii) the grantee's death, disability or “Retirement.” If the grantee ceases to be employed before the SBU Vesting Date due to death, disability or Retirement, and the grantee has been employed with the Company for 15 years or more, the grantee will receive, the number of SBUs to which the grantee would have otherwise been entitled if the grantee had remained employed through the SBU Vesting Date. If the grantee ceases to be employed before the SBU Vesting Date due to death, disability or Retirement, and the grantee has been employed with the Company for less than 15 years, the grantee will receive a prorated number of SBUs to reflect the actual period between the

102

Table of Contents

SBU Grant Date and the date of the grantee’s death, disability or Retirement. If termination occurs prior to the SBU Vesting Date other than as a result of death, disability or Retirement, the grantee will forfeit the award.

Upon a “Change of Control,” all outstanding SBUs become redeemable on the date that is immediately prior to the Change of Control Redemption Date.

“Retirement” and “Change of Control” are defined in the same manner as defined in the description of the PBU Agreement disclosed above. Grantees are entitled to receive additional dividend equivalent SBUs in the same manner as defined in the description of the PBU Agreement disclosed above.

The SBU Agreement provides that the grantee may elect to have their SBU awards vest as common shares of Fortis Inc. stock or cash payment. If the grantee does not satisfy their share holding requirement stated in the Stock Ownership Policy, 50% of the SBU awards must settle in common shares of Fortis Inc. stock.

Outstanding Equity Awards at Fiscal Year-End

The following table provides information with respect to SBUs and PBUs that have not vested as of the end of 2021 held by the NEOs.


Name	Number of Shares or Units of Stock That Have Not Vested (#) (SBUs)	Market Value of Shares or Units of Stock That Have Not Vested ($) (SBUs) (1)		Equity Incentive Plan Awards: Number of Unearned Shares, Units or Other Rights That Have Not Vested (#) (PBUs)	Equity Incentive Plan Awards: Market or Payout Value of Unearned Shares, Units or Other Rights That Have Not Vested ($) (PBUs) (1)
(a)	(b)	(c)		(d)	(e)
Linda H. Apsey	17,617 (2)	$	850,365	70,464 (3)	$	3,401,317
	17,688 (4)	853,796		70,757(5)	3,415,454

Gretchen L. Holloway	6,012 (2)	290,187		24,046 (3)	1,160,721
	6,065 (4)	292,749		24,262 (5)	1,171,128

Jon E. Jipping	8,853 (2)	427,329		35,409 (3)	1,709,180
	8,802 (4)	424,866		35,211 (5)	1,699,658

Christine Mason Soneral	5,953 (2)	287,342		23,810 (3)	1,149,290
	5,890 (4)	284,287		23,560 (5)	1,137,249

Krista Tanner	5,132 (2)	247,731		20,527 (3)	990,821
	5,228 (4)	252,360		20,915 (5)	1,009,551

____________________________

(1)Value was determined by multiplying the number of units that have not vested by the closing price of Fortis common stock on the NYSE as of December 31, 2021 ($48.27).

(2)These unvested SBUs were granted in 2020 and generally vest on January 1, 2023. These SBU numbers include the original SBU grant plus dividend equivalent units earned.

(3)These unvested PBUs were granted in 2020 and generally vest on January 1, 2023. These PBU numbers include the original PBU grant plus dividend equivalent units earned. The award contains performance conditions established by the Committee. In order for PBUs to vest such performance conditions must be achieved. Amounts reported reflect PBU payouts as if the maximum performance goals have been achieved.

(4)These unvested SBUs were granted in 2021 and generally vest on January 1, 2024. These SBU numbers include the original SBU grant plus dividend equivalent units earned.

(5)These unvested PBUs were granted in 2021 and generally vest on January 1, 2024. These PBU numbers include the original PBU grant plus dividend equivalent units earned. The award contains performance conditions established by the Committee. In order for PBUs to vest such performance conditions must be achieved. Amounts reported reflect PBU payouts as if the maximum performance goals have been achieved.

The PBU grants made to NEOs were made pursuant to the Executive Omnibus Plan and the SBU grants

103

Table of Contents

made to NEOs were made pursuant to the Fortis Inc. Restricted Share Unit Plan. The terms of the grants are described above in the narrative discussion accompanying the “Grants of Plan-Based Awards” Table.

Stock Vested

The following table provides information with respect to SBUs and PBUs held by the NEOs that vested during 2021:


	Stock Awards
Name	Number of Shares or Units of Stock Acquired on Vesting (#)	Value of Shares or Units of Stock Realized on Vesting ($) (1)
(a)	(b)	(c)
Linda H. Apsey	22,252 (2)	$	994,825
	83,223 (3)	3,720,645

Gretchen L. Holloway	7,593 (2)	339,478
	28,399 (3)	1,269,649

Jon E. Jipping	11,293 (2)	504,896
	42,236 (3)	1,888,217

Christine Mason Soneral	7,593 (2)	339,478
	28,399 (3)	1,269,649

Krista Tanner	4,520 (2)	202,068
	16,904 (3)	755,729

____________________________

(1)Value is based on the 5-day volume weighted average price of common stock on the Toronto Stock Exchange on the vesting date, converted from Canadian Dollars to US Dollars using the “Award Conversion Rate” defined in the 2017 Omnibus Plan, which is $44.7608.

(2)Amounts reported reflect the vesting of SBUs granted March 6, 2019 and associated dividend equivalent units.

(3)Amounts reported reflect the vesting of PBUs granted March 6, 2019 and associated dividend equivalent units. The award contains performance conditions established by the Committee. The performance period ended on December 31, 2021. The Committee certified the achievement of 187% of the applicable performance goals on February 1, 2022.

Pension Benefits

The following table provides information with respect to each pension benefit plan that provides for payments or other benefits at, following or in connection with retirement. Those plans are the International Transmission Company Retirement Plan (the “Qualified Plan”) and the ESRP.

104

Table of Contents

Pension Benefits Table

Name

Plan Name

Number of Years Credited Service (#)(1)

Present Value of Accumulated Benefit ($)(2)

Payments During Last Fiscal Year ($)

(a)

(b)

(c)

(d)

(e)

Linda H. Apsey

Cash Balance Component

27.58

484,463

N/A

ESRP Shift

N/A

39,019

N/A

Total Qualified Plan

523,482

N/A

ESRP

18.83

2,299,303

N/A

Gretchen Holloway

Cash Balance Component

17.95

342,794

N/A

Total Qualified Plan

342,794

N/A

ESRP

6.91

504,904

N/A

Jon E. Jipping

Traditional Component

31.03

2,155,602

N/A

Total Qualified Plan

2,155,602

N/A

ESRP

16.92

1,824,457

N/A

Christine Mason Soneral

Cash Balance Component

14.29

336,173

N/A

Total Qualified Plan

336,173

N/A

ESRP

14.28

903,985

N/A

Krista Tanner

Cash Balance Component

7.14

156,244

N/A

Total Qualified Plan

156,244

N/A

ESRP

7.14

356,793

N/A

____________________________

(1) Credited service is estimated as of December 31, 2021 and represents the service reflected in the determination of benefits. For determining vesting, service with DTE Energy is counted for the Qualified Plan only.

For Ms. Apsey and Mr. Jipping, the credited service for the cash balance and traditional components of the Qualified Plan, respectively, includes service with DTE Energy. The Company began operations on February 28, 2003, following its acquisition of ITCTransmission from DTE Energy. As of that date, the benefits from DTE Energy’s qualified plan that had accrued, as well as the associated assets from DTE Energy’s pension trust, were transferred to the Qualified Plan. Therefore, even though DTE Energy service is included in determining the benefits under the traditional and cash balance components of the Qualified Plan, the benefits associated with this additional service do not represent a benefit augmentation, but rather a transfer of benefit liability and associated assets from DTE Energy’s qualified plan to the Qualified Plan. With respect to the ESRP, credited service includes Company service only for the period during which the NEO was an ESRP participant.

(2) The “Present Value of Accumulated Benefit” is the estimated lump-sum equivalent value measured as of December 31, 2021 (the “measurement date” used for financial accounting purposes) of the benefit that was earned as of that date. Certain benefits are payable as an annuity only, not as a lump sum, and/or may not be payable for several years in the future. The values reflected are based on several assumptions. The date at which the present values were estimated was December 31, 2021. The rate at which future expected benefit payments were discounted in calculating present values was 3.01%, the same rate used for fiscal year-end 2021 financial accounting disclosure of the Qualified Plan. The future annual earnings rate on account balances under the cash balance and ESRP shift components of the Qualified Plan, and for ESRP benefits, was assumed to be 1.94% for 2022 and 4.00% thereafter.

We assumed no NEOs would die or become disabled prior to retirement or terminate employment with us prior to becoming eligible for benefits unreduced for early retirement. The assumed retirement age for each executive was generally the earliest age at which benefits unreduced for early retirement were available under the respective plans. For the traditional component of the defined benefit plan, that age is the earlier of (1) age 58 with 30 years of service (including service with DTE Energy), or (2) age 60 with 15 years of service. For consistency, we generally use the same assumed retirement commencement age for other benefits, including benefits expressed as an account value where the concept of benefit reductions for early retirement is not meaningful. The assumed retirement benefit commencement ages were 58 for each NEO.

105

Table of Contents

Post-retirement mortality was assumed to be in accordance with the Pri-2012 mortality table projected for future mortality improvements with MP-2020 generational scale. Benefits under the traditional component of the Qualified Plan were assumed to be paid as a monthly annuity payable for the lifetime of the employee. For all other benefits, payment was assumed to be as a single lump sum, although other actuarially equivalent forms are available.

We maintain one tax-qualified noncontributory defined benefit pension plan and one supplemental nonqualified, noncontributory defined benefit retirement plan. First, we maintain the Qualified Plan, which provides funded, tax-qualified benefits up to the limits on compensation and benefits under the Internal Revenue Code. Generally, all of our salaried employees, including the NEOs, are eligible to participate.

We maintain the ESRP, in which all of our NEOs participate. The ESRP provides additional retirement benefits which are not tax qualified.

The following describes the Qualified Plan and the ESRP, and pension benefits provided to the NEOs under those plans.

Qualified Plan

There are two primary retirement benefit components of the Qualified Plan. Each NEO earns benefits from the Company under only one of these primary components.

Because our first operating utility subsidiary was acquired from DTE Energy, a component of the Qualified Plan bears relation to the DTE Energy Corporation Retirement Plan (the “DTE Plan”). Generally, persons who were participants in the “traditional component” of the DTE Plan as of February 28, 2003 (the date ITCTransmission was acquired from DTE Energy) earn benefits under the traditional component of our Qualified Plan. All other participants earn benefits under the cash balance component. Ms. Apsey also has benefits under the ESRP shift described below.

Benefits under the Qualified Plan are funded by an irrevocable tax-exempt trust. A NEO’s benefit under the Qualified Plan is payable from the assets held by the tax-exempt trust.

NEOs become fully vested in their normal retirement benefits described below with 3 years of service, including service with DTE Energy, or upon attainment of the plan’s normal retirement age of 65. If a NEO terminates employment with less than 3 years of service, the NEO is not vested in any portion of his or her benefit.

Traditional Component of Qualified Plan

Mr. Jipping participates in the traditional component of the Qualified Plan. The benefits are determined under the following formula, stated as an annual single life annuity payable in equal monthly installments at the normal retirement age of 65: 1.5% times average final compensation times credited service up to 30 years, plus 1.4% times average final compensation times credited service in excess of 30 years. Credited service includes service with DTE Energy. Although benefits under the formula are defined in terms of a single life annuity, other annuity forms (e.g., joint and survivor benefits) are available that have the same actuarial value as the single life annuity benefit. The benefits are not payable in the form of a lump sum.

Average final compensation is equal to one-fifth of the NEO’s salary (excluding any bonuses or special pay) during the 260 weeks of credited service, not necessarily consecutive, at any time during the NEO’s employment that results in the highest average.

Benefits provided under the Qualified Plan are based on compensation up to a compensation limit under the Internal Revenue Code (which was $290,000 in 2021 and is indexed in future years). In addition, benefits provided under the Qualified Plan may not exceed a benefit limit under the Internal Revenue Code (which was $230,000 payable as a single life annuity beginning at normal retirement age in 2021).

106

Table of Contents

NEOs may retire with a reduced benefit as early as age 45 after 15 years of credited service. If a NEO has 30 years of credited service at retirement, the benefit that would be payable at normal retirement age is reduced for commencement ages below 58. The percentage of the normal retirement benefit payable at sample commencement ages is as follows:

Age 58 and older: 100%

Age 55: 85%

Age 50: 40%

If a NEO has less than 30 years but more than 15 years of credited service at retirement, the benefit that would be payable at normal retirement age is reduced for commencement ages below age 60. The percentage of the normal retirement benefit payable at sample commencement ages is as follows:

Age 60 and older: 100%

Age 55: 71%

Age 50: 40%

If a NEO terminates employment prior to earning 15 years of credited service, the annuity benefit may not commence prior to attaining age 65. If the NEO terminates employment after earning 15 years of credited service but below age 45, the benefit may commence as early as age 45. The percentage of the normal retirement benefit payable at sample commencement ages is as follows:

Age 65 and older: 100%

Age 60: 58%

Age 55: 36%

Age 50: 23%

Mr. Jipping’s annual accrued benefit payable in monthly installments as an annuity for his lifetime, beginning at age 60, is approximately $130,000. He is fully vested.

Cash Balance Component of Qualified Plan

Mses. Apsey, Holloway, Mason Soneral and Tanner participate in the cash balance component of the Qualified Plan. The benefits are stated as a notional account value.

Each year, a NEO’s account is increased by a “contribution credit” equal to 7% of pay. For this purpose, pay is equal to base salary plus bonuses and overtime up to the same compensation limit as applied under the traditional component of the Qualified Plan ($290,000 in 2021). Each year, a NEO’s account is also increased by an “interest credit” based on 30-year Treasury rates.

Upon termination of employment, a vested NEO may elect full payment of his or her account. Alternate forms of benefit (e.g., various forms of annuities) are available as well that have the same actuarial value as the account.

Mses. Apsey, Holloway, Mason Soneral and Tanner are entitled to immediate payment of their account value on termination of employment, even if before normal retirement age. Ms. Apsey’s estimated account value as of year-end 2021 is approximately $467,000, Ms. Holloway’s is approximately $315,000, Ms. Mason Soneral’s is approximately $315,000, Ms. Tanner is approximately $145,000.

The ESRP provides notional account accruals similar to the cash balance component of the Qualified Plan. The “compensation credit” to the NEO’s notional account, analogous to the contribution credit in the cash balance component of the Qualified Plan, is equal to 9% of base salary plus actual bonus earned under the Company’s ACPB. The “investment credit,” analogous to the interest credit in the cash balance component of the Qualified Plan, is similarly based on 30-year Treasury rates.

The ESRP shift benefit is an amount that would otherwise be payable from the ESRP, but is instead being paid from the Qualified Plan, subject to applicable qualified plan legal limits on the ability to discriminate in favor of highly paid employees. The NEO’s cash balance account is increased by any amounts shifted from the

107

Table of Contents

ESRP. The purpose of the benefit is to provide the NEO and the Company the tax advantages of providing benefits through a tax qualified plan.

Ms. Apsey has received ESRP shift additions to her Qualified Plan cash balance account. There was no shift of compensation credits for 2021, although previous shifts have continued to earn interest credits. As of year-end 2021, her ESRP shift balance was approximately $38,000.

Executive Supplemental Retirement Plan

The ESRP is a nonqualified retirement plan. Only selected executives participate, including all our NEOs. The purpose of the ESRP is to promote the success of the Company and its subsidiaries by providing the ability to attract and retain talented executives by providing such designated executives with additional retirement benefits.

The ESRP resembles the cash balance component of the Qualified Plan in that benefits are expressed as a notional account value and the vested account balance is payable as a lump sum on termination of employment, although an installment option of equivalent value is also available.

Each year, a NEO’s account is increased by a “compensation credit” equal to 9% of pay. For this purpose, pay is equal to base salary plus any bonus under the Company’s ACPB. There is no limit on compensation that may be taken into account as in the Qualified Plan. Each year, a NEO’s account is also increased by an “investment credit” equal to the same earnings rate as the interest credit in the cash balance component of the Qualified Plan, based on 30-year Treasury rates.

The plan has been in effect since March 1, 2003. Vesting occurs at 20% for each year of participation. All of our NEOs are fully vested.

As noted above in the description of the Qualified Plan, a portion of the ESRP account balance may be shifted to the cash balance component of the Qualified Plan each year, as permitted under the rules for qualified plans. Such a shift allows the NEOs to become immediately vested in the account values shifted and confers certain tax advantages to the NEOs and us. As of December 31, 2021, the ESRP account values, net of the amounts shifted to the Qualified Plan, are as follows:


Ms. Apsey	$	2,214,807
Ms. Holloway	464,356
Mr. Jipping	1,823,110
Ms. Mason Soneral	846,109
Ms. Tanner	329,977

The ESRP is funded with a Rabbi Trust, which we cannot use for any purpose other than to satisfy the benefit obligations under the ESRP, except in the event of the Company’s bankruptcy, in which case the assets are available to general creditors.

Nonqualified Deferred Compensation

We maintain the Executive Deferred Compensation Plan under which nonqualified deferred compensation is permissible. Only selected officers of the Company, including the NEOs, are eligible to participate in this plan. NEOs are allowed to defer up to 100% of their salary and bonus. Investment earnings are based on the various investment options available under the plan and are selected by the individual NEOs. Distributions will generally be made at the NEO’s termination of employment for any reason. Mr. Jipping elected to participate in 2020 and his deferral was withheld in 2021. Mr. Jipping also elected to participate in 2021, and his deferral will be made in 2022 due to his 2021 bonus payment occurring in 2022. Mr. Jipping is the only NEO that participated in the Executive Deferred Compensation Plan in 2021. The following table reports amounts contributed in 2021, together with aggregate earnings on contributions and withdrawals or distributions on contributions in 2021, under the plan.

108

Table of Contents


Name (in millions of USD)	Executive Contributions in Last Fiscal Year (1)		Registrant Contributions in Last Fiscal Year		Aggregate Earnings in Last Fiscal Year		Aggregate Withdrawals/Distributions		Aggregate Balance at Last Fiscal Year End (2)
Jon E. Jipping	$	800,226	$	—	$	412,880	$	—	$	3,214,206

____________________________

(1) The amounts reported in this column for each NEO are reflected as compensation to such NEO in the Summary Compensation Table.

(2) Includes the total market value of deferred compensation program balance at December 31, 2021. The aggregate balance reflects a significant level of earnings on previously earned and deferred compensation.

Employment Agreements and Potential Payments Upon Termination or Change in Control

Employment Agreements

As referenced above, we entered into employment agreements with Ms. Apsey and Mr. Jipping in December 2012 which superseded the employment agreements then in effect. In February 2015, we entered into an employment agreement with Ms. Mason Soneral which superseded her employment agreement then in effect. In July 2017, we entered into an employment agreement with Ms. Holloway, which superseded her employment agreement then in effect. In February 2019, we entered into an employment agreement with Ms. Tanner which superseded her employment agreement then in effect. Each employment agreement is subject to automatic one-year employment term renewals each year beginning on its second anniversary, unless either party provides the other with 30 days’ advance written notice of intent not to renew the employment term. Ms. Apsey’s agreement was modified in October 2016 in connection with her appointment as President and Chief Executive Officer and the initial term of the agreement expired on December 31, 2018 but is subject to the automatic one-year renewal provision described above. The following describes the material terms of the employment agreements, as amended, with the NEOs who remained employed by the Company on December 31, 2021.

The employment agreements provide that each NEO will receive an annual base salary equal to their current base salary, which is subject to annual review and increase by our Board of Directors at its discretion. The employment agreements also provide that NEOs are eligible to receive an annual cash bonus, subject to our achievement of certain performance targets established by our Board of Directors, as detailed in “Compensation Discussion and Analysis.” The employment agreements also provide the NEOs with the right to participate in equity plans, employee benefit plans and retirement plans, including but not limited to welfare plans, retiree welfare benefit plans and defined benefit and defined contribution plans.

In addition, the NEOs’ employment agreements provide for payments by us of certain benefits upon termination of employment. The rights available at termination depend on the situation and circumstances surrounding the terminating event. The terms “Cause” and “Good Reason” are used in the employment agreements of each NEO and an understanding of these terms is necessary to determine the appropriate rights for which a NEO is eligible. The terms are defined as follows:

•Cause means: a NEO’s continued failure to substantially perform his or her duties (other than as a result of total or partial incapacity due to physical or mental illness) for a period of 10 days following written notice by the Company to the NEO of such failure; dishonesty in the performance of the NEO’s duties; a NEO’s conviction of, or plea of nolo contender to, a crime constituting a felony or misdemeanor involving moral turpitude; willful malfeasance or willful misconduct in connection with a NEO’s duties; any act or omission which is injurious to the financial condition or business reputation of the Company; or violation of the non-compete or confidentiality provisions of the employment agreement.

•Good reason means: a greater than 10% reduction in the total value of the NEO’s base salary, target bonus, and employee benefits; or if the NEO’s responsibilities and authority are substantially diminished.

If a NEO’s employment is terminated with cause by the Company or by the NEO without good reason, the NEO will generally only receive his or her accrued but unpaid compensation and benefits as of the date of his or her employment termination. If the NEO terminates due to death or disability (as defined in the employment

109

Table of Contents

agreements), the NEO (or the NEO’s spouse or estate) would also receive a pro rata portion of his or her current year annual target bonus.

If a NEO’s employment is terminated by the Company without cause or by the NEO for good reason, the NEO will receive the following, subject to the NEO’s execution of a release agreement and commencing generally on the earliest date that is permitted under Section 409A of the Internal Revenue Code:

•any accrued but unpaid compensation and benefits including:

◦Ms. Apsey: cash balance and ESRP shift under the Qualified Plan and vested portion of ESRP balance;

◦Mr. Jipping: annual benefit under the traditional component of the Qualified Plan and vested portion of ESRP balance; and

◦Ms. Mason Soneral, Ms. Holloway and Ms. Tanner: cash balance under the Qualified Plan and vested portion of ESRP balance

•continued payment of the NEO’s then-current base salary for two years;

•if the termination is within six months before or two years after a “Change of Control” (as defined in the employment agreements), payment of an amount equal to two times the average of the ACPBs, that were payable to the NEO for the three fiscal years immediately preceding the fiscal year in which his or her employment terminates, payable in equal installments over the period in which continued base salary payments are made;

•a pro rata portion of the ACPB for the year of termination, based upon the Company’s actual achievement of the performance targets for such year as determined under the ACPB and paid at the time that such bonus would normally be paid;

•eligibility to continue coverage under our active medical, dental and vision plans subject to applicable COBRA rules; if such coverage is elected, we will reimburse the NEO for the shorter of 18 months, or until the NEO becomes eligible for coverage under another employer-sponsored group plan, in an amount equal to our periodic cost of such coverage for other executives, plus a tax gross-up amount;

•outplacement services for up to two years; and

•for Ms. Apsey, deemed satisfaction of the eligibility requirements of our Postretirement Welfare Plan for purposes of participation therein; and Mr.Jipping met the age and service eligibility requirements for participation in our Postretirement Welfare Plan. In addition, if we terminate our Postretirement Welfare Plan and, by application of the provisions described in the prior sentence, any of these NEOs would otherwise be entitled to retiree welfare benefits, we will establish other coverage for the NEO or the NEO will receive a cash payment equal to our cost of providing such benefits, in order to assist the NEO in obtaining other retiree welfare benefits.

In addition, while employed by us and for a period of two years after any termination of employment without cause by the Company (other than due to their disability) or for good reason by them and for a period of one year following any other termination of their employment, the NEOs will be subject to certain covenants not to compete with or assist other entities in competing with our business and not to encourage our employees to terminate their employment with us. At all times while employed and thereafter, all of the NEOs will also be subject to a covenant not to disclose confidential information.

In the event the NEO becomes subject to excise taxes under Section 4999 of the Internal Revenue Code as a result of payments and benefits received under the employment agreements or any other plan, arrangement or agreement with us, we will pay the NEO only that portion of such payments which are in total equal to one dollar less than the amount that would subject the NEO to the excise tax.

Payments in the Event of Termination

The benefits to be provided to the NEOs as a result of termination under various scenarios are detailed in the tables below. The tables assume that the termination occurred on December 31, 2021.

110

Table of Contents


Linda H. Apsey - Termination Scenarios: Value of Potential Payments
Total Value of Severance, Benefits and Unvested Equity Awards(1)(2)
	Voluntary Resignation		Involuntary For Cause		Involuntary Not-for-Cause or Voluntary Good Reason		Change In Control (pre-tax)(3)		Disability		Death (pre-retirement)(4)
Compensation
Cash Severance	$	—	$	—	$	1,681,000	$	4,129,329	$	—	$	—
Target Short-term Bonus	—		—		—		—		840,500		840,500
Pro Rata Short-term (Annual) Incentive Comp	—		—		1,370,015		1,370,015		—		—
Retention Awards					—		—		—		—
Service-Based Unit Awards (5)	—		—		—		1,704,161		1,704,161		1,704,161
Performance-Based Unit Awards (6)	—		—		—		1,701,974		3,408,386		3,408,386
Benefits and Perquisites					—
Retirement Plan	—		—		—		—		—		—
ESRP	—		—		—		—		—		—
Perquisites	—		—		25,000		25,000		—		—
Health & Welfare Benefits	—		—		31,592		31,592		—		—
Postretirement Welfare Plan (7)	—		—		775,824		775,824		—		—
Total Payout:	$	—	$	—	$	3,883,431	$	9,737,895	$	5,953,047	$	5,953,047


Gretchen L. Holloway - Termination Scenarios: Value of Potential Payments
Total Value of Severance, Benefits and Unvested Equity Awards(1)(2)
	Voluntary Resignation		Involuntary For Cause		Involuntary Not-for-Cause or Voluntary Good Reason		Change In Control (pre-tax)(3)		Disability		Death (pre-retirement)(4)
Compensation
Cash Severance	$	—	$	—	$	823,400	$	2,018,961	$	—	$	—
Target Short-term Bonus	—		—		—		—		411,700		411,700
Pro Rata Short-term (Annual) Incentive Comp	—		—		671,071		671,071		—		—
Service-Based Unit Awards (5)	—		—		—		582,936		582,936		582,936
Performance-Based Unit Awards (6)	—		—		—		581,738		1,165,924		1,165,924
280G Cutback	—		—		—		—		—		—
Benefits and Perquisites
Retirement Plan	—		—		—		—		—		—
ESRP	—		—		—		—		—		—
Perquisites	—		—		25,000		25,000		—		—
Health & Welfare Benefits	—		—		10,596		10,596		—		—
Total Payout:	$	—	$	—	$	1,530,067	$	3,890,302	$	2,160,560	$	2,160,560

111

Table of Contents


Jon E. Jipping - Termination Scenarios: Value of Potential Payments
Total Value of Severance, Benefits and Unvested Equity Awards(1)(2)
	Voluntary Resignation or Voluntary Good Reason		Involuntary For Cause		Involuntary Not-for-Cause		Change In Control (pre-tax)(3)		Disability		Death (pre-retirement)(4)
Compensation
Cash Severance	$	—	$	—	$	1,195,000	$	2,972,455	$	—	$	—
Target Short-term Bonus	—		—		—		—		597,500		597,500
Pro Rata Short-term (Annual) Incentive Comp	—		—		973,925		973,925		—		—
Service-Based Unit Awards (5)	852,195		—		852,195		852,195		852,195		852,195
Performance-Based Unit Awards (6)	—		—		—		852,485		1,704,419		1,704,419
Benefits and Perquisites
Retirement Plan	—		—		—		—		—		—
ESRP	—		—		—		—		—		—
Perquisites	—		—		25,000		25,000		—		—
Health & Welfare Benefits	—		—		22,128		22,128		—		—
Postretirement Welfare Plan (7)	—		—		776,225		776,225
Total Payout:	$	852,195	$	—	$	3,844,473	$	6,474,413	$	3,154,114	$	3,154,114


Christine Mason Soneral - Termination Scenarios: Value of Potential Payments
Total Value of Severance, Benefits and Unvested Equity Awards(1)(2)
	Voluntary Resignation		Involuntary For Cause		Involuntary Not-for-Cause or Voluntary Good Reason		Change In Control (pre-tax)(3)		Disability		Death (pre-retirement)(4)
Compensation
Cash Severance	$	—	$	—	$	799,600	$	1,999,751	$	—	$	—
Target Short-term Bonus	—		—		—		—		399,800		399,800
Pro Rata Short-term (Annual) Incentive Comp	—		—		651,674		651,674		—		—
Service-Based Unit Awards (5)	—		—		—		571,629		286,324		286,324
Performance-Based Unit Awards (6)	—		—		—		572,292		191,548		191,548
Benefits and Perquisites
Retirement Plan	—		—		—		—		—		—
ESRP	—		—		—		—		—		—
Perquisites	—		—		25,000		25,000		—		—
Health & Welfare Benefits	—		—		22,115		22,115		—		—
Total Payout:	$	—	$	—	$	1,498,389	$	3,842,461	$	877,672	$	877,672

112

Table of Contents


Krista Tanner - Termination Scenarios: Value of Potential Payments
Total Value of Severance, Benefits and Unvested Equity Awards(1)(2)
	Voluntary Resignation		Involuntary For Cause		Involuntary Not-for-Cause or Voluntary Good Reason		Change In Control (pre-tax)(3)		Disability		Death (pre-retirement)(4)
Compensation
Cash Severance	$	—	$	—	$	709,800	$	1,411,238	$	—	$	—
Target Short-term Bonus	—		—		—		—		354,900		354,900
Pro Rata Short-term (Annual) Incentive Comp	—		—		578,487		578,487		—		—
Service-Based Unit Awards (5)	—		—		—		500,091		249,274		249,274
Performance-Based Unit Awards (6)	—		—		—		498,224		165,137		165,137
280G Cutback	—		—		—		(442,488)		—		—
Benefits and Perquisites
Retirement Plan	—		—		—		—		—		—
ESRP	—		—		—		—		—		—
Perquisites	—		—		25,000		25,000		—		—
Health & Welfare Benefits	—		—		19,730		19,730		—		—
Total Payout:	$	—	$	—	$	1,333,017	$	2,590,282	$	769,311	$	769,311

____________________________

(1)All scenarios include the value of severance. For Ms. Apsey and Mr. Jipping, the value of the Postretirement Welfare Plan is additionally included where applicable. The Pension Benefits Table assumes that none of the NEOs are terminated prior to retirement age and that benefits are paid once retirement commences (age 58 is assumed). All other accrued pension benefits, outside of present value reductions outlined in footnote (5), and additional pension benefits upon death, have not been included in these termination scenarios but can be found in the “Pension Benefits Table.”

(2)Upon any termination of employment, benefits that are accrued but unpaid prior to that event are paid. These benefits are assumed to be $0 in the above tables.

(3)Change in control values include severance amounts reflecting cutbacks to the extent employer payments exceed the executive respective limits. Ms. Tanner would be subject to an excise tax on the employer payments as of the assumed change in control date; therefore, cutbacks in the amount of $442,488 (Ms. Tanner) have been reflected.

(4)In the event of Mr. Jipping’s termination for death (pre-retirement), his spouse or designated beneficiary if not married would receive half the 50% joint and survivor annuity under the traditional component of the Qualified Plan. Under termination for death (pre-retirement), Ms. Apsey’s, Ms. Mason Soneral’s, Ms. Holloway’s and Ms. Tanner’s Qualified Plan benefits are payable immediately to the surviving spouse or designated beneficiary it not married and ESRP benefits are payable to a designated beneficiary. The above termination scenarios do not reflect the reduction in present value of death benefits ($103,732 for Ms. Apsey, $68,077 for Ms. Holloway, $1,066,469 for Mr. Jipping, $79,399 for Ms. Mason Soneral and $38,559 for Ms. Tanner compared to present value in the Pension Benefits Table).

(5)Under the Fortis Inc. 2020 Restricted Share Unit Plan, outstanding and unvested SBUs and respective dividend equivalents shall be deemed to be vested SBUs and redeemable on the date that is immediately prior to the effective date of the consummation of the transaction resulting from the Change of Control. In the case of Death, Disability or Retirement termination and 15 years or more of service with the Company or its Affiliates, the outstanding and unvested SBU awards and respective dividend equivalents shall be deemed vested and redeemable on the date of the death or on the date on which the grantee’s service is terminated due to Disability or Retirement. In the case of Death, Disability or Retirement termination and less than 15 years of service with the Company or its Affiliates, the outstanding and unvested SBU awards and respective dividend equivalents shall be deemed to have vested pro-rata based on the period served from grant date to termination and redeemable on the date of the death or on the date on which the

113

Table of Contents

grantee’s service is terminated due to Disability or Retirement. In the case of Cause, Involuntary Termination Without Cause and Voluntary Termination outstanding and unvested SBU awards and respective dividend equivalents shall be deemed to be forfeited.

(6)Under the Executive Omnibus Plan, outstanding and unvested PBU awards and respective dividend equivalents shall become redeemable on the Change of Control Redemption Date under a Change in Control (as defined in the Executive Omnibus Plan). In the case of Death, Disability or Retirement termination and 15 years or more of service with the Company or its Affiliates, the outstanding and unvested PBU awards and respective dividend equivalents will remain outstanding and be payable on the payout date of such awards subject to the achievement of the applicable payment criteria. In the case of Death, Disability or Retirement termination and less than 15 years of service with the Company or its Affiliates, the outstanding and unvested PBU awards and respective dividend equivalents shall be deemed to have vested pro-rata based on the period served from grant date to termination and be payable on the payout date of such awards subject to the achievement of the applicable payment criteria. Values shown in the tables above are based on target performance as an estimate of potential payments. In the case of Cause, Involuntary Termination Without Cause and Voluntary Termination outstanding and unvested PBU awards and respective dividend equivalents shall be deemed to be forfeited.

(7)The value of the Postretirement Welfare Plan benefit is included in involuntary termination not for cause and change in control scenarios for Ms. Apsey and Mr. Jipping since their employment agreement includes a provision for deemed satisfaction of the eligibility requirements when terminated under these scenarios. It is assumed each would commence their Postretirement Welfare Benefits at age 58. The rate at which future expected benefit payments were discounted in calculating the Postretirement Welfare Plan present values was 3.14%, the same rate used for fiscal year-end 2021 accounting disclosure of the Postretirement Welfare Plan.

Upon death or disability, a NEO (or his or her estate) receives a pro rata portion of his or her current year target corporate performance bonus. All balances under the cash balance and ESRP shift components of the Qualified Plan, and the ESRP balance (vested portion only for disability), are immediately payable. If the NEO has 10 years of service after age 45, then the NEO (and his or her spouse) is eligible for retiree medical benefits.

Pay Ratio

As required by the Dodd-Frank Wall Street Reform and Consumer Protection Act, and the SEC under Item 402(u) of Regulation S-K, we are providing the following information about the relationship of the annual total compensation of our employees and the annual total compensation of Linda H. Apsey our CEO:

For 2021, our last completed fiscal year:

the median of the annual total compensation of all employees of the Company (other than Ms. Apsey), was $159,801; and

the annual total compensation of Ms. Apsey as reported in the Summary Compensation Table was $4,585,608.

Based on this information, Ms. Apsey’s 2021 annual total compensation was estimated to be 29 times the median annual total compensation for all employees, other than Ms. Apsey.

We determined that, as of December 31, 2020, our employee population consisted of 698 individuals with all of those individuals located in the United States. To identify the “median employee” from our employee population, excluding Ms. Apsey, we utilized a consistently applied compensation measure that included the sum of each employee’s 2020 annualized base salary as of December 31, 2020 as reflected in our payroll records, and target 2020 awards made under our annual corporate performance plan, 2017 Omnibus Plan, Executive Omnibus Plan and Fortis Inc. 2020 Restricted Share Unit Plan that were not paid in 2020. We arrayed these values to select our “median employee.”

Under Item 402(u), a company is permitted to identify its “median employee” once every three years if there has been no significant change to its employee population or employee compensation arrangements that would result in a significant change to its pay ratio disclosure. We updated our “median employee” for 2020 as it had

114

Table of Contents

been three years since we had last identified the “median employee” for this analysis. The same median employee was used to calculate the 2021 pay ratio.

Using our “median employee” and Ms. Apsey, we calculated the applicable Summary Compensation Table values for each according to applicable SEC rules.

Director Compensation

The following table provides information concerning the compensation of each person who served as a non-employee director of the Company during 2021.

Non-Employee Director Compensation Table


Name	Fees Earned or Paid in Cash ($) (1)		Total ($)
(a)	(b)		(h)
Leanne M. Bell (2)	$	—	$	—
Robert A. Elliott (3)	149,518		149,518
Albert Ernst (4)	140,000		140,000
Debora Frodl	140,000		140,000
Alexander I. Greenbaum (5)	—		—
Ronnie Hawkins, Jr.	140,000		140,000
David G. Hutchens	140,000		140,000
James P. Laurito	140,000		140,000
Jocelyn H. Perry (2)	—		—
Sandra E. Pierce	190,000		190,000
Kevin L. Prust	145,482		145,482
A. Douglas Rothwell	155,000		155,000
Thomas G. Stephens (4)	14,014		14,014

____________________________

(1)Includes annual Board retainer and committee chairmanship retainer, as well as a chairperson fee (for Ms. Pierce only).

(2)Ms. Perry joined the Board in January 2022 and Ms. Bell joined the Board in February 2022.

(3)Mr. Elliott was appointed to Chairperson of the Audit and Risk Committee in May 2021.

(4)Mr. Stephens left the Board in February 2021 and Mr. Ernst left the Board in February 2022.

(5)Mr. Greenbaum waived all compensation due to him for his service on the Board. Mr. Greenbaum left the Board in September 2021.

Directors who are employees of the Company do not receive separate compensation for their services as a director. All non-employee directors are compensated under our non-employee director compensation policy, pursuant to which they are paid an annual cash retainer of $140,000. In addition, we pay an additional cash retainer of $15,000 annually to the chair of each Board committee and $50,000 annually to our chairperson. We do not pay per-meeting fees under the policy. Non-employee directors are reimbursed for their out-of-pocket expenses incurred for the performance of their duties as directors.

We maintain a Director Deferred Compensation Plan under which nonqualified deferred compensation is permissible. Only non-employee directors of the Company are eligible to participate in this plan. Directors are allowed to defer up to 100% of their annual board compensation. Investment earnings are based on the various investment options available under the plan and are selected by the individual directors. Distributions will be made when the director ceases to serve on the Board and/or ceases to provide other non-employee consulting services to the Company or any Fortis entity. Mr. Laurito and Mr. Stephens participated in this plan in 2021.

115

Table of Contents

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS.

The following table sets forth certain information regarding the ownership of our common stock and Fortis’ common stock as of February 1, 2022, except as otherwise indicated, by:

•each of our current directors;

•each of the persons named in the “Summary Compensation Table” under Item 11; and

•all current directors and executive officers as a group.

The number of shares beneficially owned is determined under rules of the SEC and the information is not necessarily indicative of beneficial ownership for any other purpose. Under such rules, beneficial ownership includes any shares as to which the individual has sole or shared voting power or investment power and also any shares which the individual has the right to acquire on February 1, 2022 or within 60 days thereafter through the exercise of any stock option or other right. Unless otherwise indicated, each holder has sole investment and voting power with respect to the shares set forth in the following table:


Name of Beneficial Owner	Number of Company Shares Beneficially Owned (#)	Percent of Class (%)		Number of Fortis shares Beneficially Owned (#)		Percent of Class (%)
Linda H. Apsey	—	—		53,889		*
Gretchen L. Holloway	—	—		8,862		*
Jon E. Jipping	—	—		60,000		*
Christine Mason Soneral	—	—		—		—
Krista Tanner	—	—		—		—
Leanne M. Bell	—	—		—		—
Robert A. Elliott	—	—		—		—
Albert Ernst	—	—		10,274	(1)	*
Debora Frodl	—	—		—		—
Alexander I. Greenbaum	—	—		—		—
Ronnie Hawkins	—	—		—		—
David G. Hutchens	—	—		83,907		*
James P. Laurito	—	—		48,544		*
Jocelyn H. Perry				187,622		*
Sandra E. Pierce	—	—		—		—
Kevin L. Prust	—	—		500		*
A. Douglas Rothwell	—	—		—		—
All current directors and executive officers as a group (17 persons)	—	—	%	443,324		*

* Less than one percent

____________________________

(1)Includes 4,234 shares owned by the spouse of Mr. Ernst.

ITC Investment Holdings, which owns all of our outstanding common stock, is 80.1% owned by FortisUS and 19.9% owned by Eiffel. FortisUS is a wholly-owned subsidiary of Fortis.

At December 31, 2021, there were no securities authorized for issuance under any compensation plans of ITC Holdings.

116

Table of Contents

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE.

CERTAIN TRANSACTIONS

Pursuant to its charter, the Governance and Human Resources Committee is charged with monitoring and reviewing issues involving independence and potential conflicts of interest with respect to our directors and executive officers. The Committee also determines whether or not a particular relationship serves the best interest of the Company and its shareholder and whether the relationship should be continued or eliminated. In addition, our Code of Conduct and Ethics generally forbids conflicts of interest unless approved by the Board or a designated committee.

Although the Company does not have a written policy with regard to the approval of transactions between the Company and its executive officers and directors, each director and officer must annually submit a form to the General Counsel disclosing his or her conflicts or potential conflicts of interest or certifying that no such conflicts of interest exist. Throughout the year, if any transaction constituting a conflict of interest arises or circumstances otherwise change that would cause a director’s or officer’s annual conflict certification to become incorrect, the director or officer must inform the General Counsel of such circumstances. The Committee reviews existing conflicts as well as potential conflicts of interest and determines whether any further action is necessary, such as recommending to the Board whether a director or officer should be requested to offer his or her resignation. Where the Board makes a determination regarding a potential conflict of interest, a majority of the Board (excluding any interested member or members) shall decide upon an appropriate course of action. Additionally, any director or officer who has a question about whether a conflict exists must bring it to the attention of the Company’s General Counsel or Chairperson of the Committee.

DIRECTOR INDEPENDENCE

Based on the absence of any material relationship between them and us, other than their capacities as directors, the Board has determined that Mmes. Bell, Frodl and Pierce and Messrs. Elliott, Ernst, Hawkins, Jr., Prust, and Rothwell are “independent” as defined in the Shareholders Agreement. In addition, our Board has determined that, as the committees are currently constituted, a majority of the members of the Audit and Risk Committee are “independent” as required in its charter. None of the directors determined to be independent is or ever has been employed by us.

An independent director under the Shareholders Agreement is a director who meets all of the following requirements: (a) is elected by the shareholders of ITC Investment Holdings; (b) is designated as an independent director by the ITC Investment Holdings’ board and Company Board, or the shareholders of ITC Investment Holdings; (c) is not a director that is nominated by Finn Investment Pte Ltd or any successor or permitted assign thereof and appointed as a member of the ITC Investment Holdings’ board and Company Board in accordance with the Shareholders Agreement; (d) is not and during the three years prior to being designated as an independent director has not been any of the following: (i) a director of FortisUS or any of its affiliates (other than ITC Investment Holdings or the Company); or (ii) an officer or employee of ITC Investment Holdings, the Company, FortisUS or any of their affiliates; and (e) would meet the definition of “independent director” under the NYSE Listed Company Manual if such director were a member of the board of directors of Fortis, FortisUS, ITC Investment Holdings, or the Company (assuming, in the case of FortisUS, ITC Investment Holdings and the Company, that such entities were listed on the NYSE).

Mr. Elliott serves on the board of directors of UNS Energy Corporation, a wholly-owned subsidiary of FortisUS. When determining Mr. Elliott’s independence, the board and shareholders agreed to waive the requirements set forth in the definition of independent director under the Shareholders Agreement which states that a director is not and during the three years prior to being designated as a director of the company has not served as a director of FortisUS or any of its affiliates.

117

Table of Contents

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES.

The following table provides a summary of the aggregate fees incurred for Deloitte’s services in 2021 and 2020:


	2021		2020
Audit fees (1)	$	2,083,000	$	1,995,000
Audit-related fees (2)	57,000		56,000
Tax fees (3)	13,000		16,000
All other fees (4)	7,000		4,000
Total fees	$	2,160,000	$	2,071,000

____________________________

(1) Audit fees were for professional services rendered for the audit of our consolidated financial statements and internal controls and reviews of the interim consolidated financial statements included in quarterly reports and services that are normally provided by Deloitte in connection with statutory and regulatory filing engagements.

(2) Audit-related fees were for assurance and related services that are reasonably related to the performance of the audit or review of our consolidated financial statements and are not reported under “Audit Fees.” These services include audit of our employee benefit plans.

(3) Tax fees were professional services for federal and state tax compliance, tax advice and tax planning.

(4) All other fees were for services other than the services reported above. These services included subscriptions to the Deloitte Accounting Research Tool and attendance at Deloitte sponsored conferences and labs.

The Audit and Risk Committee of the Board of Directors does not consider the provision of the services described above by Deloitte to be incompatible with the maintenance of Deloitte’s independence.

The Audit and Risk Committee has adopted a pre-approval policy for all audit and non-audit services pursuant to which it pre-approves all audit and non-audit services provided by the independent registered public accounting firm prior to the engagement with respect to such services. To the extent that we need an engagement for audit and/or non-audit services between Audit and Risk Committee meetings, the Audit and Risk Committee chairman is authorized by the Audit and Risk Committee to approve the required engagement on its behalf.

The Audit and Risk Committee approved all of the services performed by Deloitte in 2021 pursuant to the pre-approval policy.

118

Table of Contents

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.


(a)	(1)	Financial Statements:
		Management’s Report on Internal Control over Financial Reporting
		Report of Independent Registered Public Accounting Firm
		Consolidated Statements of Financial Position as of December 31, 2021 and 2020
		Consolidated Statements of Comprehensive Income for the Years Ended December 31, 2021, 2020 and 2019
		Consolidated Statements of Changes in Stockholder's Equity for the Years Ended December 31, 2021, 2020 and 2019
		Consolidated Statements of Cash Flows for the Years Ended December 31, 2021, 2020 and 2019
		Notes to Consolidated Financial Statements
	(2)	Financial Statement Schedules
		Schedule I — Condensed Financial Information of Registrant
		All other schedules for which provision is made in Regulation S-X either (i) are not required under the related instructions or are inapplicable and, therefore, have been omitted, or (ii) the information required is included in the consolidated financial statements or the notes thereto that are a part hereof.
(b)		Exhibit Listing

The following exhibits are filed as part of this report or filed previously and incorporated by reference to the filing indicated. Our SEC file number is 001-32576.


Exhibit No.						Description of Exhibit

2.1						Agreement and Plan of Merger, dated as of February 9, 2016, among FortisUS Inc., Element Acquisition Sub Inc., Fortis Inc., and ITC Holdings Corp. (filed with Registrant’s Form 8-K on February 11, 2016)

3.1						Restated Articles of Incorporation of ITC Holdings Corp. (filed with Registrant’s Form 10-Q for the quarter ended September 30, 2016)

3.2						Tenth Amended and Restated Bylaws of ITC Holdings Corp. (filed with Registrant’s Form 8-K on February 4, 2022)

4.3						Indenture, dated as of July 16, 2003, between ITC Holdings Corp. and BNY Midwest Trust Company, as trustee (filed with Registrant’s Registration Statement on Form S-1, as amended, Reg. No. 333-123657)

4.5						First Mortgage and Deed of Trust, dated as of July 15, 2003, between International Transmission Company and BNY Midwest Trust Company, as trustee (filed with Registrant’s Registration Statement on Form S-1, as amended, Reg. No. 333-123657)

4.6						First Supplemental Indenture, dated as of July 15, 2003, supplementing the First Mortgage and Deed of Trust dated as of July 15, 2003, between International Transmission Company and BNY Midwest Trust Company, as trustee (filed with Registrant’s Registration Statement on Form S-1, as amended, Reg. No. 333-123657)

4.7						Second Supplemental Indenture, dated as of July 15, 2003, supplementing the First Mortgage and Deed of Trust dated as of July 15, 2003, between International Transmission Company and BNY Midwest Trust Company, as trustee (filed with Registrant’s Registration Statement on Form S-1, as amended, Reg. No. 333-123657)

4.8						Amendment to Second Supplemental Indenture, dated as of January 19, 2005, between International Transmission Company and BNY Midwest Trust Company, as trustee (filed with Registrant’s Registration Statement on Form S-1, as amended, Reg. No. 333-123657)

4.9						Second Amendment to Second Supplemental Indenture, dated as of March 24, 2006, between International Transmission Company and The Bank of New York Trust Company, N.A. (as successor to BNY Midwest Trust Company), as trustee (filed with Registrant’s Form 8-K on March 30, 2006)

4.10						Third Supplemental Indenture, dated as of March 28, 2006, supplementing the First Mortgage and Deed of Trust dated as of July 15, 2003, between International Transmission Company and BNY Midwest Trust Company, as trustee (filed with Registrant’s Form 8-K on March 30, 2006)

119

Table of Contents


4.12						Second Supplemental Indenture, dated as of October 10, 2006, supplemental to the Indenture dated as of July 16, 2003, between the Registrant and The Bank of New York Trust Company, N.A., (as successor to BNY Midwest Trust Company, as trustee) (filed with Registrant’s Form 8-K on October 10, 2006)

4.14						First Mortgage Indenture between Michigan Electric Transmission Company, LLC and JPMorgan Chase Bank, dated as of December 10, 2003 (filed with Registrant’s Form 10-Q for the quarter ended September 30, 2006)

4.17						ITC Holdings Corp. Note Purchase Agreement, dated as of September 20, 2007 (filed with Registrant’s Form 10-Q for the quarter ended September 30, 2007)

4.18						Third Supplemental Indenture, dated as of January 24, 2008, supplemental to the Indenture dated as of July 16, 2003, between the Registrant and The Bank of New York Trust Company, N.A. (as successor to BNY Midwest Trust Company), as trustee (filed with Registrant’s Form 8-K on January 25, 2008)

4.19						First Mortgage and Deed of Trust, dated as of January 14, 2008, between ITC Midwest LLC and The Bank of New York Trust Company, N.A., as trustee (filed with Registrant’s Form 8-K on February 1, 2008)

4.20						First Supplemental Indenture, dated as of January 14, 2008, supplemental to the First Mortgage Indenture between ITC Midwest LLC and The Bank of New York Trust Company, N.A., as trustee, First Mortgage and Deed of Trust, dated as of January 14, 2008 (filed with Registrant’s Form 8-K on February 1, 2008)

4.24						Third Supplemental Indenture, dated as of November 25, 2008, between METC and The Bank of New York Mellon Trust Company, N.A. (as successor to JPMorgan Chase Bank, N.A.), as trustee, to the First Mortgage Indenture between Michigan Electric Transmission Company, LLC and JPMorgan Chase Bank, dated as of December 10, 2003 (filed with Registrant’s Form 8-K on December 23, 2008)

4.25						Fourth Supplemental Indenture, dated as of December 11, 2009, between ITC Holdings Corp. and The Bank of New York Mellon Trust Company, N.A. (f.k.a. The Bank of New York Trust Company, N.A., as successor to BNY Midwest Trust Company), as trustee (filed with Registrant’s Form 8-K on December 14, 2009)

4.26						Fourth Supplemental Indenture, dated as of December 10, 2009, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.), as trustee (filed with Registrant’s Form 8-K on December 17, 2009)

4.27						Fifth Supplemental Indenture, dated as of April 20, 2010, between Michigan Electric Transmission Company, LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to JPMorgan Chase Bank), as trustee (filed with Registrant’s Form 8-K on May 10, 2010)

4.28						Third Supplemental Indenture, dated as of December 15, 2008, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (The Bank of New York Trust Company, N.A.), as trustee (filed with Registrant’s Form 10-Q for the quarter ended June 30, 2011)

4.29						Fifth Supplemental Indenture, dated as of July 15, 2011, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.), as trustee (filed with Registrant’s Form 10-Q for the quarter ended June 30, 2011)

4.30						Sixth Supplemental Indenture, dated as of November 29, 2011, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.), as trustee (filed with Registrant’s Form 8-K on December 1, 2011)

4.31						Sixth Supplemental Indenture, dated as of October 5, 2012, between Michigan Electric Transmission Company, LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to JPMorgan Chase Bank), as trustee (filed with Registrant’s Form 8-K on October 29, 2012)

4.32						Seventh Supplemental Indenture, dated as of March 18, 2013, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.), as trustee (filed with Registrant’s Form 8-K on April 8, 2013)

4.33						Indenture, dated as of April 18, 2013, between ITC Holdings Corp. and Wells Fargo Bank, National Association, as trustee (including form of note) (filed with Registrant’s Form S-3 on April 18, 2013)

4.34						First Supplemental Indenture, dated as of July 3, 2013, between ITC Holdings Corp. and Wells Fargo Bank, National Association, as trustee (including forms of notes) (filed with Registrant’s Form 8-K on July 3, 2013)

4.35						Fifth Supplemental Indenture, dated as of August 7, 2013, between International Transmission Company and The Bank of New York Mellon Trust Company, N.A. (as successor to BNY Midwest Trust Company), as trustee (including form of bonds) (filed with Registrant’s Form 8-K on August 16, 2013)

120

Table of Contents


4.36						Fifth Supplemental Indenture, dated May 16, 2014, between ITC Holdings Corp. and The Bank of New York Mellon Trust Company, N.A. (f.k.a. The Bank of New York Trust Company, N.A., as successor to BNY Midwest Trust Company), as Trustee (filed with Registrant’s Form 8-K on May 16, 2014)

4.38						Second Supplemental Indenture, dated as of June 4, 2014 between ITC Holdings Corp. and Wells Fargo Bank, National Association, as trustee, together with form of 3.65% Senior Note due 2024 (filed with Registrant’s Form 8-K on June 4, 2014)

4.39						Sixth Supplemental Indenture, dated as of May 23, 2014, between International Transmission Company and The Bank of New York Mellon Trust Company, N.A. (as successor to BNY Midwest Trust Company), as trustee (filed with Registrant’s Form 8-K on June 10, 2014)

4.40						First Mortgage and Deed of Trust, dated as of November 12, 2014, between ITC Great Plains, LLC and Wells Fargo Bank, National Association, as trustee (filed with Registrant’s Form 8-K on November 26, 2014)

4.41						First Supplemental Indenture, dated as of November 12, 2014, between ITC Great Plains, LLC and Wells Fargo Bank, National Association, as trustee (filed with Registrant’s Form 8-K on November 26, 2014)

4.42						Seventh Supplemental Indenture, dated as of December 5, 2014, between Michigan Electric Transmission Company, LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to JPMorgan Chase Bank), as trustee (filed with Registrant’s Form 8-K on December 22, 2014)

4.43						Eighth Supplemental Indenture, dated as of March 18, 2015, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.), as trustee (filed with Registrant’s Form 8-K on April 8, 2015)

4.44						Eighth Supplemental Indenture, dated as of March 31, 2016, between Michigan Electric Transmission Company, LLC and Bank of New York Mellon Trust Company, N.A. (as successor to JPMorgan Chase Bank), as trustee (filed with Registrant’s Form 8-K on April 26, 2016)

4.45						Third Supplemental Indenture, dated as of July 5, 2016, between ITC Holdings Corp. and Wells Fargo Bank, National Association, as trustee, together with form of 3.25% Note due 2026 (filed with Registrant’s Form 8-K on July 5, 2016)

4.46						Ninth Supplemental Indenture, dated as of March 15, 2017, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.), as trustee (filed with Registrant’s Form 8-K on April 18, 2017)

4.47						Fourth Supplemental Indenture, dated as of November 14, 2017 between ITC Holdings Corp. and Wells Fargo Bank, National Association, as trustee (with Form of 2.700% Notes due 2022 and Form of 3.350% Notes due 2027) (filed with Registrant’s Form 8-K on November 15, 2017)

4.48						Seventh Supplemental Indenture, dated as of March 14, 2018, between International Transmission Company and The Bank of New York Mellon Trust Company, N.A. (as successor to BNY Midwest Trust Company), as trustee (filed with Registrant’s Form 8-K on March 29, 2018)

4.49						Tenth Supplemental Indenture, dated as of September 28, 2018, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.) as trustee (filed with Registrant’s Form 8-K on November 2, 2018)

4.50						Ninth Supplemental Indenture, dated as of November 28, 2018, between Michigan Electric Transmission Company, LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to JP Morgan Chase Bank), as trustee (filed with Registrant’s Form 8-K on January 15, 2019)

4.51						Eighth Supplemental Indenture, dated as of August 14, 2019, between International Transmission Company and The Bank of New York Mellon Trust Company, N.A. (as successor to BNY Midwest Trust Company), as trustee (filed with Registrant’s Form 8-K on August 28, 2019)

4.52						Fifth Supplemental Indenture, dated as of May 14, 2020, between ITC Holdings Corp. and Wells Fargo Bank, National Association, as trustee (with Form of 2.95% Notes due 2030) (filed with Registrant’s Form 8-K on May 14, 2020).

4.53						Eleventh Supplemental Indenture, dated as of May 8, 2020, between ITC Midwest LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to The Bank of New York Trust Company, N.A.) as trustee (filed with Registrant’s Form 8-K on July 15, 2020).

4.54						Tenth Supplemental Indenture, dated as of August 12, 2020, between Michigan Electric Transmission Company, LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to JP Morgan Chase Bank), as trustee (filed with Registrant’s Form 8-K on October 14, 2020).

121

Table of Contents


4.55						Eleventh Supplemental Indenture, dated as of July 19, 2021, between Michigan Electric Transmission Company, LLC and The Bank of New York Mellon Trust Company, N.A. (as successor to JPMorgan Chase Bank), as trustee (filed with Registrant’s Form 8-K on August 3, 2021)

4.56						Ninth Supplemental Indenture, dated as of November 5, 2021, between International Transmission Company and The Bank of New York Mellon Trust Company, N.A. (as successor to BNY Midwest Trust Company), as trustee (including Form of 2.93% First Mortgage Bonds, Series I, due 2052 and Form of 2.93% First Mortgage Bonds, Series J, due 2052) (filed with Registrant’s Form 8-K on January 14, 2022)

*10.27						Deferred Compensation Plan (filed with Registrant’s Registration Statement on Form S-1, as amended, Reg. No. 333-123657)

10.51						Form of Amended and Restated Easement Agreement between Consumers Energy Company and Michigan Electric Transmission Company (filed with Registrant’s Form 10-Q for the quarter ended September 30, 2006)

*10.81						Executive Supplemental Retirement Plan (filed with Registrant’s Form 10-K for the year ended December 31, 2008 )

*10.109						Employment Agreement between ITC Holdings Corp. and Linda H. Blair, effective as of December 21, 2012 (filed with Registrant’s Form 8-K on December 26, 2012)

*10.110						Employment Agreement between ITC Holdings Corp. and Jon E. Jipping, effective as of December 21, 2012 (filed with Registrant’s Form 8-K on December 26, 2012)

*10.111						Employment Agreement between ITC Holdings Corp. and Daniel J. Oginsky, effective as of December 21, 2012 (filed with Registrant’s Form 8-K on December 26, 2012)

*10.120						First Amendment to Executive Supplemental Retirement Plan, dated as of May 16, 2013 (filed with Registrant’s Form 10-Q for the quarter ended June 30, 2013)

*10.122						Recoupment Policy and Related Consent, effective January 1, 2014 (filed with Registrant’s Form 8-K on December 2, 2013)

*10.150						Employment Agreement between ITC Holdings Corp. and Christine Mason Soneral, effective as of February 3, 2015 (filed with Registrant’s Form 10-Q for the quarter ended June 30, 2015)

*10.168						Letter Agreement, dated as of October 14, 2016, between ITC Holdings Corp. and Linda H. Blair (filed with Registrant’s Form 8-K on October 12, 2016)

*10.172						Employment Agreement between ITC Holdings Corp. and Gretchen L. Holloway, effective as of July 10, 2017 (filed with Registrant’s Form 10-K for the year ended December 31, 2020)

*10.173						Letter Agreement, dated as of October 12, 2016 between ITC Holdings Corp. and Christine Mason Soneral (filed with Registrant’s Form 10-K for the year ended December 31, 20 16 )

*10.176						2017 Omnibus Plan, effective February 27, 2017 (filed with Registrant’s Form 10-Q for the quarter ended March 31, 2017)

*10.177						Summary of 2017 Annual Incentive Plan (filed with Registrant’s Form 10-Q for the quarter ended March 31, 2017)

*10.178						Form of Service-Based Unit Award Agreement under 2017 Omnibus Plan (February 2017) (filed with Registrant’s Form 10-Q for the quarter ended March 31, 2017)

*10.179						Form of Performance-Based Unit Award Agreement under 2017 Omnibus Plan (February 2017) (filed with Registrant’s Form 10-Q for the quarter ended March 31, 2017)

*10.182						Amendment to 2017 Omnibus Plan, dated as of July 10, 2017 (filed with Registrant’s Form 10-Q for the quarter ended June 30, 2017)

*10.183						ITC Holdings Corp. Director Deferred Compensation Plan, effective March 1, 2017 (filed with Registrant’s Form 10-Q for the quarter ended June 30, 2017)

10.184						ITC Holdings Revolving Credit Agreement, dated as of October 23, 2017, among ITC Holdings Corp., with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, JPMorgan Chase Bank, N.A., as administrative agent for the Lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on October 23, 2017)

122

Table of Contents


10.185						ITCTransmission Revolving Credit Agreement, dated as of October 23, 2017, among International Transmission Company, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, JPMorgan Chase Bank, N.A., as administrative agent for the Lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on October 23, 2017)

10.186						METC Revolving Credit Agreement, dated as of October 23, 2017, among Michigan Electric Transmission Company, LLC, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, JPMorgan Chase Bank, N.A., as administrative agent for the Lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on October 23, 2017)

10.187						ITC Midwest Revolving Credit Agreement, dated as of October 23, 2017, among ITC Midwest LLC, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, JPMorgan Chase Bank, N.A., as administrative agent for the Lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on October 23, 2017)

10.188						ITC Great Plains Revolving Credit Agreement, dated as of October 23, 2017, among ITC Great Plains, LLC, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, JPMorgan Chase Bank, N.A., as administrative agent for the Lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on October 23, 2017)

*10.190						International Transmission Company Executive Deferred Compensation Plan, effective January 1, 2019 (filed with Registrant’s Form 10-K for the year ended December 31, 20 18 )

*10.191						ITC Holdings Corp. Director Deferred Compensation Plan, effective January 1, 2019 (filed with Registrant’s Form 10-K for the year ended December 31, 2018 )

*10.192						Letter Agreement, effective as of February 18, 2019, between ITC Holdings Corp. and Jon E. Jipping (filed with Registrant’s Form 8-K on February 22, 2019)

10.194						ITC Holdings Amendment and Restatement Agreement dated as of January 10, 2020, among ITC Holdings Corp., the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, Wells Fargo Bank, National Association, in its capacity as successor administrative agent and JPMorgan Chase Bank, N.A., in its capacity as resigning administrative agent, amending and restating as of January 10, 2020 in the form attached as Exhibit A thereto the Revolving Credit Agreement, dated as of October 23, 2017, among ITC Holdings Corp., the banks, financial institutions and other institutional party thereto, JPMorgan Chase Bank, N.A., as administrative agent for the lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on January 10, 2020)

10.195						ITCTransmission Amendment and Restatement Agreement dated as of January 10, 2020, among International Transmission Company, the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, Wells Fargo Bank, National Association, in its capacity as successor administrative agent and JPMorgan Chase Bank, N.A., in its capacity as resigning administrative agent, amending and restating as of January 10, 2020 in the form attached as Exhibit A thereto the Revolving Credit Agreement, dated as of October 23, 2017, among International Transmission Company, the banks, financial institutions and other institutional party thereto, JPMorgan Chase Bank, N.A., as administrative agent for the lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on January 10, 2020)

123

Table of Contents


10.196						METC Amendment and Restatement Agreement dated as of January 10, 2020, among Michigan Electric Transmission Company, LLC, the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, Wells Fargo Bank, National Association, in its capacity as successor administrative agent and JPMorgan Chase Bank, N.A., in its capacity as resigning administrative agent, amending and restating as of January 10, 2020 in the form attached as Exhibit A thereto the Revolving Credit Agreement, dated as of October 23, 2017, among Michigan Electric Transmission Company, LLC, the banks, financial institutions and other institutional party thereto, JPMorgan Chase Bank, N.A., as administrative agent for the lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on January 10, 2020)

10.197						ITC Midwest Amendment and Restatement Agreement dated as of January 10, 2020, among ITC Midwest LLC, the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, Wells Fargo Bank, National Association, in its capacity as successor administrative agent and JPMorgan Chase Bank, N.A., in its capacity as resigning administrative agent, amending and restating as of January 10, 2020 in the form attached as Exhibit A thereto the Revolving Credit Agreement, dated as of October 23, 2017, among ITC Midwest LLC, the banks, financial institutions and other institutional party thereto, JPMorgan Chase Bank, N.A., as administrative agent for the lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on January 10, 2020)

10.198						ITC Great Plains Amendment and Restatement Agreement dated as of January 10, 2020, among ITC Great Plains, LLC, the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, Wells Fargo Bank, National Association, in its capacity as successor administrative agent and JPMorgan Chase Bank, N.A., in its capacity as resigning administrative agent, amending and restating as of January 10, 2020 in the form attached as Exhibit A thereto the Revolving Credit Agreement, dated as of October 23, 2017, among ITC Great Plains, LLC, the banks, financial institutions and other institutional party thereto, JPMorgan Chase Bank, N.A., as administrative agent for the lenders, JPMorgan Chase Bank, N.A., Barclays Bank PLC, Wells Fargo Securities, LLC, The Bank of Nova Scotia and Mizuho Bank, Ltd., as joint lead arrangers and joint bookrunners, Barclays Bank PLC and Wells Fargo Bank, National Association, as co-syndication agents and The Bank of Nova Scotia and Mizuho Bank, Ltd. as co-documentation agents (filed with Registrant’s Form 8-K on January 10, 2020)

*10.200						2017 Omnibus Plan, as amended July 10, 2017 and February 4, 2020 (filed with Registrant’s Form 10-K for the year ended De cember 31, 20 19 )

*10.201						Executive Omnibus Plan, effective February 4, 202 0 . (filed with Registrant’s Form 10-K for the year ended D e c e m b e r 3 1 , 2 0 1 9 )

*10.202						Form of Performance-Based Unit Award Agreement under Executive Omnibus Plan (January 2020). (f iled with Registrant’s Form 10-K for the year ended December 31, 2019 )

*10.203						Employment Agreement between ITC Holdings Corp. and Krista K. Tanner, effective as of February 18, 2019 (filed with Registrant’s Form 10-K for the year ended December 31, 2021)

*10.204						Fortis Inc. 2020 Restricted Share Unit Plan, effective January 1, 2020 (filed with Registrant’s Form 10-Q for the quarter ended March 31, 2020)

*10.205						Form of Restricted Share Unit Grant Agreement under Fortis Inc. 2020 Restricted Share Unit Plan (January, 2020) (filed with Registrant’s Form 10-Q for the quarter ended March 31, 2020)

*10.206						Separation and Release Agreement, effective as of May 18, 2020, between ITC Holdings Corp. and Daniel J. Oginsky (filed with Registrant’s Form 10-K for the year ended December 31, 2020)

10.207						Amendment No. 1 to Credit Agreement, dated as of May 17, 2021, among ITC Holdings Corp., with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, and Wells Fargo Bank, National Association, in its capacity as administrative agent (filed with Registrant’s Form 8-K on May 17, 2021)

10.208						Amendment No. 1 to Credit Agreement, dated as of May 17, 2021, among International Transmission Company, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, and Wells Fargo Bank, National Association, in its capacity as administrative agent (filed with Registrant’s Form 8-K on May 17, 2021)

124

Table of Contents


10.209						Amendment No. 1 to Credit Agreement, dated as of May 17, 2021, among Michigan Electric Transmission Company, LLC, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, and Wells Fargo Bank, National Association, in its capacity as administrative agent (filed with Registrant’s Form 8-K on May 17, 2021)

10.210						Amendment No. 1 to Credit Agreement, dated as of May 17, 2021, among ITC Midwest LLC, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, and Wells Fargo Bank, National Association, in its capacity as administrative agent (filed with Registrant’s Form 8-K on May 17, 2021)

10.211						Amendment No. 1 to Credit Agreement, dated as of May 17, 2021, among ITC Great Plains, LLC, with the banks, financial institutions and other institutional lenders listed on the respective signature pages thereof, and Wells Fargo Bank, National Association, in its capacity as administrative agent (filed with Registrant’s Form 8-K on May 17, 2021)

***10.212						Executive Omnibus Plan, as amended November 11, 2021

***10.213						Fortis Inc. 2020 Restricted Share Unit Plan, as amended January 1, 2022

***10.214						Employment Agreement between ITC Holdings Corp. and Brian Slocum, effective as of February 14, 2022

**21						List of Subsidiaries

**31.1						Certification of Chief Executive Officer pursuant to Rule 13a-14 of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

**31.2						Certification of Chief Financial Officer pursuant to Rule 13a-14 of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

**32						Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

**101.INS						XBRL Instance Document - the instance document does not appear in the Interactive Data file because its XBRL tags are embedded within the Inline XBRL document

**101.SCH						Inline XBRL Taxonomy Extension Schema

**101.CAL						Inline XBRL Taxonomy Extension Calculation Linkbase

**101.DEF						Inline XBRL Taxonomy Extension Definition Database

**101.LAB						Inline XBRL Taxonomy Extension Label Linkbase

**101.PRE						Inline XBRL Taxonomy Extension Presentation Linkbase

**104						The cover page from the Company’s Annual Report on Form 10-K for the year ended December 31, 2021 (formatted in Inline XBRL and contained in Exhibit 101)

___________________________


*						Management contract or compensatory plan or arrangement
**						Filed herewith
***						Management contract or compensatory plan or arrangement filed herewith

125

Table of Contents

SCHEDULE I — Condensed Financial Information of Registrant

ITC HOLDINGS CORP.

CONDENSED STATEMENTS OF FINANCIAL POSITION (PARENT COMPANY ONLY)


	December 31,
(In millions of USD, except share data)	2021		2020
ASSETS
Current assets
Cash and cash equivalents	$	3	$	2
Accounts receivable from subsidiaries	20		9
Intercompany tax receivable from subsidiaries	16		8

Prepaid and other current assets	3		—
Advances to subsidiaries	50		—
Total current assets	92		19
Other assets
Investment in subsidiaries	5,784		5,496
Deferred income taxes	142		160
Advances to subsidiaries	4		54
Other assets	112		101
Total other assets	6,042		5,811
TOTAL ASSETS	$	6,134	$	5,830
LIABILITIES AND STOCKHOLDER’S EQUITY
Current liabilities


Accrued compensation	$	72	$	55
Accrued interest	23		23
Debt maturing within one year	654		67
Other current liabilities	8		8
Total current liabilities	757		153
Accrued pension and postretirement liabilities	52		59

Other liabilities	78		58
Long-term debt (net of deferred financing fees and discount of $17 and $21, respectively)	2,773		3,266
TOTAL LIABILITIES	3,660		3,536
STOCKHOLDER’S EQUITY
Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December 31, 2021 and 2020	892		892
Retained earnings	1,584		1,410
Accumulated other comprehensive loss	(2)		(8)
Total stockholder’s equity	2,474		2,294
TOTAL LIABILITIES AND STOCKHOLDER’S EQUITY	$	6,134	$	5,830

See notes to condensed financial statements (parent company only).

126

Table of Contents

SCHEDULE I — Condensed Financial Information of Registrant

ITC HOLDINGS CORP.

CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (PARENT COMPANY ONLY)


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Other income (expense), net	$	3	$	5	$	5
General and administrative expense	(30)		(20)		(25)
Taxes other than income taxes	(2)		(1)		(2)
Interest expense	(129)		(122)		(119)


LOSS BEFORE INCOME TAXES	(158)		(138)		(141)
INCOME TAX BENEFIT	(46)		(43)		(44)
LOSS AFTER TAXES	(112)		(95)		(97)
EQUITY IN SUBSIDIARIES’ NET EARNINGS	518		502		525
NET INCOME	406		407		428
OTHER COMPREHENSIVE INCOME (LOSS)
Derivative instruments (net of tax of $2 for the year ended December 31, 2021, $7 for the year ended December 31, 2020, $1 for the year ended December 31, 2019	6		(15)		3

TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	6		(15)		3
TOTAL COMPREHENSIVE INCOME	$	412	$	392	$	431

See notes to condensed financial statements (parent company only).

127

Table of Contents

SCHEDULE I — Condensed Financial Information of Registrant

ITC HOLDINGS CORP.

CONDENSED STATEMENTS OF CASH FLOWS (PARENT COMPANY ONLY)


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$	406	$	407	$	428
Adjustments to reconcile net income to net cash used in operating activities:
Equity in subsidiaries' earnings	(518)		(502)		(525)
Dividends from subsidiaries	10		3		3
Deferred and other income taxes	(41)		(46)		(51)
Net intercompany tax payments from (to) subsidiaries	56		33		14
Share-based compensation	25		15		18
Other	4		2		6
Changes in assets and liabilities, exclusive of changes shown separately:
Accounts receivable from subsidiaries	(2)		9		9
Intercompany tax receivable from subsidiaries	(9)		(4)		11
Income tax receivable	—		—		1



Accrued compensation	4		(12)		22



Other current and non-current assets and liabilities, net	(2)		(3)		—
Net cash used in operating activities	(67)		(98)		(64)
CASH FLOWS FROM INVESTING ACTIVITIES
Equity contributions to subsidiaries	(51)		(88)		(120)
Return of capital from subsidiaries	259		228		239
Advances to subsidiaries	—		(50)		—
Other	1		(2)		(1)
Net cash provided by investing activities	209		88		118
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt	—		700		—
Borrowings under revolving credit agreement	93		293		72
Borrowings under term loan credit agreements	—		200		200
Net issuance of commercial paper	88		(133)		200
Retirement of long-term debt — including extinguishment of debt costs	—		—		(203)
Repayments of revolving credit agreement	(91)		(290)		(75)
Repayments of term loan credit agreement	—		(400)		—
Dividends to ITC Investment Holdings	(232)		(330)		(250)






Settlement of interest rate swaps	—		(23)		—
Other	1		(7)		—
Net cash provided by (used in) financing activities	(141)		10		(56)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	1		—		(2)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — Beginning of period	2		2		4
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — End of period	$	3	$	2	$	2

See notes to condensed financial statements (parent company only).

128

Table of Contents

SCHEDULE I — Condensed Financial Information of Registrant

ITC HOLDINGS CORP.

NOTES TO CONDENSED FINANCIAL STATEMENTS (PARENT COMPANY ONLY)

1. GENERAL

For ITC Holdings Corp.’s (“ITC Holdings,” “we,” “our” and “us”) presentation (Parent Company only), the investment in subsidiaries is accounted for using the equity method. The condensed parent company financial statements and notes should be read in conjunction with the consolidated financial statements and notes of ITC Holdings appearing in this Annual Report on Form 10-K. Certain prior period amounts in the financial statements and notes have been reclassified to conform to the current period presentation for comparative purposes.

As a holding company with no business operations, ITC Holdings’ assets consist primarily of investments in our subsidiaries. ITC Holdings’ material cash inflows are only from dividends and other payments received from our subsidiaries, the proceeds raised from the sale of debt securities, issuances under our commercial paper program and borrowings under our revolving and term loan term credit agreements. ITC Holdings may not be able to access cash generated by our subsidiaries in order to fulfill cash commitments. The ability of our subsidiaries to make dividend and other payments to us is subject to the availability of funds after taking into account their respective funding requirements, the terms of their respective indebtedness, the regulations of the FERC under the FPA and applicable state laws. In addition, there are practical limitations on using the net assets of each of our Regulated Operating Subsidiaries as of December 31, 2021 for dividends based on management's intent to maintain the FERC-approved capital structure targeting 60% equity and 40% debt for each of our Regulated Operating Subsidiaries. These net assets are included in Schedule I as the line-item “Investments in subsidiaries.” Each of our subsidiaries, however, is legally distinct from us and has no obligation, contingent or otherwise, to make funds available to us.

Recent Developments Regarding the COVID-19 Pandemic

2. DEBT

As of December 31, 2021, the maturities of our debt outstanding were as follows:


(In millions of USD)
2022	$	655
2023	250
2024	439
2025	—
2026	400
2027 and thereafter	1,700
Total	$	3,444

129

Table of Contents

Refer to Note 9 to the consolidated financial statements for additional information on the ITC Holdings Senior Notes, the ITC Holdings Revolving Credit Agreements, the ITC Holdings Commercial Paper Program and the ITC Holdings Derivative Instruments and Hedging Activities.

Fixed Rate Debt

Based on the borrowing rates obtained from third party lending institutions currently available for bank loans with similar terms and average maturities from active markets, the fair value of the ITC Holdings Senior Notes was $3,516 million and $3,670 million at December 31, 2021 and 2020, respectively. The total book value of the ITC Holdings Senior Notes, net of discount and deferred financing fees, was $3,233 million and $3,229 million at December 31, 2021 and 2020, respectively. The fair values of the ITC Holdings Senior Notes represent Level 2 under the three-tier hierarchy described in Note 12 to the consolidated financial statements.

Revolving Credit Agreements

At December 31, 2021 and 2020, we had $39 million and $37 million, respectively, outstanding under our revolving credit agreements, which are variable rate loans. The fair value of these loans approximates book value based on the borrowing rates currently available for variable rate loans obtained from third party lending institutions. The fair values of the revolving credit agreements represent Level 2 under the three-tier hierarchy described in Note 12 to the consolidated financial statements.

Other Financial Instruments

3. RELATED-PARTY TRANSACTIONS

Net Intercompany Receivables and Payables

We may incur charges from our subsidiaries for general corporate expenses incurred. In addition, we may perform additional services for, or receive additional services from our subsidiaries. These transactions are in the normal course of business and payments for these services are settled through accounts receivable and accounts payable, as necessary. We generally settle our intercompany balances with our affiliates on a net basis monthly.

Retirement Benefits

We are the plan sponsor for a pension plan, other postretirement plans and a defined contribution plan. The benefits-related expenses recorded by our affiliates result from the inclusion of benefit costs as a component of the total charge for services performed by our employees under the cost assignment and allocation methods used by us and our subsidiaries.

Equity Transactions


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Equity contributions to subsidiaries	$	(51)	$	(88)	$	(120)
Dividends from subsidiaries (a)	10		3		3
Return of capital from subsidiaries (a)	259		228		239

____________________________

(a)Includes ITCTransmission, MTH, ITC Midwest and other subsidiaries.

Intercompany Tax Sharing Arrangement

As discussed in Note 1 to the condensed financial statements of the parent company, we are a holding company with no business operations. We file consolidated income tax returns that include our affiliates, which are taxed as a corporation for federal and Michigan income tax purposes. We operate under an intercompany tax sharing arrangement with our subsidiaries and as a result may receive or pay federal and state income tax based on their stand-alone company tax positions.

130

Table of Contents


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Net income tax payments (to) from: (a)
ITCTransmission	$	24	$	17	$	7
METC	15		9		4
ITC Midwest	10		1		3
ITC Great Plains	6		6		(1)
ITC Interconnection	1		—		1

____________________________

(a)The net income tax payments were pursuant to intercompany tax sharing arrangements, and the total of these tax payments is presented as a net cash outflow or inflow from operating activities in the condensed parent company statements of cash flows. Other reconciling items between the parent company and the consolidated tax liabilities are presented as deferred and other income taxes in the adjustments to reconcile net income to net cash provided by operating activities. Additionally, ITC Holdings paid its subsidiaries for NOLs utilized by the consolidated group.

Intercompany Loan Agreement

On September 21, 2020, we advanced an intercompany loan to ITCTransmission totaling $50 million, due September 21, 2022, which remained outstanding at December 31, 2021. On January 14, 2022, ITCTransmission repaid the intercompany loan in full with proceeds from the issuance of First Mortgage Bonds on January 14, 2022. We received interest payments of $1 million during the year ended December 31, 2021 from ITCTransmission associated with this intercompany loan. Additionally, at December 31, 2021 we had a $4 million intercompany loan with ITC Interconnection, due June 1, 2046. During the year ended December 31, 2021, we received principal and interest payments of $1 million from ITC Interconnection associated with this intercompany loan.

4. SUPPLEMENTAL FINANCIAL INFORMATION

Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the condensed statements of financial position that sum to the total of the same such amounts shown in the condensed statements of cash flows:


	December 31,
(In millions of USD)	2021		2020		2019		2018
Cash and cash equivalents	$	3	$	2	$	2	$	3
Restricted cash included in:
Other non-current assets	—		—		—		1
Total cash, cash equivalents and restricted cash	$	3	$	2	$	2	$	4

Supplementary Cash Flows Information


	Year Ended December 31,
(In millions of USD)	2021		2020		2019
Supplementary cash flows information:
Interest paid	$	119	$	116	$	117

Income taxes paid	—		2		—
Income tax refunds received	—		2		3

ITEM 16. FORM 10-K SUMMARY.

Not applicable.

131

Table of Contents

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized on February 10, 2022.


ITC HOLDINGS CORP.
By:			/s/ LINDA H. APSEY
			Linda H. Apsey
			President and Chief Executive Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.


Signature	Title	Date

/s/ LINDA H. APSEY	President and Chief Executive	February 10, 2022
Linda H. Apsey	Officer (principal executive officer)

/s/ GRETCHEN L. HOLLOWAY	Senior Vice President and Chief Financial Officer	February 10, 2022
Gretchen L. Holloway	(principal financial and accounting officer)

/s/ SANDRA E. PIERCE	Director and Chairman	February 10, 2022
Sandra E. Pierce

/s/ ROBERT A. ELLIOTT	Director	February 10, 2022
Robert A. Elliott

/s/ LEANNE M. BELL	Director	February 10, 2022
Leanne M. Bell

/s/ DEBORA FRODL	Director	February 10, 2022
Debora Frodl

/s/ RONNIE D. HAWKINS, JR	Director	February 10, 2022
Ronnie D. Hawkins, Jr

/s/ DAVID G. HUTCHENS	Director	February 10, 2022
David G. Hutchens

/s/ JAMES P. LAURITO	Director	February 10, 2022
James P. Laurito

/s/ JOCELYN H. PERRY	Director	February 10, 2022
Jocelyn H. Perry

/s/ KEVIN L. PRUST	Director	February 10, 2022
Kevin L. Prust

/s/ A. DOUGLAS ROTHWELL	Director	February 10, 2022
A. Douglas Rothwell

132

1 " = "1" "Tor#: 10357618.2" "" Tor#: 10357618.2 ITC HOLDINGS CORP. EXECUTIVE OMNIBUS PLAN Effective as of February 4, 2020 Amended as of November 11, 2021 PREAMBLE AND DEFINITIONS Title The plan herein, as amended or restated from time to time, shall be called the “Executive Omnibus Plan” and is referred to herein as the “Plan”. Purpose of the Plan The purpose of the Plan is to (i) promote a greater alignment of interests between Participants and Fortis, (ii) foster the growth and success of the business of the Company and Fortis in accordance with the vision of both the Company and Fortis, (iii) ensure that Participants are focused on both the Company’s and Fortis’ business objectives, and (iv) assist in the attraction, retention and motivation of Participants. Defined Terms In the Plan, the following terms have the respective meanings set out below and grammatical variations of such terms shall have corresponding meanings: “Affiliate” means an entity that directly, or indirectly through one or more intermediaries, controls or is controlled by, or is under common control with, the Person specified. “Agreement” means the written document that sets forth the terms of a Participant’s Award. With respect to Incentive Awards, the written document need not be signed by the Company or the Participant. “Applicable Law” means any applicable provision of law, domestic or foreign, including the Code, as the same may be amended, supplemented or replaced from time to time, together with all regulations, rules, policy statements, rulings, notices, orders or other instruments promulgated thereunder and any applicable rules or policies of any stock exchange. “Award” means any form of Unit or Incentive Award granted under the Plan. “Board” means the Board of Directors of the Company. “Business Day” means any day, other than a Saturday, Sunday or statutory or civic holiday in the State of Michigan.

2 “Cause” means (a) if the Employee is a party to a written employment agreement with the Company or a Subsidiary, “Cause” as defined in such agreement, as in effect from time to time, and (b) in all other cases, (i) Participant’s continued failure substantially to perform Participant’s duties to the Company or its Affiliates (other than as a result of total or partial incapacity due to physical or mental illness) for a period of 10 days following written notice by the Company to Participant of such failure, (ii) dishonesty in the performance of Participant’s duties hereunder, (iii) Participant’s conviction of, or plea of nolo contendere to a crime constituting (x) a felony under the laws of the United States or any state thereof, or (y) a misdemeanor involving moral turpitude, (iv) Participant’s willful malfeasance or willful misconduct in connection with Participant’s duties hereunder or any act or omission which is injurious to the financial condition or business reputation of the Company or its Affiliates, or (v) Participant’s breach of any non-compete or confidentiality obligations to the Company or its Affiliates. “Change of Control” means the occurrence of any one or more of the following events: (a) the acquisition of ownership, directly or indirectly, beneficially or of record, by any Person or combination of Persons acting jointly or in concert with each other, of Voting Securities representing more than 50% of the aggregate ordinary voting power represented by the issued and outstanding Voting Securities; (b) the sale or disposition in a single transaction or a series of related transactions of more than 50% of the common shares of the Company to a Person not an Affiliate of Fortis at the time of such sale or disposition and who does not become an Affiliate of Fortis as a result of such transaction or series of related transactions; (c) the sale, lease, exchange or other disposition, in a single transaction or a series of related transactions, of assets, rights or properties of (i) Fortis and/or any of its subsidiaries which have an aggregate book value greater than 50% of the book value of the assets, rights and properties of Fortis and its subsidiaries on a consolidated basis or (ii) the Company which constitute all or substantially all of the assets, rights or properties of the Company, to any other Person or entity, other than a disposition to Fortis or any wholly owned subsidiary of Fortis; (d) a resolution is adopted by the Board or the Fortis Board to wind-up, dissolve or liquidate the Company or Fortis; (e) as a result of or in connection with: (i) a contested election of directors of the Fortis Board; or (ii) a consolidation, merger, amalgamation, arrangement or other reorganization or acquisition involving Fortis or any of its Affiliates and another corporation or other entity, the nominees named in the most recent management information circular of Fortis for election to the Fortis Board shall not constitute a majority of the Fortis Board; or

3 (f) the Fortis Board or the Board adopts a resolution to the effect that a Change of Control as defined herein has occurred or is imminent. “Change of Control Redemption Date” means the Trading Day that is immediately prior to the effective date of the consummation of the event(s) resulting in the Change of Control. “Code” means the United States Internal Revenue Code of 1986, as amended. “Committee” means the Company’s Governance and Human Resources Committee or other committee of Directors designated by the Board from time to time to administer the Plan and consisting of not less than three members of the Board. “Common Shares” means the common shares of Fortis. “Company” means ITC Holdings Corp., and any successor corporation whether by amalgamation, merger or otherwise. “Director” means a director of the Company who is not an Employee. “Disability” means total and permanent disability, as defined in the Company’s long-term disability benefits program, as in effect from time to time; provided, however, that for purposes of a Code Section 409A distribution event, “disability” shall be defined under Code Section 409A and the regulations thereunder. “Employee” means an employee of the Company, Fortis, or any of their Affiliates. “Fortis” means Fortis Inc. and any successor corporation whether by amalgamation, merger or otherwise. “Fortis Board” means the board of directors of Fortis. “Good Reason” means the occurrence, after a Change of Control, of any of the following events without the Participant's written consent: (a) a reduction in the base salary of the Participant other than a general reduction that affects all similarly situated executives in substantially the same proportions; (b) a reduction in the Participant’s target short term incentive or long term incentive opportunity, other than a general reduction that affects all similarly situated executives in substantially the same manner; (c) any failure by the Company or a Subsidiary thereof, as applicable, to comply with any material terms of the Participant's employment as in effect immediately prior to such Change of Control, other than an inadvertent failure not occurring in bad faith and which is remedied by the Company or such Subsidiary promptly after receipt of written notice thereof given by the Participant;

4 (d) any material adverse change in the Participant’s duties, responsibilities, authority, title, status or reporting structure as in effect immediately prior to the Change of Control; (e) the discontinuation or amendment of any equity incentive plan, short term incentive plan, employee benefit plan or other material fringe benefit or perquisite, if such discontinuation or amendment results in less favourable treatment of the Participant, in the aggregate (unless minor or insignificant), taking into consideration any related amendment or replacement plan, benefit or perquisite, as applicable; or (f) the Company a Subsidiary thereof, as applicable, requiring the Participant to be based at any office or location other than (i) within 30 miles of the Participant's office or location immediately prior to the Change of Control or (ii) at any other office or location previously agreed to in writing by the Participant; “Grant Date” means January 1st of the year in which the Committee authorizes an Award, or such later or earlier date as shall be designated by the Committee and set forth in the Applicable Agreement. “Incentive Award” means an Award granted pursuant to Section 4.2 of the Plan. “Involuntary Termination Without Cause” means the termination of a Participant’s Service other than due to the Participant’s death, Disability, Retirement, voluntary resignation or for Cause. “Involuntary Employment Action” as to a Participant means: (a) an Involuntary Termination Without Cause, or (b) termination of Service by the Participant for Good Reason; “Involuntary Redemption Date” means the Trading Day that is immediately prior to the effective date of an Involuntary Employment Action; “Market Price” at any date in respect of the Common Shares means the volume weighted average trading price of the Common Shares determined by dividing the aggregate total value of the Common Shares traded on the TSX during the five Trading Days immediately preceding such date by the aggregate total volume of the Common Shares traded on the TSX during such five Trading Days (or, if such Common Shares are not then listed and posted for trading on the TSX, on such stock exchange on which such Common Shares are listed for trading as may be selected for such purpose by the Committee). In the event that such Common Shares are not listed and posted for trading on any stock exchange, the Market Price shall be the fair market value of such Common Shares as determined by the Committee in its sole discretion acting in good faith. “Participant” means any (i) Employee with a title of Vice President or higher to whom an Award has been granted in accordance with the terms set out herein and (ii) any individual to whom an Award has been granted upon the condition that such individual becomes an

5 Employee with a title of Vice President or higher, provided that any such Award shall be deemed granted and outstanding only on the date that the individual becomes an Employee with a title of Vice President or higher. “Payment Criteria”, in respect of any Performance-Based Unit or Incentive Award, means the performance criteria set out in the Agreement in respect of such Unit or Award that must be satisfied as a condition to payment. “Payment Criteria Period”, in respect of any Performance-Based Unit or Incentive Award, means the period during which performance is to be measured for purposes of such Unit or Award. “Payment Date” means, unless otherwise specified herein (a) with respect to Performance-Based Units or Incentive Awards, the last day of the Payment Criteria Period, and (b) with respect to Service-Based Units, the Vesting Date as determined in accordance with the Participant’s Agreement. “Payout Amount” means, with respect to each Award, the amount payable on the Payment Date, determined in accordance with Section 4.3 or 5.1. “Payout Percentage”, in respect of any Performance-Based Unit or Incentive Award, means the percentage of the target amount of the Unit or Award determined by the Committee to have been earned for purposes of the calculation of the Payout Amount in accordance with Section 5.1. “Peer Group” means the group of North American regulated public utilities determined from time to time by the Fortis Board (or a committee thereof) in accordance with its guidelines and used for purposes of executive compensation decisions by Fortis and its Affiliates. “Performance-Based Unit” means a Unit with respect to which the Payout Amount is determined in accordance with Section 5.1(a). “Person” includes any individual, corporation, partnership, firm, joint venture, syndicate, association, trust, government, governmental agency and any other form of entity or organization. “Restatement” means a material restatement of financial results of the Company and its consolidated subsidiaries. “Restatement Period” means the financial periods of the Company covered by a Restatement. “Retirement” means the retirement of a Participant from Service with the Company or a Subsidiary upon or after completing 10 years of Service after attaining the age of 45 if the Participant has provided the Company with at least 90 days’ written notice of such retirement.

6 “Service” means the Participant’s period of service as an Employee with the Company, Fortis, or any of their Affiliates. “Service-Based Unit” means a Unit with respect to which the Payout Amount is determined in accordance with Section 5.1(b). “Separation from Service” means a termination of Service in such a manner as to constitute a “separation from service” as defined under Code Section 409A. “Specified Employee” means a “specified employee” as determined by the Company in accordance with Code Section 409A. “Subsidiary” means a corporation or other entity that would be deemed a subsidiary of the Company pursuant to Code Section 424(f). “Termination Date” has the meaning ascribed thereto in Section 6.1. “Trading Day” means any date on which the TSX is open for the trading of the Common Shares (or, if such Common Shares are not then listed and posted for trading on the TSX, on such stock exchange on which such Common Shares are listed and posted for trading as may be selected for such purpose by the Committee). “TSX” means the Toronto Stock Exchange or any successor thereto. “Unit” means a notional unit evidenced by an entry on the books of the Company or its agent, which represents the right of a Participant, subject to the provisions herein, to receive an amount equal to the Market Price of a Common Share on the applicable Payment Date. Units granted under the Plan shall consist of Service-Based Units and/or Performance-Based Units. “Unit Account” means the account maintained for a Participant on the books of the Company or its agent into which Units will be credited in accordance with Article IV hereof. “Vest”, “Vested” or “Vesting” means the extent to which the payment conditions of an Award granted hereunder have been satisfied in accordance with the Plan and the terms of any respective Agreement pursuant to which such Award was granted or issued. “Vesting Date” means the date on which a Service-Based Unit Vests in accordance with the terms and conditions of the Plan and the related Agreement. “Voting Securities” means the Common Shares and any other shares entitled to vote for the election of directors of Fortis and shall include any security, whether or not issued by Fortis, which are not shares entitled to vote for the election of directors of Fortis but are convertible into or exchangeable for shares which are entitled to vote for the election of directors of Fortis including any options or rights to purchase such shares or securities. INTERPRETATION

7 Governing Law The Plan shall be interpreted and enforced in accordance with the laws of the State of Michigan, without regard to the conflict of law principles thereof. The participation of a Participant in the Plan shall be construed as acceptance of the terms and conditions of the Plan by such Participant and as the Participant’s agreement to be bound thereby. Severability If any provision of the Plan is determined by a court of competent jurisdiction to be invalid, illegal or unenforceable in any respect, all other provisions of this Plan shall nevertheless remain in full force and effect so long as the economic or legal substance of the transactions contemplated hereby is not affected in any manner materially adverse to any party hereto. References The division of this Plan into articles and sections and the insertion of headings are for convenience of reference only and shall not affect the construction or interpretation of this Plan. Words importing the singular number only shall include the plural and vice versa and words importing the use of any gender shall include all genders. Use of the term “including” shall in each case be construed to mean “including without limitation.” Fractional Units Fractional Units are permitted under the Plan. Code Section 409A (a) It is intended that each Award granted under this Plan shall be exempt from or comply with the requirements of Code Section 409A. This Plan shall be construed, administered, and governed in a manner that effects such intent, and the Committee shall not take any action that would be inconsistent with such intent. Without limiting the foregoing, no Award shall be deferred, accelerated, extended, paid out, settled, adjusted, substituted, exchanged or modified in a manner that would cause the Award to fail to satisfy the conditions of an applicable exemption from the requirements of Code Section 409A or otherwise would subject the Participant to additional tax imposed under Code Section 409A. Although the Company will use good faith efforts to avoid the imposition of taxation, interest and penalties under Code Section 409A, the tax treatment of the benefits provided under this Plan is not warranted or guaranteed. Neither the Company, its Subsidiaries nor their respective directors, officers, employees or advisers shall be held liable for any taxes, interest, penalties or other monetary amounts owed by a Participant (or any other individual claiming a benefit through the Participant) as a result of this Plan. (b) To the extent required to comply with Code Section 409A, references in this Plan to a termination or cessation of employment or like terms shall mean a Separation from Service.

8 (c) Notwithstanding anything in the Plan to the contrary, if at the time of a Participant’s Separation from Service, the Participant is considered to be a Specified Employee, to the extent any Award is subject to the requirements of Code Section 409A and is payable upon the Participant’s Separation from Service, such payment shall not commence prior to the first Business Day following the date which is six months after the Participant’s Separation from Service (or if earlier than the end of the six month period, the date of the Participant’s death). For the avoidance of doubt, the provisions of this Section 2.5(c) shall not apply to any payment that becomes due on a Payment Date that occurs prior to the Participant’s Separation from Service, any payment that becomes due as a result of the Participant’s death, or any payment with respect to an Award that qualifies for an exception to the requirements of Code Section 409A. (d) Notwithstanding the definition of “Good Reason” in Section 1.3 of the Plan, a Participant shall not be considered to have terminated his or her employment for Good Reason unless the termination qualifies for the safe harbor provided in Section 1.409A-1(n)(2)(ii) of the Treasury Regulations. ESTABLISHMENT OF THE PLAN Establishment The Company is establishing the Plan for Participants which shall be effective as of January 1, 2020. No Additional Rights Nothing herein contained shall be deemed to give any Person the right to be retained as an Employee or to otherwise be retained in the service of the Company or a Subsidiary. Units are not Common Shares and will not entitle a Participant to any shareholder rights, including voting rights, dividend entitlement or rights on liquidation, dissolution or winding-up of Fortis. AWARDS Grant of Units (a) The Committee may at any time and from time to time grant Unit Awards in accordance with the terms and conditions hereof to individuals eligible to be Participants. The terms of a Participant’s Unit Award shall be set forth in the Participant’s Agreement. In connection with the grant of Units, the Committee shall establish a target award opportunity level for each Participant (e.g., expressed as a percentage of the Participant’s base salary or otherwise as determined by the Committee). The number of Units granted hereunder shall be determined by multiplying (i) the amount of the target award opportunity level of a Participant as determined by the Committee, expressed in U.S. dollars by (ii) the exchange rate as determined in accordance with Section 9.2 and then dividing the product by (iii) the Market Price of the Common Shares on the Grant Date.

9 (b) Unless otherwise determined by the Committee in the applicable Agreement, and subject to Sections 4.3, 6.1 and 6.2, the Vesting Date for Service-Based Units shall be the third anniversary of the Grant Date. The Committee may, prior to the Vesting Date designated at the time of grant, designate an earlier date for Vesting of all or any portion of Service- Based Units then outstanding and granted to a Participant under the Plan, in which event such unvested Service-Based Units shall be deemed to be Vested Service-Based Units on such earlier date. (c) No certificates shall be issued with respect to Units. All Units granted hereunder shall be reflected in the Unit Account of the Participant. (d) Subject to the provisions of the Plan, a Unit shall be redeemed as of its Payment Date. (e) Each Participant’s Unit Account shall be credited with additional Units equal to the “dividend equivalent” when a cash dividend is paid on Common Shares. Such “dividend equivalent” shall be equal to a fraction where the numerator is the product of (a) the number of Units in such Participant’s Unit Account on the date that dividends are paid, including Units previously credited as “dividend equivalents,” multiplied by (b) the dividend paid per Common Share, and the denominator of which is the Market Price of one Common Share calculated on the date that dividends are paid. Any additional Units credited to a Participant’s Unit Account as a “dividend equivalent” shall have a Payment Date or Vesting Date, as applicable, which is the same as the Payment Date or Vesting Date, as applicable, for the Units in respect of which such additional Units are credited. Notwithstanding the foregoing, the Committee shall have discretion to modify the terms and timing of payment relating to dividend equivalents or to determine that any Unit Award is not entitled to dividend equivalents, in each case as set forth in the applicable Agreement. Grant of Incentive Awards (a) The Committee, in its discretion, may grant cash-based Incentive Awards to such Participants as it may designate from time to time. The terms of each Incentive Award shall be set forth in an Agreement authorized by the Committee. Each Agreement shall specify such terms and conditions as the Committee shall determine. (b) The determination of Incentive Awards for a given year or years may be based upon the attainment of specified levels of Company or Subsidiary performance as measured by pre-established, objective Payment Criteria determined at the discretion of the Committee. (c) The Committee shall (i) determine the Payment Criteria Period, (ii) determine Payment Criteria and target levels, and (iii) determine the level of Incentive Award to be paid to each selected Participant upon the achievement of Payment Criteria, each of which shall be set forth in the related Agreement. The amount of an Incentive Award to be paid upon the attainment of Payment Criteria shall equal a percentage of a Participant’s base salary for the fiscal year, a fixed dollar amount, or such other formula, as determined by the Committee and set forth in the related Agreement. The Committee generally shall make the foregoing determinations while the outcome of the Payment Criteria is uncertain.

10 (d) Incentive Awards shall not be denominated in Units and shall only be paid in cash. Adjustments and Change of Control. (a) In the event of any stock dividend, stock split, combination or exchange of shares, merger, consolidation, spin-off or other distribution (other than normal cash dividends) of Fortis’ assets to the shareholders, or any other change affecting the Common Shares, such proportionate adjustments, if any, as the Committee in its sole discretion may deem appropriate to reflect such change shall be made with respect to the number of Units outstanding under the Plan. In the event Fortis or the Company is not the surviving entity in a merger, consolidation or amalgamation with another entity or in the event of a liquidation, reorganization and in the absence of any surviving entity’s assumption of outstanding awards made under the Plan, the Committee may, subject to Section 4.3(b), provide for appropriate settlements of Units. (b) the event of a Change of Control, the Committee may provide for appropriate settlements of Units or Incentive Awards or for the successor or continuing entity to either assume outstanding Units and Incentive Awards or substitute the Units and Incentive Awards with new awards (such assumed or substituted Units and Incentive Awards, "Replacement Awards") on terms determined by the Committee in its sole discretion to be substantially equivalent to the terms of the Units and Incentive Awards, as applicable, held immediately prior to such Change of Control ("Replaced Awards"); provided that any Replacement Awards must: (i) have economic value substantially equivalent to the value of the Replaced Awards (determined at the time of the Change of Control), (ii) except in the case of Incentive Awards, relate to publicly traded equity securities, (iii) in the case of Participants who are U.S. taxpayers, comply with the requirements of Section 409A, and (iv) contain other terms and conditions which are, in the aggregate, no less favorable to the Participant than the Replaced Awards, but including terms and conditions that provide that if there is an Involuntary Employment Action in respect of a Participant within 24 months following the Change of Control, any conditions on the Participant’s rights under, or any restrictions on vesting applicable to, such Replacement Awards held by such Participant shall be waived or shall lapse, as the case may be, and any performance-based restrictions shall be deemed to have been achieved at the greater of: (A) target level performance, and (B) the actual performance level achieved had the Payment Criteria Period ended on the Involuntary Redemption Date, to the extent reasonably determinable by the plan administrator in its sole discretion. The determination of whether the conditions in the preceding sentence have been satisfied will be made by the Committee, as constituted immediately prior to the Change of Control, in its sole discretion. (c) Where Units and Incentive Awards are settled and not replaced or substituted with Replacement Awards pursuant to Section 4.3(b), such Units and Incentive Awards shall become redeemable on the Change of Control Redemption Date, whereupon: (i) all unvested Service-Based Units shall be deemed to be Vested Units on the Change of Control Redemption Date and the Market Price of such Service- Based Units redeemed pursuant to this Section 4.3(c) shall be calculated as of the Change of Control Redemption Date; and

11 (ii) the Payout Amount for all Performance-Based Units and Performance Awards redeemed pursuant to this Section 4.3(c) shall be the product of (x) the higher of (A) 100% of the target number of Performance-Based Units in the Award or (B) the actual Payout Percentage based on the Committee’s assessment of performance of the Payment Criteria from the beginning of the Payment Criteria Period for the Award through the date of the Change of Control, multiplied by (y) a fraction, the numerator of which is the number of days elapsed in the Payment Criteria Period for the Award through the date on which the Change of Control occurred and the denominator of which is the total number of days in the Payment Criteria Period for the Award. (d) Subject to Section 7.5: (i) where Awards are settled in accordance with Section 4.3(c), the Company shall pay the Payout Amount payable in respect of all such Awards as soon as practicable upon the consummation of the transaction(s) resulting in the Change of Control, but in any event not later than 10 Business Days following the consummation of the transaction(s) resulting in the Change of Control; and (ii) where Awards are settled in connection with an Involuntary Employment Action in respect of a Participant within 24 months following the Change of Control, the Company shall pay the Payout Amount payable in respect of all Awards of such Participant no later than 10 Business Days following the effective date of the Involuntary Employment Action, except, in each case, to the extent that later payment is required to comply with Section 409A of the Code. (e) Notwithstanding Sections 4.3(c) and 4.3(d)(i), but only to the extent required to comply with Code Section 409A, the Payout Amount payable in respect of a Unit shall become payable under Section 4.3(c) and 4.3(d)(i) only if the event(s) resulting in the Change of Control would constitute a “change in the ownership”, a “change in the effective control” or a “change in the ownership of a substantial portion of the assets” of Fortis or the Company, determined in accordance with Code Section 409A. Any Payout Amount not paid upon a Change of Control as a result of this Section 4.3(e) shall be payable at the time such Payout Amount would otherwise be payable under this Plan, disregarding the occurrence of the Change of Control. Committee Discretion. Subject to the terms and conditions of the Plan, the Committee shall determine the terms and conditions of any Awards in addition to those set forth herein at the time of grant or from time to time following the Grant Date, including any additional conditions with respect to the payment of Awards, which do not conflict with the Plan. The Committee may, subsequent to the Grant Date, waive any such term or condition or determine that it has been satisfied. PAYMENT Calculation of Payout Amount

12 (a) For any Award of Performance-Based Units, subject to the discretion of the Committee as described in Section 7.1, upon the completion of the applicable Payment Criteria Period, the Committee shall, as soon as reasonably practicable thereafter make an assessment of the Payment Criteria in accordance with the applicable Agreement and Section 4.1 for the purpose of determining the Payout Percentage and Payout Amount with respect to such Award. The Payout Amount for such Award shall be equal to the following: A x B x C where: A is that aggregate number of Performance-Based Units in the Participant’s Unit Account on the Payment Date relating to such Award, determined by adding: (i) the Performance-Based Units granted pursuant to Section 4.1 on the Grant Date for such Award; (ii) the Performance-Based Units (if any) granted as “dividend equivalents” in respect of the Performance-Based Units that are subject to the Award; and (iii) the Performance-Based Units (if any) granted in connection with an adjustment or reorganization to any of the Performance-Based Units that are subject to the Award; B is the Payout Percentage; and C is the Market Price of the Common Shares on the Payment Date. (b) For any Award of Service-Based Units, upon the Payment Date, the Committee shall determine the applicable Payout Amount for such Award, which shall be equal to the following: A x B where: A is that aggregate number of Vested Service-Based Units in the Participant’s Unit Account on the Payment Date, determined by adding: (i) the Vested Service-Based Units granted pursuant to Section 4.1 on the Grant Date for such Award; (ii) the Vested Service-Based Units (if any) granted as “dividend equivalents” pursuant to Section 4.1 in respect of the Service-Based Units that are subject to the Award; and (iii) the Vested Service-Based Units (if any) granted in connection with an adjustment or reorganization to any of the Service-Based Units that are subject to the Award; and B is the Market Price of the Common Shares on the Payment Date. (c) For Incentive Awards, subject to the discretion of the Committee as described in Section 7.1, upon the completion of a Payment Criteria Period the Committee shall, as soon as reasonably practicable thereafter make an assessment of the Payment Criteria for the purpose of determining the Payout Percentage and Payout Amount. The Payout Percentage and Payout Amount for each Participant shall be determined in accordance with the applicable Agreement and Section 4.2. Payment of Payout Amount

13 Following determination by the Committee of the Payout Amount in accordance with Section 5.1, subject to Section 2.5 and Article VI hereof, the Company shall as soon as practicable pay to the Participant a lump sum cash payment in U.S. dollars equal to the Participant’s Payout Amount, net of any applicable taxes and other amounts withheld in accordance with Section 7.5, and subject to the following: (a) For Performance-Based Units and Incentive Awards, such payment shall be made prior to the March 15 of the year following the end of the year in which the Payment Criteria Period ends; or (b) for Service-Based Units, such payment shall be made within 30 Business Days after the applicable Payment Date. Reduction of Unit Account Immediately after the payment contemplated in Section 5.2, the number of Units outstanding in the Participant’s Unit Account shall be reduced by (a) the number of Units so paid out and (b) if the payment was in respect of Performance-Based Units, the number of Performance-Based Units cancelled as a result of the failure, in full or in part, to satisfy the Payment Criteria by the Payment Date. TERMINATION OF SERVICE Termination for Cause, Involuntary Termination Without Cause or by Voluntary Resignation Unless otherwise provided in the applicable Agreement, on the date (the “Termination Date”) that a Participant ceases to be an Employee by virtue of being terminated for Cause, Involuntary Termination Without Cause or voluntary resignation other than for Good Reason, all Awards granted to a Participant with respect to which the Payment Date has not yet occurred shall be cancelled and the number of Units in the Participant’s account shall be deemed to be zero. Following the Termination Date, such Participant shall have no rights with respect to such cancelled Awards or to any further benefits under the Plan except for any Payout Amount due and payable in respect of Awards for which the Payment Date occurred prior to the Termination Date. Death, Disability or Retirement of a Participant; Certain Terminations under Employment Agreement Unless otherwise provided in the applicable Agreement, if a Participant ceases to be an Employee prior to a Payment Date as a result of death, Disability or Retirement: (a) in the case of termination as a result of death, Disability or Retirement , (i) the Performance-Based Units and Incentive Awards of such Participant will, subject to Section 6.2(b), remain outstanding until paid or cancelled in accordance with Section 4.3 or Article V, as applicable; and (ii) the Service-Based Units of such Participant will, subject to Section 6.2(b), become Vested Service-Based Units and shall be redeemed on the date of the death or Retirement of the Participant or on the date on which the Participant’s Service is terminated due to Disability; (b)

14 (i) if Service is terminated due to death, Disability or Retirement and the Participant has been in the Service of the Company or its Affiliates for less than 15 years on the Termination Date, the Participant’s Awards shall be deemed to have Vested and the amount otherwise payable in respect of such Awards shall be prorated to reflect the actual period between the Grant Date and the date the Participant ceased Service as follows: (a) one-third of the Units shall be deemed to have Vested if termination occurred on or after the one-year anniversary of the Grant Date and before the two-year anniversary of the Grant Date, and (b) two-thirds of the Units shall be deemed to have Vested if termination occurred on or after the two-year anniversary of the Grant Date and before the three-year anniversary of the Grant Date; and will be paid in accordance with Section 4.3 or Article V, as applicable; and (ii) if Service is terminated due to death, Disability or Retirement and the Participant has been in the Service of the Company or its Affiliates for 15 years or more on the Termination Date, then the amount otherwise payable in respect of such Awards shall be determined as if the Participant continued to be an Employee on the Payment Date of each Unit in such Participant’s Unit Account and will be paid in accordance with Section 4.3 or Article V, as applicable; subject to the discretion of the Committee to determine that special circumstances exist that reasonably justify an adjustment to the amount which would otherwise be paid to a Participant pursuant to this Section 6.2(b); and (c) in the case of the death of a Participant, the Participant’s designated beneficiary or estate will be entitled to receive payment, if any, in respect of the Awards of the Participant. ADMINISTRATION Administration (a) The Plan shall be administered by the Committee. Among other things, the Committee shall have full and complete authority to interpret the Plan, establish, amend and rescind any rules and regulations relating to the Plan, and make any other determinations that it deems necessary or desirable for the administration of the Plan. The Committee may correct any defect or supply any omission or reconcile any inconsistency in the Plan or any Agreement in the manner and to the extent the Committee deems necessary or desirable. Any decisions of the Committee relating to the interpretation and administration of the Plan, as described herein, shall lie within its sole and absolute discretion and shall be final, conclusive and binding on all parties concerned and their beneficiaries, legal representatives and successors, as applicable, and the shareholders of Fortis. No member of the Committee shall be liable for any action or determination made in good faith with respect to the Plan or any Award hereunder. (b) In addition to any other powers set forth in the Plan, but subject to Code Section 409A and the provisions of the Plan, the Committee shall have the full and final power and authority, in its discretion to:

15 (i) amend, modify, or cancel any Award, or to waive any restrictions or conditions applicable to any Award; (ii) accelerate, continue, or defer the exercisability or Vesting of any Award or any shares acquired pursuant thereto; (iii) authorize, in conjunction with any applicable deferred compensation plan of the Company, that the receipt of cash subject to any Award under this Plan may be deferred under the terms and conditions of such deferred compensation plan; and (iv) determine the terms and conditions of Awards granted to Participants and whether such terms and conditions have been satisfied. No amendment, modification, or cancellation of an outstanding Award or Agreement shall in any manner materially and adversely affect any then outstanding Award under the Plan without the consent of the Participant holding such Award, except as set forth in any Agreement relating to the Award, as set forth in Sections 2.2 or 4.3, or to bring the Plan and/or an Award into compliance with the requirements of Code Section 409A or to qualify for an exemption under Code Section 409A. (c) In exercising its authority under Section 7.1, the Committee shall from time to time ensure it is informed as to the terms and conditions of any similar plans of Fortis and Fortis’ other subsidiaries in order that it may consider such terms in exercising such authority. Unfunded Obligation Unless otherwise determined by the Committee, the Plan will be an unfunded obligation of the Company and the Company’s obligations hereunder shall constitute general, unsecured obligations, payable solely out of its general assets, and no Participant or other Person shall have any right to any specific assets of the Company. The Company shall not segregate any assets for the purpose of funding its obligations with respect to the Awards granted hereunder and shall not be deemed to be a trustee of any amounts to be distributed or paid pursuant to the Plan. No liability or obligation of the Company under the Plan shall be deemed to be secured by any pledge of, or encumbrance on, any property or assets of the Company. To the extent any individual holds rights under the Plan, such rights (unless otherwise determined by the Committee) shall be no greater than the rights of an unsecured general creditor of the Company. Amendment, Suspension and Termination The Plan may be amended, suspended or terminated at any time by the Board, in whole or in part, except as to rights already accrued hereunder unless the affected Participant consents to any such change in writing; provided, however, that an amendment, suspension or termination the effect of which is not adverse to such Participant shall not require such Participant’s consent. If the Plan is terminated, prior awards shall, at the discretion of the Committee, either (a) subject to Section 2.5, become immediately payable in accordance with Section 4.3 or Article V, as applicable, or (b) remain outstanding and in effect in accordance with their applicable terms and conditions.

16 Cost of Administration The Company will be responsible for all costs relating to the administration of the Plan. Withholding Taxes The Company shall withhold from any payment to or for the benefit of a Participant any amount required to comply with Applicable Law relating to the withholding of tax or the making of any other source deductions, including on the amount, if any, included in income of a Participant and may adopt and apply such rules and regulations as in its opinion will ensure that the Company will be able to so comply. To the extent that the Company is required under Applicable Law to withhold tax at any time other than upon payment of Awards pursuant to this Plan (for example, if payment is deferred pursuant to Section 7.6 hereof), then the Company shall have the right in its sole discretion to (a) require the Participant to pay or provide for payment of the required tax withholding, or (b) deduct the required tax withholding from any amount of salary, bonus, incentive compensation or other payment otherwise payable in cash to the Participant. Deferral Notwithstanding anything contained herein to the contrary, but subject to Code Section 409A, Participants may elect to defer receipt of payment of the Awards in accordance with the terms, and subject to the conditions, of the Company’s Executive Deferred Compensation Plan (and any similar or successor plan that may be in effect from time to time). RECOUPMENT Clawback of Payout Amounts and Units In the event of a Restatement, the Committee will review in respect of the Restatement Period all amounts paid or payable to the Company’s executive officers pursuant to this Plan and all such amounts shall be subject to recoupment pursuant to the Company’s Recoupment Policy, as in effect from time to time. MISCELLANEOUS No Assignment An Award is personal to the Participant and is non-assignable. No Award granted hereunder shall be pledged, hypothecated, charged, transferred, assigned or otherwise encumbered or disposed of by the Participant, whether voluntarily or by operation of law, otherwise than by testate succession or the laws of descent and distribution, and any attempt to do so will be null and void. During the lifetime of the Participant, an Award shall be redeemable only by the Participant and, upon the death of a Participant, the Person to whom the rights shall have passed by testate succession or by the laws of descent and distribution may receive payment of any Awards in accordance with the terms hereof.

17 Currency (a) The value of the Units as determined in Section 4.1 with respect to an Award shall be calculated in U.S. dollars, which then shall be converted to Canadian dollars using the exchange rate published by the Bank of Canada on the Business Day prior to the Grant Date or such other available published exchange rate chosen by the Human Resources Committee of the Fortis Board. (b) The Payout Amounts shall be calculated in Canadian dollars, which then shall be converted to U.S. dollars using the exchange rate set forth in Section 9.2(a). Successors and Assigns The Plan shall be binding on all successors and assigns of the Company and a Participant, including the estate of such Participant and the executor, administrator or trustee of such estate, or any receiver or trustee in bankruptcy or representative of the Participant’s creditors. IN WITNESS WHEREOF, the Company caused this Plan to be executed by its duly authorized officer as of November 11, 2021. ITC HOLDINGS CORP. By: Linda H. Apsey Its: President and Chief Executive Officer

FORTIS INC. 2020 RESTRICTED SHARE UNIT PLAN Effective as of January 1, 2020 Amended – January 1, 2022 Schedule A Amended – January 1, 2021 ARTICLE 1 PREAMBLE AND DEFINITIONS 1.1 Title The Restricted Share Unit Plan herein, as amended or restated from time to time, shall be called the “2020 Restricted Share Unit Plan” and is referred to herein as the “Plan”. 1.2 Purpose of the Plan The purpose of the Plan is to (a) promote a greater alignment of interests between the senior management of the Corporation and the shareholders of the Corporation, (b) foster the growth and success of the business of the Corporation in accordance with its vision, (c) ensure that management is focused on the Corporation’s primary business objectives and (d) assist the Corporation in attracting and retaining senior management. 1.3 Defined Terms In the Plan, the following terms have the respective meanings set out below and grammatical variations of such terms shall have corresponding meanings: “Administrator” means such administrator as may be appointed by the Corporation and identified to Participants from time to time to assist in the administration of the Plan in accordance with Section 7.1, which administrator may be the Corporation or any of its Subsidiaries acting for the benefit of Participants; “Affected Participant” means, in connection with a Change of Control pursuant to: (a) clause (a) of the definition of Change of Control, each Participant; or (b) clause (b) of the definition of Change of Control, each Participant who is an Employee of the affected Subsidiary who ceases to be employed by the Corporation or any of its Subsidiaries immediately following such Change of Control; “Applicable Exchange Rate” means in connection with any conversion to U.S. Dollars pursuant to Section 4.1(d), 4.2, 4.3, 5.1(a), 5.1(b) or otherwise required pursuant to the Plan, the Exchange Rate as of the Business Day immediately prior to the Grant Date of such Restricted Share Unit or any underlying Restricted Share Unit, as applicable; “Applicable Law” means any applicable provision of law, domestic or foreign, including, without limitation, the Income Tax Act (Canada) and the Corporations Act (Newfoundland and Labrador), as they may be amended, supplemented or replaced from time to time,

- 2 - together with all regulations, rules, policy statements, rulings, notices, orders or other instruments promulgated thereunder and any applicable rules or policies of any stock exchange; “Blackout Period” means a period when a Participant is prohibited from trading in the Corporation’s securities pursuant to securities regulatory requirements or the Corporation’s written policies then applicable; “Board” means the Board of Directors of the Corporation; “Business Day” means any day, other than a Saturday, Sunday or statutory or civic holiday in the Provinces of Ontario or Newfoundland and Labrador; “Canadian Dollars” means the lawful currency of Canada; “Change of Control” means: (a) with respect to the Corporation, the occurrence of any one or more of the following events: (i) the acquisition of ownership, directly or indirectly, beneficially or of record, by any person or combination of persons acting jointly or in concert with each other, of Voting Securities representing more than 50% of the aggregate ordinary voting power represented by the issued and outstanding Voting Securities; (ii) the sale, lease, exchange or other disposition, in a single transaction or a series of related transactions, of assets, rights or properties of the Corporation and/or any of its Subsidiaries which have an aggregate book value greater than 50% of the book value of the assets, rights and properties of the Corporation and its Subsidiaries on a consolidated basis to any other person or entity, other than a disposition to a wholly owned Subsidiary in the course of a reorganization of the assets of the Corporation and its Subsidiaries; (iii) the adoption of a resolution to wind-up, dissolve or liquidate the Corporation; (iv) as a result of or in connection with: (A) a contested election of Directors; or (B) a consolidation, merger, amalgamation, arrangement or other reorganization or acquisition involving the Corporation or any of its affiliates and another corporation or other entity, the nominees named in the most recent management information circular of the Corporation for election to the Board shall not constitute a majority of the Board; or (v) the Board adopts a resolution to the effect that a change of control of the Corporation has occurred or is imminent; and (b) with respect to any Subsidiary, the occurrence of any one or more of the following events:

- 3 - (i) the acquisition of ownership, directly or indirectly, beneficially or of record, by any person or combination of persons acting jointly or in concert with each other, other than the Corporation or another Subsidiary (or a combination thereof), of voting securities of such Subsidiary representing more than 50% of the aggregate ordinary voting power represented by the issued and outstanding voting securities of such Subsidiary; (ii) the sale, lease, exchange or other disposition, in a single transaction or a series of related transactions, of assets, rights or properties of such Subsidiary which have an aggregate book value greater than 50% of the book value of the assets, rights and properties of such Subsidiary on a consolidated basis to any other person or entity, other than a disposition to the Corporation or another Subsidiary (or a combination thereof) in the course of a reorganization of the assets of such Subsidiary; (iii) the adoption of a resolution to wind-up, dissolve or liquidate the Subsidiary; or (iv) the Committee determines that a change of control with respect to such Subsidiary has occurred or is imminent; “Committee” means the Human Resources Committee or other committee of Directors designated by the Board from time to time to administer the Plan and consisting of not less than three members of the Board, each of whom qualifies as independent under section 1.4 of National Instrument 52-110 – Audit Committees and the applicable rules of the NYSE, and where no such committee has been appointed, means the Board; provided, however, without limiting the foregoing, that if the Corporation ceases to qualify as a “foreign private issuer” (as defined in Rule 3b-4 under the Exchange Act), the Committee shall be a committee of the Board comprised of not less than two directors, and each member of the Committee shall be a “non-employee director” within the meaning of Rule 16b-3 under the Exchange Act; “Common Share Account” has the meaning ascribed thereto in Section 6.1(a)(i); “Common Shares” means the common shares of the Corporation; “Corporation” means Fortis Inc. and any successor corporation whether by arrangement, amalgamation, merger or otherwise; “Director” means a director of the Corporation; “Disability” means, with respect to a Participant, the physical or mental illness of the Participant resulting in the Participant’s absence from his or her full-time duties with the Corporation or a Subsidiary, in respect of which the Participant commences receiving, or is eligible to receive, long-term disability benefits under the long-term disability plan of the Corporation or a Subsidiary, as applicable; “Election Deadline” means, unless otherwise determined by the Committee or provided in the Plan, the date that is 30 days prior to the Vesting Date of a Restricted Share Unit;

- 4 - “Employee” means an employee of the Corporation or a Subsidiary, and includes an officer of the Corporation or a Subsidiary, but excludes a director of the Corporation or a Subsidiary who is not also an employee of the Corporation or a Subsidiary; “Exchange Act” means the U.S. Securities Exchange Act of 1934, as amended; “Exchange Rate” means, as of a relevant date, the daily average rate of exchange of the Bank of Canada for converting Canadian Dollars to U.S. Dollars, or if on such date a daily average rate of exchange of the Bank of Canada is not available, the daily average rate of exchange of the Bank of Canada on the immediately preceding day on which such exchange rate is available; “Executive Compensation Policy” means, as applicable, the executive compensation policy of the Corporation in effect from time to time and any similar policy or practice of the Corporation or any Subsidiary in effect from time to time, but only to the extent such policy or practice applies to a Participant; “Expiry Date” means the date designated by the Committee on which a Restricted Share Unit will be terminated and cancelled in accordance with the Plan or, if no such date is specified in the applicable Grant Agreement, December 31 of the third calendar year following the calendar year that includes the Grant Date of such Restricted Share Unit; “Good Reason” means the occurrence, after a Change of Control, of any of the following events without the Affected Participant's written consent: (a) a reduction in the base salary of the Affected Participant other than a general reduction that affects all similarly situated executives in substantially the same proportions; (b) a reduction in the Affected Participant’s target short term incentive or long term incentive opportunity, other than a general reduction that affects all similarly situated executives in substantially the same manner; (c) any failure by the Corporation or the Subsidiary, as applicable, to comply with any material terms of the Affected Participant's employment as in effect immediately prior to such Change of Control, other than an inadvertent failure not occurring in bad faith and which is remedied by the Corporation or such Subsidiary promptly after receipt of written notice thereof given by the Affected Participant; (d) any material adverse change in the Affected Participant’s duties, responsibilities, authority, title, status or reporting structure as in effect immediately prior to the Change of Control; (e) the discontinuation or amendment of any equity incentive plan, short term incentive plan, employee benefit plan or other material fringe benefit or perquisite, if such discontinuation or amendment results in less favourable treatment of the Affected Participant, in the aggregate (unless minor or insignificant), taking into consideration any related amendment or replacement plan, benefit or perquisite, as applicable; or

- 5 - (f) the Corporation or the Subsidiary, as applicable, requiring the Affected Participant to be based at any office or location other than (i) within 50 kilometres of the Affected Participant's office or location immediately prior to the Change of Control or (ii) at any other office or location previously agreed to in writing by the Affected Participant; “Grant Agreement” means an agreement between the Corporation and a Participant evidencing the grant of Restricted Share Units to such Participant, which shall be substantially in the form of Schedule A; “Grant Date” means the effective date of each grant of Restricted Share Units by the Committee to a Participant, which shall be January 1 of the calendar year of such grant; “Involuntary Employment Action” as to a Participant means the termination of the Participant’s employment with the Corporation or a Subsidiary, as applicable, (a) by the Corporation or the Subsidiary other than (i) as a result of the death, Disability or Retirement of that Participant or (ii) for Just Cause, or (b) by the Participant for Good Reason; “Just Cause” means a determination by the Board that any of the following has occurred: (a) wilful and continued failure by the Participant to substantially perform the Participant’s duties to the Corporation or a Subsidiary (other than any such failure resulting from his or her incapacity due to physical or mental illness) after a demand for substantial performance improvement has been delivered in writing to the Participant which specifically identifies the manner in which the Participant has not substantially performed his or her duties; (b) wilful engaging by the Participant in misconduct that is materially injurious to the Corporation or a Subsidiary, monetarily or otherwise; (c) the conviction of the Participant of a criminal offence involving dishonesty; or (d) any other action or omission that would be just cause at law; provided that no act, or failure to act, on the Participant’s part shall be considered “wilful” unless the Board determines that such act or failure to act by the Participant was in bad faith and was not reasonably believed by the Participant to be in the best interests of the Corporation or a Subsidiary, as applicable; “Market Price” at any date in respect of the Common Shares means: (x) the volume weighted average trading price of the Common Shares determined by dividing the total value of the Common Shares traded on the TSX during the last five Trading Days immediately preceding such date by the total volume of the Common Shares traded on the TSX during such five Trading Days (or, if such Common Shares are not then listed and posted for trading on the TSX, on such stock exchange on which such Common Shares are listed and posted for trading as may be selected for such purpose by the Board); or (y) in the event that such Common Shares are not listed and posted for trading on any stock exchange, the Market Price shall be the fair market value of such Common Shares as determined by the Board in its sole discretion, acting in good faith; “NYSE” means the New York Stock Exchange or any successor thereto; “Outside Date” has the meaning ascribed thereto in Section 10.5; “Participant” means any Employee to whom a Restricted Share Unit has been granted in accordance with the terms and conditions of the Plan;

- 6 - “Payout Amount” means, with respect to each Vested Unit, a cash payment equal to the Market Price of one Common Share on the applicable Pricing Date which, for greater certainty, (x) in the case of a U.S. Taxpayer, will be converted to U.S. Dollars using the Applicable Exchange Rate and (y) for all other Participants, will be denominated in Canadian Dollars; “Payout Share” means, with respect to each Vested Unit, one Common Share; “person” includes any individual, corporation, partnership, firm, joint venture, syndicate, association, trust, government, governmental agency and any other form of entity or organization; “Plan” has the meaning ascribed thereto in Section 1.1; “Pricing Date” means, for a Restricted Share Unit, the earlier of: (a) the Vesting Date for that Restricted Share Unit as determined in accordance with Section 4.1(h); and (b) in the case of any Restricted Share Unit deemed to be redeemed by a Participant pursuant to Section 4.2 or 5.3 of the Plan, the applicable date on which such Restricted Share Unit is deemed to be a Vested Unit and redeemed by such Participant, provided that to the extent that any such date occurs during a Blackout Period, such Pricing Date shall be extended to the tenth Business Day following the expiration of such Blackout Period or such other date following the expiry of such Blackout Period as may be determined by the Committee, acting reasonably; “Restatement” has the meaning ascribed thereto in Section 8.1(a); “Restricted Share Unit” means a notional unit evidenced by an entry on the books of the Corporation, which represents the right of a Participant, at his or her election, subject to the provisions of the Plan, to receive the Payout Amount or a Payout Share; “Restricted Share Unit Account” means the account maintained for a Participant on the books of the Corporation into which Restricted Share Units will be credited in accordance with Section 4.1, 4.2 or 4.3 and debited in accordance with Section 4.2 or Article 5; “Retirement” means the retirement of a Participant from employment with the Corporation or a Subsidiary, subject to any policy, practice or requirement relating to the minimum age and service as of the date of retirement and/or other term of service as may be stipulated by the specific Corporation or Subsidiary at the time of retirement; “Section 409A” has the meaning ascribed thereto in Section 10.1; “Securities Act” has the meaning ascribed thereto in Section 6.2; “Service” means the period of employment of the Participant by the Corporation or any of its Subsidiaries, including service with a Subsidiary which has been acquired, directly or indirectly, by the Corporation;

- 7 - “Share Ownership Requirements” means the share ownership requirements applicable to certain Participants arising pursuant to any share ownership policy of the Corporation or any similar policy of any Subsidiary in effect from time to time, but only to the extent that such policy applies to such Participant. For greater certainty, any transitional period that applies to a Participant under any share ownership policy of the Corporation or any similar policy of any Subsidiary in effect from time to time shall not be taken into account for purposes of the Plan or any determination required to be made by the Committee in respect of a Participant pursuant to Section 4.1(f); “Subsidiary” means a person (other than an individual) which is controlled, directly or indirectly, by the Corporation, whether as a result of registered or beneficial ownership of a majority of the voting securities of such person, the right to appoint a majority of the directors of such person, a contractual arrangement or otherwise; “Termination Date” means, in respect of (a) a Participant other than a U.S. Taxpayer, the effective date of the termination of employment of such Participant by the Corporation or any of its Subsidiaries, as determined by the Corporation or Subsidiary, as applicable, subject to any period of notice of termination under employment standards legislation, employment contract or the common law applicable to such Participant, if termination of employment has not been by reason of Just Cause or voluntary resignation, and (b) a U.S. Taxpayer, the date on which such Participant has been “separated from service” with the Corporation or any of its Subsidiaries as defined under Section 409A; “Trading Day” means any date on which the TSX is open for the trading of the Common Shares (or, if the Common Shares are not then listed and posted for trading on such exchange, on such other stock exchange on which the Common Shares are listed and posted for trading as may be selected for such purpose by the Board); “TSX” means the Toronto Stock Exchange or any successor thereto; “U.S. Dollars” means the lawful currency of the United States of America; “U.S. Taxpayer” means any Participant who is a citizen or permanent resident of the United States, or is otherwise subject to taxation by the United States on a net basis; “Vested Unit” means a Restricted Share Unit which has vested in accordance with the terms and conditions of the Plan; “Vesting Date” means the date on which a Restricted Share Unit vests in accordance with the terms and conditions of the Plan; and “Voting Securities” means the Common Shares and any other shares entitled to vote for the election of Directors and shall include any security, whether or not issued by the Corporation, which are not shares entitled to vote for the election of Directors but are convertible into or exercisable or exchangeable for shares which are entitled to vote for the election of Directors including any options or rights to purchase such shares or securities. 1.4 Schedule The following Schedule is attached to and forms part of the Plan:

- 8 - Schedule A - Form of Grant Agreement ARTICLE 2 INTERPRETATION 2.1 Governing Law The Plan shall be interpreted and enforced in accordance with the laws of the Province of Newfoundland and Labrador and the federal laws in Canada applicable therein. The participation of a Participant in the Plan shall be construed as acceptance of the terms and conditions of the Plan by such Participant and as the Participant’s agreement to be bound thereby. 2.2 Severability If any provision of the Plan is determined by a court of competent jurisdiction to be invalid, illegal or unenforceable in any respect, all other provisions of the Plan shall nevertheless remain in full force and effect so long as the economic or legal substance of the transactions contemplated hereby is not affected in any manner materially adverse to the Corporation, any of its Subsidiaries, or any Participant. 2.3 References The division of the Plan into articles and sections and the insertion of headings are for convenience of reference only and shall not affect the construction or interpretation of the Plan. Words importing the singular number only shall include the plural and vice versa and words importing the use of any gender shall include all genders. 2.4 Fractional Restricted Share Units Subject to Section 5.1(b), fractional Restricted Share Units are permitted under the Plan. ARTICLE 3 ESTABLISHMENT OF THE PLAN 3.1 Establishment The Corporation is establishing the Plan for Participants effective as at January 1, 2020. 3.2 No Additional Rights Nothing herein contained shall be deemed to give any person the right to be retained as an Employee or to otherwise be retained in the service of the Corporation or a Subsidiary. Restricted Share Units are not Common Shares and will not entitle a Participant to any shareholder rights, including, without limitation, voting rights, the right to receive dividends or rights on liquidation, dissolution or winding-up of the Corporation.

- 9 - ARTICLE 4 RESTRICTED SHARE UNIT GRANTS 4.1 Grant of Restricted Share Units (a) The Committee may at any time and from time to time grant Restricted Share Units in accordance with the Executive Compensation Policy, and pursuant to a Grant Agreement entered into in accordance with the terms hereof, to persons designated to be Participants hereunder. Grants of Restricted Share Units and the terms thereof shall be recorded in a register to be maintained by the Corporation, which register may be amended, supplemented or replaced from time to time. (b) Each Restricted Share Unit shall be granted to a Participant as a bonus in respect of services rendered by such Participant and shall be issued in the same calendar year that such services are rendered. (c) The aggregate dollar amount of the Restricted Share Units granted to a Participant on the Grant Date shall be determined by the Committee, having regard to the recommendation of the board of directors of the Subsidiary employer of the Participant, to the extent applicable, in accordance with the Executive Compensation Policy. For greater certainty, the aggregate dollar amount of the Restricted Share Units granted to a Participant on the Grant Date (x) in the case of a U.S. Taxpayer, will be denominated in U.S. Dollars and (y) for all other Participants, will be denominated in Canadian Dollars. (d) The number of Restricted Share Units to be granted to a Participant on the Grant Date shall be determined by dividing (i) the aggregate dollar amount of the Restricted Share Units granted to such Participant as determined by the Committee in accordance with Section 4.1(c) by (ii) the Market Price of the Common Shares on the Grant Date or, to the extent that the Grant Date occurs during a Blackout Period, the tenth Business Day following the expiration of such Blackout Period. To the extent that the aggregate dollar value in (i) is denominated in U.S. Dollars, the calculation to be performed pursuant to this Section 4.1(d) shall be performed following the conversion of the aggregate dollar amount referenced in clause (i) to Canadian Dollars using the Applicable Exchange Rate. (e) The Committee may determine from time to time that special circumstances exist that would reasonably justify the grant of Restricted Share Units to a Participant as compensation in addition to any annual grant of Restricted Share Units which the Participant may otherwise receive in accordance with this Section 4.1. Upon making such a determination, the Committee may grant Restricted Share Units to such a Participant provided that the Restricted Share Units comply in all other respects with the terms and conditions of the Plan. Except as provided for in this Section 4.1(e) and Sections 4.2 and 4.3, no further Restricted Share Units shall be granted under the Plan other than by way of annual grant by the Committee. (f) Subject to the provisions of this Section 4.1(f), Section 4.1(i) and Section 6.2, each Restricted Share Unit which becomes a Vested Unit pursuant to the provisions of the Plan shall give the Participant the right to receive either the Payout Amount or a Payout Share. Except as provided in Section 4.2 and Section 6.2, a Participant who does not satisfy his or her Share Ownership Requirements on the Election Deadline, as determined by the Committee, shall receive a Payout Share in respect of 50% of all of the Vested Units covered by the relevant Grant Agreement (including, for greater certainty, all Restricted Share Units credited on such underlying Restricted Share Units pursuant to Section 4.3) and shall not be entitled to elect to receive the

- 10 - Payout Amount in respect of such Vested Units (but shall be entitled to elect to receive the Payout Amount or Payout Shares in respect of the other 50% of such Vested Units). A Participant who satisfies his or her Share Ownership Requirements on the Election Deadline for a Restricted Share Unit shall have the right to elect to receive the Payout Amount or, subject to the provisions of Section 6.2, a Payout Share in respect of all Vested Units covered by the relevant Grant Agreement (including, for greater certainty, all Restricted Share Units credited on such underlying Restricted Share Units pursuant to Section 4.3). The election to receive the Payout Amount or Payout Shares shall be made by the Participant in writing to the Administrator on or before the Election Deadline for the applicable Restricted Share Units. For each Participant who is entitled to elect to receive the Payout Amount or a Payout Share for Vested Units, if no election is provided by the Participant in accordance with this Section 4.1(f), the Participant will be deemed to have elected to receive the Payout Amount upon the vesting of his or her Restricted Share Units. Any election to receive Payout Shares by a Participant pursuant to this Section 4.1(f) may be made in respect of 100% of the Vested Units covered by the relevant Grant Agreement (including, for greater certainty, all Restricted Share Units credited on such underlying Restricted Share Units pursuant to Section 4.3) or, if made in respect of less than all such Vested Units, must be made in respect of 50% of such Vested Units. The election or deemed election by a Participant to receive the Payout Amount and/or Payout Shares for Vested Units covered by a Grant Agreement is not subject to change, revision or amendment by the Participant following the applicable Election Deadline. (g) Notwithstanding any other provision of the Plan or a Grant Agreement, Restricted Share Units granted under the Plan, if not redeemed or previously terminated and forfeited in accordance with the Plan, shall terminate on and be of no further force and effect after the Expiry Date. (h) The Committee shall designate, at the time of grant of Restricted Share Units, the date or dates on which all or a portion of the Restricted Share Units shall become Vested Units, subject to any terms or conditions determined under Section 4.1(i). Unless otherwise determined by the Committee to be earlier, and subject to Sections 4.2, 4.3, 5.2 and 5.3, the Vesting Date shall be the third anniversary of the Grant Date in respect of any grant of Restricted Share Units. The Committee may, subsequent to the Grant Date, but prior to the Vesting Date designated at the time of grant, designate an earlier date for vesting of all or any portion of Restricted Share Units then outstanding and granted to a Participant under the Plan, in which event such unvested Restricted Share Units shall be deemed to be Vested Units on such earlier date. (i) Subject to the terms and conditions of the Plan, the Committee may determine the terms and conditions of any Restricted Share Units in addition to those set forth herein at the time of grant or from time to time following the Grant Date, including any additional conditions with respect to the vesting of Restricted Share Units, which do not conflict with the Plan. The Committee may, subsequent to the Grant Date, waive any such term or condition or determine that it has been satisfied. The Committee may at any time, including in the circumstances described in Section 6.2 or as otherwise required pursuant to Applicable Law, revoke or limit the right of a Participant to elect to receive Payout Shares in respect of Vested Units. If the Committee accelerates the Vesting Date of Restricted Share Units it shall provide at least 10 days prior written notice of such accelerated Vesting Date and any applicable Election Deadline to all affected Participants in order to permit such Participants to elect to receive the Payout Amount or Payout Shares on or before such Vesting Date in accordance with Section 4.1(f). (j) No certificates shall be issued with respect to Restricted Share Units.

- 11 - (k) All Restricted Share Units granted hereunder shall be evidenced by a Grant Agreement between the Corporation and the Participant substantially in the form of Schedule A hereto. 4.2 Adjustments, Reorganizations and Change of Control (a) In the event of any stock dividend, stock split, combination or exchange of shares, merger, consolidation, arrangement, amalgamation, spin-off or other distribution (other than normal cash dividends) of the Corporation’s assets to the shareholders, or any other change affecting the Common Shares, such proportionate adjustments, if any, as the Committee in its discretion may deem appropriate to reflect such change shall be made with respect to the number of Restricted Share Units outstanding under the Plan. In the event the Corporation is not the surviving entity in a merger, consolidation, arrangement, amalgamation or other similar transaction with another entity or in the event of a liquidation or reorganization of the Corporation, and in the absence of any surviving entity’s assumption of the Plan and the outstanding Restricted Share Units, the Committee may in its discretion and subject to Section 4.2(b), provide for appropriate settlements of Restricted Share Units. (b) In the event of a Change of Control, the Committee may in its discretion provide for appropriate settlements of Restricted Share Units or for the successor or continuing entity to either assume outstanding Restricted Share Units or substitute Restricted Share Units with new awards (such assumed or substituted Restricted Share Units, “Replacement Awards”) on terms determined by the Committee in its sole discretion to be substantially equivalent to the terms of the Restricted Share Units held immediately prior to such Change of Control (“Replaced Units”); provided that any Replacement Awards must: (i) have economic value substantially equivalent to the value of the Replaced Units (determined at the time of the Change of Control); (ii) relate to publicly traded equity securities; (iii) in the case of Affected Participants who are U.S. Taxpayers, comply with the requirements of Section 409A; and (iv) contain other terms and conditions which are, in the aggregate, no less favourable to the Affected Participant than the Replaced Units, including terms and conditions that provide that if there is an Involuntary Employment Action in respect of an Affected Participant within 24 months following the Change of Control, any conditions on the Affected Participant’s rights under, or any restrictions on vesting applicable to, such Replacement Awards held by such Affected Participant shall be waived or shall lapse, as the case may be, and any performance- based restrictions shall be deemed to have been achieved at target level performance. The determination of whether the conditions in the preceding sentence have been satisfied will be made by the Committee, as constituted immediately prior to the Change of Control, in its sole discretion. (c) Where any Restricted Share Units are settled and not assumed or substituted with Replacement Awards pursuant to Section 4.2(b), such Restricted Share Units shall become Vested Units and shall be redeemed on the effective date of the consummation of the transaction(s) resulting in the Change of Control. For purposes of determining the Payout Amount, the Market Price of such Restricted Share Units shall be calculated as of the date that is immediately prior to the date of the Change of Control (in the case of a U.S. Taxpayer, in each case converted to U.S. Dollars using the Applicable Exchange Rate for each underlying Restricted Share Unit). (d) Subject to Section 7.5, unless otherwise determined by the Committee:

- 12 - (i) where Restricted Share Units are settled in accordance with Section 4.2(c), the Corporation shall pay the Payout Amount payable in respect of such Restricted Share Units prior to the effective time of the Change of Control, and (ii) where Restricted Share Units are settled in connection with an Involuntary Employment Action in respect of a Participant within 24 months following the Change of Control, the Corporation shall pay the Payout Amount payable in respect of such Units no later than 10 Business Days following the effective date of the Involuntary Employment Action, except, in each case, to the extent that later payment is required to comply with Section 409A. (e) For greater certainty, the limitation in Section 4.1(f) that a Participant who does not satisfy his or her Share Ownership Requirements on the Election Deadline will receive Payout Shares in respect of 50% of his or her Vested Units does not apply in connection with a Change of Control or an Involuntary Employment Action within 24 months following a Change of Control, and the Affected Participant will receive the Payout Amount in respect of all Vested Units. 4.3 Dividend Equivalents Each Participant’s Restricted Share Unit Account shall be credited with additional Restricted Share Units equal to the “dividend equivalent” when a cash dividend is paid on the Common Shares. Such “dividend equivalent” shall be equal to a fraction where the numerator is the product of (x) the number of Restricted Share Units in such Participant’s Restricted Share Unit Account on the date that the dividend is paid multiplied by (y) the dividend paid per Common Share and the denominator of which is the Market Price of one Common Share calculated as of the date that the dividend is paid. Any additional Restricted Share Units credited to a Participant’s Restricted Share Unit Account as a “dividend equivalent” shall have a Vesting Date which is the same as the Vesting Date for the Restricted Share Units in respect of which such additional Restricted Share Units are credited. ARTICLE 5 PAYMENT AND PARTICIPANT’S TERMINATION 5.1 Payment (a) Subject to the provisions of Sections 4.2, 5.3, 6.2 and 7.5, the Participant shall be entitled to receive, and the Corporation shall pay or deliver or cause a Subsidiary to pay or deliver, as applicable, to the Participant, in accordance with the election (or deemed election) of such Participant relating to such Restricted Share Units pursuant to Section 4.1(f), the Payout Amount or the Payout Share, as applicable, in respect of each Vested Unit: (i) within 30 days of the applicable Pricing Date; or (ii) if a Blackout Period occurs following a Pricing Date and prior to any payment pursuant to this Section 5.1(a)(i), within 30 days of the expiry of such Blackout Period, but in either such case not later than December 31 of the year in which the Vesting Date occurs. Upon the Corporation having paid the Payout Amount or delivered the Payout Share in respect of a Vested Unit, such Vested Unit in the Participant’s Restricted Share Unit Account shall be terminated and cancelled.

- 13 - (b) Subject to the provisions of Section 7.5, if a Participant has validly elected to receive or otherwise receives Payout Shares in respect of Restricted Share Units which have become Vested Units, the Corporation shall deliver cash to the Administrator in an amount sufficient and within such time period as is reasonable to permit the Administrator to: (i) purchase such Payout Shares on the TSX or the NYSE or any other exchange on which the Common Shares are then listed and posted for trading; and (ii) deliver Payout Shares to Participants equivalent in number to the number of such Vested Units, within the time period required pursuant to Section 5.1(a). No fractional Common Shares may be paid to a Participant under the Plan. In the event that a Participant holds a fractional Vested Unit, the Participant shall be entitled to receive, on delivery of its Payout Shares, a cash payment in respect of such fractional Vested Unit equal to such fraction multiplied by the Market Price of one Common Share on the applicable Pricing Date (in the case of a U.S. Taxpayer, converted to U.S. Dollars using the Applicable Exchange Rate for the underlying Restricted Share Units). 5.2 Termination for Just Cause or by Voluntary Resignation Notwithstanding anything else contained herein, if a Participant has ceased to be an Employee by virtue of being terminated for Just Cause or voluntary resignation other than for Good Reason, all unvested Restricted Share Units in such Participant’s Restricted Share Unit Account shall be cancelled and the number of unvested Restricted Share Units in such account shall be deemed to be zero as of the Termination Date. Following the Termination Date, such Participant shall have no rights with respect to such cancelled Restricted Share Units or to any further benefits under the Plan, save and except for any Payout Amount or Payout Shares due and payable in respect of Vested Units for which the Vesting Date occurred prior to the Termination Date and any Common Shares in such Participant’s Common Share Account. 5.3 Death, Disability or Retirement of a Participant If a Participant ceases to be an Employee as a result of death, Disability or Retirement: (a) notwithstanding Section 4.1(h), but subject to Section 5.3(b), all of the Restricted Share Units of a Participant shall become Vested Units and shall be redeemed on the date of the death or Retirement of the Participant or on the date on which the Participant’s employment is terminated as a result of the Disability of the Participant; (b) the amount payable in respect of such Restricted Share Units: (i) where the Participant has been in Service for less than 15 years, and in the case of Retirement, has provided the Corporation and/or any of its Subsidiaries, as applicable, with at least 90 days’ prior written notice of such Retirement, shall be prorated to reflect the actual period between the Grant Date and the date the Participant ceased to be employed as a result of death, Disability or Retirement, as the case may be; and (ii) where the Participant has been in Service for 15 years or more, and in the case of Retirement, has provided the Corporation and/or any of its Subsidiaries, as applicable, with at least 90 days’ prior written notice of such Retirement, shall be determined as if the Participant continued to be

- 14 - an Employee on the Vesting Date of each Restricted Share Unit in such Participant’s Restricted Share Unit Account, subject to the discretion of the Committee to determine that special circumstances exist that reasonably justify an adjustment to the amount which would otherwise be paid to a Participant pursuant to this Section 5.3(b); and (c) in the case of the death of a Participant, the Participant’s designated beneficiary or estate will be entitled to receive payment, if any, in respect of the Restricted Share Units of the Participant in accordance with paragraph (b) above. For greater certainty, a Participant who ceases to be employed as a result of death, Disability or Retirement will receive the Payout Amount in respect of all Vested Units, as adjusted to the extent required in accordance with Section 5.3(b)(i), unless the Administrator has received from the Participant a valid election to receive Payout Shares prior to the date of termination of Service. If a Participant retires pursuant to Section 5.3(b)(i) and validly elects to receive Payout Shares, the number of Payout Shares to be delivered to such Participant shall be equal to the aggregate Payout Amount in respect of such Participant’s Vested Units determined pursuant to Section 5.3(b)(i) divided by the Market Price of one Common Share calculated as of the date of termination. 5.4 Involuntary Termination If a Participant ceases to be an Employee as a result of involuntary termination other than (a) death, Disability or Retirement, (b) as a result of termination for Just Cause or voluntary resignation, or (c) any circumstance that gives rise to the settlement of awards in accordance with Section 4.2(d): (a) if the Vesting Date of a Restricted Share Unit occurs after the Termination Date such Restricted Share Unit shall be terminated and cancelled and deemed to have zero value as of the effective date of termination; and (b) if the Vesting Date of a Restricted Share Unit occurs on or prior to the Termination Date, such Restricted Share Unit shall remain outstanding until paid and cancelled in accordance with Section 5.1. ARTICLE 6 SETTLEMENT IN COMMON SHARES 6.1 Delivery of Payout Shares (a) In connection with the delivery of Payout Shares: (i) any Common Shares purchased by the Administrator on a Participant’s behalf shall be allocated by the Administrator to the Participant’s account with the Administrator or a financial intermediary approved by the Administrator (the “Common Share Account”). The Participant shall receive an electronic and/or written notification following each allocation of Payout Shares to the Participant’s Common Share Account in accordance with the customary reporting practices of the Administrator; or

- 15 - (ii) to the extent that the Corporation or any of its Subsidiaries acts as Administrator, the Participant will be required to open an account with a financial intermediary approved by the Corporation, into which the Corporation shall credit any Payout Shares payable to the Participant by book entry, direct registration advice or other electronic evidence of share ownership utilized by such financial intermediary. If the Participant receives Payout Shares from the Corporation pursuant to this Section 6.1(a)(ii), the Participant shall also receive an electronic or written notification from the Corporation of the number of Payout Shares deposited by the Corporation with such Participant’s financial intermediary. (b) Any evidence of share ownership delivered by the Administrator pursuant to the Plan shall be delivered to the Participant at the address of the Participant on record with the Corporation or its Subsidiary, as applicable. 6.2 Compliance with U.S. Securities Law Notwithstanding any provision of the Plan to the contrary, the delivery of Payout Shares pursuant to the Plan will be subject to compliance with all Applicable Laws with respect to such securities and with the requirements of any stock exchange or marketplace upon which the Common Shares may then be listed. Without limiting the foregoing, no Participant shall be entitled to elect to receive (or receive) Payout Shares, and no Payout Shares shall be delivered, under the Plan unless (a) a registration statement under the U.S. Securities Act of 1933, as amended (the “Securities Act”), has, at the time of delivery, been filed with the U.S. Securities and Exchange Commission and is effective with respect to the Payout Shares delivered under the Plan or (b) in the absence of an effective registration statement under the Securities Act, Payout Shares may be delivered to a Participant under the Plan in the sole discretion of the Corporation, if in the opinion of legal counsel to the Corporation, (i) the Payout Shares to be delivered under the Plan may be delivered to such Participant in accordance with the terms of an applicable exemption from the registration requirements of the Securities Act and (ii) such Participant is eligible to receive such Payout Shares pursuant to the applicable exemption. A PARTICIPANT IS CAUTIONED THAT DELIVERY OF PAYOUT SHARES UPON THE VESTING OF RESTRICTED SHARE UNITS GRANTED PURSUANT TO THE PLAN MAY NOT OCCUR UNLESS THE FOREGOING CONDITIONS ARE SATISFIED. The inability of the Corporation to obtain from any regulatory body having jurisdiction the authority, if any, deemed by the Corporation’s legal counsel to be necessary for the lawful delivery of Payout Shares will relieve the Corporation of any liability in respect of the failure to deliver such Payout Shares as to which such requisite authority has not been obtained. As a condition to any delivery of Payout Shares, the Corporation may require the Participant to satisfy any qualifications that may be necessary or appropriate to evidence compliance with any Applicable Law (including any applicable exemption from the registration requirements of the Securities Act) and to make any representation or warranty with respect to such compliance as may be requested by the Corporation. In addition, in the sole discretion of the Corporation, in the event that any Payout Shares will be delivered under the Plan to any Participant pursuant to an exemption from the registration requirements of the Securities Act, the Corporation shall be entitled to place such legends or similar restrictions on such Payout Shares as may be required to identify such Payout Shares as “restricted securities” within the meaning of Rule 144(a)(3) under the Securities Act, if in the opinion of legal counsel to the Corporation such action is required under Applicable Law to comply with such exemption from registration. From time to time, the Board, the Committee and appropriate officers of the Corporation are authorized to take the actions necessary and appropriate to file required documents with

- 16 - governmental authorities, stock exchanges, and other appropriate Persons to permit or facilitate the delivery of Common Shares pursuant to the Plan. ARTICLE 7 ADMINISTRATION 7.1 Administration The Plan shall be administered by the Committee. Among other things, the Committee shall have full and complete authority to: (a) interpret the Plan; (b) establish, amend and rescind any rules and regulations relating to the Plan; (c) make any other determinations that it deems necessary or desirable for the administration of the Plan, including any determination required to comply with Section 409A; and (d) subject to the terms of the Plan, delegate to Employees or to third parties, including the Administrator, the whole or any part of the administration of the Plan and determine the scope and terms and conditions of such delegation, including the authority to prescribe rules and regulations under the Plan. The Committee may correct any defect or supply any omission or reconcile any inconsistency in the Plan in the manner and to the extent the Committee deems necessary or desirable. Any decisions of the Committee in the interpretation and administration of the Plan, as described herein, shall lie within its sole and absolute discretion and shall be final, conclusive and binding on all parties concerned and their beneficiaries, legal representatives and successors, as applicable, and the shareholders of the Corporation. 7.2 Unfunded Obligation Unless otherwise determined by the Committee, the Plan will be an unfunded obligation of the Corporation and the Corporation’s obligations hereunder shall constitute general, unsecured obligations, payable solely out of its general assets, and no Participant or other person shall have any right to any specific assets of the Corporation. The Corporation shall not segregate any assets for the purpose of funding its obligations with respect to the Restricted Share Units granted hereunder and shall not be deemed to be a trustee of any amounts to be distributed or paid pursuant to the Plan. No liability or obligation of the Corporation under the Plan shall be deemed to be secured by any pledge of, or encumbrance on, any property or assets of the Corporation. To the extent any individual holds rights under the Plan, such rights (unless otherwise determined by the Committee) shall be no greater than the rights of an unsecured general creditor of the Corporation. 7.3 Amendment, Suspension and Termination The Plan may be amended, suspended or terminated at any time by the Board, in whole or in part, except as to rights already accrued by the Participants (unless such Participant consents to any such change in writing). If the Plan is terminated, prior awards shall, at the discretion of the Committee, either (a) become immediately payable in accordance with Section 4.2, 5.1 or 5.3, as applicable, or (b) remain outstanding and in effect in accordance with their applicable terms and conditions. 7.4 Cost of Administration The Corporation will be responsible for all costs relating to the administration of the Plan.

- 17 - 7.5 Withholding Taxes If the Corporation or a Subsidiary shall be required to withhold any amounts by reason of any federal, provincial, state or local tax rules or regulations in respect of the payment of a Payout Amount or the delivery of Payout Shares to a Participant, the Corporation or the Subsidiary shall be entitled to deduct and withhold such amounts from the entitlements of Participants in respect of Vested Units, from other income of the Participant or, alternatively, the Corporation or Subsidiary shall require the Participant to provide funds to satisfy such withholding obligation or make other arrangements that are satisfactory to the Corporation or Subsidiary, as the case may be. ARTICLE 8 CLAWBACK 8.1 Clawback of Payout Amounts, Payout Shares and Restricted Share Units Notwithstanding any other provision of the Plan, in the event of: (a) a restatement of financial results of the Corporation or of any Subsidiary employer of a Participant due to material non-compliance with any financial reporting requirement under applicable laws, other than as a result of a change or amendment in accounting principles or applicable laws (a "Restatement"); or (b) the determination by the Committee that fraud, gross negligence or intentional misconduct by one or more Participants has occurred, whether or not such conduct gives rise to a Restatement, the Committee may determine to recoup, require repayment of or cancel any compensation linked to the financial or share performance of the Corporation paid, awarded or granted to any Participant, including any arising pursuant to the Plan, and any profits realized from the sale of Payout Shares by any such Participant, in each case in respect of the 12 month period following the first public issuance or filing of the financial results that are subject of the Restatement, or if there is no Restatement, any event of fraud, gross negligence or intentional misconduct. ARTICLE 9 ASSIGNMENT 9.1 No Assignment A Restricted Share Unit is personal to the Participant and is non-assignable. No Restricted Share Unit granted hereunder shall be pledged, hypothecated, charged, transferred, assigned or otherwise encumbered or disposed of by the Participant, whether voluntarily or by operation of law, otherwise than by testate succession or the laws of descent and distribution, and any attempt to do so will cause such Restricted Share Unit to be null and void. During the lifetime of the Participant, a Restricted Share Unit shall be redeemable only by the Participant and, upon the death of a Participant, the person to whom the rights shall have passed by testate succession or by the laws of descent and distribution may redeem any Restricted Share Units in accordance with the terms hereof and the Grant Agreement. For greater certainty, the limitations imposed by this Section 9.1 do not apply in any way to Payout Shares which are held in the Common Share Account of or have been delivered to a Participant in the Plan, however held.

- 18 - 9.2 Currency All payments under the Plan shall be made in Canadian dollars, except payments made to Participants who are U.S. Taxpayers, which will be denominated in U.S. Dollars. 9.3 Successors and Assigns The Plan shall be binding on all successors and assigns of the Corporation and a Participant, including, without limitation, the estate of such Participant and the executor, administrator or trustee of such estate, or any receiver or trustee in bankruptcy or representative of the Participant’s creditors. ARTICLE 10 CERTAIN RULES APPLICABLE TO U.S. TAXPAYERS 10.1 Intent To the extent applicable to a Participant, it is intended that each Restricted Share Unit granted under the Plan shall be exempt from or comply with the requirements of Section 409A of the Internal Revenue Code of 1986, as amended (“Section 409A”). Notwithstanding the foregoing, the tax treatment of the benefits provided under the Plan is not warranted or guaranteed. Neither the Corporation, its Subsidiaries nor their respective directors, officers, employees or advisers shall be held liable for any taxes, interest, penalties or other monetary amounts owed by a Participant (or any other individual claiming a benefit through the Participant) as a result of the Plan. 10.2 Separation from Service If the Committee determines in its sole discretion that any Restricted Share Unit granted to a Participant who is at the time of the grant, or subsequently becomes, a U.S. Taxpayer must comply with Section 409A, references in the Plan to a termination or cessation of employment or like terms shall mean, with respect to such U.S. Taxpayer, a “separation from service” as defined under Section 409A. 10.3 Six-Month Delay Notwithstanding anything in the Plan to the contrary, if at the time of a U.S. Taxpayer’s separation from service, the Committee determines in its sole discretion (a) that such U.S. Taxpayer is considered to be a “specified employee” within the meaning of Section 409A and (b) that any Restricted Share Unit of such U.S. Taxpayer must comply with Section 409A, and such Restriction Share Unit is payable upon the U.S. Taxpayer’s separation from service, such payment shall not commence prior to the first Business Day following the date which is six months after the U.S. Taxpayer’s separation from service (or if earlier than the end of the six month period, the date of the U.S. Taxpayer’s death). For the avoidance of doubt, the provisions of this Section 10.3 shall not apply to (i) any payment that becomes due on a Pricing Date that occurs prior to the U.S. Taxpayer’s separation from service, (ii) any payment that becomes due as a result of the U.S. Taxpayer’s death, and (iii) any payment with respect to a Restricted Share Unit that qualifies for an exception to the requirements of Section 409A.

- 19 - 10.4 Good Reason Notwithstanding the definition of "Good Reason" in Section 1.3 of the Plan, a U.S. Taxpayer shall not be considered to have terminated his or her employment for Good Reason unless the termination qualifies for the safe harbor provided in Section 1.409A-1(n)(2)(ii) of the Treasury Regulations. 10.5 Impact of Blackout Period Notwithstanding anything in the Plan to the contrary, if the Committee determines in its sole discretion that any Restricted Share Unit granted to a Participant who is at the time of the grant, or subsequently becomes, a U.S. Taxpayer must comply with Section 409A and if such Restricted Share Unit becomes a Vested Unit on or before December 31 of any year, but due to the continuance of a Blackout Period or otherwise, the U.S. Taxpayer would not otherwise receive the Payout Amount or Payout Share in respect of such Vested Unit pursuant to Section 4.2, 5.1, 5.3, as applicable, before March 15 of the immediately following year (the “Outside Date”), the Corporation shall, irrespective of any election to receive a Payout Share made pursuant to Section 4.1(f), satisfy its obligation in respect of such Vested Unit by paying the Payout Amount in respect of such Vested Unit before the Outside Date. If the Payout Amount is paid to a U.S. Taxpayer pursuant to this Section 10.5, such Payout Amount shall be determined using a Market Price fixed by the Committee, acting reasonably (converted to U.S. Dollars using the Applicable Exchange Rate for the underlying Restricted Share Units). 10.6 Risk of Forfeiture Notwithstanding anything in the Plan to the contrary, no payment hereunder shall be made to a U.S. Taxpayer pursuant to Section 4.2 or Article 5 in respect of any Restricted Share Unit, including any Payout Amount or Payout Share, unless such U.S. Taxpayer is an Employee on the date that such payment is made to such U.S. Taxpayer, except that in the case of a U.S. Taxpayer whose employment is terminated for any reason (including death or Disability or an Involuntary Employment Action), payment may be made to such U.S. Taxpayer at any time before March 15th of the year immediately following the year in which such termination takes place.

SCHEDULE A FORM OF GRANT AGREEMENT This agreement is entered into this _____day of _________________, 20_____, between Fortis Inc. (the “Corporation”) and __________________________________ (the “Participant”) pursuant to the 2020 restricted share unit plan (the “Plan”) adopted by the Corporation as on January 1, 2020, as may be amended, restated, supplemented or otherwise modified from time to time. Pursuant to and in accordance with the Plan and in consideration of [Cdn.$1.00 / US$1.00] and services rendered by such Participant to the Corporation, the Corporation agrees to grant the following restricted share units (the “Restricted Share Units”) of the Corporation to the Participant: Number of Restricted Share Units Grant Date Election Deadline Vesting Date In addition to the terms set out in this agreement, the granting and redemption of the Restricted Share Units are subject to the terms and conditions of the Plan, all of which are incorporated into and form an integral part of this agreement, including the termination provisions set forth in Article 5. This agreement shall be binding upon and enure to the benefit of the Corporation, its successors and assigns and the Participant and the legal representatives of his or her estate and any other person who acquires the Participant’s rights in respect of the Restricted Share Units by testate succession or by the laws of descent and distribution. By executing this agreement, the Participant confirms and acknowledges that he or she: (a) has been provided with a copy of the Plan and has reviewed the Plan, including the termination provisions set forth in Article 5, prior to executing the agreement; (b) has been given adequate opportunity to review and discuss the agreement and the transactions contemplated hereby with legal counsel or other advisors, (c) has not been induced to enter into this agreement or acquire any Restricted Share Units by expectation of employment or continued employment with the Corporation; (d) fully understands his or her rights and obligations under this agreement and is executing this agreement voluntarily; and (e) is bound by all of the terms and conditions of this agreement and the Plan applicable to the Restricted Share Units. The Participant acknowledges and agrees that he or she will not be entitled to elect to receive the Payout Amount under the Plan and shall receive a Payout Share for 50% of the Vested Units covered by this agreement where the Participant does not satisfy his or her Share Ownership Requirements on the Election Deadline for the Restricted Share Units covered by this agreement (including any Restricted Share Units credited in respect of such Restricted Share Units pursuant to Section 4.3 of the Plan). In certain other circumstances enumerated in the Plan, the Participant may lose the right to elect to receive Payout Shares. Any election to receive Payout Shares must be made in respect of 50% or 100% of the Restricted Share Units covered by this

- 2 - agreement (including any Restricted Share Units credited in respect of such Restricted Share Units pursuant to Section 4.3 of the Plan). If no election is provided by an eligible Participant in writing to the Administrator on or before the Election Deadline, the Participant will be deemed to have elected to receive the Payout Amount in respect of each Vested Unit. Notwithstanding the above, the Participant acknowledges and agrees that there are certain circumstances, as enumerated in the Plan, pursuant to which his or her Restricted Share Units may be cancelled or he or she may not receive a Payout Amount. Among other things, the Participant’s right to a Restricted Share Unit or to receive a Payout Amount may be impacted by a number of factors, including but not limited to, the termination of the Plan by the Corporation, a clawback pursuant to Article 8 of the Plan, a Change of Control, termination or voluntary resignation of the Participant’s employment (including termination for Just Cause and involuntary termination) or death, Disability or Retirement of the Participant. For greater certainty, the Participant confirms and acknowledges that he or she has: (a) reviewed and fully understands the implications of the Plan, including: (i) Article 5 (Payment and Participant’s Termination) of the Plan, as modified by Article 10 in the case of a U.S. Taxpayer; and (ii) Article 8 (Clawback); and (b) been given adequate opportunity to review and discuss such provisions of the Plan with the Corporation, independent legal counsel and any other applicable advisers. If you are or become a U.S. Taxpayer after the date of this agreement, please contact your local Human Resources Department. [Remainder of page intentionally left blank.]

FORTIS INC. by Name: Title: [Participant]

4854-9934-2604.3 EMPLOYMENT AGREEMENT Brian Slocum This EMPLOYMENT AGREEMENT (the “Agreement”) is dated as of February 14, 2022 (the “Effective Date”) by and between ITC Holdings Corp. (the “Company”) and Brian Slocum (the “Executive”). WHEREAS, the Executive and the Company currently are parties to an employment agreement dated as of December 21, 2012 governing the terms of the Executive’s employment with the Company (the “Prior Employment Agreement”); WHEREAS, the Company and the Executive desire to amend and restate the terms of Executive’s employment; WHEREAS, the Company and Executive intend that this Agreement shall supersede in its entirety the Prior Employment Agreement, which Prior Employment Agreement is, by this Agreement, hereby terminated in its entirety. NOW, THEREFORE, in consideration of the premises and mutual covenants herein and for other good and valuable consideration, and intending to be legally bound hereby, the parties agree as follows: 1. Term. Subject to the provisions of Section 7 of this Agreement, Executive shall be employed by ITC Holdings Corp. (the “Company”), and any of their subsidiaries and/or affiliates that the Board of Directors of the Company (the “Board”) shall designate (collectively, the “Employer”) for an initial two-year period commencing on the Effective Date and ending on February 13, 2024 (the “Initial Period) on the terms and subject to the conditions set forth in this Agreement; provided, however, that such period of employment shall automatically be extended for successive one-year periods (a “Renewal Period”) unless the Employer or Executive, at least thirty (30) days prior to the end of any such period, provides written notice to the other party of the intent not to extend such period for any additional one-year period. 2. Position. a. Executive shall serve in the capacity of Senior Vice President. In such position, Executive shall have such duties and authority as the Chief Executive Officer of the Employer (the “Chief Executive Officer”) determines from time to time. If requested, Executive shall also serve as a member of the Board without additional compensation. b. Executive will devote Executive’s full business time and best efforts to the performance of Executive’s duties hereunder and will not engage in any other business, profession or occupation for compensation or otherwise which would conflict or interfere with the rendition of such services either directly or indirectly, without the prior written consent of the Chief Executive Officer; provided that nothing herein shall preclude Executive, subject to the prior approval of the Chief Executive Officer, from accepting appointment to or continue to serve on any board of directors or trustees of any business corporation or any charitable organization;

4854-9934-2604.3 2 provided in each case, and in the aggregate, that such activities do not conflict or interfere with the performance of Executive’s duties hereunder or conflict with Section 8 of this Agreement. 3. Base Salary. Employer shall pay Executive a base salary at the annual rate of $400,000.00 payable in regular installments in accordance with the Employer’s normal payroll practices. Executive’s base salary shall be reviewed annually by the Chief Executive Officer and Executive shall be entitled to such increases in Executive’s base salary, if any, as may be determined from time to time in the sole discretion of the Chief Executive Officer. Executive’s annual base salary, as in effect from time to time, is hereinafter referred to as the “Base Salary”. 4. Annual Bonus. Executive shall be eligible to earn an annual bonus award in respect of each fiscal year of Employer (an “Annual Bonus”), payable upon the Employer’s achievement of certain performance targets established by the Board and after application of any multipliers approved by the Board, pursuant to the terms of an incentive compensation plan established by the Board (the “Incentive Plan”). Executive’s target Annual Bonus for each fiscal year of Employer shall be that percentage of the Executive’s Base Salary as the Board may establish from time to time (the “Target Bonus”), but shall generally be sixty percent (60%) of Executive’s Base Salary, plus any multipliers approved by the Board. The foregoing notwithstanding, any Annual Bonus to which Executive is entitled shall be paid no later than two and a half (2-1/2) months after the later of the end of the fiscal or calendar year in which such Annual Bonus is no longer subject to a substantial risk of forfeiture (as defined under Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”) and Internal Revenue Service (“IRS”) guidance issued thereunder). 5. Employee Benefits and Perquisites; Business Expenses. a. Employee Benefits. Executive shall be entitled to participate in the Employer’s employee benefit and retirement plans (the “ITC Plans”) as in effect from time to time as determined by the Board, which provide certain benefits (collectively the “Employee Benefits”) to Executive, including the following plans: (i) welfare benefit plans (including active medical, life, disability, flexible spending accounts and other related welfare plans); (ii) fringe benefit plans (including education assistance and adoption assistance); (iii) retiree welfare benefit plans (medical and life insurance); (iv) qualified and non-qualified defined benefit and defined contribution plans; and (v) vacation plans (except that there shall be limitations set on the amount of vacation that Executive may carry forward from any given calendar year to the next). b. Perquisites. Executive shall also be entitled to receive such perquisites as are generally provided to executives of the Employer from time to time, as determined by the Board (or a compensation committee thereof). c. Business Expenses. Reasonable business expenses incurred by Executive in the performance of Executive’s duties hereunder shall be reimbursed by the Employer in accordance with the Employer’s policies; provided that such reimbursement shall in any event occur no later than ninety (90) days after the date on which an eligible business expense is incurred.

4854-9934-2604.3 3 6. Equity Participation. Executive’s equity participation in the Company has been or will be documented pursuant to some or all of the ITC Holdings Corp. 2017 Omnibus Plan, the ITC Holdings Corp. Executive Omnibus Plan, and the Fortis, Inc. 2020 Restricted Share Unit Plan, and any amendments thereto, or in any successor plan or plans, and in one or more award agreements associated therewith, each as executed by the Executive, the Company, and its shareholders, as applicable (such documents, collectively, the “Equity Documents”). The Company and Executive each acknowledges that the terms and conditions of the aforementioned documents govern Executive’s acquisition, vesting, holding, sale or other disposition of Executive’s equity in the Company, and Executive’s and the Company’s rights with respect thereto. 7. Termination of Employment. Executive’s employment hereunder may be terminated by either party at any time and for any reason, subject to the applicable provisions of this Section 7; provided that Executive will be required to give the Employer at least thirty (30) calendar days advance written notice of any resignation of Executive’s employment (the “Executive Notice Period”); and provided, further, that the Employer will be required to give Executive at least ten (10) business days advance notice of a termination of Executive’s employment by the Employer without Cause (other than in the event of Executive’s Disability) (the “Employer Notice Period”). With respect to either the Executive Notice Period or the Employer Notice Period, the Employer may provide Executive with a payment equal to the Base Salary that would otherwise be payable in respect of any portion of the Executive or Employer Notice Period which the Employer elects to waive. Notwithstanding any other provision of this Agreement (and except as may otherwise be provided in the Equity Documents), the provisions of this Section 7 shall exclusively govern Executive’s rights upon termination of employment with the Employer. a. By the Employer For Cause or By Executive Resignation Without Good Reason. i. Executive’s employment hereunder may be terminated by the Employer for Cause (as defined below) and shall terminate automatically upon Executive’s resignation without Good Reason. ii. For purposes of this Agreement, “Cause” shall mean (A) Executive’s continued failure substantially to perform Executive’s duties hereunder to the satisfaction of the Company (other than as a result of total or partial incapacity due to physical or mental illness) for a period of fourteen (14) calendar days following written notice by the Employer to Executive of such failure, (B) theft, dishonesty, falsification of Company records, or conduct amounting to a conflict of interest by Executive, (C) engagement by Executive of conduct that could cause harm to the reputation or standing of Employer or which could impair Executive’s ability to perform Executive’s duties for Employer, (D) Executive’s willful malfeasance or willful misconduct in connection with Executive’s duties hereunder or any act or omission which is injurious to the financial condition or business reputation of the Employer or affiliates, (E) a violation by Executive of any material Employer rule, regulation, procedure or policy, (F) while on Company premises, or while performing Executive’s job duties, possessing or using an illegal (under federal or state law) or controlled substance or being under the influence of, or having Executive’s performance affected by, an illegal or controlled substance, or by alcohol, or (G) Executive’s breach of the provisions of Sections 8 or 9 of this Agreement.

4854-9934-2604.3 4 iii. If Executive’s employment is terminated by the Employer for Cause or if Executive resigns without Good Reason (other than due to a Disability, as such term is defined below), Executive shall be entitled to receive: (1) any Base Salary earned through the date of termination, payable at such time(s) as the Base Salary would otherwise be payable in accordance with the normal payroll practices of the Employer; (2) any Annual Bonus earned but unpaid as of the date of termination for any previously completed fiscal year, payable in a lump sum at such time as such Annual Bonus would normally be paid under the Incentive Plan as provided in Section 4 hereof; (3) reimbursement for any unreimbursed business expenses properly incurred by Executive through the date of termination, payable at such time(s) and in accordance with the Employer’s policy prior to the date of Executive’s termination; provided that such reimbursement shall in any event occur no later than ninety (90) days after the date on which an eligible business expense is incurred; and (4) such Employee Benefits, if any, as to which Executive may be entitled under the applicable ITC Plans upon termination of employment hereunder. The payments and benefits described in clauses (1) through (4) hereof are referred to, collectively, as the “Accrued Rights”. Following such termination of Executive’s employment by the Employer for Cause or resignation by Executive without Good Reason, except as set forth in this Section 7(a)(iii), Executive shall have no further rights to any compensation or any other benefits under this Agreement. b. Disability or Death. i. Executive’s employment hereunder shall terminate upon Executive’s death, and may be terminated by the Employer if Executive experiences a “Disability” (as such term shall be defined from time to time under Code Section 409A). Any question as to the existence of the Disability of Executive as to which Executive and the Employer cannot agree shall be determined in writing by a qualified independent physician mutually acceptable to Executive and the Employer. If Executive and the Employer cannot agree as to a qualified independent physician, each shall appoint such a physician and those two physicians shall select a third who shall make such determination in writing. The determination of Disability made in writing to the Employer and Executive shall be final and conclusive for all purposes of the Agreement. ii. Upon termination of Executive’s employment hereunder for Disability or death, Executive, Executive’s then spouse, or Executive’s estate (as the case may be), shall be entitled to receive: (1) the Accrued Rights; and

4854-9934-2604.3 5 (2) a pro rata portion of the Target Bonus (calculated based on the number of days Executive was employed hereunder during the calendar year in which the date of such termination of employment occurs, relative to the applicable full calendar year), payable in a lump sum within fifteen (15) business days after the date of such termination of employment. Following Executive’s termination of employment due to death or Disability, except as set forth in this Section 7(b)(ii), Executive shall have no further rights to any compensation or any other benefits under this Agreement. c. By the Employer Without Cause, by Executive for Good Reason, or Non-Renewal by Employer. i. Executive’s employment hereunder may be terminated (A) by the Employer without Cause (which shall not include Executive’s termination of employment due to death or Disability), (B) by Executive for Good Reason (as defined below), or (C) as the result of non-renewel of the Initial Period or a Renewal Period, by Employer. ii. For purposes of this Agreement, “Good Reason” means the occurrence of any of the following without consent of Executive: (1) any material reduction in Executive’s Base Salary; (2) any material breach by the Employer of this Agreement; (3) any material reduction in the status, position or responsibilities of Executive; (4) the long-term assignment of duties to Executive that are materially below the level of Executive’s position and responsibilities described in this Agreement based upon the staffing level and industry of the Employer; or (5) the Employer requiring Executive to be principally based at any office or location more than fifty (50) miles from Executive’s principal work location as of the Effective Date. Notwithstanding the foregoing, Good Reason shall not exist if (1) Executive fails to give the Employer written notice of Executive’s intention to terminate employment with the Employer for Good Reason within thirty (30) calendar days following Executive’s first knowledge of any such occurrence, which notice shall identify in reasonable detail the basis therefore, (2) within thirty (30) calendar days of receipt of notice, the Employer remedies the occurrence alleged to constitute Good Reason, or (3) Employer fails to timely remedy the occurrence alleged to constitute Good Reason and Executive has not separated from service within thirty (30) calendar days following expiration of the Cure Period. iii. If Executive’s employment is terminated by the Employer pursuant to this Section 7 without Cause (other than by reason of Executive’s death or Disability), by Executive for Good Reason, or as the result of non-renewal of the Initial Period or a Renewal

4854-9934-2604.3 6 Period, by Employer, in addition to receiving the Accrued Rights, subject to Executive’s execution and non-revocation of a release of all claims against Employer as provided in Section 7(f), Executive shall be entitled to receive: (1) a pro rata portion of the Target Bonus (calculated based on the number of days Executive was employed hereunder during the calendar year in which the date of such termination of employment occurs, relative to the applicable full calendar year), payable based upon the Employer’s actual achievement of the performance targets for such year as determined under and at the time that such an Annual Bonus (if any) would normally be paid as set forth in Section 4 hereof; (2) one or both of the following series of payments: (I) continued payment in substantially equal installments and in accordance with the normal payroll practices of Employer, for a period of two (2) years following the date of termination of Executive’s employment hereunder, of Executive’s annual rate of Base Salary as in effect immediately prior to such termination; and (II) in the event that Executive’s employment is terminated hereunder within a period beginning six (6) months before and ending two (2) years after a Change in Control occurs, Executive shall receive an amount equal to two (2) times the average of each of the Annual Bonuses that were payable to Executive (including any portion of any such Annual Bonus the receipt of which Executive elected to defer) for the three fiscal years immediately preceding the fiscal year in which Executive’s employment terminates, payable in substantially equal installments and in accordance with the normal payroll practices of Employer, over the period during which the Executive’s Base Salary will continue to be paid pursuant to the foregoing provisions of this Section 7(c)(iii)(2) (or, if applicable, over the remaining period during which such Base Salary payments will be made, in the event the Executive’s termination occurs within the six (6) month period before any such Change in Control occurs, beginning with the first payment due thirty (30) days after the Change in Control occurs); (3) a stipend, to be used at Executive’s discretion, to pay health insurance premiums, or for any other purpose, during that period ending on the earlier of (I) the date Executive is eligible (even if Executive does not enroll) for coverage under another employer-sponsored group health plan in connection with other employment obtained after Executive’s termination hereunder; or (II) twelve (12) months after the date of termination of Executive’s employment hereunder. The stipend shall be paid to Executive each payroll period (in accordance with the normal payroll practices of Employer, but subject to any applicable limitations on payments to a “specified employee” within the meaning of Code Section 409A, as set forth below) as a taxable amount equal to the sum of (III) the Employer’s portion of the premium payments due with respect to other executives with the same coverage(s) for such payroll period, plus (IV) such additional amount as is required to pay any income and/or payroll

4854-9934-2604.3 7 taxes due on the sum of the premium payment and the additional tax gross-up payment (as determined by the Employer’s independent accountants, assuming that the Executive pays income taxes at the highest applicable marginal rates for the calendar year in which such payments are to be made); and (4) outplacement services of a duration of up to two (2) years from the date of termination (or until such earlier date on which Executive obtains other employment), and at a level commensurate with Executive’s former position with the Employer, and by a provider as determined by the Employer in good faith. (5) The foregoing notwithstanding, in the event Executive is a “specified employee” within the meaning of Code Section 409A and in accordance with the involuntary “separation pay plan” exception under the Code Section 409A regulations, the total of all amounts paid to Executive pursuant to Sections 7(c)(iii)(2) and (3) hereof (and any other amount payable pursuant to this Section 7(c)(iii) that constitutes a payment under a “nonqualified deferred compensation plan” within the meaning of Code Section 409A) within the first six (6) months following such termination pursuant to this subsection shall not exceed two times the lesser of (I) the sum of the Executive’s annualized compensation based upon the annual rate of pay for services provided to the Employer for the calendar year preceding the calendar year in which the termination occurs (adjusted for any increase during that year that was expected to continue indefinitely, if the Executive had not terminated), or (II) the Code Section 401(a)(17) limit on compensation for the calendar year in which the Executive terminates. To the extent a portion of any such amount exceeds such limitation, the payment shall not commence until the first business day following the date that is six months after the date of termination of Executive’s employment hereunder (the period during which such payments may be limited under Code Section 409A, the “409A Period”), at which time Employer shall (III) pay to Executive, in one lump sum, an amount equal to all such amounts that would otherwise have been payable during the 409A Period, and (IV) thereafter continue to pay the remaining unpaid portion of any such amounts in accordance with the normal payroll practices of Employer, at the time or through the end of the period(s) otherwise provided above in this subsection. (6) Following Executive’s termination of employment by the Employer without Cause (other than by reason of Executive’s death or Disability), by Executive for Good Reason, or as the result of non-renewal of the Initial Period or a Renewal Period, by Employer, except as set forth in this Section 7(c)(iii), Executive shall have no further rights to any compensation or any other benefits under this Agreement. d. Notice of Termination. Any purported termination of employment by the Employer or by Executive (other than due to Executive’s death) shall be communicated by written Notice of Termination to the other party hereto in accordance with Section 13(h) hereof. For purposes of this Agreement, a “Notice of Termination” shall mean a notice which shall indicate the specific termination provision in this Agreement relied upon and shall set forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of employment under the provision so indicated. e. Board/Committee Resignation. Upon termination of Executive’s employment for any reason, Executive will be considered to have resigned, as of the date of such

4854-9934-2604.3 8 termination and to the extent applicable, from the Board (and any committees thereof) and the board of directors (and any committees thereof) of any of the Company’s affiliates. f. Execution of Release off all Claims; Non-Revocation. Upon termination of Executive’s employment without Cause, for Good Reason, or as the result of non-renewal of the Initial Period or a Renewal Period, by Employer, Executive agrees to execute a release (the “Release”) of all claims against the Company, its subsidiaries, affiliates, shareholders, directors, officers, employees, and agents, substantially in a form to be provided to Executive by Employer at such time. Notwithstanding anything set forth in this Agreement to the contrary, upon termination of Executive’s employment without Cause, for Good Reason, or as the result of non- renewal of the Initial Period or a Renewal Period, by Employer, Executive shall not receive any payments or benefits to which Executive may be entitled hereunder (other than those which by law cannot be subject to the execution of a release) if Executive does not execute or otherwise revokes such Release. Subject to the foregoing, if by no later than sixty (60) days after the date of termination of Executive’s employment without Cause, for Good Reason, or as the result of non-renewal of the Initial Period or a Renewal Period, by Employer, Executive has (A) not executed or has otherwise revoked such Release, or (B) Executive has executed the Release but the applicable revocation period referred to in the preceding sentence has not lapsed, then Executive shall in either case totally forfeit all payments and benefits to which Executive may be entitled under this Agreement (other than those which by law cannot be subject to the execution of a release), but this Agreement shall otherwise remain in full force and effect. In the event that prior to the end of such sixty (60) day period, Executive has properly executed such Release, has not revoked the Release, and the applicable revocation period for the Release has lapsed, and Executive has complied with Section 9(d)(ii) and (iii), the payments and benefits due to Executive hereunder shall commence being paid or provided with the next administratively feasible scheduled payroll date following the end of such revocation period; provided all payments that would otherwise have become due prior to such date shall be accumulated and paid when the first payment is made hereunder. The foregoing notwithstanding, in the event the sixty (60) day period referred to in this subsection begins in one taxable year of the Executive and ends in a second taxable year, any payments and benefits due to Executive hereunder (to the extent required to be restricted under Code Section 409A and IRS guidance issued thereunder) shall commence being paid or provided with the first scheduled payment date on or after the beginning of such second taxable year. 8. Non-Solicitation; Non-Hire; Non-Interference; Non-Competition. a. Acknowledgement. Executive acknowledges and recognizes the highly competitive nature of the businesses of the Employer and its affiliates and acknowledges that, in the course of the Executive’s employment with the Company, the Executive has and will become familiar with Confidential Information (as defined in Section 9), the restrictions in this Section 8 are necessary to protect the legitimate business interests of the Company, the covenants in this Section 8 are reasonable with respect to duration, geographical area and scope, and the covenants will not prevent the Executive from engaging in Executive’s profession or earning a living, and accordingly agrees to the following: b. Definitions. As used in this Agreement, the terms the terms set forth below have the following meanings:

4854-9934-2604.3 9 i. “Competitive Business” means (1) a business that (A) transmits electricity, or (B) develops or operates transmission facilities, and/or (C) provides technology, equipment or services related to the transmission of electricity, (2) any other business in which Employer engaged at any time during the last year of Executive’s employment, and (3) any business contemplated by Employer at any time during the last year of Executive’s employment. ii. “Customer” means any individual or entity with or through whom Employer has done business at any time in the previous three (3) year period. iii. “Person” means any individual, firm, partnership, joint venture, association, corporation or other business organization, entity or enterprise whatsoever, including any division or controlled or controlling affiliate of any Person. iv. “Prospective Customer” means any individual or entity, with or through whom Employer had communicated regarding doing business (however extensive or numerous the contact(s)), during the one (1) year period prior to the last day of Executive’s employment with Employer. v. “Restricted Period” means the period of time during which Executive is employed by Employer and one (1) year immediately thereafter. vi. “Restricted Territory” means any geographical area that is within 100 miles of any geographical area where the Employer or its affiliates transmitted electricity, or provided related technology, equipment or services, or otherwise conducted business at any time in the previous three (3) year period. vii. “Third Party” means by way of example and not limitation, any Employer distributor, vendor, supplier, contractor, consultant, representative, or other entity or individual with whom Employer does business, excluding Customers. c. Non-Solicitation; Non-Hire; Non-Interference. During the Restricted Period, Executive will not, without Employer’s written consent, whether on Executive’s own behalf or on behalf of or in conjunction with any Person, directly or indirectly: i. solicit, or assist in soliciting, in competition with the Employer, the business of any Customer or Prospective Customer; or ii. solicit or encourage any Employee to leave the employment of the Employer; or iii. hire any Employee who was employed by the Employer as of the last date of Executive’s employment or who left the employment of the Employer coincident with, or within one (1) year prior to or after, the last date of Executive’s employment; or iv. interfere with, or attempt to interfere with, business relationships (whether formed before, during, or after the date of this Agreement) between the Employer or any of its affiliates and any Customer, Prospective Customer, and/or Person.

4854-9934-2604.3 10 d. Non-Compete. During the Restricted Period, Executive will not, without Employer’s written request, whether on Executive’s own behalf or on behalf of or in conjunction with any Person, directly or indirectly: i. engage in a Competitive Business in the Restricted Territory; ii. enter the employ of, or render any services to, any Person who or which engages in a Competitive Business in the Restricted Territory; or iii. acquire a financial interest in, or otherwise become actively involved with, any Competitive Business, as an individual, partner, shareholder, officer, director, principal, agent, trustee or consultant e. Exception. Notwithstanding anything to the contrary in this Agreement, Executive may, directly or indirectly, own, solely as an investment, securities of any Person engaged in a Competitive Business which are publicly traded on a national or regional stock exchange or on the over-the-counter market if Executive (i) is not a controlling person of, or a member of a group which controls, such person and (ii) does not, directly or indirectly, own 5% or more of any class of securities of such Person. f. Discretionary Extension of Restricted Period. Employer may, in its sole discretion, extend the Restricted Period (and thereby the non-competition provisions of this Section 8) by one (1) additional year and, in consideration thereof, will provide Executive with continued payment in substantially equal installments and in accordance with the normal payroll practices of the Employer, for a period of one (1) year following the first anniversary of the last date of Executive’s employment hereunder, of Executive’s annual rate of Base Salary as in effect immediately prior to such date. In the event Employer elects to exercise its discretion to extend the Restricted Period as provided above, the Employer will notify Executive to this effect, by no later than six (6) months after the last date of Executive’s employment. The foregoing notwithstanding, such extension of the Restricted Period will not result in any similar extension of any other payments or benefits due to Executive under this Agreement. g. Automatic Extension of Restricted Period. In the event that Executive breaches a restriction set forth in Section 8, the Restricted Period shall automatically toll from the date of the first breach, and all subsequent breaches, until the resolution of the breach through private settlement, or judicial or other action, including all appeals. h. Modification of Restrictions. It is expressly understood and agreed that although Executive and the Employer consider the restrictions contained in this Section 8 to be reasonable, if a final judicial determination is made by a court of competent jurisdiction that the duration, geographic area, or scope contained in this Agreement is an unenforceable restriction against Executive, the provisions of this Agreement shall not be rendered void but shall be deemed amended to apply as to such maximum duration, geographic area and scope as such court may judicially determine or indicate to be enforceable. Alternatively, if any court of competent jurisdiction finds that any restriction contained in this Agreement is unenforceable, and such restriction cannot be amended so as to make it enforceable, such finding shall not affect the enforceability of any of the other restrictions contained herein.

4854-9934-2604.3 11 i. Survival. The provisions in this Section 8 shall survive the termination of Executive’s employment for any reason. 9. Confidentiality. a. Executive will not at any time (whether during or after Executive’s employment with the Employer) (i) retain or use for the benefit, purposes or account of Executive or any other Person; or (ii) disclose, divulge, reveal, communicate, share, transfer or provide access to any Person outside the Employer (other than its professional advisers who are bound by confidentiality obligations), any non-public, proprietary or confidential information -- including without limitation rates, trade secrets, know-how, research and development, software, databases, inventions, processes, formulae, technology, designs and other intellectual property, information concerning finances, investments, profits, pricing, costs, products, services, vendors, customers, clients, partners, investors, personnel, compensation, recruiting, training, advertising, sales, marketing, promotions, government and regulatory activities and approvals, and attorney client communications -- concerning the past, current or future business, activities and operations of the Employer, its subsidiaries or affiliates and/or any third party that has disclosed or provided any of same to the Employer on a confidential basis (“Confidential Information”) without the prior written authorization of the Board. b. “Confidential Information” shall not include any information that is (i) generally known to the industry or the public other than as a result of Executive’s breach of this covenant or any breach of other confidentiality obligations by third parties; (ii) made legitimately available to Executive by a third party without breach of any confidentiality obligation; or (iii) required by law to be disclosed; provided that Executive shall give prompt written notice to the Employer of such requirement, disclose no more information than is so required, and cooperate with any attempts by the Employer to obtain a protective order or similar treatment. c. Except as required by law, Executive will not disclose to anyone, other than Executive’s immediate family and legal or financial advisors, the existence or contents of this Agreement; provided that Executive may disclose to any prospective future employer the provisions of Sections 8 and 9 of this Agreement provided they agree to maintain the confidentiality of such terms. d. Upon termination of Executive’s employment with the Employer for any reason, Executive shall (i) cease and not thereafter commence use of any Confidential Information or intellectual property (including without limitation, any patent, invention, copyright, trade secret, trademark, trade name, logo, domain name or other source indicator) owned or used by the Employer, its subsidiaries or affiliates; (ii) immediately destroy, delete, or return to the Employer, at the Employer’s option, all originals and copies in any form or medium (including memoranda, books, papers, plans, computer files, letters and other data) in Executive’s possession or control (including any of the foregoing stored or located in Executive’s office, home, laptop or other computer, whether or not the Employer’s property) that contain Confidential Information or otherwise relate to the business of the Employer, its affiliates and subsidiaries, except that Executive may retain only those portions of any personal notes, notebooks and diaries that do not contain any Confidential Information; and (iii) notify and fully cooperate with the Employer regarding the delivery or destruction of any other Confidential Information of which Executive is or becomes aware.

4854-9934-2604.3 12 e. Executive shall not improperly use for the benefit of, bring to any premises of, divulge, disclose, communicate, reveal, transfer or provide access to, or share with the Employer any confidential, proprietary or non-public information or intellectual property relating to a former employer or other third party without the prior written permission of such third party. Executive hereby indemnifies, holds harmless and agrees to defend the Employer and its officers, directors, partners, employees, agents and representatives from any breach of the foregoing covenant. Executive shall comply with all relevant policies and guidelines of the Employer, including regarding the protection of confidential information and intellectual property and potential conflicts of interest. Executive acknowledges that the Employer may amend any such policies and guidelines from time to time, and that Executive remains at all times bound by their most current version. Notwithstanding anything set forth herein, the Company hereby represents and warrants that the Company shall not employ the provisions of this Section 9 in a manner that would interfere with Executive’s ability to obtain or retain any future employment that would not or does not otherwise violate Section 8 of this Agreement. f. Notwithstanding the foregoing, Executive acknowledges that Executive has been advised, and Executive understands that pursuant to the Defense of Trade Secrets Act (18 U.S.C. 1833), Executive shall not be held criminally or civilly liable under any federal or state trade secret law for the disclosure of a trade secret that is made in confidence to a federal, state or local government official, either directly or indirectly, or to an attorney, and is made solely for the purpose of reporting or investigating a suspected violation of law or regulation, or is made in a complaint or other document filed in a lawsuit or other proceeding, if such filing is made under seal a suspected violation of the law. g. The provisions of this Section 9 shall survive the termination of Executive’s employment for any reason. 10. Specific Performance. Executive acknowledges and agrees that the Employer’s remedies at law for a breach or threatened breach of any of the provisions of Section 8 or Section 9 would be inadequate and the Employer would suffer irreparable damages as a result of such breach or threatened breach. In recognition of this fact, Executive agrees that, in the event of such a breach or threatened breach, in addition to any remedies at law, the Employer, without posting any bond, shall be entitled to cease making any payments or providing any benefit otherwise required by this Agreement and obtain equitable relief in the form of specific performance, temporary restraining order, temporary or permanent injunction or any other equitable remedy which may then be available. 11. Developments. Executive will make full and prompt disclosure to the Employer of all inventions, discoveries, designs, developments, methods, processes, modifications, improvements, algorithms, databases, computer programs, formulae, techniques, trade secrets, graphics or images, audio or visual works, and other works of authorship (collectively “Developments”), whether or not patentable or copyrightable, created, made, conceived or reduced to practice by the Executive (alone or jointly with others) or under the Executive’s direction during the Executive’s employment with Employer (whether under this Agreement or any other prior or subsequent employment with Employer). The Executive acknowledges that all work performed by the Executive is on a “work for hire” basis, and the Executive hereby does assign and transfer to Employer, its successors and assigns, all of the Executive’s right, title and interest in all Developments that (i) relate to the business of Employer or any of the products or

4854-9934-2604.3 13 services being researched, developed, manufactured, marketed, provided or sold by Employer or which may be used with such products or services; or (ii) result from tasks assigned or delegated to the Executive by Employer; or (iii) result from the use of premises or personal property (whether tangible or intangible) owned, leased or contracted for by Employer, and all related patents, patent applications, trademarks and trademark applications, copyrights and copyright applications, and other intellectual property rights in all countries and territories worldwide and under any international conventions (“Intellectual Property Rights”). The Executive will fully cooperate with Employer, both during and after the Executive’s employment with Employer, with respect to Employer securing and protecting its Intellectual Property Rights in regard to such Developments. If the Executive wishes to assert or clarify that something created by Executive prior to the Executive’s employment with Employer that relates to Employer’s actual or proposed business is not within the scope of the foregoing assignment, the Executive shall notify Employer thereof in writing contemporaneously with signing this Agreement. Notwithstanding the foregoing, any Developments or Intellectual Property Rights specified on Exhibit A to this Agreement shall be excluded from the requirements of this Section 10 and shall not be assigned to Employer. 12. Arbitration. Except as provided in Section 10, or prohibited by applicable law, disputes arising out of or asserting breach of this Agreement, or any statutory or common law claim by Executive relating to Executive’s employment under this Agreement or the termination thereof (including any tort or discrimination claim), shall be goverened by this Section 12. The party invoking Section 12 (the “Moving Party”) shall provide the other party (the “Non-Moving Party”) with a Notice of Dispute, setting forth the nature of the dispute. The parties agree to make a good faith effort to resolve the dispute prior to arbitration. In the event the dispute is not resolved within ten (10) business days of receipt of the Notice of Dispute by the Non-Moving Party, the parties will attempt to agree on a neutral arbitrator. In the event the parties are not able to reach agreement on a neutral arbitrator within twenty (20) business days of receipt of the Notice of Dispute by the Non-Moving Party, the dispute shall be resolved in accordance with the Employment Arbitration Rules of the American Arbitration Association (“AAA”), provided the Moving Party submits the dispute to the AAA within thirty (30) business days of receipt of the Notice of Dispute by the Non-Moving Party. Such arbitration process shall take place within 100 miles of the Detroit, Michigan metropolitan area. The decision of the arbitrator shall be final, conclusive, and binding on the parties to the arbitration. A court of competent jurisdiction may enter judgment upon the arbitrator’s award. In any arbitration proceeding, the arbitrator shall have the authority to compel adequate discovery for the resolution of the dispute, hear motions, and to award such relief as would otherwise be available under applicable law in a court proceeding. Each party shall pay for his/its own costs and attorneys’ fees, if any. However, if either party prevails on a statutory claim that affords attorneys’ fees to the prevailing party, the arbitrator may award reasonable fees to the prevailing party in accordance with applicable law. BY AGREEING TO THIS ARBITRATION PROCEDURE, EXECUTIVE AND COMPANY AGREE THAT THIS ARBITRATION PROCEDURE SHALL BE THE EXCLUSIVE MEANS OF REDRESS WITH RESPECT TO DISPUTES GOVERENED BY THIS SECTION 12, AND HEREBY WAIVE ANY RIGHTS EITHER MAY HAVE TO TRIAL BY JURY IN REGARD TO ARBITRABLE CLAIMS.

4854-9934-2604.3 14 13. Miscellaneous. a. Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of Michigan, without regard to conflicts of laws principles thereof. b. Entire Agreement/Amendments. Except with respect to the matters contained in the Equity Documents, this Agreement contains the entire understanding of the parties with respect to the employment of Executive by the Employer. There are no restrictions, agreements, promises, warranties, covenants or undertakings between the parties with respect to the subject matter herein other than those expressly set forth herein. This Agreement may not be altered, modified, or amended except by written instrument signed by the parties hereto. c. No Waiver. The failure of a party to insist upon strict adherence to any term of this Agreement on any occasion shall not be considered a waiver of such party’s rights or deprive such party of the right thereafter to insist upon strict adherence to that term or any other term of this Agreement. d. Severability. In the event that any one or more of the provisions of this Agreement shall be or become invalid, illegal or unenforceable in any respect, the validity, legality and enforceability of the remaining provisions of this Agreement shall not be affected thereby. e. Assignment. This Agreement, and all of Executive’s rights and duties hereunder, shall not be assignable or delegable by Executive. Any purported assignment or delegation by Executive in violation of the foregoing shall be null and void ab initio and of no force and effect. This Agreement may be assigned by the Employer to a person or entity that is an affiliate or a successor in interest to substantially all of the business operations of the Employer. Upon such assignment, the rights and obligations of the Employer hereunder shall become the rights and obligations of such affiliate or successor person or entity. f. Set Off; No Mitigation. The Employer’s obligation to pay Executive the amounts provided and to make the arrangements provided hereunder shall be subject to set-off, counterclaim or recoupment of amounts owed by Executive to the Employer or its affiliates; provided, that no such set-off in excess of $5,000 shall be made against any amount payable to Executive pursuant to Sections 7(c)(iii)(2) or (3) hereof (or any other amount that constitutes a payment under a “nonqualified deferred compensation plan” within the meaning of Code Section 409A). Executive shall not be required to mitigate the amount of any payment provided for pursuant to this Agreement by seeking other employment or otherwise and the amount of any payment provided for pursuant to this Agreement shall not be reduced by any compensation earned as a result of Executive’s other employment or otherwise. g. Successors; Binding Agreement. This Agreement shall inure to the benefit of and be binding upon the Company, its subsidiaries and affiliates, and the Executive and any personal or legal representatives, executors, administrators, successors, assigns, heirs, distributees, devisees and legatees. Further, the Company will require any successor (whether,

4854-9934-2604.3 15 direct or indirect, by purchase, merger, consolidation, or otherwise) to all or substantially all of the business and/or assets of the Company to assume expressly and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform it if no such succession had taken place. As used in this Agreement, “Company” shall mean the Company and any successor to its business and/or assets which is required by this Section 13(g) to assume and agree to perform this Agreement or which otherwise assumes and agrees to perform this Agreement; provided, however, in the event that any successor, as described above, agrees to assume this Agreement in accordance with the preceding sentence, as of the date such successor so assumes this Agreement, the Company shall cease to be liable for any of the obligations contained in this Agreement. h. Notice. For the purpose of this Agreement, notices and all other communications provided for in the Agreement shall be in writing and shall be deemed to have been duly given when delivered by hand or overnight courier or three days after it has been mailed by United States registered mail, return receipt requested, postage prepaid, addressed to the respective addresses set forth below in this Agreement, or to such other address as either party may have furnished to the other in writing in accordance herewith, except that notice of change of address shall be effective only upon receipt. If to the Employer: ITC Holdings Corp. 27175 Energy Way Novi, Michigan 48377 Attention: General Counsel With a copy to: Dykema Gossett PLLC Capitol View 201 Townsend Street, Suite 900 Lansing, Michigan 48933 Attention: Richard J. Aaron, Esq. If to Executive: To the most recent address of Executive set forth in the personnel records of the Employer. i. Executive Representation. Executive hereby represents to the Employer that the execution and delivery of this Agreement by Executive and the Employer and the performance by Executive of Executive’s duties hereunder shall not constitute a breach of, or otherwise contravene, the terms of any employment agreement or other agreement or policy to which Executive is a party or otherwise bound. j. Prior Agreements. This Agreement supercedes all prior agreements and understandings (including, without limitation, any verbal agreements, offer letters or summaries of principal terms pertaining to the employment of Executive by the Employer) between

4854-9934-2604.3 16 Executive and the Employer and/or its affiliates regarding the terms and conditions of Executive’s employment with the Employer and/or its affiliates; provided, however, that the Equity Documents shall govern the terms and conditions of Executive’s equity holdings in the Company. k. Cooperation. During and after Executive’s employment, Executive shall provide Executive’s reasonable cooperation in connection with any action or proceeding (or any appeal from any action or proceeding) that relates to events occurring during Executive’s employment hereunder, now in existence or which may arise or be brought in the future against or on behalf of Employer. The Executive’s full cooperation in connection with such claims or actions shall include, but not be limited to, being available to meet with counsel to prepare for discovery or trial and to act as a witness on behalf of Employer at mutually convenient times. Executive shall also cooperate with Employer in connection with any investigation or review of any federal, state or local regulatory authority as any such investigation or review relates to events or occurrences that transpired during Executive’s employment. Employer shall reimburse the Executive at a rate of two hundred dollars and no/100 U.S. Dollars ($200.00) per hour to the extent such cooperation is needed after Executive is no longer employed and reimburse the Executive for any reasonable out-of-pocket expenses incurred in connection with Executive’s performance of obligations under this Section. This provision shall survive any termination of this Agreement. l. Taxes. i. Withholding Taxes. The Employer may withhold from any amounts payable under this Agreement such Federal, state and local taxes as may be required to be withheld pursuant to any applicable law or regulation, with respect to any compensation or benefits payable or provided to Executive by Employer pursuant to this Agreement or any other plan, arrangement or agreement with the Employer. ii. 409A Compliance and Penalties. All payments under this Agreement are intended to be exempt from or in compliance with Code Section 409A, and the provisions of this Agreement are to be construed and administered accordingly. Further, for all purposes under this Agreement: (A) references to “termination” of employment (or variations thereof), shall be synonymous with the meaning given to the term “separation from service” as provided under Code Section 409A, and IRS guidance issued thereunder; (B) no payment, reimbursement or benefit provided to Executive in one calendar year hereunder shall affect the provision of any such payment, reimbursement or benefit in any other calendar year; and (C) the timing of payments and the provision of benefits under this Agreement that are contingent on Executive executing and not revoking the Release as provided in Section 7(f), are intended to satisfy the requirements of IRS Notices 2010-6 and 2010-80 ; and (D) each installment payment provided hereunder is intended to be treated as a separate payment for Code Section 409A purposes. Notwithstanding any other provision of this Agreement (other than Section 13(l)(iii) below), while Executive acknowledges that Employer may take actions hereunder as are required to comply with or to minimize any potential interest charges and/or additional taxes as may be imposed by Code Section 409A (the “409A Penalties”) with respect to any payment or benefit due to Executive under this Agreement (including a delay in payment until the first business day

4854-9934-2604.3 17 following the end of the 409A Period, in the event Executive is a “specified employee” within the meaning of Code Section 409A, as described in and consistent with the provisions of Section 7(c)(iii)), the parties hereby confirm that all such payments and benefits due to Executive will in fact be made or provided (except as provided in Section 13(l)(iii) below) at the earliest time at which it is determined either that no 409A Penalties are applicable, or that such 409A Penalties will apply without exception. Further, if at any time it is determined that any payment or benefit due to Executive under this Agreement may be subject to any 409A Penalties, the Employer shall (D) be permitted to modify the provision of such payment or benefit if such modification would reasonably be expected to eliminate or minimize such 409A Penalties, so long as such modification does not adversely affect, in any material respect, the economic benefit to Executive of such payment or benefit (or otherwise result in additional 409A Penalties), or (E) to the extent that the course of action proposed in clause (D) cannot be effected, within fifteen (15) days after the date of such determination (but no later than the end of the calendar year following the year in which the Executive remits the 409A Penalties involved; or such other earliest date on which such amount can be paid as may be permitted under Code Section 409A) pay to Executive an additional amount equal to such 409A Penalties, along with such additional amount as is required to pay any income and/or payroll taxes due on the 409A Penalties and the additional tax gross-up payment (as determined by the Employer’s independent accountants, assuming that the Executive pays income taxes at the highest applicable marginal rates for the calendar year in which the tax gross-up payment is to be made). iii. Parachute Taxes. In the event that the Executive shall become entitled to payments and/or benefits provided by this Agreement or any other amounts in the “nature of compensation” (whether pursuant to the terms of this Agreement or any other plan, arrangement or agreement with the Employer, any person whose actions result in a change of ownership or effective control covered by Code Section 280G(b)(2) or any person affiliated with any Employer or such person) as a result of such change in ownership or effective control (collectively the “Employer Payments”), and such Employer Payments would be subject to the tax (the “Excise Tax”) imposed by Code Section 4999 (and any similar tax that may hereafter be imposed by any taxing authority), then notwithstanding any other provision of this Agreement or any other plan, arrangement or agreement with the Employer, the Employer shall pay and/or provide to the Executive only that portion of the Employer Payments which are in total equal to one dollar less than the amount of the Employer Payments that would subject the Executive to the Excise Tax. If the Employer Payments must be reduced pursuant to the preceding sentence, Employer Payments shall be reduced in the following order: (A) any amounts payable to the Executive pursuant to Section 7(c)(iii)(2); (B) any other cash amounts payable to the Executive; (C) the value as parachute payments of the acceleration of vesting of any stock options; (D) the value as parachute payments of the acceleration of vesting of any restricted stock; (E) the value as parachute payments of the acceleration of vesting of any equity interest not covered by (C) or (D) above; and (F) the value as parachute payments of any other benefits received. The Employer’s independent accountants, at the Employer’s expense, shall determine whether any of the Employer Payments are “parachute payments” within the meaning of Code Section 280G(b)(2) that would be subject to the Excise Tax, the projected amount of such Excise Tax and any other determinations required in the preceding paragraph. The determination of the accountants shall be final and binding upon the Employer and the Executive; provided, that in the event any initial determination under this subsection is subsequently modified by the

4854-9934-2604.3 18 Employer’s accountants or the IRS, Executive and Employer agree to reasonably cooperate to resolve any matter related thereto. In all cases, Executive shall be solely responsible for timely payment of any Excise Tax finally determined by the IRS to be due and payable with respect to the Employer Payments (as reduced, if applicable). Executive shall also promptly deliver to the Company copies of any written communications, and summaries of any verbal communications, with any taxing authority regarding the Excise Tax covered by this subsection. m. Counterparts. This Agreement may be signed in counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. n. Definition of “Change in Control.” For purposes of this Agreement, “Change in Control” means the occurrence of any of the following events: i. If any one person, or more than one person acting as a group (as defined in Code Section 409A and IRS guidance issued thereunder), acquires ownership of common stock of the Company that, together with stock held by such person or group, constitutes more than fifty (50) percent of the total fair market value or total voting power of the common stock of the Company. However, if any one person or more than one person acting as a group, is considered to own more than fifty (50) percent of the total fair market value or total voting power of the common stock of the Company, the acquisition of additional stock by the same person or persons is not considered to cause a Change in Control, or to cause a change in the effective control of the Company (within the meaning of Code Section 409A and IRS guidance issued thereunder). An increase in the percentage of common stock of the Company owned by any one person, or persons acting as a group, as a result of a transaction in which the Company acquires its stock in exchange for property shall be treated as an acquisition of stock for purposes of this subsection. This paragraph applies only when there is a transfer of stock of the Company (or issuance of stock of the Company) and stock in the Company remains outstanding after the transaction; ii. If any one person, or more than one person acting as a group (as determined in accordance with Code Section 409A and IRS guidance thereunder), acquires (or has acquired during the 12-month period ending on the date of the most recent acquisition by such person or persons) ownership of common stock of the Company possessing thirty-five (35) percent or more of the total voting power of the common stock of the Company; iii. If a majority of members on the Company’s Board is replaced during any 12-month period by directors whose appointment or election is not endorsed by a majority of the members of the Company’s Board prior to the date of the appointment or election (provided that for purposes of this paragraph, the term Company refers solely to the “relevant corporation,” as defined in Code Section 409A and IRS guidance issued thereunder, for which no other corporation is a majority shareholder); or iv. If there is a change in the ownership of a substantial portion of the Company’s assets, which shall occur on the date that any one person, or more than one person acting as a group (within the meaning of Code Section 409A and IRS guidance issued

4854-9934-2604.3 19 thereunder) acquires (or has acquired during the 12-month period ending on the date of the most recent acquisition by such person or persons) assets from the Company that have a total gross fair market value equal to or more than forty (40) percent of the total gross fair market value of all of the assets of the Company immediately prior to such acquisition or acquisitions. For this purpose, gross fair market value means the value of the assets of the Company, or the value of the assets being disposed of, determined without regard to any liabilities associated with such assets. IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement as of this ___ day of _____________, 2022, effective as of February 14, 2022. ITC HOLDINGS CORP.: EXECUTIVE: By:_________________________________ ____________________________________ Brian Slocum Print Name:__________________________ Its: _________________________________

4854-9934-2604.3 A-1 EXHIBIT A LIST OF PRIOR INVENTIONS AND ORIGINAL WORKS OF AUTHORSHIP I have intellectual property rights in the following inventions, original works of authorship, or other work products related to the activities of the ITC Holdings Corp. (the “Company”) that were created prior to my employment by the Company that I do not assign to the Company (if none, please write "None"): (Please note: It is in your interest to establish that any such inventions, expressions of or other work products were made before your employment by the Company. You should not disclose such rights, inventions or work products in detail, but should identify them only by the titles and dates of documents describing them.) Identifying Number Title Date or Brief Description _______ No inventions or improvements _______ Additional Sheets Attached Date: ____________________________________________________________________ Signature of Executive: ______________________________________________________ Executive: Brian Slocum

EXHIBIT 21

EXHIBIT 31.1

CERTIFICATION PURSUANT TO RULE 13A-14(A) OR 15D-14(A), AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Linda H. Apsey, certify that:

1.I have reviewed this annual report on Form 10-K of ITC Holdings Corp.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: February 10, 2022


/s/ Linda H. Apsey
Linda H. Apsey President and Chief Executive Officer

EXHIBIT 31.2

CERTIFICATION PURSUANT TO RULE 13A-14(A) OR 15D-14(A), AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Gretchen L. Holloway, certify that:

1.I have reviewed this annual report on Form 10-K of ITC Holdings Corp.;

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: February 10, 2022


/s/ Gretchen L. Holloway
Gretchen L. Holloway Senior Vice President and Chief Financial Officer

EXHIBIT 32

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of ITC Holdings Corp. (the “Registrant”) on Form 10-K for the period ended December 31, 2021 as filed with the Securities and Exchange Commission on February 10, 2022 (the “Report”), we, Linda H. Apsey, President and Chief Executive Officer of the Registrant, and Gretchen L. Holloway, Senior Vice President and Chief Financial Officer of the Registrant, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Dated: February 10, 2022



/s/ Linda H. Apsey
Linda H. Apsey President and Chief Executive Officer

/s/ Gretchen L. Holloway
Gretchen L. Holloway Senior Vice President and Chief Financial Officer

v3.22.0.1

Document and Entity Information Document - USD ($)
$ in Billions
12 Months Ended

Dec. 31, 2021

Feb. 11, 2022

Document Information [Line Items]

ICFR Auditor Attestation Flag false

Entity Common Stock, Shares Outstanding 224,203,112

Document Type 10-K

Document Annual Report true

Document Period End Date Dec. 31, 2021

Document Transition Report false

Entity File Number 001-32576

Entity Registrant Name ITC HOLDINGS CORP.

Entity Incorporation, State or Country Code MI

Entity Tax Identification Number 32-0058047

Entity Address, Address Line One 27175 Energy Way

Entity Address, City or Town Novi

Entity Address, State or Province MI

Entity Address, Postal Zip Code 48377

City Area Code 248

Local Phone Number 946-3000

Entity Current Reporting Status No

Entity Interactive Data Current Yes

Entity Central Index Key 0001317630

Current Fiscal Year End Date --12-31

Entity Filer Category Non-accelerated Filer

Entity Small Business false

Entity Shell Company false

Document Fiscal Year Focus 2021

Document Fiscal Period Focus FY

Amendment Flag false

Entity Common Stock, Shares Outstanding 224,203,112

Entity Well-known Seasoned Issuer No

Entity Voluntary Filers Yes

Entity Public Float $ 0.0

Entity Emerging Growth Company false

v3.22.0.1

Audit Information
12 Months Ended

Dec. 31, 2021

Auditor [Line Items]

Auditor Location Detroit, Michigan

Auditor Name DELOITTE & TOUCHE LLP

Auditor Firm ID 34

v3.22.0.1

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Current assets

Cash and cash equivalents $ 5 $ 4

Accounts receivable 128 114

Inventory 45 42

Regulatory assets 21 52

Prepaid and other current assets 18 12

Total current assets 217 224

Property, plant and equipment (net of accumulated depreciation and amortization of $2,199 and $2,055, respectively) 9,961 9,327

Other assets

Goodwill 950 950

Intangible assets (net of accumulated amortization of $49 and $46, respectively) 26 29

Regulatory assets 190 212

Other Assets 1,267 1,274

Other assets 101 83

TOTAL ASSETS ^[1] 11,445 10,825

Current liabilities

Accounts payable 127 130

Accrued compensation 72 55

Accrued interest 56 55

Accrued taxes 64 61

Regulatory liabilities 14 14

Refundable deposits and advances for construction 44 37

Debt maturing within one year 654 67

Other current liabilities 16 18

Total current liabilities 1,047 437

Accrued pension and postretirement liabilities 52 59

Deferred Tax Liabilities, Tax Deferred Income 1,161 1,013

Regulatory liabilities 619 612

Refundable deposits 28 65

Other liabilities 55 50

Long-term debt 6,009 6,295

Commitments and contingent liabilities (Notes 5 and 17)

STOCKHOLDER’S EQUITY

Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December 31, 2021 and 2020 892 892

Retained earnings 1,584 1,410

Accumulated other comprehensive loss (2) (8)

Total stockholder’s equity 2,474 2,294

TOTAL LIABILITIES AND STOCKHOLDER’S EQUITY 11,445 10,825

Liabilities 8,971 8,531

ITC Holdings

Current assets

Cash and cash equivalents 3 2

Prepaid and other current assets 3 0

Total current assets 92 19

Other assets

Other assets 112 101

TOTAL ASSETS 6,134 5,830

Current liabilities

Accrued compensation 72 55

Accrued interest 23 23

Other current liabilities 8 8

Total current liabilities 757 153

Accrued pension and postretirement liabilities 52 59

Other liabilities 78 58

Long-term debt 2,773 3,266

STOCKHOLDER’S EQUITY

Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December 31, 2021 and 2020 892 892

Retained earnings 1,584 1,410

Accumulated other comprehensive loss (2) (8)

Total stockholder’s equity 2,474 2,294

TOTAL LIABILITIES AND STOCKHOLDER’S EQUITY 6,134 5,830

Liabilities $ 3,660 $ 3,536

[1] Reconciliation of total assets results primarily from differences in the netting of deferred tax assets and liabilities in our segments as compared to the classification in our consolidated statements of financial position.

v3.22.0.1

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parentheticals) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Property, plant and equipment, accumulated depreciation and amortization $ 2,199 $ 2,055

Intangible assets, accumulated amortization $ 49 $ 46

Common stock, without par value $ 0 $ 0

Common stock, shares authorized 235,000,000 235,000,000

Common stock, shares issued 224,203,112 224,203,112

Common stock, shares outstanding 224,203,112 224,203,112

v3.22.0.1

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

OPERATING REVENUES

Transmission and other services $ 1,358 $ 1,290 $ 1,286

Formula rate true-up (9) 8 41

OPERATING REVENUES 1,349 1,298 1,327

OPERATING EXPENSES

Operation and maintenance 108 87 113

General and administrative 128 115 138

Depreciation and amortization 232 219 203

Taxes other than income taxes 133 124 118

Other operating (income) and expense, net (1) 0 0

Total operating expenses 600 545 572

OPERATING INCOME 749 753 755

OTHER EXPENSES (INCOME)

Interest expense, net 251 240 224

Allowance for equity funds used during construction (30) (27) (29)

Other (income) and expenses, net (5) (3) 0

Total other expenses (income) 216 210 195

INCOME BEFORE INCOME TAXES 533 543 560

INCOME TAX PROVISION 127 136 132

NET INCOME 406 407 428

Derivative instruments, net of tax 6 (15) 3

TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX 6 (15) 3

TOTAL COMPREHENSIVE INCOME $ 412 $ 392 $ 431

v3.22.0.1

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY - USD ($)
$ in Millions

Total

Common Stock

Retained Earnings

Accumulated Other Comprehensive Income (Loss)

Stockholder's equity at Dec. 31, 2018 $ 2,051 $ 892 $ 1,155 $ 4

NET INCOME 428 428

Dividends to ITC Investment Holdings (250) (250)

TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX 3 3

Stockholder's equity at Dec. 31, 2019 2,232 892 1,333 7

NET INCOME 407 407

Dividends to ITC Investment Holdings (330) (330)

TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX (15) (15)

Stockholder's equity at Dec. 31, 2020 2,294 892 1,410 (8)

NET INCOME 406 406

Dividends to ITC Investment Holdings (232) (232)

TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX 6 6

Stockholder's equity at Dec. 31, 2021 $ 2,474 $ 892 $ 1,584 $ (2)

v3.22.0.1

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Statement of Cash Flows [Abstract]

Employee Benefits and Share-based Compensation $ 34 $ 25 $ 32

CASH FLOWS FROM OPERATING ACTIVITIES

NET INCOME 406 407 428

Adjustments to reconcile net income to net cash provided by operating activities:

Depreciation and amortization expense 232 219 203

Recognition, refund and collection of revenue accruals and deferrals — including accrued interest 52 (47) (55)

Deferred income tax expense 127 138 135

Allowance for equity funds used during construction (30) (27) (29)

Other 6 4 10

Changes in assets and liabilities, exclusive of changes shown separately:

Accounts receivable (18) 0 (10)

Accounts payable (3) 4 (11)

Accrued interest 1 7 (2)

Increase (Decrease) in Accrued Salaries (3) (14) 10

Accrued taxes 3 (3) 3

Net refund settlements and adjustments related to return on equity complaints (5) (65) (82)

Other current and non-current assets and liabilities, net (17) (16) (3)

Net cash provided by operating activities 785 632 629

CASH FLOWS FROM INVESTING ACTIVITIES

Expenditures for property, plant and equipment (834) (885) (865)

Contributions in aid of construction 15 2 10

Other (5) 5 1

Net cash used in investing activities (824) (878) (854)

CASH FLOWS FROM FINANCING ACTIVITIES

Issuance of long-term debt 75 1,030 175

Borrowings under revolving credit agreements 1,175 1,495 1,090

Borrowings under term loan credit agreements 0 275 200

Net issuance (repayment) of commercial paper 88 (133) 200

Retirement of long-term debt — including extinguishment of debt costs 0 (35) (203)

Repayments of revolving credit agreements (1,044) (1,596) (999)

Repayments of term loan credit agreements 0 (475) 0

Dividends to ITC Investment Holdings (232) (330) (250)

Refundable deposits from generators for transmission network upgrades 18 60 19

Repayment of refundable deposits from generators for transmission network upgrades (39) (10) (8)

Other (1) (12) (3)

Net cash provided by financing activities 40 246 221

NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 1 0 (4)

CASH, CASH EQUIVALENTS AND RESTRICTED CASH — Beginning of period 6 6 10

CASH, CASH EQUIVALENTS AND RESTRICTED CASH — End of period 7 6 6

Interest Rate Swap [Member]

Payments for (Proceeds from) Hedge, Financing Activities $ 0 $ (23) $ 0

v3.22.0.1

GENERAL
12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

GENERAL GENERAL
ITC Holdings and its subsidiaries are engaged in the transmission of electricity in the United States. ITC Holdings is a wholly-owned subsidiary of ITC Investment Holdings. Fortis owns a majority indirect equity interest in ITC Investment Holdings, with GIC holding an indirect, passive, non-voting equity interest of 19.9%. Through our Regulated Operating Subsidiaries, we own, operate, maintain and invest in high-voltage electric transmission systems in Michigan’s Lower Peninsula and portions of Iowa, Minnesota, Illinois, Missouri, Kansas, and Oklahoma that transmit electricity from generating stations to local distribution facilities connected to our transmission systems.
Our Regulated Operating Subsidiaries are independent electric transmission utilities, with cost-based rates regulated by the FERC. ITCTransmission’s service area is located in southeastern Michigan, while METC’s service area covers approximately two-thirds of Michigan’s Lower Peninsula and is contiguous with ITCTransmission’s service area. ITC Midwest’s service area is located in portions of Iowa, Minnesota, Illinois and Missouri and ITC Great Plains currently owns assets located in Kansas and Oklahoma. MISO bills and collects revenues from the MISO Regulated Operating Subsidiaries’ customers. SPP bills and collects revenue from ITC Great Plains’ customers. ITC Interconnection currently owns assets in Michigan and earns revenues based on its facilities reimbursement agreement with a merchant generating company.
Recent Developments Regarding the COVID-19 Pandemic
In March 2020, the World Health Organization declared COVID-19 a pandemic. Efforts to control the outbreak of COVID-19 have resulted in challenges to businesses and facilities in various industries around the world, including our customers, and disruptions to the global economy and supply chains. To date, COVID-19 has not had a material impact on our net income. However, for 2020, we utilized various temporary cost saving measures related to operating expenses, including operation and maintenance expenses and general and administrative expenses, in an attempt to reduce costs for our customers that were collected through our Formula Rates.
We are unable to predict the ultimate effects of COVID-19 on the U.S. or global economy or our operations. We continue to monitor developments affecting our workforce, customers, suppliers, and operations. The extent of the impact of COVID-19 will depend on its duration, actions by government authorities, and impacts on our customers, employees, or vendors. These developments are continuously evolving, and we cannot predict whether COVID-19 will have a material impact on our financial condition, results of operations or cash flows.

v3.22.0.1

SUPPLEMENTAL FINANCIAL INFORMATION
12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Elements [Abstract]

SUPPLEMENTAL FINANCIAL INFORMATION SUPPLEMENTAL FINANCIAL INFORMATION
Reconciliation of Cash, Cash Equivalents and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the consolidated statements of financial position that sum to the total of the same such amounts shown in the consolidated statements of cash flows:
December 31,
(In millions of USD) 2021 2020 2019 2018
Cash and cash equivalents $ 5 $ 4 $ 4 $ 6
Restricted cash included in:
Other non-current assets 2 2 2 4
Total cash, cash equivalents and restricted cash $ 7 $ 6 $ 6 $ 10
Restricted cash included in other non-current assets primarily represents cash on deposit to pay for vegetation management, land easements and land purchases for the purpose of transmission line construction as well as amounts liquidated to make benefit payments related to our supplemental benefit plans.
Supplementary Cash Flow Information
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Supplementary cash flows information:
Interest paid (net of interest capitalized) $ 237 $ 236 $ 228
Income taxes paid — 2 —
Income tax refunds received — 2 3
Supplementary non-cash investing and financing activities:
Additions to property, plant and equipment and other long-lived assets (a) 140 135 92
Allowance for equity funds used during construction 30 27 29
Right-of-use assets obtained in exchange for new operating lease liabilities — — 5
Other 3 — —
____________________________
(a)Amounts consist of current and accrued liabilities for construction, labor, materials and other costs that have not been included in investing activities. These amounts have not been paid for as of December 31, 2021, 2020 or 2019, respectively, but will be or have been included as a cash outflow from investing activities for expenditures for property, plant and equipment or repayments of contributions in aid of construction when paid.

v3.22.0.1

SUPPLEMENTAL FIANNCIAL INFORMATION
12 Months Ended

Dec. 31, 2021

Supplemental Cash Flow Elements [Abstract]

Restrictions on Cash and Cash Equivalents
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the consolidated statements of financial position that sum to the total of the same such amounts shown in the consolidated statements of cash flows:
December 31,
(In millions of USD) 2021 2020 2019 2018
Cash and cash equivalents $ 5 $ 4 $ 4 $ 6
Restricted cash included in:
Other non-current assets 2 2 2 4
Total cash, cash equivalents and restricted cash $ 7 $ 6 $ 6 $ 10
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the condensed statements of financial position that sum to the total of the same such amounts shown in the condensed statements of cash flows:
December 31,
(In millions of USD) 2021 2020 2019 2018
Cash and cash equivalents $ 3 $ 2 $ 2 $ 3
Restricted cash included in:
Other non-current assets — — — 1
Total cash, cash equivalents and restricted cash $ 3 $ 2 $ 2 $ 4

Supplementary Cash Flow Information
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Supplementary cash flows information:
Interest paid (net of interest capitalized) $ 237 $ 236 $ 228
Income taxes paid — 2 —
Income tax refunds received — 2 3
Supplementary non-cash investing and financing activities:
Additions to property, plant and equipment and other long-lived assets (a) 140 135 92
Allowance for equity funds used during construction 30 27 29
Right-of-use assets obtained in exchange for new operating lease liabilities — — 5
Other 3 — —
____________________________
(a)Amounts consist of current and accrued liabilities for construction, labor, materials and other costs that have not been included in investing activities. These amounts have not been paid for as of December 31, 2021, 2020 or 2019, respectively, but will be or have been included as a cash outflow from investing activities for expenditures for property, plant and equipment or repayments of contributions in aid of construction when paid.
Supplementary Cash Flows Information
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Supplementary cash flows information:
Interest paid $ 119 $ 116 $ 117
Income taxes paid — 2 —
Income tax refunds received — 2 3
^[1]

[1] Amounts consist of current and accrued liabilities for construction, labor, materials and other costs that have not been included in investing activities. These amounts have not been paid for as of December 31, 2021, 2020 or 2019, respectively, but will be or have been included as a cash outflow from investing activities for expenditures for property, plant and equipment or repayments of contributions in aid of construction when paid.

v3.22.0.1

SUPPLEMENTAL FIANNCIAL INFORMATION Restricted Cash Reconciliation - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Supplemental Cash Flow Elements [Abstract]

Cash and cash equivalents $ 5 $ 4 $ 4 $ 6

Restricted Cash, included in other non-current assets 2 2 2 4

Total cash, cash equivalents and restricted cash $ 7 $ 6 $ 6 $ 10

v3.22.0.1

SUPPLEMENTAL FINANCIAL INFORMATION Supplemental Cash Flow Information - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Public Utilities, General Disclosures [Line Items]

Interest paid $ 237 $ 236 $ 228

Income Taxes Paid 0 2 0

Income tax refunds received 0 2 3

Additions to property, plant and equipment and other long-lived assets 140 135 92

Allowance for funds used during construction 30 27 29

Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 0 0 5

Noncash or Part Noncash Acquisition, Other Liabilities Assumed $ 3 $ 0 $ 0

v3.22.0.1

RECENT ACCOUNTING PRONOUNCEMENTS
12 Months Ended

Dec. 31, 2021

Accounting Standards Update and Change in Accounting Principle [Abstract]

RECENT ACCOUNTING PRONOUNCEMENTS RECENT ACCOUNTING PRONOUNCEMENTS
Recently Adopted Pronouncements
Accounting for Cloud Computing Arrangements
In August 2018, the FASB issued authoritative guidance to address the accounting for implementation costs incurred in a cloud computing agreement that is a service contract. The new standard aligns the accounting for implementation costs incurred in a cloud computing arrangement as a service contract with existing guidance on capitalizing costs associated with developing or obtaining internal-use software. In addition, the new guidance requires entities to expense capitalized implementation costs of a cloud computing arrangement that is a service contract over the term of the agreement and to present the expense in the same income statement line item as the hosting fees. The guidance was effective for fiscal years beginning after December 15, 2019 with either prospective or retrospective adoption permitted. We adopted the standard prospectively on January 1, 2020. Adoption of this standard did not have a material impact on our consolidated financial statements.

v3.22.0.1

SIGNIFICANT ACCOUNTING POLICIES
12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

SIGNIFICANT ACCOUNTING POLICIES SIGNIFICANT ACCOUNTING POLICIES
A summary of the major accounting policies followed in the preparation of the accompanying consolidated financial statements, which conform to GAAP, is presented below:
Principles of Consolidation — ITC Holdings consolidates its majority owned subsidiaries. We eliminate all intercompany balances and transactions.
Use of Estimates — The preparation of the consolidated financial statements requires us to use estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from our estimates.
Regulation — Our Regulated Operating Subsidiaries are subject to the regulatory jurisdiction of the FERC, which issues orders pertaining to rates, recovery of certain costs, including the costs of transmission assets and regulatory assets, conditions of service, accounting, financing authorization and operating-related matters. The utility operations of our Regulated Operating Subsidiaries meet the accounting standards set forth by the FASB for the accounting effects of certain types of regulation. These accounting standards recognize the cost-based rate setting process, which results in differences in the application of GAAP between regulated and non-regulated businesses. These standards require the recording of regulatory assets and liabilities for certain transactions that would have been recorded as revenue and expense in non-regulated businesses. Regulatory assets represent costs that will be
included as a component of future tariff rates and regulatory liabilities represent amounts provided in the current tariff rates that are intended to recover costs expected to be incurred in the future or amounts to be refunded to customers.
Cash and Cash Equivalents — We consider all unrestricted highly-liquid temporary investments with an original maturity of three months or less at the date of purchase to be cash equivalents.
Restricted Cash and Restricted Cash Equivalents — Restricted cash and restricted cash equivalents include cash and cash equivalents that are legally or contractually restricted for use or withdrawal or are formally set aside for a specific purpose.
Accounts Receivable Reserve — We recognize losses for uncollectible accounts based on the current expected credit loss model. As of December 31, 2021, 2020 and 2019 we did not have an accounts receivable reserve.
Inventories — Materials and supplies inventories are valued at average cost. Additionally, the costs of warehousing activities are recorded here and included in the cost of materials when requisitioned.
Property, Plant and Equipment — Depreciation and amortization expense on property, plant and equipment was $223 million, $209 million and $194 million for 2021, 2020 and 2019, respectively.
Property, plant and equipment in service at our Regulated Operating Subsidiaries is stated at its original cost when first devoted to utility service. The gross book value of assets retired less salvage proceeds is charged to accumulated depreciation. The provision for depreciation of transmission assets is a significant component of our Regulated Operating Subsidiaries’ cost of service under FERC-approved rates. Periodically we perform depreciation studies of the assets at our Regulated Operating Subsidiaries. The results of these studies are submitted to, and require approval from the FERC prior to changing our depreciation rates. Depreciation is computed over the estimated useful lives of the assets using the straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes. The composite depreciation rate for our Regulated Operating Subsidiaries included in our consolidated statements of comprehensive income was 2.0% for 2021, 2020 and 2019. The composite depreciation rates include depreciation primarily on transmission station equipment, towers, poles and overhead and underground lines that have a useful life ranging from 45 to 60 years. The portion of depreciation expense related to asset removal costs is added to regulatory liabilities or deducted from regulatory assets and removal costs incurred are deducted from regulatory liabilities or added to regulatory assets. Certain of our Regulated Operating Subsidiaries capitalize to property, plant and equipment AFUDC in accordance with FERC regulations. AFUDC represents the composite cost incurred to fund the construction of assets, including interest expense and a return on equity capital devoted to construction of assets. The interest component of AFUDC was a reduction to interest expense of $8 million, $7 million and $8 million for 2021, 2020 and 2019, respectively.
For acquisitions of property, plant and equipment greater than the net book value (other than asset acquisitions accounted for under the purchase method of accounting that result in goodwill), the acquisition premium is recorded to property, plant and equipment and amortized over the estimated remaining useful lives of the assets using the straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes.
Property, plant and equipment includes capital equipment inventory stated at original cost consisting of items that are expected to be used exclusively for capital projects.
Property, plant and equipment at our non-regulated subsidiaries is stated at its acquired cost. Proceeds from salvage less the net book value of the disposed assets is recognized as a gain or loss on disposal. Depreciation is computed based on the acquired cost less expected residual value and is recognized over the estimated useful lives of the assets on a straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes.
Generator Interconnection Projects and Contributions in Aid of Construction — Certain capital investment at our Regulated Operating Subsidiaries relates to investments made under GIAs. The GIAs typically consist of both transmission network upgrades, which are a category of upgrades deemed by the FERC to benefit the transmission system as a whole, as well as direct connection facilities, which are necessary to interconnect the generating facility to the transmission system and primarily benefit the
generating facility. As a result, GIAs typically require the generator to make a contribution in aid of construction to our Regulated Operating Subsidiaries to cover the cost of certain investments made by us as part of the agreement.
Our investments in transmission facilities are recorded to property, plant and equipment, and are recorded net of any contribution in aid of construction. We also receive refundable deposits from the generator for certain investment in network upgrade facilities in advance of construction, which are recorded to current or non-current liabilities depending on the expected refund date.
Jointly Owned Utility Plant/Coordinated Services — Certain of our Regulated Operating Subsidiaries have agreements with other utilities for the joint ownership of substation assets and transmission lines as described in Note 15. We account for these jointly owned assets by recording property, plant and equipment for the percentage of our undivided ownership interest. Various agreements provide the authority for construction of capital improvements and the operating costs associated with the substations and lines. Generally, each party is responsible for the capital, operation and maintenance and other costs of these jointly owned facilities based upon each participant’s undivided ownership interest, and each participant is responsible for providing its own financing. Our participating share of expenses associated with these jointly held assets are primarily recorded within operation and maintenance expenses on our consolidated statements of comprehensive income.
Fair Value Through Net Income — We have certain investments in mutual funds, including fixed income securities and equity securities that are classified as fair value through net income. The fixed income security investments primarily fund our two supplemental nonqualified, noncontributory, retirement benefit plans for selected management employees as described in Note 11. Gains and losses associated with our mutual funds as described in Note 12 are recorded in earnings.
Impairment of Long-Lived Assets — Other than goodwill, our long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. If the carrying amount of the asset exceeds the expected undiscounted future cash flows generated by the asset, the asset is written down to its estimated fair value and an impairment loss is recognized in our consolidated statements of comprehensive income.
Goodwill and Other Intangible Assets — Goodwill is not subject to amortization; however, goodwill is required to be assessed for impairment, and a resulting write-down, if any, is to be reflected in operating expense. We have goodwill recorded relating to our acquisitions of ITCTransmission and METC, and ITC Midwest’s acquisition of the IP&L transmission assets. Goodwill is reviewed at the reporting unit level at least annually for impairment and whenever facts or circumstances indicate that the value of goodwill may be impaired. Our reporting units are ITCTransmission, METC and ITC Midwest as each entity represents an individual operating segment to which goodwill has been assigned. At December 31, 2021 and 2020, we had goodwill balances recorded at ITCTransmission, METC and ITC Midwest of $173 million, $454 million and $323 million, respectively.
In order to perform an impairment analysis, we have the option of performing a qualitative assessment to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, in which case no further testing is required. If an entity bypasses the qualitative assessment or performs a qualitative assessment but determines that it is more likely than not that a reporting unit’s fair value is less than its carrying amount, a quantitative, fair value-based test is performed to assess and measure goodwill impairment, if any. If a quantitative assessment is performed, we determine the fair value of our reporting units using valuation techniques based on discounted future cash flows under various scenarios and consider estimates of market-based valuation multiples for companies within the peer group of our reporting units.
We completed our annual goodwill impairment test for our reporting units as of October 1, 2021 and determined that no impairment exists. There were no events subsequent to October 1, 2021 that indicated impairment of our goodwill. Our intangible assets other than goodwill have finite lives and are amortized over their useful lives. Refer to Note 8 for additional discussion on our intangible assets.
Deferred Financing Fees and Discount or Premium on Debt — Costs related to the issuance of long-term debt are generally recorded as a direct deduction from the carrying amount of the related debt and
amortized over the life of the debt. Debt issuance costs incurred prior to the associated debt funding are presented as an asset. Unamortized debt issuance costs associated with the revolving credit agreements, commercial paper and other similar arrangements are presented as an asset (regardless of whether there are any amounts outstanding under those credit facilities) and amortized over the life of the particular arrangement. The debt discount or premium related to the issuance of long-term debt is recorded to long-term debt and amortized over the life of the debt. We recorded $5 million during the years ended December 31, 2021, 2020 and 2019 to interest expense for the amortization of deferred financing fees and debt discounts.
Asset Retirement Obligations — A conditional asset retirement obligation is a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within our control. We have identified conditional asset retirement obligations primarily associated with the removal of equipment containing PCBs and asbestos. We record a liability at fair value for a legal asset retirement obligation in the period in which it is incurred. When a new legal obligation is recorded, we capitalize the costs of the liability by increasing the carrying amount of the related long-lived asset. We accrete the liability to its present value each period and depreciate the capitalized cost over the useful life of the related asset. At the end of the asset’s useful life, we settle the obligation for its recorded amount. We recognize regulatory assets for the timing differences between the incurred costs to settle our legal asset retirement obligations and the recognition of such obligations as applicable for our Regulated Operating Subsidiaries. Our asset retirement obligations as of December 31, 2021 and 2020 of $6 million are included in other liabilities.
Derivatives and Hedging — We may use derivative financial instruments, including interest rate swap contracts, to manage our exposure to fluctuations in interest rates. For derivative instruments that have been designated and qualify as cash flow hedges of the exposure to variability in expected future cash flows, the unrealized gain or loss on the derivative is initially reported, net of tax, as a component of other comprehensive income (loss) and reclassified to the consolidated statements of comprehensive income when the underlying hedged transaction affects net income. Cash flows related to interest rate swaps that are designated in hedging relationships are generally classified on the consolidated statements of cash flows within cash flows from financing activities. The fair values of derivatives are recognized as current or long-term assets and liabilities depending on the timing of settlements and resulting cash flows. Refer to Note 9 for additional discussion regarding derivative instruments.
Contingent Obligations — We are subject to a number of federal and state laws and regulations, as well as other factors and conditions that potentially subject us to environmental, litigation, income tax and other contingencies. We periodically evaluate our exposure to such contingencies and record liabilities for those matters where a loss is considered probable and reasonably estimable. We reverse the liabilities recorded for those matters when a loss is no longer considered probable or the liabilities are otherwise settled. Our liabilities exclude any estimates for legal costs not yet incurred associated with handling these matters, which could be material. The adequacy of liabilities recorded can be significantly affected by external events or conditions that can be unpredictable; thus, the ultimate outcome of such matters could materially affect our consolidated financial statements.
Revenues — Substantially all of our revenue from contracts with customers is generated from providing transmission services to customers based on tariff rates, as approved by the FERC. Revenues from the transmission of electricity are recognized as services are provided based on our FERC-approved cost-based Formula Rates. We record a reserve for revenue subject to refund when such refund is probable and can be reasonably estimated. This reserve is recorded as a reduction to operating revenues.
The cost-based Formula Rates at our Regulated Operating Subsidiaries include a true-up mechanism that compares the actual revenue requirements of our Regulated Operating Subsidiaries to their billed revenues for each year to determine any over- or under-collection of revenue requirements and we record a revenue deferral or accrual for the difference. The true-up mechanisms under our Formula Rates are considered alternative revenue programs of rate-regulated utilities. Operating revenues arising from these alternative revenue programs are presented on our consolidated statements of comprehensive income in the line “Formula Rate true-up”, which is separate from the reporting of our tariff revenues, which are presented in the line “Transmission and other services.” Only the initial origination of our alternative
revenue program revenue is reported in the Formula Rate true-up line on our consolidated statements of comprehensive income. When those amounts are subsequently included in the price of utility service and billed or refunded to customers, we account for that event as the recovery or settlement of the associated regulatory asset or regulatory liability, respectively. Refer to Note 5 under “Cost-Based Formula Rates with True-Up Mechanism” and Note 3 under “Formula Rate True-Up” for a discussion of our revenue accounting under our cost-based Formula Rates.
Share-Based Payment and Employee Share Purchase Plan — Under our long-term incentive plans, we grant long-term incentive awards consisting of PBUs and SBUs. Generally, each PBU and SBU granted is valued based on one share of Fortis common stock traded on the Toronto Stock Exchange, converted to U.S. dollars and settled only in cash. However, certain SBUs granted to the executives may settle in cash, 100% Fortis common stock, or 50% cash and 50% Fortis common stock depending on executives’ settlement elections and whether certain share ownership requirements are met. The awards are classified as liability awards and vest on the date specified in the applicable grant agreements, provided the service and performance criteria, as applicable, are satisfied. The PBUs and SBUs earn dividend equivalents which are also re-measured and settled consistent with the target award at the end of the vesting period.
Compensation cost is recognized over the expected vesting period and remeasured each reporting period based on Fortis’ stock price. The PBUs are also remeasured each reporting period based on the applicable market and performance conditions in the awards. Compensation cost is adjusted for forfeitures in the period in which they occur and the final measure of compensation cost for the awards is based on the cash settlement amount.
Refer to Note 14 for additional discussion of the plans.
Comprehensive Income (Loss) — Comprehensive income (loss) is the change in stockholder’s equity during a period arising from transactions and events from non-owner sources, including net income and any gain or loss arising from our interest rate swaps.
Income Taxes — Deferred income taxes are recognized for the expected future tax consequences of events that have been recognized in the consolidated financial statements or tax returns. Deferred income tax assets and liabilities are determined based on the differences between the financial statements and the tax bases of various assets and liabilities, using the tax rates expected to be in effect for the year in which the differences are expected to reverse, and classified as non-current in our consolidated statements of financial position.
The accounting standards for uncertainty in income taxes prescribe a recognition threshold and a measurement attribute for tax positions taken, or expected to be taken, in a tax return that may not be sustainable. As of December 31, 2021, we have not recognized any uncertain income tax positions.
We file our federal and Michigan income tax returns as part of the FortisUS consolidated tax returns and we are a party to an intercompany tax sharing agreement that establishes the method for determining tax liabilities that are due and allocating tax attributes that are utilized on the consolidated income tax returns. We continue to file with various other state and city jurisdictions where we have a separate return filing obligation. Our prior consolidated federal tax returns are no longer subject to U.S. federal tax examinations for tax years 2017 and earlier. State and city jurisdictions that remain subject to examination range from tax years 2017 to 2020. In the event we are assessed interest or penalties by any income tax jurisdictions, interest and penalties would be recorded as interest expense and other expense, respectively, in our consolidated statements of comprehensive income. Refer to Notes 6 and 10 for additional discussion on income taxes.

v3.22.0.1

REVENUE
12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer REVENUE Our total revenues are comprised of revenues which arise from three classifications including transmission services, other services, and Formula Rate true-up. As other services revenue is immaterial, it is presented in combination with transmission services on the consolidated statements of comprehensive income.
Transmission Services
Through our Regulated Operating Subsidiaries, we generate nearly all our revenue from providing electric transmission services over our transmission systems. As independent transmission companies, our transmission services are provided and revenues are received based on our tariffs, as approved by the FERC. The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items.
We recognize revenue for transmission services over time as transmission services are provided to customers (generally using an output measure of progress based on transmission load delivered). Customers simultaneously receive and consume the benefits provided by the Regulated Operating Subsidiaries’ services. We recognize revenue in the amount to which we have the right to invoice because we have a right to consideration in an amount that corresponds directly with the value to the customer of performance completed to date. As billing agents, MISO and SPP independently bill our customers on a monthly basis and collects fees for the use of our transmission systems. No component of the transaction price is allocated to unsatisfied performance obligations.
Transmission service revenue includes an estimate for unbilled revenues from service that has been provided but not billed by the end of an accounting period. Unbilled revenues are dependent upon a number of factors that require management’s judgment including estimates of transmission network load (for the MISO Regulated Operating Subsidiaries) and preliminary information provided by billing agents. Due to the seasonal fluctuations of actual load, the unbilled revenue amount generally increases during the spring and summer and decreases during the fall and winter. See Note 4 for information on changes in unbilled accounts receivable.
Other Services
Other services revenue consists of rental revenues, easement revenues, and amounts from providing ancillary services. A portion of other services revenue is treated as a revenue credit and reduces gross revenue requirement when calculating net revenue requirement under our Formula Rates. Total other services revenue was $6 million, $5 million and $7 million for the years ended December 31, 2021, 2020 and 2019, respectively.
Formula Rate True-Up
The true-up mechanism under our Formula Rates is considered an alternative revenue program of a rate-regulated utility given it permits our Regulated Operating Subsidiaries to adjust future rates in response to past activities or completed events in order to collect our actual revenue requirements under our Formula Rates. In accordance with our accounting policy, only the current year origination of the true-up is reported as a Formula Rate true-up. See “Cost-Based Formula Rates with True-Up Mechanism” in Note 5 for more information on our Formula Rates.

v3.22.0.1

ACCOUNTS RECEIVABLE
12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

ACCOUNTS RECEIVABLE ACCOUNTS RECEIVABLE
The following table presents the components of accounts receivable on the consolidated statements of financial position:
December 31,
(In millions of USD) 2021 2020 2019 2018
Trade accounts receivable $ 3 $ 2 $ 2 $ 2
Unbilled accounts receivable 116 102 102 92
Other 9 10 13 8
Total accounts receivable $ 128 $ 114 $ 117 $ 102

v3.22.0.1

REGULATORY MATTERS
12 Months Ended

Dec. 31, 2021

Regulated Operations [Abstract]

REGULATORY MATTERS REGULATORY MATTERS
Cost-Based Formula Rates with True-Up Mechanism
The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items. The formula used to derive the rates does not require further action or FERC filings each year, although the formula inputs remain subject to legal challenge at the FERC. Our Regulated Operating Subsidiaries will continue to use the formula to calculate their respective annual revenue requirements unless the FERC determines the resulting rates to be unjust and unreasonable and another mechanism is determined by the FERC to be just and reasonable. See “Rate of Return on Equity Complaints” in Note 17 for detail on ROE matters for our MISO Regulated Operating Subsidiaries and "Incentive Adders for Transmission Rates" discussed herein.
The cost-based Formula Rates at our Regulated Operating Subsidiaries include a true-up mechanism that compares the actual revenue requirements of our Regulated Operating Subsidiaries to their billed revenues for each year to determine any over- or under-collection of revenue requirements. Revenue is recognized for services provided during each reporting period based on actual revenue requirements calculated using the formula. Our Regulated Operating Subsidiaries accrue or defer revenues to the extent that the actual revenue requirement for the reporting period is higher or lower, respectively, than the amounts billed relating to that reporting period. The amount of accrued or deferred revenues is reflected in future revenue requirements and thus flows through to customer bills within two years under the provisions of our Formula Rates.
The net changes in regulatory assets and liabilities associated with our Regulated Operating Subsidiaries’ Formula Rate revenue accruals and deferrals, including accrued interest, were as follows during the year ended December 31, 2021:
(In millions of USD) Total
Net regulatory assets as of December 31, 2020 $ 50
Net collection of 2019 revenue deferrals and accruals, including accrued interest (43)
Net revenue deferral for the year ended December 31, 2021 (9)
Net regulatory liabilities as of December 31, 2021 $ (2)
Regulatory assets and liabilities associated with our Regulated Operating Subsidiaries’ Formula Rate revenue accruals and deferrals, including accrued interest, are recorded in the consolidated statements of financial position as follows:
December 31,
(In millions of USD) 2021 2020
Current regulatory assets $ 20 $ 44
Non-current regulatory assets 10 19
Current regulatory liabilities (13) (1)
Non-current regulatory liabilities (19) (12)
Net regulatory (liabilities) assets $ (2) $ 50
Incentive Adders for Transmission Rates
The FERC has authorized the use of ROE incentives, or adders, that can be applied to the rates of TOs when certain conditions are met. Our MISO Regulated Operating Subsidiaries and ITC Great Plains utilize ROE adders related to independent transmission ownership and RTO participation. On March 20, 2020, the FERC issued a NOPR and on April 15, 2021, the FERC issued a supplemental NOPR that was a proposal to update the transmission incentives policy. As of December 31, 2021, no final determination had been made on these NOPRs and we cannot predict whether this will have a material impact on us.
MISO Regulated Operating Subsidiaries
On April 20, 2018, Consumers Energy, IP&L, Midwest Municipal Transmission Group, Missouri River Energy Services, Southern Minnesota Municipal Power Agency and WPPI Energy filed a complaint with the FERC under section 206 of the FPA, challenging the adders for independent transmission ownership that are included in transmission rates charged by the MISO Regulated Operating Subsidiaries. At the time of the complaint, the adders for independent transmission ownership allowed up to 50 basis points or 100 basis points to be added to the MISO Regulated Operating Subsidiaries’ authorized ROE, subject to any ROE cap established by the FERC. On October 18, 2018, the FERC issued an order granting the complaint in part, setting revised adders for independent transmission ownership for each of the MISO Regulated Operating Subsidiaries to 25 basis points, and requiring the MISO Regulated Operating Subsidiaries to include the revised adders, effective April 20, 2018, in their Formula Rates. On September 11, 2019, the MISO Regulated Operating Subsidiaries filed an appeal of the FERC’s order in the D.C. Circuit Court and on February 19, 2021, the appeal was denied. As a result, the FERC’s October 18, 2018 order was upheld without further impact on our financial condition, consolidated results of operations or cash flows.
For each of the years ended December 31, 2021, 2020 and 2019, the authorized incentive adders for the MISO Regulated Operating Subsidiaries included a 25 basis point adder for independent transmission ownership and a 50 basis point adder for RTO participation. See Note 17 for information regarding the MISO ROE Complaints and the associated impact to the base ROE of our MISO Regulated Operating Subsidiaries.
ITC Great Plains
On June 11, 2019, KCC filed a complaint with the FERC under section 206 of the FPA, challenging the adder for independent transmission ownership that is included in the transmission rate charged by ITC Great Plains. The adder for independent transmission ownership allowed up to 100 basis points to be added to the ITC Great Plains authorized ROE, subject to any ROE cap established by the FERC. On July 16, 2020, the FERC issued an order granting the complaint, setting the revised adder for independent transmission ownership for ITC Great Plains to 25 basis points, and requiring ITC Great Plains to include the revised adder, effective June 11, 2019, in their Formula Rate. In addition, the order directed ITC Great Plains to provide refunds, with interest, for the period from June 11, 2019 through July 16, 2020. During the fourth quarter of 2020, refunds of $4 million were made to settle the refund liability. ITC Great Plains filed appeals in the D.C. Circuit Court for the various FERC orders in the proceedings for ITC Great Plains. On March 4, 2021, these appeals were dismissed following a motion for voluntary dismissal by ITC Great Plains in response to the denial of the appeal of the FERC’s order to reduce the adder for independent transmission ownership for each of the MISO Regulated Operating Subsidiaries. The dismissal of the appeals did not result in additional impacts to our consolidated results of operations, cash flows or financial condition.
Prior to the issuance of the FERC order on July 16, 2020, the authorized ROE used by ITC Great Plains was 12.16% and was composed of a base ROE of 10.66% with a 100 basis point adder for independent transmission ownership and a 50 basis point adder for RTO participation. Based on the July 16, 2020 order, the authorized ROE used by ITC Great Plains was revised to 11.41% and is currently composed of a base ROE of 10.66% with a 25 basis point adder for independent transmission ownership and a 50 basis point adder for RTO participation.
Rate of Return on Equity Complaints
See “Rate of Return on Equity Complaints” in Note 17 for a discussion of the MISO ROE Complaints.

v3.22.0.1

REGULATORY ASSETS AND LIABILITIES
12 Months Ended

Dec. 31, 2021

Regulatory Assets and Liabilities Disclosure [Abstract]

REGULATORY ASSETS AND LIABILITIES REGULATORY ASSETS AND LIABILITIES
Regulatory Assets
The following table summarizes the regulatory asset balances:
December 31,
(In millions of USD) 2021 2020
Regulatory Assets:
Current:
Revenue accruals (including accrued interest of less than $1 and $2 as of December 31, 2021 and 2020, respectively) (a) $ 20 $ 44
Amounts recoverable related to the Initial Complaint (including accrued interest of less than $1 and $2 as of December 31, 2021 and 2020, respectively) (b) 1 8
Total current 21 52
Non-current:
Revenue accruals (including accrued interest of less than $1 as of December 31, 2021 and 2020) (a) 10 19
ITCTransmission ADIT deferral (net of accumulated amortization of $57 and $54 as of December 31, 2021 and 2020, respectively) 4 7
METC ADIT deferral (net of accumulated amortization of $35 and $33 as of December 31, 2021 and 2020, respectively) 8 10
METC regulatory deferrals (net of accumulated amortization of $12 and $11 as of December 31, 2021 and 2020, respectively) 3 4
Income taxes recoverable related to AFUDC equity 114 106
ITC Great Plains start-up, development and pre-construction (net of accumulated amortization of $9 and $7 as of December 31, 2021 and 2020, respectively) 4 6
Pensions and postretirement 20 30
Income taxes recoverable related to implementation of the Michigan Corporate Income Tax 6 6
Accrued asset removal costs 21 24
Total non-current 190 212
Total $ 211 $ 264
____________________________
(a)Refer to discussion of revenue accruals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries do not earn a return on the balance of these regulatory assets, but do accrue interest carrying costs, which are subject to rate recovery along with the principal amount of the revenue accrual.
(b)Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”
ITCTransmission ADIT Deferral
The carrying amount of the ITCTransmission ADIT Deferral is the remaining unamortized balance of the portion of ITCTransmission’s purchase price in excess of fair value of net assets acquired from DTE Energy approved for inclusion in future rates by the FERC. The original amount recorded for this regulatory asset of $61 million is recognized in rates and amortized on a straight-line basis over 20 years beginning March 1, 2003. ITCTransmission includes the remaining unamortized balance of this regulatory asset in rate base. ITCTransmission recorded amortization expense of $3 million annually during 2021, 2020 and 2019, which is included in depreciation and amortization in our consolidated statements of comprehensive income and recovered through ITCTransmission’s cost-based Formula Rate template.
METC ADIT Deferral
The carrying amount of the METC ADIT Deferral is the remaining unamortized balance of the portion of METC’s purchase price in excess of the fair value of net assets acquired at the time MTH acquired METC from
Consumers Energy approved for inclusion in future rates by the FERC. The original amount approved for recovery recorded for this regulatory asset of $43 million is recognized in rates and amortized on a straight-line basis over 18 years beginning January 1, 2007. METC includes the remaining unamortized balance of this regulatory asset in rate base. METC recorded amortization expense of $2 million annually during 2021, 2020 and 2019, which is included in depreciation and amortization in our consolidated statements of comprehensive income and recovered through METC’s cost-based Formula Rate template.
METC Regulatory Deferrals
The carrying amount of the METC Regulatory Deferrals is the amount METC has deferred, as a regulatory asset, of depreciation and related interest expense associated with new transmission assets placed in service from January 1, 2001 through December 31, 2005 that were included on METC’s balance sheet at the time MTH acquired METC from Consumers Energy. The original amount recorded for this regulatory asset of $15 million, and approved for inclusion in future rates by the FERC, is recognized in rates and amortized over 20 years beginning January 1, 2007. METC includes the remaining unamortized balance of this regulatory asset in rate base. METC recorded amortization expense of $1 million annually during 2021, 2020 and 2019, which is included in depreciation and amortization in our consolidated statements of comprehensive income and recovered through METC’s cost-based Formula Rate template.
Income Taxes Recoverable Related to AFUDC Equity
Accounting standards for income taxes provide that a regulatory asset be recorded if it is probable that a future increase in taxes payable, relating to the book depreciation of AFUDC equity that has been capitalized to property, plant and equipment, will be recovered from customers through future rates. The regulatory asset for the tax effects of AFUDC equity is recovered over the life of the underlying book asset in a manner that is consistent with the depreciation of the AFUDC equity that has been capitalized to property, plant and equipment. This regulatory asset and the related offsetting deferred income tax liabilities do not affect rate base.
ITC Great Plains Start-Up, Development and Pre-Construction
In 2013, ITC Great Plains made a filing with the FERC, under Section 205 of the FPA, to recover start-up, development and pre-construction expenses in future rates. These expenses included certain costs incurred by ITC Great Plains for two regional cost sharing projects in Kansas prior to construction. In March 2015, the FERC accepted ITC Great Plains’ request to commence amortization of the authorized regulatory assets, subject to refund. In December 2015, the FERC issued an order accepting an uncontested settlement agreement establishing the amounts of the regulatory assets and associated carrying charges to be recovered. ITC Great Plains includes the unamortized balance of these regulatory assets in rate base and amortizes them over a 10-year period, that began in the second quarter of 2015. The amortization expense is recorded to general and administrative expenses in our consolidated statements of comprehensive income and is recovered through ITC Great Plains’ cost-based Formula Rate.
Pensions and Postretirement
Accounting standards for defined benefit pension and other postretirement plans for rate-regulated entities allow for amounts that otherwise would have been charged to AOCI to be recorded as a regulatory asset. As the unrecognized amounts recorded to this regulatory asset are recognized, expenses will be recovered from customers in future rates under our cost-based Formula Rates. This regulatory asset is not included when determining rate base.
Income Taxes Recoverable Related to Implementation of the Michigan Corporate Income Tax
Under the Michigan Corporate Income Tax, we are taxed at a rate of 6.0% on federal taxable income attributable to our operations in the state of Michigan, subject to certain adjustments. In 2011, due to certain Michigan tax law changes we were required to establish new deferred income tax balances under the Michigan Corporate Income Tax, and the net result was incremental deferred state income tax liabilities at both ITCTransmission and METC. Under our cost-based Formula Rate, the future tax receivable as a result of the tax law change has resulted in the recognition of a regulatory asset, which will be collected from customers for the 23-year period and the 32-year period for ITCTransmission and METC, respectively, beginning in 2016. ITCTransmission and METC include this regulatory asset within deferred taxes for rate-making purposes when determining rate base.
Accrued Asset Removal Costs
The carrying amount of the accrued asset removal costs represents the difference between incurred costs to remove property, plant and equipment and the estimated removal costs included and collected in rates. The portion of depreciation expense included in our depreciation rates related to asset removal costs reduces this regulatory asset and removal costs incurred are added to this regulatory asset. In addition, this regulatory asset has also been adjusted for timing differences between incurred costs to settle legal asset retirement obligations and the recognition of such obligations under the standards set forth by the FASB. Our Regulated Operating Subsidiaries include this item, excluding the cost component related to the recognition of our legal asset retirement obligations under the standards set forth by the FASB, as a reduction to accumulated depreciation for rate-making purposes, when determining rate base.
Regulatory Liabilities
The following table summarizes the regulatory liability balances:
December 31,
(In millions of USD) 2021 2020
Regulatory Liabilities:
Current:
Revenue deferrals (including accrued interest of $1 and less than $1 as of December 31, 2021 and 2020, respectively) (a) $ 13 $ 1
Refund related to the Initial Complaint (including accrued interest of $1 as of December 31, 2020) (b) — 13
Other 1 —
Total current 14 14
Non-current:
Revenue deferrals (including accrued interest of less than $1 as of December 31, 2021 and 2020) (a) 19 12
Accrued asset removal costs 70 73
Excess state income tax deductions 3 3
Income taxes refundable related to implementation of the TCJA 495 507
Pensions and postretirement 31 16
Other 1 1
Total non-current 619 612
Total $ 633 $ 626
____________________________
(a)Refer to discussion of revenue deferrals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries accrue interest on the true-up amounts which will be refunded through rates along with the principal amount of revenue deferrals in future periods.
(b)Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”
Accrued Asset Removal Costs
The carrying amount of the accrued asset removal costs represents the difference between incurred costs to remove property, plant and equipment and the estimated removal costs included and collected in rates. The portion of depreciation expense included in our depreciation rates related to asset removal costs is added to this regulatory liability and removal expenditures incurred are charged to this regulatory liability. Our Regulated Operating Subsidiaries include this item within accumulated depreciation for rate-making purposes and determining rate base.
Excess State Income Tax Deductions
Our Regulated Operating Subsidiaries have taken state income tax deductions associated with property additions that exceed the tax basis of property, and the unrealized income tax benefits resulting from these
deductions are expected to be refunded to customers through future rates when the income tax benefits are realized. This regulatory liability is included within deferred taxes for rate-making purposes when determining rate base.
Income Taxes Refundable Related to Implementation of the TCJA
Under the TCJA, we were required to revalue our deferred tax assets and liabilities at the new federal corporate income tax rate as of the date of the enactment of the TCJA, which resulted in lower net deferred tax liabilities and the establishment of a net regulatory liability for excess deferred taxes at our Regulated Operating Subsidiaries. For our Regulated Operating Subsidiaries, our deferred taxes are subject to a normalization method of accounting for the excess tax reserves resulting from the change in the federal statutory tax rate which requires the use of either the ARAM or the alternative method, RSGM, for assets related to public utility property. Prior to 2021, the ARAM method was used for the return of excess deferred taxes to customers associated with public utility property. Beginning in 2021, we began using RSGM for the return of all remaining categories of excess deferred taxes to customers, pursuant to the interpretation of recent released revenue procedures and private letter rulings. During the years ended December 31, 2021 and 2020, we recorded $8 million and $2 million, respectively, of amortization related to the excess deferred taxes under RSGM and ARAM. The net regulatory liability is included within deferred taxes for rate-making purposes when determining rate base.
Pensions and Postretirement
Accounting standards for defined benefit pension and other postretirement plans for rate-regulated entities allow for amounts that otherwise would have been credited to AOCI to be recorded as a regulatory liability. As the unrecognized amounts recorded to this regulatory liability are recognized, amounts will be returned to customers in future rates under our cost-based Formula Rates. This regulatory liability is not included when determining rate base.

v3.22.0.1

GOODWILL AND INTANGIBLE ASSETS
12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS INTANGIBLE ASSETS
METC has recorded intangible assets with finite lives derived from the portion of regulatory assets recorded on METC’s historical FERC financial statements that were not recorded on METC’s historical GAAP financial statements. These intangible assets are associated with the METC Regulatory Deferrals and the METC ADIT Deferral as described in Note 6. The carrying amounts of the intangible asset for the METC Regulatory Deferrals and the METC ADIT Deferral were $10 million and $3 million (net of accumulated amortization of $30 million and $16 million), respectively, as of December 31, 2021, and $12 million and $4 million (net of accumulated amortization of $28 million and $15 million), respectively, as of December 31, 2020. The amortization periods for the METC Regulatory Deferrals and the METC ADIT Deferral are 20 and 18 years, respectively, beginning January 1, 2007. METC earns an equity return on the remaining unamortized balance of both intangible assets and recovers the amortization expense through METC’s cost-based Formula Rate template.
ITC Great Plains has recorded intangible assets for payments made by and obligations of ITC Great Plains to certain TOs to acquire rights, which are required under the SPP tariff to designate ITC Great Plains to build, own and operate projects within the SPP region, including three regional cost sharing projects in Kansas. The carrying amount of these intangible assets was $13 million (net of accumulated amortization of $3 million) as of both December 31, 2021 and 2020. The amortization period for these intangible assets is 50 years, beginning March 31, 2011.
We recognized $3 million, $4 million, and $3 million of amortization expense for our intangible assets during the years ended December 31, 2021, 2020 and 2019, respectively, recorded in depreciation and amortization on the consolidated statements of comprehensive income. We expect the annual amortization of our intangible assets that have been recorded as of December 31, 2021 to be as follows:
(In millions of USD)
2022 $ 3
2023 4
2024 3
2025 2
2026 2
2027 and thereafter 12
Total $ 26

v3.22.0.1

PROPERTY, PLANT AND EQUIPMENT
12 Months Ended

Dec. 31, 2021

Public Utilities, Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment — net consisted of the following:
December 31,
(In millions of USD) 2021 2020
Property, plant and equipment
Regulated Operating Subsidiaries:
Property, plant and equipment in service $ 11,434 $ 10,661
Construction work in progress 529 523
Capital equipment inventory 96 103
Other 87 81
ITC Holdings and other 14 14
Total 12,160 11,382
Less: Accumulated depreciation and amortization (2,199) (2,055)
Property, plant and equipment, net $ 9,961 $ 9,327
Additions to property, plant and equipment in-service and construction work in progress during 2021 and 2020 were due primarily to projects to upgrade or replace existing transmission plant and update grid security to improve the reliability of our transmission systems as well as transmission infrastructure to support generator interconnections and investments that provide regional benefits such as our MVPs. Additionally, in 2020, we made asset acquisitions which added to our in-service property, plant and equipment.

v3.22.0.1

DEBT
12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

DEBT DEBT
Amounts of outstanding debt were classified as debt maturing within one year and long-term debt in the consolidated statements of financial position as follows:
December 31,
(In millions of USD) 2021 2020
ITC Holdings 6.375% Senior Notes, due September 30, 2036
$ 200 $ 200
ITC Holdings 4.05% Senior Notes, due July 1, 2023 250 250
ITC Holdings 3.65% Senior Notes, due June 15, 2024
400 400
ITC Holdings 5.30% Senior Notes, due July 1, 2043
300 300
ITC Holdings 3.25% Notes, due June 30, 2026
400 400
ITC Holdings 2.70% Senior Notes, due November 15, 2022 (a) 500 500
ITC Holdings 3.35% Senior Notes, due November 15, 2027 500 500
ITC Holdings 2.95% Senior Notes, due May 14, 2030 700 700
ITC Holdings Revolving Credit Agreement, due October 18, 2024 39 37
ITC Holdings Commercial Paper Program (a)
155 67
ITCTransmission 6.125% First Mortgage Bonds, Series C, due March 31, 2036
100 100
ITCTransmission 4.625% First Mortgage Bonds, Series E, due August 15, 2043
285 285
ITCTransmission 4.27% First Mortgage Bonds, Series F, due June 10, 2044
100 100
ITCTransmission 4.00% First Mortgage Bonds, Series G, due March 30, 2053
225 225
ITCTransmission 3.30% First Mortgage Bonds, Series H, due August 28, 2049
75 75
ITCTransmission Revolving Credit Agreement, due October 18, 2024 88 33
METC 5.64% Senior Secured Notes, due May 6, 2040
50 50
METC 3.98% Senior Secured Notes, due October 26, 2042
75 75
METC 4.19% Senior Secured Notes, due December 15, 2044
150 150
METC 3.90% Senior Secured Notes, due April 26, 2046
200 200
METC 4.55% Senior Secured Notes, due January 15, 2049
50 50
METC 4.65% Senior Secured Notes, due July 10, 2049 50 50
METC 2.90% Senior Secured Notes, Series A, due August 3, 2051 75 —
METC 3.02% Senior Secured Notes, due October 14, 2055 150 150
METC Revolving Credit Agreement, due October 18, 2024 30 20
ITC Midwest 6.15% First Mortgage Bonds, Series A, due January 31, 2038
175 175
ITC Midwest 4.60% First Mortgage Bonds, Series D, due December 17, 2024
75 75
ITC Midwest 3.50% First Mortgage Bonds, Series E, due January 19, 2027
100 100
ITC Midwest 4.09% First Mortgage Bonds, Series F, due April 30, 2043
100 100
ITC Midwest 3.83% First Mortgage Bonds, Series G, due April 7, 2055
225 225
ITC Midwest 4.16% First Mortgage Bonds, Series H, due April 18, 2047
200 200
ITC Midwest 4.32% First Mortgage Bonds, Series I, due November 1, 2051
175 175
ITC Midwest 3.13% First Mortgage Bonds, Series J, due July 15, 2051 180 180
ITC Midwest Revolving Credit Agreement, due October 18, 2024 139 75
ITC Great Plains 4.16% First Mortgage Bonds, Series A, due November 26, 2044
150 150
ITC Great Plains Revolving Credit Agreement, due October 18, 2024 33 33
Other 3 —
Total principal 6,702 6,405
Unamortized deferred financing fees and discount
(39) (43)
Total debt
$ 6,663 $ 6,362
____________________________
(a)As of December 31, 2021 and 2020 there was $654 million and $67 million, respectively, net of unamortized deferred financing fees and discount, of debt included within debt maturing within one year in the consolidated statements of financial position.
The annual maturities of debt as of December 31, 2021 are as follows:
(In millions of USD)
2022 $ 655
2023 250
2024 804
2025 —
2026 400
2027 and thereafter 4,593
Total $ 6,702
ITC Holdings
Senior Unsecured Notes
On May 14, 2020, ITC Holdings completed the private offering of $700 million aggregate principal amount of unsecured 2.95% Senior Notes, due May 14, 2030. The net proceeds from this offering were used to repay the amount outstanding under ITC Holdings’ $400 million term loan credit agreement, to repay $122 million under ITC Holdings’ revolving credit agreement, and to repay $92 million under ITC Holdings’ commercial paper program, with remaining proceeds to be used for general corporate purposes. These Senior Notes were issued under ITC Holdings’ indenture, dated April 18, 2013.
Commercial Paper Program
ITC Holdings has an ongoing commercial paper program for the issuance and sale of unsecured commercial paper in an aggregate amount not to exceed $400 million outstanding at any one time. As of December 31, 2021, ITC Holdings had $155 million of commercial paper, net of discount, issued and outstanding under the program, with a weighted-average interest rate of 0.2% and weighted average remaining days to maturity of 32 days. The amount outstanding as of December 31, 2021 was classified as debt maturing within one year in the consolidated statements of financial position. As of December 31, 2020, ITC Holdings had $67 million of commercial paper issued and outstanding.
ITCTransmission
First Mortgage Bonds
On January 14, 2022, ITCTransmission issued $130 million of aggregate principal amount of 2.93% First Mortgage Bonds, Series J due January 14, 2052. The proceeds were used to repay existing indebtedness under the revolving credit agreement and intercompany loan agreement and will also be used to partially fund capital expenditures and for general corporate purposes. ITCTransmission also issued an additional $20 million of aggregate principal amount of 2.93% First Mortgage Bonds, Series I due January 14, 2052, the proceeds of which are expected to fund or refinance a portfolio of eligible renewable energy projects based on the green bond framework established by ITC Holdings. All of ITCTransmission’s First Mortgage Bonds are issued under its First Mortgage and Deed of Trust and secured by a first mortgage lien on substantially all of its real property and tangible personal property.
METC
Senior Secured Notes
On August 3, 2021, METC issued $75 million of 2.90% Series A Senior Secured Notes, due August 3, 2051. The proceeds from the Series A Senior Secured Notes are expected to fund or refinance a portfolio of eligible renewable energy projects based on the green bond framework established by ITC Holdings. METC has an additional $75 million delayed draw of 3.05% Series B Senior Secured Notes in May 2022 with a due date 30 years from the date of issuance. The proceeds from the Series B Senior Secured Notes are expected to be used to repay borrowings under the METC revolving credit agreement, to partially fund capital expenditures and for general corporate purposes. All of METC’s Senior Secured Notes are issued under its first mortgage indenture and secured by a first mortgage lien on substantially all of its real property and tangible personal property.
On October 14, 2020, METC issued $150 million of 3.02% Senior Secured Notes, due October 14, 2055. The proceeds from the issuance were used to repay amounts outstanding under METC’s term loan credit agreement, to repay borrowings under its revolving credit agreement, to partially fund capital expenditures and for general corporate purposes.
Term Loan Credit Agreement
On January 23, 2020, METC entered into an unsecured, unguaranteed term loan credit agreement, due January 23, 2021, under which METC borrowed the maximum of $75 million available under the agreement. The proceeds were used for general corporate purposes, primarily the repayment of borrowings under the METC revolving credit agreement. This borrowing was repaid in full on October 14, 2020 from the proceeds of the METC Senior Secured Notes issued on October 14, 2020. The weighted-average interest rate throughout the life of the loan was 1.08%.
ITC Midwest
First Mortgage Bonds
On July 15, 2020, ITC Midwest issued an aggregate of $180 million of 3.13% First Mortgage Bonds due July 15, 2051. The proceeds were used to partially repay existing indebtedness under the ITC Midwest revolving credit agreement, partially fund capital expenditures and for general corporate purposes. ITC Midwest’s First Mortgage Bonds were issued under its first mortgage and deed of trust and secured by a first mortgage lien on substantially all of its real property and tangible personal property.
Derivative Instruments and Hedging Activities
We have entered into interest rate swaps to manage interest rate risk associated with the forecasted future issuance of fixed-rate debt at ITC Holdings, the proceeds of which will be used for the expected repayment of the ITC Holdings 2.70% Senior Notes, due November 15, 2022. At December 31, 2021, ITC Holdings had the following interest rate swaps:
Interest Rate Swaps
(in millions of USD, except percentages) Notional Amount Weighted Average Fixed Rate Original Term Effective Date
July 2021 swap $ 45 1.113% 5 years November 2022
November 2021 swap 45 1.581% 5 years November 2022
November 2021 swap 45 1.492% 5 years November 2022
November 2021 swap 45 1.497% 5 years November 2022
November 2021 swap 50 1.544% 5 years November 2022
December 2021 swap 50 1.560% 5 years November 2022
December 2021 swap 50 1.489% 5 years November 2022
December 2021 swap 45 1.475% 5 years November 2022
Total $ 375 1.471%
The 5-year term interest rate swaps call for ITC Holdings to receive interest quarterly at a variable rate equal to LIBOR and to pay interest semi-annually at various fixed rates effective for the 5-year period beginning November 15, 2022. The weighted-average interest rate of the interest rate swaps was 1.471% at December 31, 2021. The agreements include a mandatory early termination provision and will be terminated no later than the effective date of the interest rate swaps of November 15, 2022. The interest rate swaps have been determined to be highly effective at offsetting changes in the fair value of the forecasted interest cash flows associated with the debt issuance, resulting from changes in benchmark interest rates from the trade date of the interest rate swaps to the issuance date of the debt obligation.
The interest rate swaps qualify for cash flow hedge accounting treatment, whereby any gain or loss recognized from the trade date to the effective date is recorded net of tax in AOCI. This amount will be accumulated and amortized as a component of interest expense over the life of the forecasted debt. As of December 31, 2021, the fair value of the derivative instruments of $2 million was recorded in other current assets in the consolidated statements of financial position. The interest rate swaps do not contain credit-risk-related contingent features. Refer to Note 12 for additional fair value information. As of December 31, 2020, ITC Holdings did not have any interest rate swaps outstanding.
Revolving Credit Agreements
On May 17, 2021, ITC Holdings, ITCTransmission, METC, ITC Midwest and ITC Great Plains amended their respective revolving credit agreements each dated October 23, 2017, as previously amended and restated on January 10, 2020. The amendments extend the maturity date of the revolving credit agreements from October 2023 to October 2024. The determination of the applicable interest rates and commitment fee rates in the new agreements is consistent with the previous agreements and remains subject to adjustment based on the borrower’s credit rating. At December 31, 2021, ITC Holdings and certain of its Regulated Operating Subsidiaries had the following unsecured revolving credit facilities available:
(In millions of USD, except percentages) Total
Available
Capacity Outstanding
Balance (a) Unused
Capacity Weighted Average
Interest Rate on
Outstanding Balance (b) Commitment
Fee Rate (c)
ITC Holdings $ 400 $ 39 $ 361 (d) 1.4% 0.175 %
ITCTransmission 100 88 12 1.1% 0.10 %
METC 100 30 70 1.1% 0.10 %
ITC Midwest 225 139 86 1.1% 0.10 %
ITC Great Plains 75 33 42 1.1% 0.10 %
Total $ 900 $ 329 $ 571
____________________________
(a)Included within long-term debt in the consolidated statements of financial position.
(b)Interest charged on borrowings depends on the variable rate structure we elected at the time of each borrowing.
(c)Calculation based on the average daily unused commitments, subject to adjustment based on the borrower’s credit rating.
(d)ITC Holdings’ revolving credit agreement may be used for general corporate purposes, including to repay commercial paper issued pursuant to the commercial paper program described above, if necessary. While outstanding commercial paper does not reduce available capacity under ITC Holdings’ revolving credit agreement, the unused capacity under this agreement adjusted for the commercial paper outstanding was $206 million as of December 31, 2021.

v3.22.0.1

INCOME TAXES
12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

INCOME TAXES INCOME TAXES
Our effective tax rate varied from the statutory federal income tax rate due to differences between the book and tax treatment of various transactions as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Income tax expense at 21% federal statutory rate $ 112 $ 114 $ 118
State income taxes (net of federal benefit) 24 28 22
AFUDC equity (5) (4) (5)
Revaluation of deferred federal income taxes (a) (9) (2) (2)
Valuation allowance 4 — —
Other, net 1 — (1)
Total income tax provision $ 127 $ 136 $ 132
____________________________
(a)Amount for the year ended December 31, 2021 is related to the change in our amortization method associated with excess deferred tax liabilities. Refer to discussion in Note 6 under “Income Taxes Refundable Related to Implementation of the TCJA”.
Components of the income tax provision were as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Current income tax benefit $ — $ (2) $ (3)
Deferred income tax expense 127 138 135
Total income tax provision $ 127 $ 136 $ 132
For the years ended December 31, 2021, 2020 and 2019, our effective tax rates were 23.8%, 25.0% and 23.6%, respectively.
Deferred income tax assets (liabilities) consisted of the following:
December 31,
(In millions of USD) 2021 2020
Property, plant and equipment $ (1,274) $ (1,156)
Federal income tax NOLs and other credits 49 85
METC regulatory deferral (a) (3) (4)
Acquisition adjustments — ADIT deferrals (a) (3) (5)
Goodwill (145) (139)
Regulatory liability gross up — TCJA 131 134
Pension and postretirement liabilities 22 20
State income tax NOLs (net of federal benefit) 57 58
True-up adjustment principal & interest — (14)
Valuation allowance (4) —
Other, net 9 8
Net deferred tax liabilities $ (1,161) $ (1,013)
Gross deferred income tax liabilities $ (1,434) $ (1,333)
Gross deferred income tax assets 277 320
Valuation allowance (4) —
Net deferred tax liabilities $ (1,161) $ (1,013)
____________________________
(a)Described in Note 6
We had federal income tax NOLs as of December 31, 2021. We expect to use our NOLs prior to their expirations starting in 2036. We also had state income tax NOLs as of December 31, 2021. While we expect to utilize the majority of these state NOLs prior to their expiration, we believe that it is more likely than not that the benefit from certain state NOL carryforwards will not be realized. In recognition of this risk, we have provided a valuation allowance of $4 million on the deferred tax assets related to these state NOL carryforwards.

v3.22.0.1

FAIR VALUE MEASUREMENTS
12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

FAIR VALUE MEASUREMENTS FAIR VALUE MEASUREMENTS
The measurement of fair value is based on a three-tier hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. For the years ended December 31, 2021 and 2020, there were no transfers between levels.
Our assets measured at fair value subject to the three-tier hierarchy at December 31, 2021, were as follows:
Fair Value Measurements at Reporting Date Using
Quoted Prices in
Active Markets for
Identical Assets Significant
Other Observable
Inputs Significant
Unobservable
Inputs
(in millions of USD) (Level 1) (Level 2) (Level 3)
Financial assets measured on a recurring basis:
Mutual funds — fixed income securities $ 51 $ — $ —
Mutual funds — equity securities 12 — —
Interest rate swap derivatives — 2 —
Total $ 63 $ 2 $ —
Our assets measured at fair value subject to the three-tier hierarchy at December 31, 2020, were as follows:
Fair Value Measurements at Reporting Date Using
Quoted Prices in
Active Markets for
Identical Assets Significant
Other Observable
Inputs Significant
Unobservable
Inputs
(in millions of USD) (Level 1) (Level 2) (Level 3)
Financial assets measured on a recurring basis:
Cash equivalents $ 1 $ — $ —
Mutual funds — fixed income securities 52 — —
Mutual funds — equity securities 10 — —
Total $ 63 $ — $ —
As of December 31, 2021 and 2020, we held certain assets that are required to be measured at fair value on a recurring basis. The assets included in the table consist of investments recorded within cash and cash equivalents and other long-term assets, including investments held in a trust associated with our supplemental benefit plans described in Note 11. The mutual funds we own are publicly traded and are recorded at fair value based on observable trades for identical securities in an active market. Changes in the observed trading prices and liquidity of money market funds are monitored as additional support for determining fair value. Gains and losses for all mutual fund investments are recorded in other operating income and expense.
As of December 31, 2021, the assets related to derivatives consist of interest rate swaps as discussed in Note 9. The fair value of our interest rate swap derivatives is determined based on a DCF method using LIBOR swap rates, which are observable at commonly quoted intervals.
We also held non-financial assets that are required to be measured at fair value on a non-recurring basis. These consist of goodwill and intangible assets. We did not record any impairment charges on long-lived assets and no other significant events occurred requiring non-financial assets and liabilities to be measured at fair value (subsequent to initial recognition) during the years ended December 31, 2021 and 2020. Refer to Note 8 for additional information on our intangible assets.
Fair Value of Financial Assets and Liabilities
Fixed Rate Debt
Based on the borrowing rates obtained from third party lending institutions currently available for bank loans with similar terms and average maturities from active markets, the fair value of our consolidated long-term debt and debt maturing within one year, excluding revolving credit agreements and commercial paper, was $6,995 million and $7,119 million at December 31, 2021 and 2020, respectively. These fair values represent Level 2 under the three-tier hierarchy described above. The total book value of our consolidated long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving credit agreements and commercial paper, was $6,179 million and $6,097 million at December 31, 2021 and 2020, respectively.
Revolving Credit Agreements
At December 31, 2021 and 2020, we had a consolidated total of $329 million and $198 million, respectively, outstanding under our revolving credit agreements, which are variable rate loans. The fair value of these loans approximates book value based on the borrowing rates currently available for variable rate loans obtained from third party lending institutions. These fair values represent Level 2 under the three-tier hierarchy described above.
Other Financial Instruments
The carrying value of other financial instruments included in current assets and current liabilities, including cash and cash equivalents, special deposits and commercial paper, approximates their fair value due to the short-term nature of these instruments.

v3.22.0.1

RETIREMENT BENEFITS AND ASSETS HELD IN TRUST
12 Months Ended

Dec. 31, 2021

Retirement Benefits [Abstract]

RETIREMENT AND BENEFITS AND ASSETS HELD IN TRUST RETIREMENT BENEFITS AND ASSETS HELD IN TRUST
Pension and Postretirement Plan Benefits
We have a qualified defined benefit pension plan (“retirement plan”) for eligible employees, comprised of a traditional final average pay plan and a cash balance plan. The traditional final average pay plan is noncontributory, covers select employees, and provides retirement benefits based on years of benefit service, average final compensation, and age at retirement. The cash balance plan is also noncontributory, covers substantially all employees, and provides retirement benefits based on eligible compensation and interest credits. Our funding practice for the retirement plan is generally to fund the annual net pension cost, though we may contribute additional amounts as necessary to meet the minimum funding requirements of the Employee Retirement Income Security Act of 1974, or as we deem appropriate. We made contributions of $4 million to the retirement plan in each of 2021, 2020, and 2019. We expect to contribute $3 million to the retirement plan in 2022.
We also have two supplemental nonqualified, noncontributory, defined benefit pension plans for selected management employees (the “supplemental benefit plans” and collectively with the retirement plan, the “pension plans”). The supplemental benefit plans provide for benefits that supplement those provided by the retirement plan. The obligations under these supplemental benefit plans are included in the pension benefit obligation calculations below. The investments held in trust for the supplemental benefit plans of $54 million and $56 million at December 31, 2021 and 2020, respectively, are not included in the plan asset amounts presented throughout this footnote, but are included in other assets on our consolidated statements of financial position. For the years ended December 31, 2021, 2020, and 2019, we contributed $3 million, $3 million, and $1 million, respectively, to these supplemental benefit plans.
We provide certain postretirement health care, dental, and life insurance benefits for eligible employees (the “postretirement benefit plan”). We contributed $8 million, $10 million, and $9 million to the postretirement benefit plan in 2021, 2020, and 2019, respectively. We expect to contribute $8 million to the postretirement benefit plan in 2022.
Net periodic benefit costs by component for the pension plans and postretirement benefit plan were as follows:
Pension Plans Postretirement Benefit Plan
Years Ended December 31, Years Ended December 31,
(In millions of USD) 2021 2020 2019 2021 2020 2019
Service cost $ 9 $ 8 $ 7 $ 11 $ 11 $ 9
Interest cost 3 4 5 3 4 4
Expected return on plan assets (6) (6) (5) (6) (5) (4)
Amortization of unrecognized loss 1 1 1 — — —
Net benefit cost $ 7 $ 7 $ 8 $ 8 $ 10 $ 9
The following table reconciles the obligations, assets, and funded status of the pension plans and postretirement benefit plan as well as the presentation of the funded status of the plans in the consolidated statements of financial position:
Pension Plans Postretirement Benefit Plan
December 31, December 31,
(In millions of USD) 2021 2020 2021 2020
Change in Benefit Obligation:
Beginning projected benefit obligation $ (162) $ (141) $ (122) $ (113)
Service cost (9) (8) (11) (11)
Interest cost (3) (4) (3) (4)
Plan amendments — — — 2
Actuarial net gain/(loss) 5 (16) 8 3
Benefits paid 7 7 1 1
Settlements 2 — — —
Ending projected benefit obligation (160) (162) (127) (122)
Change in Plan Assets:
Beginning plan assets at fair value 107 91 120 95
Actual return on plan assets 10 15 13 16
Employer contributions 4 4 8 10
Benefits paid (4) (3) (1) (1)
Ending plan assets at fair value 117 107 140 120
Funded status, (underfunded)/overfunded $ (43) $ (55) $ 13 $ (2)
Accumulated benefit obligation:
Retirement plan $ (99) $ (95) N/A N/A
Supplemental benefit plans (54) (60) N/A N/A
Total accumulated benefit obligation $ (153) $ (155) $ — $ —
Amounts recorded as:
Funded Status:
Accrued pension and postretirement liabilities $ (52) $ (57) $ — $ (2)
Other non-current assets 13 6 13 —
Other current liabilities (4) (4) — —
Total $ (43) $ (55) $ 13 $ (2)
Unrecognized Amounts in Non-current Regulatory Assets/(Liabilities):
Net actuarial loss/(gain) $ 19 $ 30 $ (29) $ (14)
Net prior service cost/(credit) 1 — (2) (2)
Total $ 20 $ 30 $ (31) $ (16)
The unrecognized amounts that otherwise would have been charged and/or credited to AOCI in accordance with the GAAP guidance on accounting for retirement benefits are recorded as a regulatory asset or regulatory liability on our consolidated statements of financial position, as discussed in Note 6. The amounts recorded as a regulatory asset or regulatory liability represent a net periodic benefit cost or credit to be recognized in our operating income in future periods. Our measurement of the accumulated benefit obligation for the postretirement benefit plan as of December 31, 2021 and 2020 does not reflect the potential receipt of any subsidies under the Medicare Prescription Drug, Improvement and Modernization Act of 2003.
The net actuarial gains for the year ended December 31, 2021 within the change in benefit obligation for both the pension plans and postretirement benefit plan are primarily the result of increases in the discount rates and actual returns on plan assets greater than expected.
The net actuarial loss for the year ended December 31, 2020 within the change in benefit obligation for the pension plans is primarily the result of decreases in the discount rates. The net actuarial gain for the year ended December 31, 2020 within the change in benefit obligation for the postretirement benefit plan was driven primarily by per capita experience gains as well as other actuarial gains, partially offset by a decrease in the discount rate.
The combined projected benefit obligation and fair value of plan assets for those plans in which the projected benefit obligation is in excess of the fair value of plan assets are as follows:
Pension Plans
December 31,
(In millions of USD) 2021 2020
Projected benefit obligation $ (56) $ (61)
Fair value of plan assets (a) — —
____________________________
(a)The investments held in trust for our supplemental benefit plans are not included in the plan asset amounts presented herein, but are included in other assets on our consolidated statements of financial position.
The combined accumulated benefit obligation and fair value of plan assets for those plans in which the accumulated benefit obligation is in excess of the fair value of plan assets are as follows:
Pension Plans
December 31,
(In millions of USD) 2021 2020
Accumulated benefit obligation $ (54) $ (60)
Fair value of plan assets (a) — —
____________________________
(a)The investments held in trust for our supplemental benefit plans are not included in the plan asset amounts presented herein, but are included in other assets on our consolidated statements of financial position.
Actuarial assumptions used to determine the benefit obligations for the pension plans and postretirement benefit plan are as follows:
Pension Plans Postretirement Benefit Plan
December 31, December 31,
2021 2020 2019 2021 2020 2019
Weighted average discount rate 2.86% 2.49% 3.27% 3.14% 2.94% 3.61%
Weighted average interest crediting rate 4.00% 4.00% 4.00% N/A N/A N/A
Annual rate of salary increases 4.00% 4.00% 4.00% 4.00% 4.00% 4.00%
Health care cost trend rate N/A N/A N/A 5.75% 6.00% 6.25%
Ultimate health care cost trend rate N/A N/A N/A 5.00% 5.00% 5.00%
Year that the ultimate trend rate is reached N/A N/A N/A 2025 2025 2025
Annual rate of increase in dental benefit costs N/A N/A N/A 4.50% 4.50% 4.50%
Actuarial assumptions used to determine the benefit cost for the pension plans and postretirement benefit plan are as follows:
Pension Plans Postretirement Benefit Plan
Years Ended December 31, Years Ended December 31,
2021 2020 2019 2021 2020 2019
Weighted average discount rate — service cost 2.77% 3.47% 4.42% 3.20% 3.80% 4.58%
Weighted average discount rate — interest cost 1.93% 2.91% 3.99% 2.50% 3.30% 4.28%
Weighted average interest crediting rate 4.00% 4.00% 4.50% N/A N/A N/A
Annual rate of salary increases 4.00% 4.00% 4.00% 4.00% 4.00% 4.00%
Health care cost trend rate N/A N/A N/A 6.00% 6.25% 6.50%
Ultimate health care cost trend rate N/A N/A N/A 5.00% 5.00% 5.00%
Year that the ultimate trend rate is reached N/A N/A N/A 2025 2025 2025
Expected long-term rate of return on plan assets 5.70% 6.00% 6.60% 4.30% 4.50% 5.00%
At December 31, 2021, the projected benefit payments for the pension plans and postretirement benefit plan calculated using the same assumptions as those used to calculate the benefit obligations described above are as follows:
(In millions of USD) Pension Plans Postretirement Benefit Plan
2022 $ 8 $ 2
2023 9 2
2024 9 2
2025 10 3
2026 10 3
2027 through 2031 63 22
Investment Objectives and Fair Value Measurement
The general investment objectives of the retirement plan and postretirement benefit plan include maximizing the return within reasonable and prudent levels of risk and controlling administrative and management costs. Investment decisions are made by our retirement benefits board as delegated by our board of directors. Equity investments may include various types of U.S. and international equity securities, such as large-cap, mid-cap, and small-cap stocks. Fixed income investments may include cash and short-term instruments, U.S. Government securities, corporate bonds, mortgages, and other fixed income investments. No investments are prohibited for use in the retirement plan or postretirement benefit plan, including derivatives, but our exposure to derivatives currently is not material. We intend that the long-term capital growth of the retirement and postretirement benefit plans, together with employer contributions, will provide for the payment of the benefit obligations.
As of December 31, 2021 and 2020, the plan assets of the retirement plan and postretirement benefit plan consisted of the following assets by category:
Target Allocation Pension Plans Postretirement Benefit Plan
Asset Category 2021 2021 2020 2021 2020
Fixed income securities 50 % 50 % 50 % 50 % 50 %
Equity securities 50 % 50 % 50 % 50 % 50 %
Total 100 % 100 % 100 % 100 % 100 %
We determine our expected long-term rate of return on plan assets based on the current and expected target allocations of the retirement plan and postretirement benefit plan investments and considering historical and expected long-term rates of return on comparable fixed income investments and equity investments.
The measurement of fair value is based on a three-tier hierarchy, which prioritizes the inputs used in measuring fair value. These tiers include: Level 1, defined as observable inputs, such as quoted prices in active markets; Level 2, defined as inputs other than quoted prices in active markets that are either directly or indirectly observable; and Level 3, defined as unobservable inputs in which little or no market data exists, therefore, requiring an entity to develop its own assumptions. Changes in economic conditions or model-based valuation techniques may require the transfer of financial instruments from one fair value level to another. In such instances, the transfer is reported at the beginning of the reporting period. For the years ended December 31, 2021 and 2020, there were no transfers between levels.
For the years ended December 31, 2021 and 2020, the fair value of retirement plan and postretirement benefit plan assets measured on a recurring basis at the Level 1 tier were as follows:
Pension Plans Postretirement Benefit Plan
December 31, December 31,
(In millions of USD) 2021 2020 2021 2020
Mutual funds — U.S. equity securities $ 47 $ 43 $ 67 $ 57
Mutual funds — international equity securities 12 11 3 3
Mutual funds — fixed income securities 58 53 70 60
Total $ 117 $ 107 $ 140 $ 120
The mutual funds consist primarily of publicly traded mutual funds and are recorded at fair value based on observable trades for identical securities in an active market.
Defined Contribution Plan
We also sponsor a defined contribution retirement savings plan. Participation in this plan is available to substantially all employees. We match employee contributions up to certain predefined limits based upon eligible compensation and the employee’s contribution rate. The cost of this plan was $6 million in 2021, $6 million in 2020, and $5 million in 2019.

v3.22.0.1

STOCKHOLDER'S EQUITY
12 Months Ended

Dec. 31, 2021

Equity [Abstract]

STOCKHOLDERS' EQUITY STOCKHOLDER'S EQUITY
Accumulated Other Comprehensive Income
The following table provides the components of changes in AOCI:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Balance at the beginning of period $ (8) $ 7 $ 4
Derivative Instruments
Reclassification of net loss relating to interest rate cash flow hedges from AOCI to earnings (net of tax of $2 for the year ended December 31, 2021, $1 for the year ended December 31, 2020 and less than $1 for the year ended December 31, 2019) (a) 4 3 1
Gain (loss) on interest rate swaps relating to interest rate cash flow hedges (net of tax of $1 for the year ended December 31, 2021, $8 for the year ended December 31, 2020 and $1 for the year ended December 31, 2019) 2 (18) 2
Total other comprehensive income (loss), net of tax 6 (15) 3
Balance at the end of period $ (2) $ (8) $ 7
____________________________
(a)The reclassification of the net loss relating to interest rate cash flow hedges is reported in interest expense on a pre-tax basis.
The amount of net loss relating to interest rate cash flow hedges to be reclassified from AOCI to earnings for the 12-month period ending December 31, 2022 is expected to be approximately $4 million (net of tax of less than $2 million). The reclassification is reported in interest expense on a pre-tax basis.

v3.22.0.1

SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN
12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

SHARE-BASED COMPENSATION ADN EMPLOYEE SHARE PURCHASE PLAN SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN
We recorded share-based compensation costs as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Operation and maintenance expenses $ 2 $ 2 $ 2
General and administrative expenses 32 23 30
Amounts capitalized to property, plant and equipment 9 7 8
Total share-based compensation costs $ 43 $ 32 $ 40
Total tax benefit recognized in the consolidated statements of comprehensive income
$ 9 $ 8 $ 8
Long-Term Incentive Plans
Under our long-term incentive plans, we may grant long-term incentive awards of PBUs and SBUs to employees, including executive officers, of ITC Holdings and its subsidiaries. Generally, each PBU and SBU granted will be valued based on one share of Fortis common stock traded on the Toronto Stock Exchange, converted to U.S. dollars and settled only in cash. However, certain SBUs granted to the executives may settle in cash, 100% Fortis common stock, or 50% cash and 50% Fortis common stock depending on executives’ settlement elections and whether certain share ownership requirements are met. PBUs and SBUs that are granted pursuant to our long-term incentive plans generally vest on either the third December 31st or January 1st following the grant date, provided the service and performance criteria, as applicable, are satisfied, and will be settled during the subsequent quarter. However, certain awards may vest over a shorter period or on the grant date if certain retirement eligibility criteria are met. The granted awards and related dividend equivalents have no shareholder rights.
Performance-Based Units
The PBUs are classified as liability awards based on the cash settlement feature. The PBUs are measured at fair value at the end of each reporting period, which will fluctuate based on the price of Fortis common stock and the level of achievement of the financial performance criteria, including a market condition and a performance condition. The payout may range from 0% - 200% of the target award, depending on actual performance relative to the performance criteria. The PBUs earn dividend equivalents which are also re-measured consistent with the target award and settled in cash at the end of the vesting period.
The following table shows the changes in PBUs during the year ended December 31, 2021:
Number of
Performance
Based Units
PBUs at December 31, 2020 900,951
Granted 314,940
Vested and paid out (291,325)
Forfeited (25,474)
PBUs at December 31, 2021 899,092
The following table presents the classification in the consolidated statements of financial position of obligations related to outstanding PBUs not yet settled:
December 31,
(In millions of USD) 2021 2020
Accrued compensation $ 28 $ 20
Other long-term liabilities 25 22
Total $ 53 $ 42
The aggregate fair value of PBUs as of December 31, 2021 and 2020 was $72 million and $59 million, respectively. At December 31, 2021, $19 million of total unrecognized compensation cost related to PBUs not yet vested is expected to be recognized over the remaining weighted-average period of 1.7 years.
Service-Based Units
The SBUs are classified as liability awards based on the possibility of cash settlement. The SBUs are measured at fair value at the end of each reporting period, which will fluctuate based on the price of Fortis common stock. The SBUs earn dividend equivalents which are also re-measured based on the price of Fortis common stock and settled in cash at the end of the vesting period.
The following table shows the changes in SBUs during the year ended December 31, 2021:
Number of
Service
Based Units
SBUs at December 31, 2020 687,710
Granted 247,181
Vested and paid out (219,605)
Forfeited (25,474)
SBUs at December 31, 2021 689,812
The following table presents the classification in the consolidated statements of financial position of obligations related to outstanding SBUs not yet settled:
December 31,
(In millions of USD) 2021 2020
Accrued compensation $ 11 $ 9
Other long-term liabilities 11 10
Total $ 22 $ 19
The aggregate fair value of SBUs as of December 31, 2021 and 2020 was $32 million and $28 million, respectively. At December 31, 2021, $10 million of the total unrecognized compensation cost related to SBUs not yet vested is expected to be recognized over the remaining weighted-average period of 1.7 years.
Employee Share Purchase Plan
ITC employees are permitted to purchase common shares of Fortis stock under the Fortis ESPP. ITC Holdings also makes contributions as additional compensation to participating employees’ ESPP accounts. The cost of ITC Holdings’ contribution for the years ended December 31, 2021, 2020, and 2019 was less than $1 million, respectively.

v3.22.0.1

JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES
12 Months Ended

Dec. 31, 2021

Regulated Operations [Abstract]

JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICE JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES
Certain of our Regulated Operating Subsidiaries have agreements with other utilities for the joint ownership of substation assets and transmission lines as discussed in Note 2. We have investments in jointly owned utility assets as shown in the table below as of December 31, 2021:
Net Investments (a)
(In millions of USD) Substations Lines
ITCTransmission (b) $ — $ 29
METC (c) 17 41
ITC Midwest (d) 49 103
ITC Great Plains (e) 10 23
Total $ 76 $ 196
____________________________
(a)Amount represents our investment in jointly held plant in-service, which has been reduced by the ownership interest amounts of other parties.
(b)ITCTransmission has a 49.6% joint ownership in 345 kV transmission lines with a municipal power agency.
(c)METC has joint ownership in several assets within various substations and several 345 kV transmission lines with various parties including Consumers Energy. As of December 31, 2021, METC’s ownership percentages for jointly owned substation facilities and lines ranged from less than 1.0% to 92.0% and 1.0% to 41.9%, respectively.
(d)ITC Midwest has joint ownership in several substations and transmission lines with various parties. ITC Midwest’s ownership percentages for jointly owned substation facilities and lines ranged from 28.0% to 80.0% and 11.0% to 80.0%, respectively, as of December 31, 2021. In addition to the jointly held plant in-service, ITC Midwest has $71 million of construction work in progress for jointly held plant in the consolidated statements of financial position as of December 31, 2021.
(e)ITC Great Plains has a 51.0% joint ownership in a transmission project with an electric cooperative.

v3.22.0.1

RELATED PARTY TRANSACTIONS
12 Months Ended

Dec. 31, 2021

Related Party Transactions [Abstract]

Related Party Transactions Disclosure [Text Block] RELATED PARTY TRANSACTIONS
Intercompany Receivables and Payables
ITC Holdings may incur charges from Fortis and other subsidiaries of Fortis that are not subsidiaries of ITC Holdings for general corporate expenses incurred. In addition, ITC Holdings may perform additional services for, or receive additional services from, Fortis and such subsidiaries. These transactions are in the normal course of
business and payments for these services are settled through accounts receivable and accounts payable, as necessary. We had intercompany receivables from Fortis and such subsidiaries of $2 million and less than $1 million at December 31, 2021 and December 31, 2020, respectively, and intercompany payables to Fortis and such subsidiaries of less than $1 million at December 31, 2021 and December 31, 2020.
Related party charges for corporate expenses from Fortis and such subsidiaries are recorded in general and administrative expense. ITC Holdings had such expense for the years ended December 31, 2021, 2020 and 2019 of $10 million. Related party billings for services to Fortis and other subsidiaries recorded as an offset to general and administrative expenses for ITC Holdings were $2 million for each of the years ended December 31, 2021 and 2020, and less than $1 million for the year ended December 31, 2019.
Dividends
We paid dividends of $232 million, $330 million and $250 million during the years ended December 31, 2021, 2020 and 2019, respectively, to ITC Investment Holdings. ITC Holdings also paid dividends of $64 million to ITC Investment Holdings in January 2022.
Transfer of Membership Interests
In February 2021, we transferred our membership interests in certain wholly-owned development entities to our parent company, ITC Investment Holdings. The transfer was accounted for at book value as a non-reciprocal transfer of value. There was no gain or loss recognized on the transfer. The transfer did not have a material impact on our consolidated financial condition, results of operations or cash flows.
Intercompany Tax Sharing Agreement
We are organized as a corporation for tax purposes and subject to a tax sharing agreement as a wholly-owned subsidiary of ITC Investment Holdings. Additionally, we record income taxes based on our separate company tax position and make or receive tax-related payments with ITC Investment Holdings. During the year ended December 31, 2021, we did not make or receive any tax-related payments with ITC Investment Holdings. During year ended December 31, 2020, we paid $2 million to ITC Investment Holdings for matters related to the State of Michigan income taxes. During the year ended December 31, 2019 we did not make or receive any tax-related payments with ITC Investment Holdings.
During each of the years ended December 31, 2020 and 2019, we received a payment of $2 million from FortisUS for a tax refund that originated prior to establishing the tax sharing agreement.

v3.22.0.1

COMMITMENTS AND CONTINGENT LIABILITIES
12 Months Ended

Dec. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENT LIABILITIES COMMITMENTS AND CONTINGENT LIABILITIES
Environmental Matters
We are subject to federal, state and local environmental laws and regulations, which impose limitations on the discharge of pollutants into the environment, require reporting of emissions from certain equipment, establish standards for the management, treatment, storage, transportation and disposal of hazardous materials and of solid and hazardous wastes, and impose obligations to investigate and remediate contamination in certain circumstances. Liabilities relating to investigation and remediation of contamination, as well as other liabilities concerning hazardous materials or contamination, such as claims for personal injury or property damage, may arise at many locations, including formerly owned or operated properties and sites where wastes have been treated or disposed of, as well as properties currently owned or operated by us. Such liabilities may arise even where the contamination does not result from noncompliance with applicable environmental laws. Under some environmental laws, such liabilities may also be joint and several, meaning that a party can be held responsible for more than its share of the liability involved, or even the entire share. Although environmental requirements generally have become more stringent and compliance with those requirements more expensive, we are not aware of any specific developments that would increase our costs for such compliance in a manner that would be expected to have a material adverse effect on our financial condition, results of operations or liquidity.
Our assets and operations also involve the use of materials classified as hazardous, toxic or otherwise dangerous. Some of the properties that we own or operate have been used for many years and include older facilities and equipment that may be more likely than newer ones to contain or be made from such materials. Some of these properties include above ground or underground storage tanks and associated piping. Some of them also include large electrical equipment filled with mineral oil, which may contain or previously have
contained PCBs. Some of our facilities and electrical equipment may also contain asbestos containing materials. Our facilities and equipment are often situated close to or on property owned by others so that, if they are the source of contamination, the property of others may be affected. For example, above ground and underground transmission lines sometimes traverse properties that we do not own and transmission assets that we own or operate are sometimes commingled at our transmission stations with distribution assets owned or operated by our transmission customers.
Some properties in which we have an ownership interest or at which we operate are, or are suspected of being, affected by environmental contamination. We are not aware of any pending or threatened claims against us with respect to environmental contamination relating to these properties, or of any investigation or remediation of contamination at these properties, that entail costs likely to materially affect us. Some facilities and properties are located near environmentally sensitive areas, including wetlands and habitat for threatened and endangered species.
Litigation
We are involved in certain legal proceedings before various courts, governmental agencies and mediation panels concerning matters arising in the ordinary course of business. These proceedings include certain contract disputes, eminent domain and vegetation management activities, regulatory matters and pending judicial matters. We cannot predict the final disposition of such proceedings. We regularly review legal matters and record provisions for claims that are considered probable of loss.
Rate of Return on Equity Complaints
Two complaints were filed with the FERC by combinations of consumer advocates, consumer groups, municipal parties and other parties challenging the base ROE in MISO. The complaints were filed with the FERC under Section 206 of the FPA requesting that the FERC find the MISO regional base ROE rate (the “base ROE”) for all MISO TO’s, including our MISO Regulated Operating Subsidiaries, to no longer be just and reasonable.
Initial Complaint
On November 12, 2013, the Association of Businesses Advocating Tariff Equity, Coalition of MISO Transmission Customers, Illinois Industrial Energy Consumers, Indiana Industrial Energy Consumers, Inc., Minnesota Large Industrial Group and Wisconsin Industrial Energy Group (collectively, the “complainants”) filed the Initial Complaint with the FERC. The complainants sought a FERC order to reduce the base ROE used in the formula transmission rates for our MISO Regulated Operating Subsidiaries to 9.15%, reducing the equity component of our capital structure and terminating the ROE adders approved for certain Regulated Operating Subsidiaries. The FERC set the base ROE for hearing and settlement procedures, while denying all other aspects of the Initial Complaint. The ROE collected through the MISO Regulated Operating Subsidiaries’ rates during the period November 12, 2013 through September 27, 2016 consisted of a base ROE of 12.38% plus applicable incentive adders.
On September 28, 2016, the FERC issued the September 2016 Order that set the base ROE at 10.32%, with a maximum ROE of 11.35%, effective for the period from November 12, 2013 through February 11, 2015 based on a two-step DCF methodology adopted in previous complaint matters for other utilities. The September 2016 Order required our MISO Regulated Operating Subsidiaries to provide refunds, including interest, which were completed in 2017. Additionally, the base ROE established by the September 2016 Order was to be used prospectively from the date of that order until a new approved base ROE was established by the FERC. On October 28, 2016, the MISO TOs, including our MISO Regulated Operating Subsidiaries, filed a request with the FERC for rehearing of the September 2016 Order regarding the short-term growth projections in the two-step DCF analysis. Additional impacts to the base ROE for the period of the Initial Complaint and the related accrued refund liabilities resulted from the November 2019 Order and May 2020 Order issued by the FERC, as discussed below.
Second Complaint
On February 12, 2015, the Second Complaint was filed with the FERC by Arkansas Electric Cooperative Corporation, Mississippi Delta Energy Agency, Clarksdale Public Utilities Commission, Public Service Commission of Yazoo City and Hoosier Energy Rural Electric Cooperative, Inc., seeking a FERC order to
reduce the base ROE used in the formula transmission rates of our MISO Regulated Operating Subsidiaries to 8.67%, with an effective date of February 12, 2015.
On June 30, 2016, the presiding ALJ issued an initial decision that recommended a base ROE of 9.70% for the refund period from February 12, 2015 through May 11, 2016, with a maximum ROE of 10.68%, which also would be applicable going forward from the date of a final FERC order. The Second Complaint was dismissed as a result of the November 2019 Order and the dismissal of the complaint was reaffirmed in the May 2020 Order, as discussed below.
November 2019 Order
On November 21, 2019, the FERC issued an order in the MISO ROE Complaints which applied a methodology to the Initial Complaint period that used two financial models to determine the base ROE. The FERC determined that the base ROE for the Initial Complaint should be 9.88% and the top of the range of reasonableness for that period should be 12.24% and that this base ROE should apply during the first refund period of November 12, 2013 to February 11, 2015 and from the date of the September 2016 Order prospectively. In the November 2019 Order, the FERC also dismissed the Second Complaint. Therefore, based on the November 2019 Order, for the Second Complaint refund period from February 12, 2015 to May 11, 2016, no refund is due. As a result, in 2019, we reversed the aggregate estimated current liability we had previously recorded for the Second Complaint. In addition, for the period from May 12, 2016 to September 27, 2016, no refund is due because no complaint had been filed for that period. The FERC ordered refunds to be made in accordance with the November 2019 Order. The MISO TOs, including our MISO Regulated Operating Subsidiaries, and several other parties filed requests for rehearing of the November 2019 Order. The MISO TOs asserted that the methodology applied by the FERC in the November 2019 Order does not allow the MISO TOs to earn a reasonable rate of return on their investment, as required by precedent. On January 21, 2020, the FERC issued an order granting rehearing of the November 2019 Order for further consideration.
May 2020 Order
On May 21, 2020, the FERC issued an order on rehearing of the November 2019 Order. In this order, the FERC revised its November 2019 Order methodology, finding that three financial models should be used to determine the base ROE, among other revisions. By applying the new methodology, the FERC determined that the base ROE for the Initial Complaint should be 10.02% and the top of the range of reasonableness for that period should be 12.62%. The FERC determined that this base ROE should apply during the first refund period of November 12, 2013 to February 11, 2015 and from the date of the September 2016 Order prospectively. The FERC ordered refunds to be made in accordance with the May 2020 Order by December 23, 2020. On October 8, 2020, the FERC granted an extension to September 23, 2021 and on August 2, 2021 the FERC granted a second extension to February 28, 2022. On December 16, 2021, MISO requested a third extension to May 31, 2022, and that remains pending. In the May 2020 Order, the FERC also reaffirmed its decision to dismiss the Second Complaint and its finding that no refunds would be ordered on the Second Complaint. Our MISO Regulated Operating Subsidiaries are parties to multiple appeals of the September 2016 Order, November 2019 Order and May 2020 Order at the D.C. Circuit Court.
Financial Statement Impacts
As of December 31, 2021, we had recorded an aggregate current regulatory asset and liability of $1 million and less than $1 million, respectively, and as of December 31, 2020, we had recorded an aggregate current regulatory asset and liability of $8 million and $13 million, respectively, in the consolidated statements of financial position. These impacts reflect amounts owed from or due to customers under the terms outlined in the May 2020 Order and the November 2019 Order on the Initial Complaint and the periods subsequent to the September 2016 Order. During the year ended December 31, 2021, we refunded net settlement payments of $5 million due to customers related to this ROE matter and during the year ended December 31, 2020, we refunded net settlement payments of $31 million due to customers related to this ROE matter.
Although the November 2019 Order and May 2020 Order dismissed the Second Complaint with no refunds required, it is possible upon resolution of the pending appeals that our MISO Regulated Operating Subsidiaries could be required to provide material refunds related to the Second Complaint.
Our MISO Regulated Operating Subsidiaries currently record revenues at the base ROE of 10.02% established in the May 2020 Order plus applicable incentive adders. See Note 5 for a summary of incentive adders for transmission rates.
The recognition of the obligations associated with the MISO ROE Complaints resulted in the following impacts to the consolidated statements of comprehensive income:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Revenue increase $ — $ 32 $ 69
Interest expense decrease — (3) (12)
Estimated net income increase — 25 61
As of December 31, 2021, our MISO Regulated Operating Subsidiaries had a total of approximately $5 billion of equity in their collective capital structures for ratemaking purposes. Based on this level of aggregate equity, we estimate that each 10 basis point change in the authorized ROE would impact annual consolidated net income by approximately $5 million.
Purchase Obligations
At December 31, 2021, we had purchase obligations of $126 million representing commitments for materials, services and equipment that had not been received as of December 31, 2021, primarily for construction and maintenance projects for which we have an executed contract. Of these purchase obligations, $107 million is expected to be paid in 2022, with the majority of the items related to materials and equipment that have long production lead times.
Other Commitments
METC
Amended and Restated Purchase and Sale Agreement for Ancillary Services. Since METC does not own any generating facilities, it must procure ancillary services from third party suppliers, such as Consumers Energy. Currently, under the Ancillary Services Agreement, METC pays Consumers Energy for providing certain generation-based services necessary to support the reliable operation of the bulk power grid, such as voltage support and generation capability and capacity to balance loads and generation.
Amended and Restated Easement Agreement. Under the Easement Agreement, Consumers Energy provides METC with an easement to the land on which a majority of METC’s transmission towers, poles, lines and other transmission facilities used to transmit electricity for Consumers Energy and others are located. The term of the Easement Agreement runs through December 31, 2050 and is subject to 10 automatic 50-year renewals thereafter unless METC gives notice of nonrenewal at least one year in advance. METC pays Consumers Energy $10 million in annual rent per year for the easement and also pays for any rentals, property, taxes, and other fees related to the property covered by the Easement Agreement. Payments to Consumers Energy under the Easement Agreement are charged to operation and maintenance expenses.
ITC Midwest
Operations Services Agreement For 34.5 kV Transmission Facilities. ITC Midwest and IP&L entered into the OSA under which IP&L performs certain operations functions for ITC Midwest’s 34.5 kV transmission system. The OSA provides that when ITC Midwest upgrades 34.5 kV facilities to higher operating voltages it may notify IP&L of the change and the OSA is no longer applicable to those facilities.
ITC Great Plains
Amended and Restated Maintenance Agreement. Mid-Kansas and ITC Great Plains have entered into the Mid-Kansas Agreement pursuant to which Mid-Kansas has agreed to perform various field operations and maintenance services related to certain ITC Great Plains assets.
Concentration of Credit Risk
Our credit risk is primarily with DTE Electric, Consumers Energy and IP&L, which were responsible for approximately 21.5%, 23.5% and 24.7%, respectively, or $300 million, $327 million and $344 million,
respectively, of our consolidated billed revenues for the year ended December 31, 2021. This portion of total billed revenues of DTE Electric, Consumers Energy and IP&L include the collection of 2019 revenue accruals and deferrals and exclude any amounts for the 2021 revenue accruals and deferrals that were included in our 2021 operating revenues but will not be billed to our customers until 2023. Under DTE Electric’s and Consumers Energy’s current rate structure, DTE Electric and Consumers Energy include in their retail rates the actual cost of transmission services provided by ITCTransmission and METC, respectively, in their billings to their customers, effectively passing through to end-use consumers the total cost of transmission service. IP&L currently includes in their retail rates an allowance for transmission services provided by ITC Midwest in their billings to their customers. However, any financial difficulties experienced by DTE Electric, Consumers Energy or IP&L may affect their ability to make payments for transmission service to ITCTransmission, METC, and ITC Midwest, which could negatively impact our business. MISO, as our MISO Regulated Operating Subsidiaries’ billing agent, bills DTE Electric, Consumers Energy, IP&L and other customers on a monthly basis and collects fees for the use of the MISO Regulated Operating Subsidiaries’ transmission systems. SPP is the billing agent for ITC Great Plains and bills transmission customers for the use of ITC Great Plains transmission systems. MISO and SPP have implemented strict credit policies for its members’ customers, which include customers using our transmission systems. Specifically, MISO and SPP require a letter of credit or cash deposit equal to the credit exposure, which is determined by a credit scoring model and other factors, from any customer using a member’s transmission system.
The financial results of ITC Interconnection are currently not material to our consolidated financial statements, including billed revenues.

v3.22.0.1

SEGMENT INFORMATION
12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

SEGMENT INFORMATION SEGMENT INFORMATION
We identify reportable segments based on the criteria set forth by the FASB regarding disclosures about segments of an enterprise, including the regulatory environment of our subsidiaries and the business activities performed to earn revenues and incur expenses.
Regulated Operating Subsidiaries
We aggregate ITCTransmission, METC, ITC Midwest, ITC Great Plains and ITC Interconnection into one reportable operating segment based on their similar regulatory environment and economic characteristics, among other factors. They are engaged in the transmission of electricity within the United States, earn revenues from the same types of customers and are regulated by the FERC.
ITC Holdings and Other
Information below for ITC Holdings and Other consists primarily of a holding company whose activities include debt financings and general corporate activities. The other subsidiaries of ITC Holdings, excluding the Regulated Operating Subsidiaries, do not have significant operations.
Regulated
Operating ITC Holdings Reconciliations/
2021 Subsidiaries and Other Eliminations Total
(In millions of USD)
Operating revenues $ 1,386 $ 1 $ (38) $ 1,349
Depreciation and amortization 231 1 — 232
Interest expense, net 123 129 (1) 251
Income (loss) before income taxes 691 (158) — 533
Income tax provision (benefit) 173 (46) — 127
Net income 518 406 (518) 406
Property, plant and equipment, net 9,954 7 — 9,961
Goodwill 950 — — 950
Total assets (a) 11,317 6,134 (6,006) 11,445
Capital expenditures 841 — (7) 834
Regulated
Operating ITC Holdings Reconciliations/
2020 Subsidiaries and Other Eliminations Total
(In millions of USD)
Operating revenues $ 1,333 $ 1 $ (36) $ 1,298
Depreciation and amortization 218 1 — 219
Interest expense, net 118 122 — 240
Income (loss) before income taxes 683 (140) — 543
Income tax provision (benefit) 179 (43) — 136
Net income 504 407 (504) 407
Property, plant and equipment, net 9,319 8 — 9,327
Goodwill 950 — — 950
Total assets (a) 10,710 5,830 (5,715) 10,825
Capital expenditures 886 — (1) 885
Regulated
Operating ITC Holdings Reconciliations/
2019 Subsidiaries and Other Eliminations Total
(In millions of USD)
Operating revenues $ 1,358 $ — $ (31) $ 1,327
Depreciation and amortization 201 2 — 203
Interest expense, net 105 119 — 224
Income (loss) before income taxes 710 (150) — 560
Income tax provision (benefit) 179 (47) — 132
Net income 531 428 (531) 428
Property, plant and equipment, net 8,573 9 — 8,582
Goodwill 950 — — 950
Total assets (a) 9,946 5,402 (5,290) 10,058
Capital expenditures 874 — (9) 865
____________________________
(a)Reconciliation of total assets results primarily from differences in the netting of deferred tax assets and liabilities in our segments as compared to the classification in our consolidated statements of financial position.

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT
12 Months Ended

Dec. 31, 2021

Condensed Financial Information Disclosure [Abstract]

Condensed Financial Information of Parent Company Only Disclosure
ITC HOLDINGS CORP.
CONDENSED STATEMENTS OF FINANCIAL POSITION (PARENT COMPANY ONLY)
December 31,
(In millions of USD, except share data) 2021 2020
ASSETS
Current assets
Cash and cash equivalents $ 3 $ 2
Accounts receivable from subsidiaries 20 9
Intercompany tax receivable from subsidiaries 16 8
Prepaid and other current assets 3 —
Advances to subsidiaries 50 —
Total current assets 92 19
Other assets
Investment in subsidiaries 5,784 5,496
Deferred income taxes 142 160
Advances to subsidiaries 4 54
Other assets 112 101
Total other assets 6,042 5,811
TOTAL ASSETS $ 6,134 $ 5,830
LIABILITIES AND STOCKHOLDER’S EQUITY
Current liabilities
Accrued compensation $ 72 $ 55
Accrued interest 23 23
Debt maturing within one year 654 67
Other current liabilities 8 8
Total current liabilities 757 153
Accrued pension and postretirement liabilities 52 59
Other liabilities 78 58
Long-term debt (net of deferred financing fees and discount of $17 and $21, respectively)
2,773 3,266
TOTAL LIABILITIES 3,660 3,536
STOCKHOLDER’S EQUITY
Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December 31, 2021 and 2020 892 892
Retained earnings 1,584 1,410
Accumulated other comprehensive loss (2) (8)
Total stockholder’s equity 2,474 2,294
TOTAL LIABILITIES AND STOCKHOLDER’S EQUITY $ 6,134 $ 5,830
See notes to condensed financial statements (parent company only).
SCHEDULE I — Condensed Financial Information of Registrant
ITC HOLDINGS CORP.
CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (PARENT COMPANY ONLY)
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Other income (expense), net $ 3 $ 5 $ 5
General and administrative expense (30) (20) (25)
Taxes other than income taxes (2) (1) (2)
Interest expense (129) (122) (119)
LOSS BEFORE INCOME TAXES (158) (138) (141)
INCOME TAX BENEFIT (46) (43) (44)
LOSS AFTER TAXES (112) (95) (97)
EQUITY IN SUBSIDIARIES’ NET EARNINGS 518 502 525
NET INCOME 406 407 428
OTHER COMPREHENSIVE INCOME (LOSS)
Derivative instruments (net of tax of $2 for the year ended December 31, 2021, $7 for the year ended December 31, 2020, $1 for the year ended December 31, 2019 6 (15) 3
TOTAL OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX 6 (15) 3
TOTAL COMPREHENSIVE INCOME $ 412 $ 392 $ 431
See notes to condensed financial statements (parent company only).
SCHEDULE I — Condensed Financial Information of Registrant
ITC HOLDINGS CORP.
CONDENSED STATEMENTS OF CASH FLOWS (PARENT COMPANY ONLY)
Year Ended December 31,
(In millions of USD) 2021 2020 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income $ 406 $ 407 $ 428
Adjustments to reconcile net income to net cash used in operating activities:
Equity in subsidiaries' earnings (518) (502) (525)
Dividends from subsidiaries 10 3 3
Deferred and other income taxes (41) (46) (51)
Net intercompany tax payments from (to) subsidiaries 56 33 14
Share-based compensation 25 15 18
Other 4 2 6
Changes in assets and liabilities, exclusive of changes shown separately:
Accounts receivable from subsidiaries (2) 9 9
Intercompany tax receivable from subsidiaries (9) (4) 11
Income tax receivable — — 1
Accrued compensation 4 (12) 22
Other current and non-current assets and liabilities, net (2) (3) —
Net cash used in operating activities (67) (98) (64)
CASH FLOWS FROM INVESTING ACTIVITIES
Equity contributions to subsidiaries (51) (88) (120)
Return of capital from subsidiaries 259 228 239
Advances to subsidiaries — (50) —
Other 1 (2) (1)
Net cash provided by investing activities 209 88 118
CASH FLOWS FROM FINANCING ACTIVITIES
Issuance of long-term debt — 700 —
Borrowings under revolving credit agreement 93 293 72
Borrowings under term loan credit agreements — 200 200
Net issuance of commercial paper 88 (133) 200
Retirement of long-term debt — including extinguishment of debt costs — — (203)
Repayments of revolving credit agreement (91) (290) (75)
Repayments of term loan credit agreement — (400) —
Dividends to ITC Investment Holdings (232) (330) (250)
Settlement of interest rate swaps — (23) —
Other 1 (7) —
Net cash provided by (used in) financing activities (141) 10 (56)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 1 — (2)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — Beginning of period 2 2 4
CASH, CASH EQUIVALENTS AND RESTRICTED CASH — End of period $ 3 $ 2 $ 2
See notes to condensed financial statements (parent company only).
GENERAL
For ITC Holdings Corp.’s (“ITC Holdings,” “we,” “our” and “us”) presentation (Parent Company only), the investment in subsidiaries is accounted for using the equity method. The condensed parent company financial statements and notes should be read in conjunction with the consolidated financial statements and notes of ITC Holdings appearing in this Annual Report on Form 10-K. Certain prior period amounts in the financial statements and notes have been reclassified to conform to the current period presentation for comparative purposes.
As a holding company with no business operations, ITC Holdings’ assets consist primarily of investments in our subsidiaries. ITC Holdings’ material cash inflows are only from dividends and other payments received from our subsidiaries, the proceeds raised from the sale of debt securities, issuances under our commercial paper program and borrowings under our revolving and term loan term credit agreements. ITC Holdings may not be able to access cash generated by our subsidiaries in order to fulfill cash commitments. The ability of our subsidiaries to make dividend and other payments to us is subject to the availability of funds after taking into account their respective funding requirements, the terms of their respective indebtedness, the regulations of the FERC under the FPA and applicable state laws. In addition, there are practical limitations on using the net assets of each of our Regulated Operating Subsidiaries as of December 31, 2021 for dividends based on management's intent to maintain the FERC-approved capital structure targeting 60% equity and 40% debt for each of our Regulated Operating Subsidiaries. These net assets are included in Schedule I as the line-item “Investments in subsidiaries.” Each of our subsidiaries, however, is legally distinct from us and has no obligation, contingent or otherwise, to make funds available to us.
Recent Developments Regarding the COVID-19 Pandemic
In March 2020, the World Health Organization declared COVID-19 a pandemic. Efforts to control the outbreak of COVID-19 have resulted in challenges to businesses and facilities in various industries around the world, including our customers, and disruptions to the global economy and supply chains. To date, COVID-19 has not had a material impact on our net income. However, for 2020, we utilized various temporary cost saving measures related to operating expenses, including operation and maintenance expenses and general and administrative expenses, in an attempt to reduce costs for our customers that were collected through our Formula Rates.
We are unable to predict the ultimate effects of COVID-19 on the U.S. or global economy or our operations. We continue to monitor developments affecting our workforce, customers, suppliers, and operations. The extent of the impact of COVID-19 will depend on its duration, actions by government authorities, and impacts on our customers, employees, or vendors. These developments are continuously evolving, and we cannot predict whether COVID-19 will have a material impact on our financial condition, results of operations or cash flows.
DEBT
As of December 31, 2021, the maturities of our debt outstanding were as follows:
(In millions of USD)
2022 $ 655
2023 250
2024 439
2025 —
2026 400
2027 and thereafter 1,700
Total $ 3,444
Refer to Note 9 to the consolidated financial statements for additional information on the ITC Holdings Senior Notes, the ITC Holdings Revolving Credit Agreements, the ITC Holdings Commercial Paper Program and the ITC Holdings Derivative Instruments and Hedging Activities.
Fixed Rate Debt
Based on the borrowing rates obtained from third party lending institutions currently available for bank loans with similar terms and average maturities from active markets, the fair value of the ITC Holdings Senior Notes was $3,516 million and $3,670 million at December 31, 2021 and 2020, respectively. The total book value of the ITC Holdings Senior Notes, net of discount and deferred financing fees, was $3,233 million and $3,229 million at December 31, 2021 and 2020, respectively. The fair values of the ITC Holdings Senior Notes represent Level 2 under the three-tier hierarchy described in Note 12 to the consolidated financial statements.
Revolving Credit Agreements
At December 31, 2021 and 2020, we had $39 million and $37 million, respectively, outstanding under our revolving credit agreements, which are variable rate loans. The fair value of these loans approximates book value based on the borrowing rates currently available for variable rate loans obtained from third party lending institutions. The fair values of the revolving credit agreements represent Level 2 under the three-tier hierarchy described in Note 12 to the consolidated financial statements.
Other Financial Instruments
The carrying value of other financial instruments included in current assets and current liabilities, including cash and cash equivalents, special deposits and commercial paper, approximates their fair value due to the short-term nature of these instruments.
RELATED-PARTY TRANSACTIONS
Net Intercompany Receivables and Payables
We may incur charges from our subsidiaries for general corporate expenses incurred. In addition, we may perform additional services for, or receive additional services from our subsidiaries. These transactions are in the normal course of business and payments for these services are settled through accounts receivable and accounts payable, as necessary. We generally settle our intercompany balances with our affiliates on a net basis monthly.
Retirement Benefits
We are the plan sponsor for a pension plan, other postretirement plans and a defined contribution plan. The benefits-related expenses recorded by our affiliates result from the inclusion of benefit costs as a component of the total charge for services performed by our employees under the cost assignment and allocation methods used by us and our subsidiaries.
Equity Transactions
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Equity contributions to subsidiaries $ (51) $ (88) $ (120)
Dividends from subsidiaries (a) 10 3 3
Return of capital from subsidiaries (a) 259 228 239
____________________________
(a)Includes ITCTransmission, MTH, ITC Midwest and other subsidiaries.
Intercompany Tax Sharing Arrangement
As discussed in Note 1 to the condensed financial statements of the parent company, we are a holding company with no business operations. We file consolidated income tax returns that include our affiliates, which are taxed as a corporation for federal and Michigan income tax purposes. We operate under an intercompany tax sharing arrangement with our subsidiaries and as a result may receive or pay federal and state income tax based on their stand-alone company tax positions.
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Net income tax payments (to) from: (a)
ITCTransmission $ 24 $ 17 $ 7
METC 15 9 4
ITC Midwest 10 1 3
ITC Great Plains 6 6 (1)
ITC Interconnection 1 — 1
____________________________
(a)The net income tax payments were pursuant to intercompany tax sharing arrangements, and the total of these tax payments is presented as a net cash outflow or inflow from operating activities in the condensed parent company statements of cash flows. Other reconciling items between the parent company and the consolidated tax liabilities are presented as deferred and other income taxes in the adjustments to reconcile net income to net cash provided by operating activities. Additionally, ITC Holdings paid its subsidiaries for NOLs utilized by the consolidated group.
Intercompany Loan Agreement
On September 21, 2020, we advanced an intercompany loan to ITCTransmission totaling $50 million, due September 21, 2022, which remained outstanding at December 31, 2021. On January 14, 2022, ITCTransmission repaid the intercompany loan in full with proceeds from the issuance of First Mortgage Bonds on January 14, 2022. We received interest payments of $1 million during the year ended December 31, 2021 from ITCTransmission associated with this intercompany loan. Additionally, at December 31, 2021 we had a $4 million intercompany loan with ITC Interconnection, due June 1, 2046. During the year ended December 31, 2021, we received principal and interest payments of $1 million from ITC Interconnection associated with this intercompany loan.
SUPPLEMENTAL FINANCIAL INFORMATION
Reconciliation of Cash, Cash Equivalents and Restricted Cash
The following table provides a reconciliation of cash, cash equivalents and restricted cash reported on the condensed statements of financial position that sum to the total of the same such amounts shown in the condensed statements of cash flows:
December 31,
(In millions of USD) 2021 2020 2019 2018
Cash and cash equivalents $ 3 $ 2 $ 2 $ 3
Restricted cash included in:
Other non-current assets — — — 1
Total cash, cash equivalents and restricted cash $ 3 $ 2 $ 2 $ 4
Supplementary Cash Flows Information
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Supplementary cash flows information:
Interest paid $ 119 $ 116 $ 117
Income taxes paid — 2 —
Income tax refunds received — 2 3

v3.22.0.1

SIGNIFICANT ACCOUNTING POLICIES (Policies)
12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Principles of Consolidation ITC Holdings consolidates its majority owned subsidiaries. We eliminate all intercompany balances and transactions.

Use of Estimates The preparation of the consolidated financial statements requires us to use estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results may differ from our estimates.

Regulation Our Regulated Operating Subsidiaries are subject to the regulatory jurisdiction of the FERC, which issues orders pertaining to rates, recovery of certain costs, including the costs of transmission assets and regulatory assets, conditions of service, accounting, financing authorization and operating-related matters. The utility operations of our Regulated Operating Subsidiaries meet the accounting standards set forth by the FASB for the accounting effects of certain types of regulation. These accounting standards recognize the cost-based rate setting process, which results in differences in the application of GAAP between regulated and non-regulated businesses. These standards require the recording of regulatory assets and liabilities for certain transactions that would have been recorded as revenue and expense in non-regulated businesses. Regulatory assets represent costs that will be included as a component of future tariff rates and regulatory liabilities represent amounts provided in the current tariff rates that are intended to recover costs expected to be incurred in the future or amounts to be refunded to customers.

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents We consider all unrestricted highly-liquid temporary investments with an original maturity of three months or less at the date of purchase to be cash equivalents.Restricted Cash and Restricted Cash Equivalents — Restricted cash and restricted cash equivalents include cash and cash equivalents that are legally or contractually restricted for use or withdrawal or are formally set aside for a specific purpose.

Accounts Receivables We recognize losses for uncollectible accounts based on the current expected credit loss model. As of December 31, 2021, 2020 and 2019 we did not have an accounts receivable reserve.

Inventories Materials and supplies inventories are valued at average cost. Additionally, the costs of warehousing activities are recorded here and included in the cost of materials when requisitioned.

Property, Plant and Equipment
Property, plant and equipment in service at our Regulated Operating Subsidiaries is stated at its original cost when first devoted to utility service. The gross book value of assets retired less salvage proceeds is charged to accumulated depreciation. The provision for depreciation of transmission assets is a significant component of our Regulated Operating Subsidiaries’ cost of service under FERC-approved rates. Periodically we perform depreciation studies of the assets at our Regulated Operating Subsidiaries. The results of these studies are submitted to, and require approval from the FERC prior to changing our depreciation rates. Depreciation is computed over the estimated useful lives of the assets using the straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes. The composite depreciation rate for our Regulated Operating Subsidiaries included in our consolidated statements of comprehensive income was 2.0% for 2021, 2020 and 2019. The composite depreciation rates include depreciation primarily on transmission station equipment, towers, poles and overhead and underground lines that have a useful life ranging from 45 to 60 years. The portion of depreciation expense related to asset removal costs is added to regulatory liabilities or deducted from regulatory assets and removal costs incurred are deducted from regulatory liabilities or added to regulatory assets. Certain of our Regulated Operating Subsidiaries capitalize to property, plant and equipment AFUDC in accordance with FERC regulations. AFUDC represents the composite cost incurred to fund the construction of assets, including interest expense and a return on equity capital devoted to construction of assets. The interest component of AFUDC was a reduction to interest expense of $8 million, $7 million and $8 million for 2021, 2020 and 2019, respectively.
For acquisitions of property, plant and equipment greater than the net book value (other than asset acquisitions accounted for under the purchase method of accounting that result in goodwill), the acquisition premium is recorded to property, plant and equipment and amortized over the estimated remaining useful lives of the assets using the straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes.
Property, plant and equipment includes capital equipment inventory stated at original cost consisting of items that are expected to be used exclusively for capital projects.
Property, plant and equipment at our non-regulated subsidiaries is stated at its acquired cost. Proceeds from salvage less the net book value of the disposed assets is recognized as a gain or loss on disposal. Depreciation is computed based on the acquired cost less expected residual value and is recognized over the estimated useful lives of the assets on a straight-line method for financial reporting purposes and accelerated methods for income tax reporting purposes.

General Interconnection Projects and Contributions in Aid of Construction Certain capital investment at our Regulated Operating Subsidiaries relates to investments made under GIAs. The GIAs typically consist of both transmission network upgrades, which are a category of upgrades deemed by the FERC to benefit the transmission system as a whole, as well as direct connection facilities, which are necessary to interconnect the generating facility to the transmission system and primarily benefit the
generating facility. As a result, GIAs typically require the generator to make a contribution in aid of construction to our Regulated Operating Subsidiaries to cover the cost of certain investments made by us as part of the agreement.
Our investments in transmission facilities are recorded to property, plant and equipment, and are recorded net of any contribution in aid of construction. We also receive refundable deposits from the generator for certain investment in network upgrade facilities in advance of construction, which are recorded to current or non-current liabilities depending on the expected refund date.
Jointly Owned Utility Plant/Coordinated Services — Certain of our Regulated Operating Subsidiaries have agreements with other utilities for the joint ownership of substation assets and transmission lines as described in Note 15. We account for these jointly owned assets by recording property, plant and equipment for the percentage of our undivided ownership interest. Various agreements provide the authority for construction of capital improvements and the operating costs associated with the substations and lines. Generally, each party is responsible for the capital, operation and maintenance and other costs of these jointly owned facilities based upon each participant’s undivided ownership interest, and each participant is responsible for providing its own financing. Our participating share of expenses associated with these jointly held assets are primarily recorded within operation and maintenance expenses on our consolidated statements of comprehensive income.

Available-For-Sale Securities We have certain investments in mutual funds, including fixed income securities and equity securities that are classified as fair value through net income. The fixed income security investments primarily fund our two supplemental nonqualified, noncontributory, retirement benefit plans for selected management employees as described in Note 11. Gains and losses associated with our mutual funds as described in Note 12 are recorded in earnings.

Impairment of Long-Lived Assets Other than goodwill, our long-lived assets are reviewed for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. If the carrying amount of the asset exceeds the expected undiscounted future cash flows generated by the asset, the asset is written down to its estimated fair value and an impairment loss is recognized in our consolidated statements of comprehensive income.

Goodwill Goodwill is not subject to amortization; however, goodwill is required to be assessed for impairment, and a resulting write-down, if any, is to be reflected in operating expense. We have goodwill recorded relating to our acquisitions of ITCTransmission and METC, and ITC Midwest’s acquisition of the IP&L transmission assets. Goodwill is reviewed at the reporting unit level at least annually for impairment and whenever facts or circumstances indicate that the value of goodwill may be impaired. Our reporting units are ITCTransmission, METC and ITC Midwest as each entity represents an individual operating segment to which goodwill has been assigned. At December 31, 2021 and 2020, we had goodwill balances recorded at ITCTransmission, METC and ITC Midwest of $173 million, $454 million and $323 million, respectively.
In order to perform an impairment analysis, we have the option of performing a qualitative assessment to determine whether the existence of events or circumstances leads to a determination that it is more likely than not that the fair value of a reporting unit is greater than its carrying amount, in which case no further testing is required. If an entity bypasses the qualitative assessment or performs a qualitative assessment but determines that it is more likely than not that a reporting unit’s fair value is less than its carrying amount, a quantitative, fair value-based test is performed to assess and measure goodwill impairment, if any. If a quantitative assessment is performed, we determine the fair value of our reporting units using valuation techniques based on discounted future cash flows under various scenarios and consider estimates of market-based valuation multiples for companies within the peer group of our reporting units.
We completed our annual goodwill impairment test for our reporting units as of October 1, 2021 and determined that no impairment exists. There were no events subsequent to October 1, 2021 that indicated impairment of our goodwill. Our intangible assets other than goodwill have finite lives and are amortized over their useful lives. Refer to Note 8 for additional discussion on our intangible assets.

Deferred Financing Fees and Discount or Premium On Debt Costs related to the issuance of long-term debt are generally recorded as a direct deduction from the carrying amount of the related debt and amortized over the life of the debt. Debt issuance costs incurred prior to the associated debt funding are presented as an asset. Unamortized debt issuance costs associated with the revolving credit agreements, commercial paper and other similar arrangements are presented as an asset (regardless of whether there are any amounts outstanding under those credit facilities) and amortized over the life of the particular arrangement. The debt discount or premium related to the issuance of long-term debt is recorded to long-term debt and amortized over the life of the debt.

Asset Retirement Obligations A conditional asset retirement obligation is a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement are conditional on a future event that may or may not be within our control. We have identified conditional asset retirement obligations primarily associated with the removal of equipment containing PCBs and asbestos. We record a liability at fair value for a legal asset retirement obligation in the period in which it is incurred. When a new legal obligation is recorded, we capitalize the costs of the liability by increasing the carrying amount of the related long-lived asset. We accrete the liability to its present value each period and depreciate the capitalized cost over the useful life of the related asset. At the end of the asset’s useful life, we settle the obligation for its recorded amount. We recognize regulatory assets for the timing differences between the incurred costs to settle our legal asset retirement obligations and the recognition of such obligations as applicable for our Regulated Operating Subsidiaries.

Financial Instruments We may use derivative financial instruments, including interest rate swap contracts, to manage our exposure to fluctuations in interest rates. For derivative instruments that have been designated and qualify as cash flow hedges of the exposure to variability in expected future cash flows, the unrealized gain or loss on the derivative is initially reported, net of tax, as a component of other comprehensive income (loss) and reclassified to the consolidated statements of comprehensive income when the underlying hedged transaction affects net income. Cash flows related to interest rate swaps that are designated in hedging relationships are generally classified on the consolidated statements of cash flows within cash flows from financing activities. The fair values of derivatives are recognized as current or long-term assets and liabilities depending on the timing of settlements and resulting cash flows. Refer to Note 9 for additional discussion regarding derivative instruments.

Contingent Obligations We are subject to a number of federal and state laws and regulations, as well as other factors and conditions that potentially subject us to environmental, litigation, income tax and other contingencies. We periodically evaluate our exposure to such contingencies and record liabilities for those matters where a loss is considered probable and reasonably estimable. We reverse the liabilities recorded for those matters when a loss is no longer considered probable or the liabilities are otherwise settled. Our liabilities exclude any estimates for legal costs not yet incurred associated with handling these matters, which could be material. The adequacy of liabilities recorded can be significantly affected by external events or conditions that can be unpredictable; thus, the ultimate outcome of such matters could materially affect our consolidated financial statements.

Revenues Revenues from the transmission of electricity are recognized as services are provided based on our FERC-approved cost-based Formula Rates. We record a reserve for revenue subject to refund when such refund is probable and can be reasonably estimated. This reserve is recorded as a reduction to operating revenues.The cost-based Formula Rates at our Regulated Operating Subsidiaries include a true-up mechanism that compares the actual revenue requirements of our Regulated Operating Subsidiaries to their billed revenues for each year to determine any over- or under-collection of revenue requirements and we record a revenue deferral or accrual for the difference. The true-up mechanisms under our Formula Rates are considered alternative revenue programs of rate-regulated utilities. Operating revenues arising from these alternative revenue programs are presented on our consolidated statements of comprehensive income in the line “Formula Rate true-up”, which is separate from the reporting of our tariff revenues, which are presented in the line “Transmission and other services.” Only the initial origination of our alternative revenue program revenue is reported in the Formula Rate true-up line on our consolidated statements of comprehensive income. When those amounts are subsequently included in the price of utility service and billed or refunded to customers, we account for that event as the recovery or settlement of the associated regulatory asset or regulatory liability, respectively. Refer to Note 5 under “Cost-Based Formula Rates with True-Up Mechanism” and Note 3 under “Formula Rate True-Up” for a discussion of our revenue accounting under our cost-based Formula Rates.
Transmission Services
Through our Regulated Operating Subsidiaries, we generate nearly all our revenue from providing electric transmission services over our transmission systems. As independent transmission companies, our transmission services are provided and revenues are received based on our tariffs, as approved by the FERC. The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items.
We recognize revenue for transmission services over time as transmission services are provided to customers (generally using an output measure of progress based on transmission load delivered). Customers simultaneously receive and consume the benefits provided by the Regulated Operating Subsidiaries’ services. We recognize revenue in the amount to which we have the right to invoice because we have a right to consideration in an amount that corresponds directly with the value to the customer of performance completed to date. As billing agents, MISO and SPP independently bill our customers on a monthly basis and collects fees for the use of our transmission systems. No component of the transaction price is allocated to unsatisfied performance obligations.
Transmission service revenue includes an estimate for unbilled revenues from service that has been provided but not billed by the end of an accounting period. Unbilled revenues are dependent upon a number of factors that require management’s judgment including estimates of transmission network load (for the MISO Regulated Operating Subsidiaries) and preliminary information provided by billing agents. Due to the seasonal fluctuations of actual load, the unbilled revenue amount generally increases during the spring and summer and decreases during the fall and winter. See Note 4 for information on changes in unbilled accounts receivable.
Other Services
Other services revenue consists of rental revenues, easement revenues, and amounts from providing ancillary services. A portion of other services revenue is treated as a revenue credit and reduces gross revenue requirement when calculating net revenue requirement under our Formula Rates. Total other services revenue was $6 million, $5 million and $7 million for the years ended December 31, 2021, 2020 and 2019, respectively.
Formula Rate True-Up
The true-up mechanism under our Formula Rates is considered an alternative revenue program of a rate-regulated utility given it permits our Regulated Operating Subsidiaries to adjust future rates in response to past activities or completed events in order to collect our actual revenue requirements under our Formula Rates. In accordance with our accounting policy, only the current year origination of the true-up is reported as a Formula Rate true-up. See “Cost-Based Formula Rates with True-Up Mechanism” in Note 5 for more information on our Formula Rates.

Share-based Payment and Employee Share Purchase Plan Under our long-term incentive plans, we grant long-term incentive awards consisting of PBUs and SBUs. Generally, each PBU and SBU granted is valued based on one share of Fortis common stock traded on the Toronto Stock Exchange, converted to U.S. dollars and settled only in cash. However, certain SBUs granted to the executives may settle in cash, 100% Fortis common stock, or 50% cash and 50% Fortis common stock depending on executives’ settlement elections and whether certain share ownership requirements are met. The awards are classified as liability awards and vest on the date specified in the applicable grant agreements, provided the service and performance criteria, as applicable, are satisfied. The PBUs and SBUs earn dividend equivalents which are also re-measured and settled consistent with the target award at the end of the vesting period.Compensation cost is recognized over the expected vesting period and remeasured each reporting period based on Fortis’ stock price. The PBUs are also remeasured each reporting period based on the applicable market and performance conditions in the awards. Compensation cost is adjusted for forfeitures in the period in which they occur and the final measure of compensation cost for the awards is based on the cash settlement amount.

Comprehensive Income (Loss) Comprehensive income (loss) is the change in stockholder’s equity during a period arising from transactions and events from non-owner sources, including net income and any gain or loss arising from our interest rate swaps.

Income Taxes Deferred income taxes are recognized for the expected future tax consequences of events that have been recognized in the consolidated financial statements or tax returns. Deferred income tax assets and liabilities are determined based on the differences between the financial statements and the tax bases of various assets and liabilities, using the tax rates expected to be in effect for the year in which the differences are expected to reverse, and classified as non-current in our consolidated statements of financial position.The accounting standards for uncertainty in income taxes prescribe a recognition threshold and a measurement attribute for tax positions taken, or expected to be taken, in a tax return that may not be sustainable. As of December 31, 2021, we have not recognized any uncertain income tax positions.We file our federal and Michigan income tax returns as part of the FortisUS consolidated tax returns and we are a party to an intercompany tax sharing agreement that establishes the method for determining tax liabilities that are due and allocating tax attributes that are utilized on the consolidated income tax returns. We continue to file with various other state and city jurisdictions where we have a separate return filing obligation. Our prior consolidated federal tax returns are no longer subject to U.S. federal tax examinations for tax years 2017 and earlier. State and city jurisdictions that remain subject to examination range from tax years 2017 to 2020. In the event we are assessed interest or penalties by any income tax jurisdictions, interest and penalties would be recorded as interest expense and other expense, respectively, in our consolidated statements of comprehensive income.

v3.22.0.1

REVENUE (Policies)
12 Months Ended

Dec. 31, 2021

Revenue from Contract with Customer [Abstract]

Revenues Revenues from the transmission of electricity are recognized as services are provided based on our FERC-approved cost-based Formula Rates. We record a reserve for revenue subject to refund when such refund is probable and can be reasonably estimated. This reserve is recorded as a reduction to operating revenues.The cost-based Formula Rates at our Regulated Operating Subsidiaries include a true-up mechanism that compares the actual revenue requirements of our Regulated Operating Subsidiaries to their billed revenues for each year to determine any over- or under-collection of revenue requirements and we record a revenue deferral or accrual for the difference. The true-up mechanisms under our Formula Rates are considered alternative revenue programs of rate-regulated utilities. Operating revenues arising from these alternative revenue programs are presented on our consolidated statements of comprehensive income in the line “Formula Rate true-up”, which is separate from the reporting of our tariff revenues, which are presented in the line “Transmission and other services.” Only the initial origination of our alternative revenue program revenue is reported in the Formula Rate true-up line on our consolidated statements of comprehensive income. When those amounts are subsequently included in the price of utility service and billed or refunded to customers, we account for that event as the recovery or settlement of the associated regulatory asset or regulatory liability, respectively. Refer to Note 5 under “Cost-Based Formula Rates with True-Up Mechanism” and Note 3 under “Formula Rate True-Up” for a discussion of our revenue accounting under our cost-based Formula Rates.
Transmission Services
Through our Regulated Operating Subsidiaries, we generate nearly all our revenue from providing electric transmission services over our transmission systems. As independent transmission companies, our transmission services are provided and revenues are received based on our tariffs, as approved by the FERC. The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items.
We recognize revenue for transmission services over time as transmission services are provided to customers (generally using an output measure of progress based on transmission load delivered). Customers simultaneously receive and consume the benefits provided by the Regulated Operating Subsidiaries’ services. We recognize revenue in the amount to which we have the right to invoice because we have a right to consideration in an amount that corresponds directly with the value to the customer of performance completed to date. As billing agents, MISO and SPP independently bill our customers on a monthly basis and collects fees for the use of our transmission systems. No component of the transaction price is allocated to unsatisfied performance obligations.
Transmission service revenue includes an estimate for unbilled revenues from service that has been provided but not billed by the end of an accounting period. Unbilled revenues are dependent upon a number of factors that require management’s judgment including estimates of transmission network load (for the MISO Regulated Operating Subsidiaries) and preliminary information provided by billing agents. Due to the seasonal fluctuations of actual load, the unbilled revenue amount generally increases during the spring and summer and decreases during the fall and winter. See Note 4 for information on changes in unbilled accounts receivable.
Other Services
Other services revenue consists of rental revenues, easement revenues, and amounts from providing ancillary services. A portion of other services revenue is treated as a revenue credit and reduces gross revenue requirement when calculating net revenue requirement under our Formula Rates. Total other services revenue was $6 million, $5 million and $7 million for the years ended December 31, 2021, 2020 and 2019, respectively.
Formula Rate True-Up
The true-up mechanism under our Formula Rates is considered an alternative revenue program of a rate-regulated utility given it permits our Regulated Operating Subsidiaries to adjust future rates in response to past activities or completed events in order to collect our actual revenue requirements under our Formula Rates. In accordance with our accounting policy, only the current year origination of the true-up is reported as a Formula Rate true-up. See “Cost-Based Formula Rates with True-Up Mechanism” in Note 5 for more information on our Formula Rates.

v3.22.0.1

ACCOUNTS RECEIVABLE (Tables)
12 Months Ended

Dec. 31, 2021

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable
The following table presents the components of accounts receivable on the consolidated statements of financial position:
December 31,
(In millions of USD) 2021 2020 2019 2018
Trade accounts receivable $ 3 $ 2 $ 2 $ 2
Unbilled accounts receivable 116 102 102 92
Other 9 10 13 8
Total accounts receivable $ 128 $ 114 $ 117 $ 102

v3.22.0.1

REGULATORY MATTERS (Tables)
12 Months Ended

Dec. 31, 2021

Regulated Operations [Abstract]

Schedule of Regulatory Assets and Liabilities
Regulatory assets and liabilities associated with our Regulated Operating Subsidiaries’ Formula Rate revenue accruals and deferrals, including accrued interest, are recorded in the consolidated statements of financial position as follows:
December 31,
(In millions of USD) 2021 2020
Current regulatory assets $ 20 $ 44
Non-current regulatory assets 10 19
Current regulatory liabilities (13) (1)
Non-current regulatory liabilities (19) (12)
Net regulatory (liabilities) assets $ (2) $ 50

Schedule Of Changes In Regulatory Assets And Liabilities Formula Rate Revenue Accruals And Deferrals
The net changes in regulatory assets and liabilities associated with our Regulated Operating Subsidiaries’ Formula Rate revenue accruals and deferrals, including accrued interest, were as follows during the year ended December 31, 2021:
(In millions of USD) Total
Net regulatory assets as of December 31, 2020 $ 50
Net collection of 2019 revenue deferrals and accruals, including accrued interest (43)
Net revenue deferral for the year ended December 31, 2021 (9)
Net regulatory liabilities as of December 31, 2021 $ (2)

v3.22.0.1

REGULATORY ASSETS AND LIABILITIES (Tables)
12 Months Ended

Dec. 31, 2021

Regulatory Assets and Liabilities Disclosure [Abstract]

Schedule of Regulatory Assets
The following table summarizes the regulatory asset balances:
December 31,
(In millions of USD) 2021 2020
Regulatory Assets:
Current:
Revenue accruals (including accrued interest of less than $1 and $2 as of December 31, 2021 and 2020, respectively) (a) $ 20 $ 44
Amounts recoverable related to the Initial Complaint (including accrued interest of less than $1 and $2 as of December 31, 2021 and 2020, respectively) (b) 1 8
Total current 21 52
Non-current:
Revenue accruals (including accrued interest of less than $1 as of December 31, 2021 and 2020) (a) 10 19
ITCTransmission ADIT deferral (net of accumulated amortization of $57 and $54 as of December 31, 2021 and 2020, respectively) 4 7
METC ADIT deferral (net of accumulated amortization of $35 and $33 as of December 31, 2021 and 2020, respectively) 8 10
METC regulatory deferrals (net of accumulated amortization of $12 and $11 as of December 31, 2021 and 2020, respectively) 3 4
Income taxes recoverable related to AFUDC equity 114 106
ITC Great Plains start-up, development and pre-construction (net of accumulated amortization of $9 and $7 as of December 31, 2021 and 2020, respectively) 4 6
Pensions and postretirement 20 30
Income taxes recoverable related to implementation of the Michigan Corporate Income Tax 6 6
Accrued asset removal costs 21 24
Total non-current 190 212
Total $ 211 $ 264
____________________________
(a)Refer to discussion of revenue accruals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries do not earn a return on the balance of these regulatory assets, but do accrue interest carrying costs, which are subject to rate recovery along with the principal amount of the revenue accrual.
(b)Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”
^[1],[2]

Schedule of Regulatory Liabilities
The following table summarizes the regulatory liability balances:
December 31,
(In millions of USD) 2021 2020
Regulatory Liabilities:
Current:
Revenue deferrals (including accrued interest of $1 and less than $1 as of December 31, 2021 and 2020, respectively) (a) $ 13 $ 1
Refund related to the Initial Complaint (including accrued interest of $1 as of December 31, 2020) (b) — 13
Other 1 —
Total current 14 14
Non-current:
Revenue deferrals (including accrued interest of less than $1 as of December 31, 2021 and 2020) (a) 19 12
Accrued asset removal costs 70 73
Excess state income tax deductions 3 3
Income taxes refundable related to implementation of the TCJA 495 507
Pensions and postretirement 31 16
Other 1 1
Total non-current 619 612
Total $ 633 $ 626
____________________________
(a)Refer to discussion of revenue deferrals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries accrue interest on the true-up amounts which will be refunded through rates along with the principal amount of revenue deferrals in future periods.
(b)Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”
^[3],[4]

[1] Refer to discussion of revenue accruals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries do not earn a return on the balance of these regulatory assets, but do accrue interest carrying costs, which are subject to rate recovery along with the principal amount of the revenue accrual.

[2] Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”

[3] Refer to discussion of revenue deferrals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries accrue interest on the true-up amounts which will be refunded through rates along with the principal amount of revenue deferrals in future periods.

[4] Refer to discussion of the refund in Note 17 under “Rate of Return on Equity Complaints.”

v3.22.0.1

GOODWILL AND INTANGIBLE ASSETS (Tables)
12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Expected Amortization Expense We expect the annual amortization of our intangible assets that have been recorded as of December 31, 2021 to be as follows:
(In millions of USD)
2022 $ 3
2023 4
2024 3
2025 2
2026 2
2027 and thereafter 12
Total $ 26

v3.22.0.1

PROPERTY, PLANT AND EQUIPMENT (Tables)
12 Months Ended

Dec. 31, 2021

Public Utilities, Property, Plant and Equipment [Abstract]

Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment — net consisted of the following:
December 31,
(In millions of USD) 2021 2020
Property, plant and equipment
Regulated Operating Subsidiaries:
Property, plant and equipment in service $ 11,434 $ 10,661
Construction work in progress 529 523
Capital equipment inventory 96 103
Other 87 81
ITC Holdings and other 14 14
Total 12,160 11,382
Less: Accumulated depreciation and amortization (2,199) (2,055)
Property, plant and equipment, net $ 9,961 $ 9,327

v3.22.0.1

DEBT (Tables)
12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Debt
Amounts of outstanding debt were classified as debt maturing within one year and long-term debt in the consolidated statements of financial position as follows:
December 31,
(In millions of USD) 2021 2020
ITC Holdings 6.375% Senior Notes, due September 30, 2036
$ 200 $ 200
ITC Holdings 4.05% Senior Notes, due July 1, 2023 250 250
ITC Holdings 3.65% Senior Notes, due June 15, 2024
400 400
ITC Holdings 5.30% Senior Notes, due July 1, 2043
300 300
ITC Holdings 3.25% Notes, due June 30, 2026
400 400
ITC Holdings 2.70% Senior Notes, due November 15, 2022 (a) 500 500
ITC Holdings 3.35% Senior Notes, due November 15, 2027 500 500
ITC Holdings 2.95% Senior Notes, due May 14, 2030 700 700
ITC Holdings Revolving Credit Agreement, due October 18, 2024 39 37
ITC Holdings Commercial Paper Program (a)
155 67
ITCTransmission 6.125% First Mortgage Bonds, Series C, due March 31, 2036
100 100
ITCTransmission 4.625% First Mortgage Bonds, Series E, due August 15, 2043
285 285
ITCTransmission 4.27% First Mortgage Bonds, Series F, due June 10, 2044
100 100
ITCTransmission 4.00% First Mortgage Bonds, Series G, due March 30, 2053
225 225
ITCTransmission 3.30% First Mortgage Bonds, Series H, due August 28, 2049
75 75
ITCTransmission Revolving Credit Agreement, due October 18, 2024 88 33
METC 5.64% Senior Secured Notes, due May 6, 2040
50 50
METC 3.98% Senior Secured Notes, due October 26, 2042
75 75
METC 4.19% Senior Secured Notes, due December 15, 2044
150 150
METC 3.90% Senior Secured Notes, due April 26, 2046
200 200
METC 4.55% Senior Secured Notes, due January 15, 2049
50 50
METC 4.65% Senior Secured Notes, due July 10, 2049 50 50
METC 2.90% Senior Secured Notes, Series A, due August 3, 2051 75 —
METC 3.02% Senior Secured Notes, due October 14, 2055 150 150
METC Revolving Credit Agreement, due October 18, 2024 30 20
ITC Midwest 6.15% First Mortgage Bonds, Series A, due January 31, 2038
175 175
ITC Midwest 4.60% First Mortgage Bonds, Series D, due December 17, 2024
75 75
ITC Midwest 3.50% First Mortgage Bonds, Series E, due January 19, 2027
100 100
ITC Midwest 4.09% First Mortgage Bonds, Series F, due April 30, 2043
100 100
ITC Midwest 3.83% First Mortgage Bonds, Series G, due April 7, 2055
225 225
ITC Midwest 4.16% First Mortgage Bonds, Series H, due April 18, 2047
200 200
ITC Midwest 4.32% First Mortgage Bonds, Series I, due November 1, 2051
175 175
ITC Midwest 3.13% First Mortgage Bonds, Series J, due July 15, 2051 180 180
ITC Midwest Revolving Credit Agreement, due October 18, 2024 139 75
ITC Great Plains 4.16% First Mortgage Bonds, Series A, due November 26, 2044
150 150
ITC Great Plains Revolving Credit Agreement, due October 18, 2024 33 33
Other 3 —
Total principal 6,702 6,405
Unamortized deferred financing fees and discount
(39) (43)
Total debt
$ 6,663 $ 6,362
____________________________
(a)As of December 31, 2021 and 2020 there was $654 million and $67 million, respectively, net of unamortized deferred financing fees and discount, of debt included within debt maturing within one year in the consolidated statements of financial position.
^[1]

Schedule of Maturities of Debt
The annual maturities of debt as of December 31, 2021 are as follows:
(In millions of USD)
2022 $ 655
2023 250
2024 804
2025 —
2026 400
2027 and thereafter 4,593
Total $ 6,702
As of December 31, 2021, the maturities of our debt outstanding were as follows:
(In millions of USD)
2022 $ 655
2023 250
2024 439
2025 —
2026 400
2027 and thereafter 1,700
Total $ 3,444

Schedule of Interest Rate Derivatives
We have entered into interest rate swaps to manage interest rate risk associated with the forecasted future issuance of fixed-rate debt at ITC Holdings, the proceeds of which will be used for the expected repayment of the ITC Holdings 2.70% Senior Notes, due November 15, 2022. At December 31, 2021, ITC Holdings had the following interest rate swaps:
Interest Rate Swaps
(in millions of USD, except percentages) Notional Amount Weighted Average Fixed Rate Original Term Effective Date
July 2021 swap $ 45 1.113% 5 years November 2022
November 2021 swap 45 1.581% 5 years November 2022
November 2021 swap 45 1.492% 5 years November 2022
November 2021 swap 45 1.497% 5 years November 2022
November 2021 swap 50 1.544% 5 years November 2022
December 2021 swap 50 1.560% 5 years November 2022
December 2021 swap 50 1.489% 5 years November 2022
December 2021 swap 45 1.475% 5 years November 2022
Total $ 375 1.471%

Schedule of Revolving Credit Agreements At December 31, 2021, ITC Holdings and certain of its Regulated Operating Subsidiaries had the following unsecured revolving credit facilities available:
(In millions of USD, except percentages) Total
Available
Capacity Outstanding
Balance (a) Unused
Capacity Weighted Average
Interest Rate on
Outstanding Balance (b) Commitment
Fee Rate (c)
ITC Holdings $ 400 $ 39 $ 361 (d) 1.4% 0.175 %
ITCTransmission 100 88 12 1.1% 0.10 %
METC 100 30 70 1.1% 0.10 %
ITC Midwest 225 139 86 1.1% 0.10 %
ITC Great Plains 75 33 42 1.1% 0.10 %
Total $ 900 $ 329 $ 571
____________________________
(a)Included within long-term debt in the consolidated statements of financial position.
(b)Interest charged on borrowings depends on the variable rate structure we elected at the time of each borrowing.
(c)Calculation based on the average daily unused commitments, subject to adjustment based on the borrower’s credit rating.
(d)ITC Holdings’ revolving credit agreement may be used for general corporate purposes, including to repay commercial paper issued pursuant to the commercial paper program described above, if necessary. While outstanding commercial paper does not reduce available capacity under ITC Holdings’ revolving credit agreement, the unused capacity under this agreement adjusted for the commercial paper outstanding was $206 million as of December 31, 2021.
^{[2],[3],[4],[5]}

[1] As of December 31, 2021 and 2020 there was $654 million and $67 million, respectively, net of unamortized deferred financing fees and discount, of debt included within debt maturing within one year in the consolidated statements of financial position

[2] Calculation based on the average daily unused commitments, subject to adjustment based on the borrower’s credit rating.

[3] ITC Holdings’ revolving credit agreement may be used for general corporate purposes, including to repay commercial paper issued pursuant to the commercial paper program described above, if necessary. While outstanding commercial paper does not reduce available capacity under ITC Holdings’ revolving credit agreement, the unused capacity under this agreement adjusted for the commercial paper outstanding was $206 million as of December 31, 2021.

[4] Included within long-term debt in the consolidated statements of financial position.

[5] nterest charged on borrowings depends on the variable rate structure we elected at the time of each borrowing.

v3.22.0.1

INCOME TAXES (Tables)
12 Months Ended

Dec. 31, 2021

Income Tax Disclosure [Abstract]

Income Tax Reconciliation
Our effective tax rate varied from the statutory federal income tax rate due to differences between the book and tax treatment of various transactions as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Income tax expense at 21% federal statutory rate $ 112 $ 114 $ 118
State income taxes (net of federal benefit) 24 28 22
AFUDC equity (5) (4) (5)
Revaluation of deferred federal income taxes (a) (9) (2) (2)
Valuation allowance 4 — —
Other, net 1 — (1)
Total income tax provision $ 127 $ 136 $ 132
____________________________
(a)Amount for the year ended December 31, 2021 is related to the change in our amortization method associated with excess deferred tax liabilities. Refer to discussion in Note 6 under “Income Taxes Refundable Related to Implementation of the TCJA”.
^[1],[2]

Components of Income Tax Provision
Components of the income tax provision were as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Current income tax benefit $ — $ (2) $ (3)
Deferred income tax expense 127 138 135
Total income tax provision $ 127 $ 136 $ 132

Deferred Tax Assets and Liabilities
Deferred income tax assets (liabilities) consisted of the following:
December 31,
(In millions of USD) 2021 2020
Property, plant and equipment $ (1,274) $ (1,156)
Federal income tax NOLs and other credits 49 85
METC regulatory deferral (a) (3) (4)
Acquisition adjustments — ADIT deferrals (a) (3) (5)
Goodwill (145) (139)
Regulatory liability gross up — TCJA 131 134
Pension and postretirement liabilities 22 20
State income tax NOLs (net of federal benefit) 57 58
True-up adjustment principal & interest — (14)
Valuation allowance (4) —
Other, net 9 8
Net deferred tax liabilities $ (1,161) $ (1,013)
Gross deferred income tax liabilities $ (1,434) $ (1,333)
Gross deferred income tax assets 277 320
Valuation allowance (4) —
Net deferred tax liabilities $ (1,161) $ (1,013)
____________________________
(a)Described in Note 6
^[3]

[1] $64 million

[2] $64 million

[3] Described in Note 6

v3.22.0.1

FAIR VALUE MEASUREMENTS (Tables)
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Assets and Liabilities at Fair Value Subject to Three-Tier Hierarchy
Our assets measured at fair value subject to the three-tier hierarchy at December 31, 2021, were as follows:
Fair Value Measurements at Reporting Date Using
Quoted Prices in
Active Markets for
Identical Assets Significant
Other Observable
Inputs Significant
Unobservable
Inputs
(in millions of USD) (Level 1) (Level 2) (Level 3)
Financial assets measured on a recurring basis:
Mutual funds — fixed income securities $ 51 $ — $ —
Mutual funds — equity securities 12 — —
Interest rate swap derivatives — 2 —
Total $ 63 $ 2 $ —

Our assets measured at fair value subject to the three-tier hierarchy at December 31, 2020, were as follows:
Fair Value Measurements at Reporting Date Using
Quoted Prices in
Active Markets for
Identical Assets Significant
Other Observable
Inputs Significant
Unobservable
Inputs
(in millions of USD) (Level 1) (Level 2) (Level 3)
Financial assets measured on a recurring basis:
Cash equivalents $ 1 $ — $ —
Mutual funds — fixed income securities 52 — —
Mutual funds — equity securities 10 — —
Total $ 63 $ — $ —

v3.22.0.1

RETIREMENT BENEFITS AND ASSETS HELD IN TRUST (Tables)
12 Months Ended

Dec. 31, 2021

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block

Net Defined Benefit Cost Components
Net periodic benefit costs by component for the pension plans and postretirement benefit plan were as follows:
Pension Plans Postretirement Benefit Plan
Years Ended December 31, Years Ended December 31,
(In millions of USD) 2021 2020 2019 2021 2020 2019
Service cost $ 9 $ 8 $ 7 $ 11 $ 11 $ 9
Interest cost 3 4 5 3 4 4
Expected return on plan assets (6) (6) (5) (6) (5) (4)
Amortization of unrecognized loss 1 1 1 — — —
Net benefit cost $ 7 $ 7 $ 8 $ 8 $ 10 $ 9

Assumptions Used
Actuarial assumptions used to determine the benefit obligations for the pension plans and postretirement benefit plan are as follows:
Pension Plans Postretirement Benefit Plan
December 31, December 31,
2021 2020 2019 2021 2020 2019
Weighted average discount rate 2.86% 2.49% 3.27% 3.14% 2.94% 3.61%
Weighted average interest crediting rate 4.00% 4.00% 4.00% N/A N/A N/A
Annual rate of salary increases 4.00% 4.00% 4.00% 4.00% 4.00% 4.00%
Health care cost trend rate N/A N/A N/A 5.75% 6.00% 6.25%
Ultimate health care cost trend rate N/A N/A N/A 5.00% 5.00% 5.00%
Year that the ultimate trend rate is reached N/A N/A N/A 2025 2025 2025
Annual rate of increase in dental benefit costs N/A N/A N/A 4.50% 4.50% 4.50%
Actuarial assumptions used to determine the benefit cost for the pension plans and postretirement benefit plan are as follows:
Pension Plans Postretirement Benefit Plan
Years Ended December 31, Years Ended December 31,
2021 2020 2019 2021 2020 2019
Weighted average discount rate — service cost 2.77% 3.47% 4.42% 3.20% 3.80% 4.58%
Weighted average discount rate — interest cost 1.93% 2.91% 3.99% 2.50% 3.30% 4.28%
Weighted average interest crediting rate 4.00% 4.00% 4.50% N/A N/A N/A
Annual rate of salary increases 4.00% 4.00% 4.00% 4.00% 4.00% 4.00%
Health care cost trend rate N/A N/A N/A 6.00% 6.25% 6.50%
Ultimate health care cost trend rate N/A N/A N/A 5.00% 5.00% 5.00%
Year that the ultimate trend rate is reached N/A N/A N/A 2025 2025 2025
Expected long-term rate of return on plan assets 5.70% 6.00% 6.60% 4.30% 4.50% 5.00%

Defined Benefit Plans Disclosures
The following table reconciles the obligations, assets, and funded status of the pension plans and postretirement benefit plan as well as the presentation of the funded status of the plans in the consolidated statements of financial position:
Pension Plans Postretirement Benefit Plan
December 31, December 31,
(In millions of USD) 2021 2020 2021 2020
Change in Benefit Obligation:
Beginning projected benefit obligation $ (162) $ (141) $ (122) $ (113)
Service cost (9) (8) (11) (11)
Interest cost (3) (4) (3) (4)
Plan amendments — — — 2
Actuarial net gain/(loss) 5 (16) 8 3
Benefits paid 7 7 1 1
Settlements 2 — — —
Ending projected benefit obligation (160) (162) (127) (122)
Change in Plan Assets:
Beginning plan assets at fair value 107 91 120 95
Actual return on plan assets 10 15 13 16
Employer contributions 4 4 8 10
Benefits paid (4) (3) (1) (1)
Ending plan assets at fair value 117 107 140 120
Funded status, (underfunded)/overfunded $ (43) $ (55) $ 13 $ (2)
Accumulated benefit obligation:
Retirement plan $ (99) $ (95) N/A N/A
Supplemental benefit plans (54) (60) N/A N/A
Total accumulated benefit obligation $ (153) $ (155) $ — $ —
Amounts recorded as:
Funded Status:
Accrued pension and postretirement liabilities $ (52) $ (57) $ — $ (2)
Other non-current assets 13 6 13 —
Other current liabilities (4) (4) — —
Total $ (43) $ (55) $ 13 $ (2)
Unrecognized Amounts in Non-current Regulatory Assets/(Liabilities):
Net actuarial loss/(gain) $ 19 $ 30 $ (29) $ (14)
Net prior service cost/(credit) 1 — (2) (2)
Total $ 20 $ 30 $ (31) $ (16)

Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]
The combined accumulated benefit obligation and fair value of plan assets for those plans in which the accumulated benefit obligation is in excess of the fair value of plan assets are as follows:
Pension Plans
December 31,
(In millions of USD) 2021 2020
Accumulated benefit obligation $ (54) $ (60)
Fair value of plan assets (a) — —
____________________________
(a)The investments held in trust for our supplemental benefit plans are not included in the plan asset amounts presented herein, but are included in other assets on our consolidated statements of financial position.
^[1]

Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]
The combined projected benefit obligation and fair value of plan assets for those plans in which the projected benefit obligation is in excess of the fair value of plan assets are as follows:
Pension Plans
December 31,
(In millions of USD) 2021 2020
Projected benefit obligation $ (56) $ (61)
Fair value of plan assets (a) — —
____________________________
(a)The investments held in trust for our supplemental benefit plans are not included in the plan asset amounts presented herein, but are included in other assets on our consolidated statements of financial position ^[2]

Projected Benefit Payments
At December 31, 2021, the projected benefit payments for the pension plans and postretirement benefit plan calculated using the same assumptions as those used to calculate the benefit obligations described above are as follows:
(In millions of USD) Pension Plans Postretirement Benefit Plan
2022 $ 8 $ 2
2023 9 2
2024 9 2
2025 10 3
2026 10 3
2027 through 2031 63 22

Other Postretirement Benefits Plan

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block

Schedule of Allocation of Plan Assets
As of December 31, 2021 and 2020, the plan assets of the retirement plan and postretirement benefit plan consisted of the following assets by category:
Target Allocation Pension Plans Postretirement Benefit Plan
Asset Category 2021 2021 2020 2021 2020
Fixed income securities 50 % 50 % 50 % 50 % 50 %
Equity securities 50 % 50 % 50 % 50 % 50 %
Total 100 % 100 % 100 % 100 % 100 %

Equity Securities [Member]

Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block

Schedule of Allocation of Plan Assets
For the years ended December 31, 2021 and 2020, the fair value of retirement plan and postretirement benefit plan assets measured on a recurring basis at the Level 1 tier were as follows:
Pension Plans Postretirement Benefit Plan
December 31, December 31,
(In millions of USD) 2021 2020 2021 2020
Mutual funds — U.S. equity securities $ 47 $ 43 $ 67 $ 57
Mutual funds — international equity securities 12 11 3 3
Mutual funds — fixed income securities 58 53 70 60
Total $ 117 $ 107 $ 140 $ 120

[1] The investments held in trust for our supplemental benefit plans are not included in the plan asset amounts presented herein, but are included in other assets on our consolidated statements of financial position.

[2] The investments held in trust for our supplemental benefit plans are not included in the plan asset amounts presented herein, but are included in other assets on our consolidated statements of financial position.

v3.22.0.1

STOCKHOLDER'S EQUITY (Tables)
12 Months Ended

Dec. 31, 2021

Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]

Changes in Accumulated Other Comprehensive Income
The following table provides the components of changes in AOCI:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Balance at the beginning of period $ (8) $ 7 $ 4
Derivative Instruments
Reclassification of net loss relating to interest rate cash flow hedges from AOCI to earnings (net of tax of $2 for the year ended December 31, 2021, $1 for the year ended December 31, 2020 and less than $1 for the year ended December 31, 2019) (a) 4 3 1
Gain (loss) on interest rate swaps relating to interest rate cash flow hedges (net of tax of $1 for the year ended December 31, 2021, $8 for the year ended December 31, 2020 and $1 for the year ended December 31, 2019) 2 (18) 2
Total other comprehensive income (loss), net of tax 6 (15) 3
Balance at the end of period $ (2) $ (8) $ 7
____________________________
(a)The reclassification of the net loss relating to interest rate cash flow hedges is reported in interest expense on a pre-tax basis.
^[1]

[1] The reclassification of the net loss relating to interest rate cash flow hedges is reported in interest expense on a pre-tax basis

v3.22.0.1

SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN (Tables)
12 Months Ended

Dec. 31, 2021

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
We recorded share-based compensation costs as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Operation and maintenance expenses $ 2 $ 2 $ 2
General and administrative expenses 32 23 30
Amounts capitalized to property, plant and equipment 9 7 8
Total share-based compensation costs $ 43 $ 32 $ 40
Total tax benefit recognized in the consolidated statements of comprehensive income
$ 9 $ 8 $ 8

Share-based Compensation Arrangements by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block]
The following table shows the changes in SBUs during the year ended December 31, 2021:
Number of
Service
Based Units
SBUs at December 31, 2020 687,710
Granted 247,181
Vested and paid out (219,605)
Forfeited (25,474)
SBUs at December 31, 2021 689,812

Share-based Compensation Arrangements by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest [Table Text Block]
The following table shows the changes in PBUs during the year ended December 31, 2021:
Number of
Performance
Based Units
PBUs at December 31, 2020 900,951
Granted 314,940
Vested and paid out (291,325)
Forfeited (25,474)
PBUs at December 31, 2021 899,092

Performance Based Units (PBUs)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
The following table presents the classification in the consolidated statements of financial position of obligations related to outstanding PBUs not yet settled:
December 31,
(In millions of USD) 2021 2020
Accrued compensation $ 28 $ 20
Other long-term liabilities 25 22
Total $ 53 $ 42

Service Based Units (SBUs)

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
The following table presents the classification in the consolidated statements of financial position of obligations related to outstanding SBUs not yet settled:
December 31,
(In millions of USD) 2021 2020
Accrued compensation $ 11 $ 9
Other long-term liabilities 11 10
Total $ 22 $ 19

v3.22.0.1

JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES (Tables)
12 Months Ended

Dec. 31, 2021

Regulated Operations [Abstract]

Schedule of Jointly Owned Utility Plant We have investments in jointly owned utility assets as shown in the table below as of December 31, 2021:
Net Investments (a)
(In millions of USD) Substations Lines
ITCTransmission (b) $ — $ 29
METC (c) 17 41
ITC Midwest (d) 49 103
ITC Great Plains (e) 10 23
Total $ 76 $ 196
____________________________
(a)Amount represents our investment in jointly held plant in-service, which has been reduced by the ownership interest amounts of other parties.
(b)ITCTransmission has a 49.6% joint ownership in 345 kV transmission lines with a municipal power agency.
(c)METC has joint ownership in several assets within various substations and several 345 kV transmission lines with various parties including Consumers Energy. As of December 31, 2021, METC’s ownership percentages for jointly owned substation facilities and lines ranged from less than 1.0% to 92.0% and 1.0% to 41.9%, respectively.
(d)ITC Midwest has joint ownership in several substations and transmission lines with various parties. ITC Midwest’s ownership percentages for jointly owned substation facilities and lines ranged from 28.0% to 80.0% and 11.0% to 80.0%, respectively, as of December 31, 2021. In addition to the jointly held plant in-service, ITC Midwest has $71 million of construction work in progress for jointly held plant in the consolidated statements of financial position as of December 31, 2021.
(e)ITC Great Plains has a 51.0% joint ownership in a transmission project with an electric cooperative.
^{[1],[2],[3],[4],[5]}

[1] Amount represents our investment in jointly held plant in-service, which has been reduced by the ownership interest amounts of other parties.

[2] ITC Midwest has joint ownership in several substations and transmission lines with various parties. ITC Midwest’s ownership percentages for jointly owned substation facilities and lines ranged from 28.0% to 80.0% and 11.0% to 80.0%, respectively, as of December 31, 2021. In addition to the jointly held plant in-service, ITC Midwest has $71 million of construction work in progress for jointly held plant in the consolidated statements of financial position as of December 31, 2021.

[3] ITCTransmission has a 49.6% joint ownership in 345 kV transmission lines with a municipal power agency.

[4] METC has joint ownership in several assets within various substations and several 345 kV transmission lines with various parties including Consumers Energy. As of December 31, 2021, METC’s ownership percentages for jointly owned substation facilities and lines ranged from less than 1.0% to 92.0% and 1.0% to 41.9%, respectively.

[5] TC Great Plains has a 51.0% joint ownership in a transmission project with an electric cooperative.

v3.22.0.1

COMMITMENTS AND CONTINGENT LIABILITIES (Tables)
12 Months Ended

Dec. 31, 2021

Commitments and Contingencies Disclosure [Abstract]

Schedule Of Impacts from the ROE Complaints [Table]
The recognition of the obligations associated with the MISO ROE Complaints resulted in the following impacts to the consolidated statements of comprehensive income:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Revenue increase $ — $ 32 $ 69
Interest expense decrease — (3) (12)
Estimated net income increase — 25 61

v3.22.0.1

SEGMENT INFORMATION (Tables)
12 Months Ended

Dec. 31, 2021

Segment Reporting [Abstract]

Schedule of Financial Information by Reportable Segment
Regulated
Operating ITC Holdings Reconciliations/
2021 Subsidiaries and Other Eliminations Total
(In millions of USD)
Operating revenues $ 1,386 $ 1 $ (38) $ 1,349
Depreciation and amortization 231 1 — 232
Interest expense, net 123 129 (1) 251
Income (loss) before income taxes 691 (158) — 533
Income tax provision (benefit) 173 (46) — 127
Net income 518 406 (518) 406
Property, plant and equipment, net 9,954 7 — 9,961
Goodwill 950 — — 950
Total assets (a) 11,317 6,134 (6,006) 11,445
Capital expenditures 841 — (7) 834
Regulated
Operating ITC Holdings Reconciliations/
2020 Subsidiaries and Other Eliminations Total
(In millions of USD)
Operating revenues $ 1,333 $ 1 $ (36) $ 1,298
Depreciation and amortization 218 1 — 219
Interest expense, net 118 122 — 240
Income (loss) before income taxes 683 (140) — 543
Income tax provision (benefit) 179 (43) — 136
Net income 504 407 (504) 407
Property, plant and equipment, net 9,319 8 — 9,327
Goodwill 950 — — 950
Total assets (a) 10,710 5,830 (5,715) 10,825
Capital expenditures 886 — (1) 885
Regulated
Operating ITC Holdings Reconciliations/
2019 Subsidiaries and Other Eliminations Total
(In millions of USD)
Operating revenues $ 1,358 $ — $ (31) $ 1,327
Depreciation and amortization 201 2 — 203
Interest expense, net 105 119 — 224
Income (loss) before income taxes 710 (150) — 560
Income tax provision (benefit) 179 (47) — 132
Net income 531 428 (531) 428
Property, plant and equipment, net 8,573 9 — 8,582
Goodwill 950 — — 950
Total assets (a) 9,946 5,402 (5,290) 10,058
Capital expenditures 874 — (9) 865
____________________________
(a)Reconciliation of total assets results primarily from differences in the netting of deferred tax assets and liabilities in our segments as compared to the classification in our consolidated statements of financial position.
^[1]

[1] Reconciliation of total assets results primarily from differences in the netting of deferred tax assets and liabilities in our segments as compared to the classification in our consolidated statements of financial position.

v3.22.0.1

SEC Schedule, Article 12-04, Condensed Financial Information of Registrant (Tables)
12 Months Ended

Dec. 31, 2021

Condensed Financial Information Disclosure [Abstract]

Schedule of Related Party Transactions [Table Text Block]
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Net income tax payments (to) from: (a)
ITCTransmission $ 24 $ 17 $ 7
METC 15 9 4
ITC Midwest 10 1 3
ITC Great Plains 6 6 (1)
ITC Interconnection 1 — 1
____________________________
(a)The net income tax payments were pursuant to intercompany tax sharing arrangements, and the total of these tax payments is presented as a net cash outflow or inflow from operating activities in the condensed parent company statements of cash flows. Other reconciling items between the parent company and the consolidated tax liabilities are presented as deferred and other income taxes in the adjustments to reconcile net income to net cash provided by operating activities. Additionally, ITC Holdings paid its subsidiaries for NOLs utilized by the consolidated group.
^[1]

related party equity transactions
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Equity contributions to subsidiaries $ (51) $ (88) $ (120)
Dividends from subsidiaries (a) 10 3 3
Return of capital from subsidiaries (a) 259 228 239
____________________________
(a)Includes ITCTransmission, MTH, ITC Midwest and other subsidiaries.
^[2]

[1] The net income tax payments were pursuant to intercompany tax sharing arrangements, and the total of these tax payments is presented as a net cash outflow or inflow from operating activities in the condensed parent company statements of cash flows. Other reconciling items between the parent company and the consolidated tax liabilities are presented as deferred and other income taxes in the adjustments to reconcile net income to net cash provided by operating activities. Additionally, ITC Holdings paid its subsidiaries for NOLs utilized by the consolidated group

[2] $64 million

v3.22.0.1

GENERAL (Details)

Apr. 20, 2016

Business Acquisition [Line Items]

Ownership Percentage of Minority Investor Upon Completion of Merger 19.90%

v3.22.0.1

RECENT ACCOUNTING PRONOUNCEMENTS Restricted Cash (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

Restricted Cash - Beginning Balance $ 2 $ 2 $ 4

Restricted Cash, Ending Balance 2 2 2

Increase (Decrease) in Other Operating Assets and Liabilities, Net $ (17) $ (16) $ (3)

v3.22.0.1

RECENT ACCOUNTING PRONOUNCEMENTS Service Cost (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

New Accounting Pronouncements or Change in Accounting Principle [Line Items]

General and administrative $ 128 $ 115 $ 138

Other Nonoperating Income (Expense) $ (5) $ (3) $ 0

v3.22.0.1

SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Property, Plant and Equipment

Depreciation and amortization expense $ 223 $ 209 $ 194

Composite depreciation rate 2.00% 2.00% 2.00%

Property, Plant and Equipment [Line Items]

AFUDC debt $ 8 $ 7 $ 8

Goodwill and Intangible Assets

Goodwill impairment 0

Deferred Financing Fees and Discount or Premium on Debt

Amortization of deferred financing fees and debt discount 5 5 $ 5

Asset Retirement Obligations

Asset retirement obligations $ 6 $ 6

Minimum

Property, Plant and Equipment [Line Items]

Property, plant and equipment, useful life 45 years

Maximum

Property, Plant and Equipment [Line Items]

Property, plant and equipment, useful life 60 years

v3.22.0.1

REVENUE (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Disaggregation of Revenue [Line Items]

Transmission services $ 1,358 $ 1,290 $ 1,286

Other services

Disaggregation of Revenue [Line Items]

Transmission services $ 6 $ 5 $ 7

v3.22.0.1

ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Accounts, Notes, Loans and Financing Receivable [Line Items]

Accounts receivable $ 128 $ 114 $ 117 $ 102

Unbilled accounts receivable 116 102 102 92

Other 9 10 13 8

Trade accounts receivable

Accounts, Notes, Loans and Financing Receivable [Line Items]

Accounts receivable $ 3 $ 2 $ 2 $ 2

v3.22.0.1

REGULATORY MATTERS Changes in Regulatory Assets and Liabilities (Details)
$ in Millions
12 Months Ended

Dec. 31, 2021

USD ($)

Revenue Accruals and Deferrals

Net regulatory assets as of December 31, 2020 $ 50

Net collection of 2019 revenue deferrals and accruals, including accrued interest (43)

Net revenue deferral for the year ended December 31, 2021 (9)

Net regulatory liabilities as of December 31, 2021 $ (2)

v3.22.0.1

REGULATORY MATTERS Schedule of Regulatory Assets and Liabilities (Details) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Schedule of Regulatory Assets and Liabilities [Line Items]

Current regulatory assets $ 21 $ 52

Non-current regulatory assets 190 212

Current regulatory liabilities (14) (14)

Non-current regulatory liabilities (619) (612)

Net regulatory (liabilities) assets (2) 50

Revenue Deferrals, Including Accrued Interest

Schedule of Regulatory Assets and Liabilities [Line Items]

Current regulatory liabilities ^[1] (13) (1)

Non-current regulatory liabilities ^[1] (19) (12)

Revenue Accruals, Including Accrued Interest

Schedule of Regulatory Assets and Liabilities [Line Items]

Current regulatory assets ^[2] 20 44

Non-current regulatory assets ^[2] $ 10 $ 19

[1] Refer to discussion of revenue deferrals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries accrue interest on the true-up amounts which will be refunded through rates along with the principal amount of revenue deferrals in future periods.

[2] Refer to discussion of revenue accruals in Note 5 under “Cost-Based Formula Rates with True-Up Mechanism.” Our Regulated Operating Subsidiaries do not earn a return on the balance of these regulatory assets, but do accrue interest carrying costs, which are subject to rate recovery along with the principal amount of the revenue accrual.

v3.22.0.1

GOODWILL AND INTANGIBLE ASSETS (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Goodwill and Intangible Assets

Goodwill $ 950 $ 950 $ 950

Intangible assets 26

Accumulated amortization 49 46

Amortization expense 3 4 $ 3

ITCTransmission

Goodwill and Intangible Assets

Goodwill 173 173

METC

Goodwill and Intangible Assets

Goodwill 454 454

METC | Regulatory Deferrals

Goodwill and Intangible Assets

Intangible assets 10 12

Accumulated amortization $ 30 28

Intangible asset, useful life 20 years

METC | ADIT Deferral

Goodwill and Intangible Assets

Intangible assets $ 3 4

Accumulated amortization $ 16 15

Intangible asset, useful life 18 years

ITC Midwest

Goodwill and Intangible Assets

Goodwill $ 323 $ 323

ITC Great Plains

Goodwill and Intangible Assets

Intangible assets 13

Accumulated amortization $ 3

Intangible asset, useful life 50 years

v3.22.0.1

GOODWILL AND INTANGIBLE ASSETS Future Amortization Expense (Details)
$ in Millions

Dec. 31, 2021

USD ($)

Future Amortization Expense

2019 $ 3

2020 4

2021 3

2022 2

2023 2

2024 and thereafter 12

Total $ 26

v3.22.0.1

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Property, Plant and Equipment

Total $ 12,160 $ 11,382

Less: Accumulated depreciation and amortization (2,199) (2,055)

Property, plant and equipment, net 9,961 9,327

Regulated Operating Subsidiaries

Property, Plant and Equipment

Property, plant and equipment in service 11,434 10,661

Construction work in progress 529 523

Capital equipment inventory 96 103

Other 87 81

ITC Holding and Other

Property, Plant and Equipment

ITC Holdings and other $ 14 $ 14

v3.22.0.1

DEBT Annual Maturities (Details) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Maturities of Debt

2019 $ 655

2020 250

2021 804

2022 0

2023 400

2027 and thereafter 4,593

Total $ 6,702 $ 6,405

v3.22.0.1

DEBT Interest Rate Swap Agreements (Details) - USD ($)
1 Months Ended 12 Months Ended

Dec. 31, 2021

Nov. 30, 2021

Jul. 31, 2021

Dec. 31, 2021

Dec. 17, 2021

Dec. 16, 2021

Dec. 14, 2021

Nov. 08, 2021

Nov. 05, 2021

Nov. 01, 2021

Jul. 20, 2021

Dec. 31, 2020

Interest Rate Swaps

Derivative, Fixed Interest Rate 1.471% 1.544% 1.471% 1.475% 1.489% 1.56% 1.497% 1.492% 1.581% 1.113%

Derivative, Notional Amount $ 375,000,000 $ 50,000,000 $ 375,000,000 $ 45,000,000 $ 50,000,000 $ 50,000,000 $ 45,000,000 $ 45,000,000 $ 45,000,000 $ 45,000,000

Document Period End Date Dec. 31, 2021

Line of Credit Facilities and Other Debt, Total Amount Outstanding 329,000,000 $ 329,000,000 $ 198,000,000

Commercial Paper 155,000,000 155,000,000 67,000,000

ITC Holdings

Interest Rate Swaps

Line of Credit Facilities and Other Debt, Total Amount Outstanding $ 39,000,000 39,000,000 $ 37,000,000

Interest Rate Swap [Member]

Interest Rate Swaps

Derivative, Term of Contract 5 years 5 years 5 years

Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value, Recurring [Member]

Interest Rate Swaps

Derivative Asset, Fair Value, Gross Liability $ 2,000,000 $ 2,000,000

v3.22.0.1

DEBT Revolving Credit Agreements (Details)
12 Months Ended

Dec. 31, 2021

USD ($)

Line of Credit Facility

Total available capacity $ 900,000,000

Outstanding balance 329,000,000 ^[1]

Unused capacity 571,000,000

ITC Holdings Corp.

Line of Credit Facility

Total available capacity 400,000,000

Outstanding balance 39,000,000 ^[1]

Unused capacity $ 361,000,000 ^[2]

Weighted average interest rate 1.40%

Commitment fee rate 0.175% ^[3]

ITCTransmission

Line of Credit Facility

Total available capacity $ 100,000,000

Outstanding balance 88,000,000 ^[1]

Unused capacity $ 12,000,000

Weighted average interest rate 1.10%

Commitment fee rate 0.10% ^[3]

METC

Line of Credit Facility

Total available capacity $ 100,000,000

Outstanding balance 30,000,000 ^[1]

Unused capacity $ 70,000,000

Weighted average interest rate 1.10%

Commitment fee rate 0.10% ^[3]

ITC Midwest

Line of Credit Facility

Total available capacity $ 225,000,000

Outstanding balance 139,000,000 ^[1]

Unused capacity $ 86,000,000

Weighted average interest rate 1.10%

Commitment fee rate 0.10% ^[3]

ITC Great Plains

Line of Credit Facility

Total available capacity $ 75,000,000

Outstanding balance 33,000,000 ^[1]

Unused capacity $ 42,000,000

Weighted average interest rate 1.10%

Commitment fee rate 0.10% ^[3]

[1] Included within long-term debt in the consolidated statements of financial position.

[2] ITC Holdings’ revolving credit agreement may be used for general corporate purposes, including to repay commercial paper issued pursuant to the commercial paper program described above, if necessary. While outstanding commercial paper does not reduce available capacity under ITC Holdings’ revolving credit agreement, the unused capacity under this agreement adjusted for the commercial paper outstanding was $206 million as of December 31, 2021.

[3] Calculation based on the average daily unused commitments, subject to adjustment based on the borrower’s credit rating.

v3.22.0.1

INCOME TAXES Income Tax Reconciliation (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Effective Income Tax Rate Reconciliation [Line Items]

Income tax expense at statutory rate ^[1] $ 112 $ 114 $ 118

State income taxes (net of federal benefit) ^[2] 24 28 22

AFUDC equity (5) (4) (5)

Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount (9) (2) (2)

Deferred Tax Assets, Valuation Allowance 4 0 0

Other - net 1 0 (1) ^[3]

Total income tax provision $ 127 $ 136 $ 132

Document Period End Date Dec. 31, 2021

Effective Income Tax Rate Reconciliation, Percent 23.80% 25.00% 23.60%

Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00% 21.00%

[1] $64 million

[2] $64 million

[3]
Our effective tax rate varied from the statutory federal income tax rate due to differences between the book and tax treatment of various transactions as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Income tax expense at 21% federal statutory rate $ 112 $ 114 $ 118
State income taxes (net of federal benefit) 24 28 22
AFUDC equity (5) (4) (5)
Revaluation of deferred federal income taxes (a) (9) (2) (2)
Valuation allowance 4 — —
Other, net 1 — (1)
Total income tax provision $ 127 $ 136 $ 132
____________________________
(a)Amount for the year ended December 31, 2021 is related to the change in our amortization method associated with excess deferred tax liabilities. Refer to discussion in Note 6 under “Income Taxes Refundable Related to Implementation of the TCJA”.

v3.22.0.1

INCOME TAXES Components of Income Tax Provision (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Effective Income Tax Rate Reconciliation [Line Items]

Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ 1 $ 0 $ (1) ^[1]

Effective Income Tax Rate Reconciliation, Percent 23.80% 25.00% 23.60%

Document Period End Date Dec. 31, 2021

Current income tax (benefit) expense $ 0 $ (2) $ (3) ^[2]

Total income tax provision $ 127 $ 136 $ 132

[1]
Our effective tax rate varied from the statutory federal income tax rate due to differences between the book and tax treatment of various transactions as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Income tax expense at 21% federal statutory rate $ 112 $ 114 $ 118
State income taxes (net of federal benefit) 24 28 22
AFUDC equity (5) (4) (5)
Revaluation of deferred federal income taxes (a) (9) (2) (2)
Valuation allowance 4 — —
Other, net 1 — (1)
Total income tax provision $ 127 $ 136 $ 132
____________________________
(a)Amount for the year ended December 31, 2021 is related to the change in our amortization method associated with excess deferred tax liabilities. Refer to discussion in Note 6 under “Income Taxes Refundable Related to Implementation of the TCJA”.

[2]
Our effective tax rate varied from the statutory federal income tax rate due to differences between the book and tax treatment of various transactions as follows:
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Income tax expense at 21% federal statutory rate $ 112 $ 114 $ 118
State income taxes (net of federal benefit) 24 28 22
AFUDC equity (5) (4) (5)
Revaluation of deferred federal income taxes (a) (9) (2) (2)
Valuation allowance 4 — —
Other, net 1 — (1)
Total income tax provision $ 127 $ 136 $ 132
____________________________
(a)Amount for the year ended December 31, 2021 is related to the change in our amortization method associated with excess deferred tax liabilities. Refer to discussion in Note 6 under “Income Taxes Refundable Related to Implementation of the TCJA”.

v3.22.0.1

INCOME TAXES Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Deferred Tax Assets and Liabilities [Line Items]

Deferred Income Tax Expense (Benefit) $ 127 $ 138 $ 135

Property, plant and equipment (1,274) (1,156)

Federal income tax NOLs and other credits 49 85

Goodwill (145) (139)

Deferred Tax Assets, Other 9 8

Pension and postretirement liabilities 22 20

State income tax NOLs (net of federal benefit) 57 58

Net deferred tax liabilities (1,161) (1,013)

Gross deferred income tax liabilities (1,434) (1,333)

Gross deferred income tax assets 277 320

Deferred Tax Assets, Valuation Allowance (4) 0 $ 0

Regulatory liabilities 619 612

Regulatory assets 190 212

True up adjustment principal and interest

Deferred Tax Assets and Liabilities [Line Items]

Revenue Accruals And Deferrals Including Accrued Interest 0 (14)

ADIT Deferral

Deferred Tax Assets and Liabilities [Line Items]

Deferred tax liabilities, regulatory assets ^[1] (3) (5)

Regulatory liability gross up - TCJA

Deferred Tax Assets and Liabilities [Line Items]

Deferred Tax Liabilities, Regulatory Assets and Liabilities 131 134

METC | Regulatory Deferrals

Deferred Tax Assets and Liabilities [Line Items]

Deferred tax liabilities, regulatory assets ^[1] $ (3) $ (4)

[1] Described in Note 6

v3.22.0.1

INCOME TAXES INCOME TAXES Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Operating Loss Carryforwards [Line Items]

Effective Income Tax Rate Reconciliation, Percent 23.80% 25.00% 23.60%

Deferred Tax Assets, Valuation Allowance $ (4) $ 0 $ 0

v3.22.0.1

FAIR VALUE MEASUREMENTS Assets Measured at Fair Value Subject to Three-Tier Hierarchy (Details) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Fair Value, Assets and Liabilities Measured on Recurring Basis

Book value of revolving credit agreements and term loan credit agreements $ 329 $ 198

Fair Value, Inputs, Level 1

Fair Value, Assets and Liabilities Measured on Recurring Basis

Total - assets 63 63

Cash Equivalents 1

Fair Value, Inputs, Level 2

Fair Value, Assets and Liabilities Measured on Recurring Basis

Total - assets 2

Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2

Fair Value, Assets and Liabilities Measured on Recurring Basis

Total - assets 0

Mutual fund - fixed income securities [Member] | Fair Value, Inputs, Level 1

Fair Value, Assets and Liabilities Measured on Recurring Basis

Equity Securities, FV-NI 51 52

Mutual fund - equity securities [Member] | Fair Value, Inputs, Level 1

Fair Value, Assets and Liabilities Measured on Recurring Basis

Equity Securities, FV-NI 12 $ 10

Interest Rate Swap [Member] | Fair Value, Inputs, Level 2

Fair Value, Assets and Liabilities Measured on Recurring Basis

Equity Securities, FV-NI $ 2

v3.22.0.1

FAIR VALUE MEASUREMENTS Additional Information (Details) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Fair Value, Assets and Liabilities Measured on Recurring Basis

Fair value of long-term debt and debt maturing within one year, excluding revolving and term loan credit agreements and commercial paper $ 6,995 $ 7,119

Book value of long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving and term loan credit agreements and commercial paper 6,179 6,097

Book value of revolving credit agreements and term loan credit agreements $ 329 $ 198

v3.22.0.1

RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Net Defined Benefit Cost Components (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Defined Benefit Plan Disclosure

Increase (Decrease) in Regulatory Liabilities $ (1)

Defined Benefit Plans

Defined Benefit Plan Disclosure

Service cost 9 $ 8 $ 7

Interest cost 3 4 5

Expected return on plan assets (6) (6) (5)

Amortization of unrecognized loss 1 1 1

Net cost 7 7 8

Defined Benefit Plan, Benefit Obligation, Payment for Settlement 2 0

Other Postretirement Benefits Plan

Defined Benefit Plan Disclosure

Service cost 11 11 9

Interest cost 3 4 4

Defined Benefit Plan, Plan Amendment [Abstract] 0 2

Expected return on plan assets (6) (5) (4)

Amortization of unrecognized loss 0 0

Net cost 8 10 $ 9

Increase (Decrease) in Regulatory Liabilities (31)

Defined Benefit Plan, Benefit Obligation, Payment for Settlement 0 0

Other Postretirement Benefits Plan | Net Prior Service Credit

Defined Benefit Plan Disclosure

Increase (Decrease) in Regulatory Liabilities 2 $ 2

Other Postretirement Benefits Plan | Net Actuarial Loss

Defined Benefit Plan Disclosure

Increase (Decrease) in Regulatory Liabilities $ (29)

v3.22.0.1

RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Assumptions Used (Details)
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Defined Benefit Plans

Benefit Obligation Assumptions

Discount rate 2.86% 2.49% 3.27%

Annual rate of salary increases 4.00% 4.00% 4.00%

Benefit Cost Assumptions

Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate 4.00% 4.00% 4.00%

Expected long-term rate of return on plan assets 5.70% 6.00% 6.60%

Defined Benefit Plans | Retirement Plan Name, Other

Benefit Cost Assumptions

Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate 4.00% 4.00% 4.50%

Annual rate of salary increases 4.00% 4.00% 4.00%

Other Postretirement Benefits Plan

Benefit Obligation Assumptions

Discount rate 3.14% 2.94% 3.61%

Annual rate of salary increases 4.00% 4.00% 4.00%

Assumed Health Care Cost Trend Rates

Health care cost trend rate 5.75% 6.00% 6.25%

Ultimate health care cost trend rate 5.00% 5.00% 5.00%

Year that the ultimate trend rate is reached 2025 2025 2025

Annual rate of increase in dental benefit costs 4.50% 4.50% 4.50%

Other Postretirement Benefits Plan | Retirement Plan Name, Other

Benefit Cost Assumptions

Annual rate of salary increases 4.00% 4.00% 4.00%

Expected long-term rate of return on plan assets 4.30% 4.50% 5.00%

Assumed Health Care Cost Trend Rates

Health care cost trend rate 6.00% 6.25% 6.50%

Ultimate health care cost trend rate 5.00% 5.00% 5.00%

Year that the ultimate trend rate is reached 2025 2025 2025

Service Costs | Defined Benefit Plans

Benefit Cost Assumptions

Discount rate 2.77% 3.47% 4.42%

Service Costs | Other Postretirement Benefits Plan

Benefit Cost Assumptions

Discount rate 3.20% 3.80% 4.58%

Interest Costs | Defined Benefit Plans

Benefit Cost Assumptions

Discount rate 1.93% 2.91% 3.99%

Interest Costs | Other Postretirement Benefits Plan

Benefit Cost Assumptions

Discount rate 2.50% 3.30% 4.28%

v3.22.0.1

RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Projected Benefit Payments (Details)
$ in Millions

Dec. 31, 2021

USD ($)

Defined Benefit Plans

Defined Benefit Plan Disclosure

2018 $ 8

2019 9

2020 9

2021 10

2022 10

2023 through 2027 63

Other Postretirement Benefits Plan

Defined Benefit Plan Disclosure

2018 2

2019 2

2020 2

2021 3

2022 3

2023 through 2027 $ 22

v3.22.0.1

RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Defined Benefit Plan Disclosure

Defined Contribution Plan, Cost $ 6 $ 6 $ 5

Defined Benefit Plans

Defined Benefit Plan Disclosure

Employer contributions 4 4 4

Expected Future Employer Contributions, Next Fiscal Year 3

Other non-current assets 13 6

Supplemental Benefit Plans

Defined Benefit Plan Disclosure

Employer contributions 3 3 1

Other non-current assets 54 56

Other Postretirement Benefits Plan

Defined Benefit Plan Disclosure

Employer contributions 8 $ 10 $ 9

Expected Future Employer Contributions, Next Fiscal Year $ 8

v3.22.0.1

STOCKHOLDER'S EQUITY Changes in Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Balance at the beginning of period $ (8) $ 7 $ 4

Derivatives Instruments [Abstract]

Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax ^[1] (4) (3) (1)

Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax 2 (18) 2

Other Comprehensive Income (Loss), Gain (Loss) on Derivatives Qualifying as Hedges, Tax 1 8 1

TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX 6 (15) 3

Balance at the end of period (2) (8) 7

Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax $ 2 $ 1 $ 1

[1] The reclassification of the net loss relating to interest rate cash flow hedges is reported in interest expense on a pre-tax basis

v3.22.0.1

STOCKHOLDER'S EQUITY Additional Information (Details) - Scenario, Forecast
$ in Millions
12 Months Ended

Dec. 31, 2022

USD ($)

Accumulated Other Comprehensive Income (Loss) [Line Items]

Other Comprehensive Income (Loss), Tax (less than $1 million) $ 2

Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax $ 4

v3.22.0.1

SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Allocation of Recognized Period Costs (Details) - 2017 Omnibus Plan - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]

Amounts capitalized to property, plant and equipment $ 9 $ 7 $ 8

Total share-based compensation 43 32 40

Total tax benefit recognized in the consolidated statements of operations 9 8 8

Operation and maintenance expenses

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]

Share-based Compensation Expense 2 2 2

General and administrative expenses

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]

Share-based Compensation Expense $ 32 $ 23 $ 30

v3.22.0.1

SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Service Based Units (Details) - Service Based Units (SBUs) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding $ 22 $ 19

2017 Omnibus Plan

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding $ 32 28

PBUs or SBUs at December 31, 2018 687,710

Granted 247,181

Vested (219,605)

Forfeited (25,474)

PBUs or SBUs at December 31, 2019 689,812

Accounts Payable and Accrued Liabilities [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding $ 11 9

Other Liabilities [Member]

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding $ 11 $ 10

v3.22.0.1

RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended

Jan. 27, 2022

Dec. 31, 2019

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Apr. 30, 2020

Related Party Transaction [Line Items]

Intercompany receivables (less than $1 million) $ 2 $ 1

Intercompany payables (less than $1 million) 1 1

Related Party Charges for Corporate expenses recorded in general and administrative expense (less than $1 million) $ 10

Related Party Transaction, Other Revenues from Transactions with Related Party (2016 less than $1 million) 2 1

Payments of Dividends $ 250 232 330 $ 250

Revenue from Related Parties $ 2 $ 2

Intercompany tax payable to subsidiaries $ 2

Subsequent Event

Related Party Transaction [Line Items]

Payments of Dividends $ 64

v3.22.0.1

SEGMENT INFORMATION (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Segment Reporting Information

Operating revenues $ 1,349 $ 1,298 $ 1,327

Depreciation and amortization 232 219 203

Interest expense, net 251 240 224

Income (loss) before income taxes 533 543 560

Total income tax provision 127 136 132

NET INCOME 406 407 428

Property, plant and equipment, net 9,961 9,327 8,582

Goodwill 950 950 950

Total assets ^[1] 11,445 10,825 10,058

Capital expenditures 834 885 865

Regulated Operating Subsidiaries

Segment Reporting Information

Operating revenues 1,386 1,333 1,358

Depreciation and amortization 231 218 201

Interest expense, net 123 118 105

Income (loss) before income taxes 691 683 710

Total income tax provision 173 179 179

NET INCOME 518 504 531

Property, plant and equipment, net 9,954 9,319 8,573

Goodwill 950 950 950

Total assets 11,317 10,710 9,946

Capital expenditures 841 886 874

ITC Holdings and Other

Segment Reporting Information

Operating revenues 1 1 0

Depreciation and amortization 1 1 2

Interest expense, net 129 122 119

Income (loss) before income taxes (158) (140) (150)

Total income tax provision (46) (43) (47)

NET INCOME 406 407 428

Property, plant and equipment, net 7 8 9

Total assets 6,134 5,830 5,402

Capital expenditures 0 0 0

Reconciliations and Eliminations

Segment Reporting Information

Operating revenues (38) (36) (31)

Interest expense, net (1)

NET INCOME (518) (504) (531)

Total assets (6,006) (5,715) (5,290)

Capital expenditures $ (7) $ (1) $ (9)

[1] Reconciliation of total assets results primarily from differences in the netting of deferred tax assets and liabilities in our segments as compared to the classification in our consolidated statements of financial position.

v3.22.0.1

SUPPLEMENTARY QUARTERLY FINANCIAL INFORMATION (Unaudited) (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Selected Quarterly Financial Information [Abstract]

OPERATING REVENUES $ 1,349 $ 1,298 $ 1,327

Operating income 749 753 755

NET INCOME $ 406 $ 407 $ 428

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Financial Position (Parent Company Only) (Details) - USD ($)
$ / shares in Units, $ in Millions

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Current assets

Cash and cash equivalents $ 5 $ 4 $ 4 $ 6

Accounts receivable from subsidiaries 2 1

Prepaid and other current assets 18 12

Total current assets 217 224

Other assets

Other assets 101 83

TOTAL ASSETS ^[1] 11,445 10,825 10,058

Current liabilities

Accounts payable 127 130

Accrued compensation 72 55

Accrued interest 56 55

Other current liabilities 16 18

Total current liabilities 1,047 437

Accrued pension and postretirement liabilities 52 59

Other liabilities 55 50

Long-term debt (net of deferred financing fees and discount of $17 and $21, respectively) 6,009 6,295

STOCKHOLDER’S EQUITY

Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December 31, 2021 and 2020 892 892

Retained earnings 1,584 1,410

Accumulated other comprehensive loss (2) (8) 7 4

Total stockholder’s equity 2,474 2,294 2,232 2,051

TOTAL LIABILITIES AND STOCKHOLDER’S EQUITY 11,445 10,825

Balance Sheet Additional Disclosures

Deferred financing fees and discount $ 39 $ 43

Common stock, without par value $ 0 $ 0

Common stock, shares authorized 235,000,000 235,000,000

Common stock, shares issued 224,203,112 224,203,112

Common stock, shares outstanding 224,203,112 224,203,112

Liabilities $ 8,971 $ 8,531

ITC Holdings

Current assets

Cash and cash equivalents 3 2 $ 2 $ 3

Accounts receivable from subsidiaries 20 9

Intercompany tax receivable from subsidiaries 16 8

Prepaid and other current assets 3 0

Advances to Affiliate 50 0

Total current assets 92 19

Other assets

Investment in subsidiaries 5,784 5,496

Deferred Income Tax Assets, Net 142 160

Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures 4 54

Other assets 112 101

Total other assets 6,042 5,811

TOTAL ASSETS 6,134 5,830

Current liabilities

Accrued compensation 72 55

Accrued interest 23 23

Debt maturing within one year 654 67

Other current liabilities 8 8

Total current liabilities 757 153

Accrued pension and postretirement liabilities 52 59

Other liabilities 78 58

Long-term debt (net of deferred financing fees and discount of $17 and $21, respectively) 2,773 3,266

STOCKHOLDER’S EQUITY

Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December 31, 2021 and 2020 892 892

Retained earnings 1,584 1,410

Accumulated other comprehensive loss (2) (8)

Total stockholder’s equity 2,474 2,294

TOTAL LIABILITIES AND STOCKHOLDER’S EQUITY 6,134 5,830

Balance Sheet Additional Disclosures

Deferred financing fees and discount $ 17 $ 21

Common stock, without par value $ 0 $ 0

Common stock, shares authorized 235,000,000

Common stock, shares issued 224,203,112 224,203,112

Common stock, shares outstanding 224,203,112 224,203,112

Liabilities $ 3,660 $ 3,536

[1] Reconciliation of total assets results primarily from differences in the netting of deferred tax assets and liabilities in our segments as compared to the classification in our consolidated statements of financial position.

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Comprehensive Income (Parent Company Only) (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Condensed Financial Statements, Captions [Line Items]

Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax $ 2 $ 7 $ 1

Other income (expense), net 1 0 0

General and administrative expense (128) (115) (138)

Taxes other than income taxes (133) (124) (118)

Interest expense (251) (240) (224)

INCOME BEFORE INCOME TAXES 533 543 560

INCOME TAX PROVISION 127 136 132

NET INCOME 406 407 428

TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX 6 (15) 3

TOTAL COMPREHENSIVE INCOME 412 392 431

ITC Holdings

Condensed Financial Statements, Captions [Line Items]

Other income (expense), net 3 5 5

General and administrative expense (30) (20) (25)

Taxes other than income taxes (2) 1 2

Interest expense (129) (122) (119)

INCOME BEFORE INCOME TAXES (158) (138) (141)

INCOME TAX PROVISION (46) (43) (44)

Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total (112) (95) (97)

EQUITY IN SUBSIDIARIES’ NET EARNINGS 518 502 525

NET INCOME 406 407 428

TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX 6 (15) 3

TOTAL COMPREHENSIVE INCOME $ 412 $ 392 $ 431

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Cash Flows (Parent Company) (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended

Dec. 31, 2019

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

CASH FLOWS FROM OPERATING ACTIVITIES

NET INCOME $ 406 $ 407 $ 428

Adjustments to reconcile net income to net cash used in operating activities:

Other 6 4 10

Changes in assets and liabilities, exclusive of changes shown separately:

Accrued taxes 3 (3) 3

Net cash provided by operating activities 785 632 629

CASH FLOWS FROM INVESTING ACTIVITIES

Other (5) 5 1

Net cash used in investing activities (824) (878) (854)

CASH FLOWS FROM FINANCING ACTIVITIES

Issuance of long-term debt 75 1,030 175

Borrowings under revolving credit agreements 1,175 1,495 1,090

Borrowings under term loan credit agreements 0 275 200

Net issuance (repayment) of commercial paper 88 (133) 200

Retirement of long-term debt — including extinguishment of debt costs 0 (35) (203)

Repayments of revolving credit agreement (1,044) (1,596) (999)

Repayments of term loan credit agreements 0 (475) 0

Dividends to ITC Investment Holdings $ (250) (232) (330) (250)

Other (1) (12) (3)

Net cash provided by financing activities 40 246 221

NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 1 0 (4)

CASH, CASH EQUIVALENTS AND RESTRICTED CASH — Beginning of period 6 6 10

CASH, CASH EQUIVALENTS AND RESTRICTED CASH — End of period 6 7 6 6

Employee Benefits and Share-based Compensation 34 25 32

Interest Rate Swap [Member]

CASH FLOWS FROM FINANCING ACTIVITIES

Payments for (Proceeds from) Hedge, Financing Activities 0 (23) 0

ITC Holdings

CASH FLOWS FROM OPERATING ACTIVITIES

NET INCOME 406 407 428

Adjustments to reconcile net income to net cash used in operating activities:

Equity in subsidiaries' earnings (518) (502) (525)

Dividends from subsidiaries 10 3 3

Deferred and other income taxes (41) (46) (51)

Net intercompany tax payments from (to) subsidiaries 56 33 14

Other 4 2 6

Changes in assets and liabilities, exclusive of changes shown separately:

Accounts receivable from subsidiaries (2) 9 9

Intercompany tax receivable from subsidiaries (9) (4) 11

Income tax receivable 0 0 1

Accrued compensation 4 (12) 22

Other current and non-current assets and liabilities, net (2) (3) 0

Net cash provided by operating activities (67) (98) (64)

CASH FLOWS FROM INVESTING ACTIVITIES

Equity contributions to subsidiaries 51 88 120

Return of capital from subsidiaries 259 228 239

Payments to Fund Long-term Loans to Related Parties 0 (50) 0

Other 1 (2) (1)

Net cash used in investing activities 209 88 118

CASH FLOWS FROM FINANCING ACTIVITIES

Issuance of long-term debt 0 700 0

Borrowings under revolving credit agreements 93 293 72

Borrowings under term loan credit agreements 0 200 200

Net issuance (repayment) of commercial paper 88 (133) 200

Retirement of long-term debt — including extinguishment of debt costs 0 0 (203)

Repayments of revolving credit agreement (91) (290) (75)

Repayments of term loan credit agreements 0 (400) 0

Dividends to ITC Investment Holdings (232) (330) (250)

Other 1 (7) 0

Net cash provided by financing activities (141) 10 (56)

NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH 1 0 (2)

CASH, CASH EQUIVALENTS AND RESTRICTED CASH — Beginning of period 2 2 4

CASH, CASH EQUIVALENTS AND RESTRICTED CASH — End of period $ 2 3 2 2

Employee Benefits and Share-based Compensation 25 15 18

Parent | Interest Rate Swap [Member]

CASH FLOWS FROM FINANCING ACTIVITIES

Payments for (Proceeds from) Hedge, Financing Activities $ 0 $ (23) $ 0

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT General (Details) - Regulated Operating Subsidiaries

Dec. 31, 2021

Condensed Financial Statements, Captions [Line Items]

FERC approved capital structure, equity percentage 60.00%

FERC approved capital structure, debt percentage 40.00%

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Debt (Details) - USD ($)
$ in Millions

Dec. 31, 2021

Dec. 31, 2020

Maturities of Debt

2019 $ 655

2020 250

2021 804

2022 0

2023 400

2027 and thereafter 4,593

Fair Value Disclosures [Abstract]

Fair value of long-term debt and debt maturing within one year, excluding revolving and term loan credit agreements and commercial paper 6,995 $ 7,119

Book value of long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving and term loan credit agreements and commercial paper 6,179 6,097

Book value of revolving credit agreements and term loan credit agreements 329 198

Commercial Paper 155 67

ITC Holdings

Maturities of Debt

2019 655

2020 250

2021 439

2022 0

2023 400

2027 and thereafter 1,700

Total 3,444

Fair Value Disclosures [Abstract]

Fair value of long-term debt and debt maturing within one year, excluding revolving and term loan credit agreements and commercial paper 3,516 3,670

Book value of long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving and term loan credit agreements and commercial paper 3,233 3,229

Book value of revolving credit agreements and term loan credit agreements 39 37

ITC Holdings Corp.

Fair Value Disclosures [Abstract]

Commercial Paper $ 155 ^[1] $ 67

[1] As of December 31, 2021 and 2020 there was $654 million and $67 million, respectively, net of unamortized deferred financing fees and discount, of debt included within debt maturing within one year in the consolidated statements of financial position

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Related-party Transactions (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Sep. 21, 2020

Related Party Transactions Parent Company [Abstract]

Schedule of Related Party Transactions [Table Text Block] ^[1]
Year Ended December 31,
(In millions of USD) 2021 2020 2019
Net income tax payments (to) from: (a)
ITCTransmission $ 24 $ 17 $ 7
METC 15 9 4
ITC Midwest 10 1 3
ITC Great Plains 6 6 (1)
ITC Interconnection 1 — 1
____________________________
(a)The net income tax payments were pursuant to intercompany tax sharing arrangements, and the total of these tax payments is presented as a net cash outflow or inflow from operating activities in the condensed parent company statements of cash flows. Other reconciling items between the parent company and the consolidated tax liabilities are presented as deferred and other income taxes in the adjustments to reconcile net income to net cash provided by operating activities. Additionally, ITC Holdings paid its subsidiaries for NOLs utilized by the consolidated group.

Subsidiaries | ITCTransmission

Condensed Financial Statements, Captions [Line Items]

Tax payments (to) from subsidiary under intercompany tax sharing arrangement ^[1] $ 24 $ 17 $ 7

Subsidiaries | METC

Condensed Financial Statements, Captions [Line Items]

Tax payments (to) from subsidiary under intercompany tax sharing arrangement ^[1] 15 9 4

Subsidiaries | ITC Midwest

Condensed Financial Statements, Captions [Line Items]

Tax payments (to) from subsidiary under intercompany tax sharing arrangement ^[1] 10 1 3

Subsidiaries | ITC Great Plains

Condensed Financial Statements, Captions [Line Items]

Tax payments (to) from subsidiary under intercompany tax sharing arrangement ^[1] 6 6 (1)

Subsidiaries | ITC Interconnection LLC [Member]

Condensed Financial Statements, Captions [Line Items]

Tax payments (to) from subsidiary under intercompany tax sharing arrangement 1 0 1

ITC Holdings

Condensed Financial Statements, Captions [Line Items]

Equity contributions to subsidiaries (51) (88) (120)

Interest and Fee Income, Other Loans 1

Dividends from subsidiaries 10 3 3

Payments to Fund Long-term Loans to Related Parties $ 0 (50) 0

Intercompany Loans, Description 4 million

Return of capital from subsidiaries $ 259 228 239

Related Party Transaction [Line Items]

Payments to Fund Long-term Loans to Related Parties $ 0 $ (50) $ 0

Notes Receivable, Related Parties, Noncurrent $ 50

[1] The net income tax payments were pursuant to intercompany tax sharing arrangements, and the total of these tax payments is presented as a net cash outflow or inflow from operating activities in the condensed parent company statements of cash flows. Other reconciling items between the parent company and the consolidated tax liabilities are presented as deferred and other income taxes in the adjustments to reconcile net income to net cash provided by operating activities. Additionally, ITC Holdings paid its subsidiaries for NOLs utilized by the consolidated group

v3.22.0.1

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Supplemental Financial Information (Details) - USD ($)
$ in Millions
12 Months Ended

Dec. 31, 2021

Dec. 31, 2020

Dec. 31, 2019

Dec. 31, 2018

Condensed Financial Statements, Captions [Line Items]

Cash and cash equivalents $ 5 $ 4 $ 4 $ 6

Restricted Cash, included in other non-current assets 2 2 2 4

Total cash, cash equivalents and restricted cash 7 6 6 10

Interest Paid, Excluding Capitalized Interest, Operating Activities 237 236 228

Income Taxes Paid 0 2 0

Income tax refunds received 0 2 3

ITC Holdings

Condensed Financial Statements, Captions [Line Items]

Cash and cash equivalents 3 2 2 3

Restricted Cash, included in other non-current assets 0 0 0 1

Total cash, cash equivalents and restricted cash 3 2 2 $ 4

Interest Paid, Excluding Capitalized Interest, Operating Activities 119 116 117

Income Taxes Paid 0 2 0

Income tax refunds received $ 0 $ 2 $ 3

{
 "instance": {
  "itc-20211231.htm": {
   "axisCustom": 7,
   "axisStandard": 33,
   "contextCount": 459,
   "dts": {
    "calculationLink": {
     "local": [
      "itc-20211231_cal.xml"
     ]
    },
    "definitionLink": {
     "local": [
      "itc-20211231_def.xml"
     ]
    },
    "inline": {
     "local": [
      "itc-20211231.htm"
     ]
    },
    "labelLink": {
     "local": [
      "itc-20211231_lab.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "itc-20211231_pre.xml"
     ]
    },
    "schema": {
     "local": [
      "itc-20211231.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/2006/ref-2006-02-27.xsd",
      "http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
      "http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
      "https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd",
      "https://www.xbrl.org/dtr/type/2020-01-21/types.xsd",
      "https://xbrl.fasb.org/srt/2021/elts/srt-2021-01-31.xsd",
      "https://xbrl.fasb.org/srt/2021/elts/srt-roles-2021-01-31.xsd",
      "https://xbrl.fasb.org/srt/2021/elts/srt-types-2021-01-31.xsd",
      "https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd",
      "https://xbrl.fasb.org/us-gaap/2021/elts/us-roles-2021-01-31.xsd",
      "https://xbrl.fasb.org/us-gaap/2021/elts/us-types-2021-01-31.xsd",
      "https://xbrl.sec.gov/country/2021/country-2021.xsd",
      "https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd",
      "https://xbrl.sec.gov/stpr/2021/stpr-2021.xsd"
     ]
    }
   },
   "elementCount": 783,
   "entityCount": 1,
   "hidden": {
    "http://fasb.org/us-gaap/2021-01-31": 104,
    "http://www.itctransco.com/20211231": 11,
    "http://xbrl.sec.gov/dei/2021q4": 7,
    "total": 122
   },
   "keyCustom": 53,
   "keyStandard": 451,
   "memberCustom": 90,
   "memberStandard": 43,
   "nsprefix": "itc",
   "nsuri": "http://www.itctransco.com/20211231",
   "report": {
    "R1": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:IcfrAuditorAttestationFlag",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "true",
     "longName": "0001001 - Document - Document and Entity Information Document",
     "role": "http://www.itctransco.com/role/DocumentandEntityInformationDocument",
     "shortName": "Document and Entity Information Document",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:IcfrAuditorAttestationFlag",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R10": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1308317 - Statement - SUPPLEMENTAL FIANNCIAL INFORMATION",
     "role": "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATION",
     "shortName": "SUPPLEMENTAL FIANNCIAL INFORMATION",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R11": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1409445 - Statement - SUPPLEMENTAL FIANNCIAL INFORMATION Restricted Cash Reconciliation",
     "role": "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATIONRestrictedCashReconciliation",
     "shortName": "SUPPLEMENTAL FIANNCIAL INFORMATION Restricted Cash Reconciliation",
     "subGroupType": "",
     "uniqueAnchor": null
    },
    "R12": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:InterestPaidNet",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1410446 - Statement - SUPPLEMENTAL FINANCIAL INFORMATION Supplemental Cash Flow Information",
     "role": "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation",
     "shortName": "SUPPLEMENTAL FINANCIAL INFORMATION Supplemental Cash Flow Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:CapitalExpendituresIncurredButNotYetPaid",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R13": {
     "firstAnchor": null,
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2102102 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS",
     "role": "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTS",
     "shortName": "RECENT ACCOUNTING PRONOUNCEMENTS",
     "subGroupType": "",
     "uniqueAnchor": null
    },
    "R14": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SignificantAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2107103 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES",
     "role": "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIES",
     "shortName": "SIGNIFICANT ACCOUNTING POLICIES",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SignificantAccountingPoliciesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R15": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2110104 - Disclosure - REVENUE",
     "role": "http://www.itctransco.com/role/REVENUE",
     "shortName": "REVENUE",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R16": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2113105 - Disclosure - ACCOUNTS RECEIVABLE",
     "role": "http://www.itctransco.com/role/ACCOUNTSRECEIVABLE",
     "shortName": "ACCOUNTS RECEIVABLE",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LoansNotesTradeAndOtherReceivablesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R17": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PublicUtilitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2116106 - Disclosure - REGULATORY MATTERS",
     "role": "http://www.itctransco.com/role/REGULATORYMATTERS",
     "shortName": "REGULATORY MATTERS",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PublicUtilitiesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R18": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2121107 - Disclosure - REGULATORY ASSETS AND LIABILITIES",
     "role": "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIES",
     "shortName": "REGULATORY ASSETS AND LIABILITIES",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R19": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2126108 - Disclosure - GOODWILL AND INTANGIBLE ASSETS",
     "role": "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETS",
     "shortName": "GOODWILL AND INTANGIBLE ASSETS",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:GoodwillAndIntangibleAssetsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R2": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:AuditorLocation",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "document",
     "isDefault": "false",
     "longName": "0002002 - Document - Audit Information",
     "role": "http://www.itctransco.com/role/AuditInformation",
     "shortName": "Audit Information",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:AuditorLocation",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R20": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2130109 - Disclosure - PROPERTY, PLANT AND EQUIPMENT",
     "role": "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENT",
     "shortName": "PROPERTY, PLANT AND EQUIPMENT",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R21": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2136111 - Disclosure - DEBT",
     "role": "http://www.itctransco.com/role/DEBT",
     "shortName": "DEBT",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DebtDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R22": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2143112 - Disclosure - INCOME TAXES",
     "role": "http://www.itctransco.com/role/INCOMETAXES",
     "shortName": "INCOME TAXES",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R23": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2149113 - Disclosure - FAIR VALUE MEASUREMENTS",
     "role": "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTS",
     "shortName": "FAIR VALUE MEASUREMENTS",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FairValueDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R24": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2153114 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUST",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R25": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2162115 - Disclosure - STOCKHOLDER'S EQUITY",
     "role": "http://www.itctransco.com/role/STOCKHOLDERSEQUITY",
     "shortName": "STOCKHOLDER'S EQUITY",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquityNoteDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R26": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2166116 - Disclosure - SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN",
     "role": "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLAN",
     "shortName": "SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R27": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "itc:JointlyOwnedUtilityPlantCoordinatedServicesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2172117 - Disclosure - JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES",
     "role": "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICES",
     "shortName": "JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "itc:JointlyOwnedUtilityPlantCoordinatedServicesTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R28": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2175118 - Disclosure - RELATED PARTY TRANSACTIONS",
     "role": "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONS",
     "shortName": "RELATED PARTY TRANSACTIONS",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RelatedPartyTransactionsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R29": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2178119 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES",
     "role": "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIES",
     "shortName": "COMMITMENTS AND CONTINGENT LIABILITIES",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommitmentsAndContingenciesDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R3": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1001003 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL POSITION",
     "role": "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
     "shortName": "CONSOLIDATED STATEMENTS OF FINANCIAL POSITION",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:InventoryNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R30": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SegmentReportingDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2182121 - Disclosure - SEGMENT INFORMATION",
     "role": "http://www.itctransco.com/role/SEGMENTINFORMATION",
     "shortName": "SEGMENT INFORMATION",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SegmentReportingDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R31": {
     "firstAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2188123 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANT",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R32": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ConsolidationPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2208201 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Policies)",
     "role": "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies",
     "shortName": "SIGNIFICANT ACCOUNTING POLICIES (Policies)",
     "subGroupType": "policies",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ConsolidationPolicyTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R33": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueRecognitionPolicyTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2211202 - Disclosure - REVENUE (Policies)",
     "role": "http://www.itctransco.com/role/REVENUEPolicies",
     "shortName": "REVENUE (Policies)",
     "subGroupType": "policies",
     "uniqueAnchor": null
    },
    "R34": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2314302 - Disclosure - ACCOUNTS RECEIVABLE (Tables)",
     "role": "http://www.itctransco.com/role/ACCOUNTSRECEIVABLETables",
     "shortName": "ACCOUNTS RECEIVABLE (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R35": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "itc:ScheduleofRegulatoryAssetsandLiabilitiesAssociatedwithRegulatedOperatingSubsidiariesFormulaRateRevenueAccrualsandDeferralsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2317303 - Disclosure - REGULATORY MATTERS (Tables)",
     "role": "http://www.itctransco.com/role/REGULATORYMATTERSTables",
     "shortName": "REGULATORY MATTERS (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "itc:ScheduleofRegulatoryAssetsandLiabilitiesAssociatedwithRegulatedOperatingSubsidiariesFormulaRateRevenueAccrualsandDeferralsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R36": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRegulatoryAssetsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2322304 - Disclosure - REGULATORY ASSETS AND LIABILITIES (Tables)",
     "role": "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESTables",
     "shortName": "REGULATORY ASSETS AND LIABILITIES (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRegulatoryAssetsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R37": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2327305 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables)",
     "role": "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSTables",
     "shortName": "GOODWILL AND INTANGIBLE ASSETS (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R38": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2331306 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Tables)",
     "role": "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTTables",
     "shortName": "PROPERTY, PLANT AND EQUIPMENT (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R39": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2337308 - Disclosure - DEBT (Tables)",
     "role": "http://www.itctransco.com/role/DEBTTables",
     "shortName": "DEBT (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfDebtTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R4": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1002004 - Statement - CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parentheticals)",
     "role": "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
     "shortName": "CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parentheticals)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": null
    },
    "R40": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2344309 - Disclosure - INCOME TAXES (Tables)",
     "role": "http://www.itctransco.com/role/INCOMETAXESTables",
     "shortName": "INCOME TAXES (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R41": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2350310 - Disclosure - FAIR VALUE MEASUREMENTS (Tables)",
     "role": "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSTables",
     "shortName": "FAIR VALUE MEASUREMENTS (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R42": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2354311 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST (Tables)",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfNetBenefitCostsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R43": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2363312 - Disclosure - STOCKHOLDER'S EQUITY (Tables)",
     "role": "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables",
     "shortName": "STOCKHOLDER'S EQUITY (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R44": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2367313 - Disclosure - SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN (Tables)",
     "role": "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables",
     "shortName": "SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R45": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfJointlyOwnedUtilityPlantsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2373314 - Disclosure - JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES (Tables)",
     "role": "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESTables",
     "shortName": "JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfJointlyOwnedUtilityPlantsTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R46": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "itc:ScheduleOfImpactsFromTheROEComplaintsTableTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2380316 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Tables)",
     "role": "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESTables",
     "shortName": "COMMITMENTS AND CONTINGENT LIABILITIES (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": null
    },
    "R47": {
     "firstAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2383318 - Disclosure - SEGMENT INFORMATION (Tables)",
     "role": "http://www.itctransco.com/role/SEGMENTINFORMATIONTables",
     "shortName": "SEGMENT INFORMATION (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R48": {
     "firstAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2396320 - Disclosure - SEC Schedule, Article 12-04, Condensed Financial Information of Registrant (Tables)",
     "role": "http://www.itctransco.com/role/SECScheduleArticle1204CondensedFinancialInformationofRegistrantTables",
     "shortName": "SEC Schedule, Article 12-04, Condensed Financial Information of Registrant (Tables)",
     "subGroupType": "tables",
     "uniqueAnchor": {
      "ancestors": [
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "lang": "en-US",
      "name": "itc:RelatedPartyEquityTransactionsTableTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R49": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i28c68863a7604e10b96d70c8fca6ac77_D20160419-20160420",
      "decimals": "3",
      "first": true,
      "lang": "en-US",
      "name": "itc:OwnershipPercentageofMinorityInvestorUponCompletionofMerger",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2401401 - Disclosure - GENERAL (Details)",
     "role": "http://www.itctransco.com/role/GENERALDetails",
     "shortName": "GENERAL (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i28c68863a7604e10b96d70c8fca6ac77_D20160419-20160420",
      "decimals": "3",
      "first": true,
      "lang": "en-US",
      "name": "itc:OwnershipPercentageofMinorityInvestorUponCompletionofMerger",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R5": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1003005 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME",
     "role": "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
     "shortName": "CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "itc:FormulaRateTrueUpRevenue",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R50": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i1c8bbfa57b36416bb0523eba8b494da2_I20201231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RestrictedCashNoncurrent",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2404402 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS Restricted Cash (Details)",
     "role": "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSRestrictedCashDetails",
     "shortName": "RECENT ACCOUNTING PRONOUNCEMENTS Restricted Cash (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R51": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:GeneralAndAdministrativeExpense",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2405403 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS Service Cost (Details)",
     "role": "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails",
     "shortName": "RECENT ACCOUNTING PRONOUNCEMENTS Service Cost (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R52": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DepreciationDepletionAndAmortization",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2409405 - Disclosure - SIGNIFICANT ACCOUNTING POLICIES (Details)",
     "role": "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails",
     "shortName": "SIGNIFICANT ACCOUNTING POLICIES (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DepreciationDepletionAndAmortization",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R53": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2412406 - Disclosure - REVENUE (Details)",
     "role": "http://www.itctransco.com/role/REVENUEDetails",
     "shortName": "REVENUE (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i522d05eebc0c4d5f88b6ffb5dd68f034_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R54": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountsReceivableNetCurrent",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2415407 - Disclosure - ACCOUNTS RECEIVABLE (Details)",
     "role": "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails",
     "shortName": "ACCOUNTS RECEIVABLE (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i1007064fcc204fefae470198b0d2184f_I20191231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:AccountsReceivableNetCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R55": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "itc:ScheduleOfChangesInRegulatoryAssetsAndLiabilitiesFormulaRateRevenueAccrualsAndDeferralsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i1c8bbfa57b36416bb0523eba8b494da2_I20201231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "itc:NetRegulatoryAssetLiabilityAssociatedwithRevenueAccrualsandDeferrals",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2418408 - Disclosure - REGULATORY MATTERS Changes in Regulatory Assets and Liabilities (Details)",
     "role": "http://www.itctransco.com/role/REGULATORYMATTERSChangesinRegulatoryAssetsandLiabilitiesDetails",
     "shortName": "REGULATORY MATTERS Changes in Regulatory Assets and Liabilities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "itc:ScheduleOfChangesInRegulatoryAssetsAndLiabilitiesFormulaRateRevenueAccrualsAndDeferralsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "itc:NetRefundsCollectionsOfRevenueDeferralsAndAccrualsIncludingInterest",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R56": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRegulatoryAssetsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RegulatoryAssetsCurrent",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2419409 - Disclosure - REGULATORY MATTERS Schedule of Regulatory Assets and Liabilities (Details)",
     "role": "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails",
     "shortName": "REGULATORY MATTERS Schedule of Regulatory Assets and Liabilities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R57": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "itc:TransmissionRateApplicablePeriod",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2420410 - Disclosure - REGULATORY MATTERS Additional Information (Details)",
     "role": "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
     "shortName": "REGULATORY MATTERS Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "itc:TransmissionRateApplicablePeriod",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R58": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRegulatoryAssetsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RegulatoryAssetsCurrent",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2423411 - Disclosure - REGULATORY ASSETS AND LIABILITIES Regulatory Assets (Details)",
     "role": "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
     "shortName": "REGULATORY ASSETS AND LIABILITIES Regulatory Assets (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRegulatoryAssetsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i77d9cb93dcb04ff8a1633caaefcb039e_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:RegulatoryAssetsNoncurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R59": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRegulatoryLiabilitiesTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:RegulatoryLiabilityCurrent",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2424412 - Disclosure - REGULATORY ASSETS AND LIABILITIES Regulatory Liabilities (Details)",
     "role": "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
     "shortName": "REGULATORY ASSETS AND LIABILITIES Regulatory Liabilities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRegulatoryLiabilitiesTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:RegulatoryLiabilities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R6": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "icfc01b52a90e410690c7b9c870785d84_I20181231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquity",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1004006 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY",
     "role": "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
     "shortName": "CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i991ccaaff7a74e12992b15546c444807_I20181231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:StockholdersEquity",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R60": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentPeriodEndDate",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2425413 - Disclosure - REGULATORY ASSETS AND LIABILITIES Additional Information (Details)",
     "role": "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
     "shortName": "REGULATORY ASSETS AND LIABILITIES Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i945a4f0b6bb849eeaf89cd5fd65fef3c_I20211231",
      "decimals": "3",
      "lang": "en-US",
      "name": "itc:StateIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R61": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:Goodwill",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2428414 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Details)",
     "role": "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
     "shortName": "GOODWILL AND INTANGIBLE ASSETS (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:AmortizationOfIntangibleAssets",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R62": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2429415 - Disclosure - GOODWILL AND INTANGIBLE ASSETS Future Amortization Expense (Details)",
     "role": "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails",
     "shortName": "GOODWILL AND INTANGIBLE ASSETS Future Amortization Expense (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "ix:continuation",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R63": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2432416 - Disclosure - PROPERTY, PLANT AND EQUIPMENT (Details)",
     "role": "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails",
     "shortName": "PROPERTY, PLANT AND EQUIPMENT (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:PublicUtilitiesPropertyPlantAndEquipmentPlantInService",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R64": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommercialPaper",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2438418 - Disclosure - DEBT Schedule of Debt (Details)",
     "role": "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
     "shortName": "DEBT Schedule of Debt (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfDebtTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:DebtLongtermAndShorttermCombinedAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R65": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2439419 - Disclosure - DEBT Annual Maturities (Details)",
     "role": "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
     "shortName": "DEBT Annual Maturities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R66": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DerivativeFixedInterestRate",
      "reportCount": 1,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2440420 - Disclosure - DEBT Interest Rate Swap Agreements (Details)",
     "role": "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
     "shortName": "DEBT Interest Rate Swap Agreements (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfInterestRateDerivativesTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "if6d483a220524420af9cadbcc24a32f8_I20211130",
      "decimals": "INF",
      "lang": "en-US",
      "name": "us-gaap:DerivativeFixedInterestRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R67": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2441421 - Disclosure - DEBT Revolving Credit Agreements (Details)",
     "role": "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
     "shortName": "DEBT Revolving Credit Agreements (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LineOfCreditFacilityCurrentBorrowingCapacity",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R68": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CommercialPaper",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2442422 - Disclosure - DEBT Additional Information (Details)",
     "role": "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
     "shortName": "DEBT Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i541a738ee7dc4859b3eda1599aa8e980_I20211231",
      "decimals": "INF",
      "lang": "en-US",
      "name": "itc:CommercialPaperProgramMaximumAuthorizedAmountOutstanding",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R69": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "link:footnote",
       "link:footnote",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2445423 - Disclosure - INCOME TAXES Income Tax Reconciliation (Details)",
     "role": "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails",
     "shortName": "INCOME TAXES Income Tax Reconciliation (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "link:footnote",
       "link:footnote",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R7": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EmployeeBenefitsAndShareBasedCompensation",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1005007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS",
     "role": "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
     "shortName": "CONSOLIDATED STATEMENTS OF CASH FLOWS",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:IncreaseDecreaseInRegulatoryAssetsAndLiabilities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R70": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "link:footnote",
       "link:footnote",
       "us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncomeTaxReconciliationOtherAdjustments",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2446424 - Disclosure - INCOME TAXES Components of Income Tax Provision (Details)",
     "role": "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
     "shortName": "INCOME TAXES Components of Income Tax Provision (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:CurrentIncomeTaxExpenseBenefit",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R71": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DeferredIncomeTaxExpenseBenefit",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2447425 - Disclosure - INCOME TAXES Deferred Tax Assets and Liabilities (Details)",
     "role": "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
     "shortName": "INCOME TAXES Deferred Tax Assets and Liabilities (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:DeferredTaxLiabilitiesPropertyPlantAndEquipment",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R72": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "INF",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EffectiveIncomeTaxRateContinuingOperations",
      "reportCount": 1,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2448426 - Disclosure - INCOME TAXES INCOME TAXES Additional Information (Details)",
     "role": "http://www.itctransco.com/role/INCOMETAXESINCOMETAXESAdditionalInformationDetails",
     "shortName": "INCOME TAXES INCOME TAXES Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R73": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "itc:LineOfCreditFacilitiesAndOtherDebtTotalAmountOutstanding",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2451427 - Disclosure - FAIR VALUE MEASUREMENTS Assets Measured at Fair Value Subject to Three-Tier Hierarchy (Details)",
     "role": "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
     "shortName": "FAIR VALUE MEASUREMENTS Assets Measured at Fair Value Subject to Three-Tier Hierarchy (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i906b0760dc57454b84e3501534352349_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:AssetsFairValueDisclosure",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R74": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtFairValue",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2452428 - Disclosure - FAIR VALUE MEASUREMENTS Additional Information (Details)",
     "role": "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
     "shortName": "FAIR VALUE MEASUREMENTS Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R75": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfDefinedBenefitPlansDisclosuresTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncreaseDecreaseInRegulatoryLiabilities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2455429 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Net Defined Benefit Cost Components (Details)",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Net Defined Benefit Cost Components (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfDefinedBenefitPlansDisclosuresTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:IncreaseDecreaseInRegulatoryLiabilities",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R76": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2456430 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Defined Benefit Plans Disclosures (Details)",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Defined Benefit Plans Disclosures (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R77": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAssumptionsUsedTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i6cc4b00eaf6e405f8df6d787a010cbcd_I20211231",
      "decimals": "4",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2457431 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Assumptions Used (Details)",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Assumptions Used (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAssumptionsUsedTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i6cc4b00eaf6e405f8df6d787a010cbcd_I20211231",
      "decimals": "4",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R78": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i6cc4b00eaf6e405f8df6d787a010cbcd_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2458432 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Projected Benefit Payments (Details)",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Projected Benefit Payments (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfExpectedBenefitPaymentsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i6cc4b00eaf6e405f8df6d787a010cbcd_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R79": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAllocationOfPlanAssetsTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "2",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanWeightedAverageAssetAllocations",
      "reportCount": 1,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2459433 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Schedule of Plan Assets (Details)",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Schedule of Plan Assets (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ia8b29ea851474b9dab44e3a6d0187aeb_D20210101-20211231",
      "decimals": "INF",
      "lang": "en-US",
      "name": "itc:FairValueAssetsLevelTransfersAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R8": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1106101 - Statement - GENERAL",
     "role": "http://www.itctransco.com/role/GENERAL",
     "shortName": "GENERAL",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R80": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:DefinedContributionPlanCostRecognized",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2461435 - Disclosure - RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Additional Information (Details)",
     "role": "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
     "shortName": "RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i6cc4b00eaf6e405f8df6d787a010cbcd_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R81": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i1c8bbfa57b36416bb0523eba8b494da2_I20201231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2464436 - Disclosure - STOCKHOLDER'S EQUITY Changes in Accumulated Other Comprehensive Income (Details)",
     "role": "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails",
     "shortName": "STOCKHOLDER'S EQUITY Changes in Accumulated Other Comprehensive Income (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R82": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i32b8c31ffb124b829f46995cf62e81ed_D20220101-20221231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OtherComprehensiveIncomeLossTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2465437 - Disclosure - STOCKHOLDER'S EQUITY Additional Information (Details)",
     "role": "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails",
     "shortName": "STOCKHOLDER'S EQUITY Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i32b8c31ffb124b829f46995cf62e81ed_D20220101-20221231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OtherComprehensiveIncomeLossTax",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R83": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ibee7a002a00543e49b74e0d77e3949c9_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2468438 - Disclosure - SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Allocation of Recognized Period Costs (Details)",
     "role": "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails",
     "shortName": "SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Allocation of Recognized Period Costs (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ibee7a002a00543e49b74e0d77e3949c9_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R84": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i6d9a5b47b8ca46658c8955c869d5826e_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2469439 - Disclosure - SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Performance Based Units (Details)",
     "role": "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
     "shortName": "SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Performance Based Units (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic27b43b862a843f1b62e905c914a1c50_D20210101-20211231",
      "decimals": "0",
      "lang": "en-US",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted",
      "reportCount": 1,
      "unique": true,
      "unitRef": "shares",
      "xsiNil": "false"
     }
    },
    "R85": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i633e2d853fb64c91be99a36ea692ebb2_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2470440 - Disclosure - SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Service Based Units (Details)",
     "role": "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
     "shortName": "SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Service Based Units (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnitsVestedAndExpectedToVestTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i318cdd7f97624a21b3c44cab03eff836_D20210101-20211231",
      "decimals": "0",
      "lang": "en-US",
      "name": "us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted",
      "reportCount": 1,
      "unique": true,
      "unitRef": "shares",
      "xsiNil": "false"
     }
    },
    "R86": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "dei:DocumentPeriodEndDate",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2471441 - Disclosure - SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Additional Information (Details)",
     "role": "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
     "shortName": "SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Additional Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "if80fca686b134d0bb3c7773428a752a3_D20210101-20211231",
      "decimals": "2",
      "lang": "en-US",
      "name": "itc:ShareBasedCompensationArrangementbyShareBasedPaymentAwardPayoutofTargetAwardPercent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R87": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ie42a326aebae4aabb5f6fc006109d9f7_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2474442 - Disclosure - JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES Schedule of Jointly Owned Utility Plant (Details)",
     "role": "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
     "shortName": "JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICES Schedule of Jointly Owned Utility Plant (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ie42a326aebae4aabb5f6fc006109d9f7_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R88": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:AccountsReceivableRelatedPartiesCurrent",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2477443 - Disclosure - RELATED PARTY TRANSACTIONS (Details)",
     "role": "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails",
     "shortName": "RELATED PARTY TRANSACTIONS (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:AccountsPayableRelatedPartiesCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R89": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "itc:Requiredcustomerrefundpaid",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2481444 - Disclosure - COMMITMENTS AND CONTINGENT LIABILITIES (Details)",
     "role": "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
     "shortName": "COMMITMENTS AND CONTINGENT LIABILITIES (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:PurchaseObligation",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R9": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashFlowSupplementalDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "statement",
     "isDefault": "false",
     "longName": "1107120 - Statement - SUPPLEMENTAL FINANCIAL INFORMATION",
     "role": "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATION",
     "shortName": "SUPPLEMENTAL FINANCIAL INFORMATION",
     "subGroupType": "",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashFlowSupplementalDisclosuresTextBlock",
      "reportCount": 1,
      "unique": true,
      "unitRef": null,
      "xsiNil": "false"
     }
    },
    "R90": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:Revenues",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2484447 - Disclosure - SEGMENT INFORMATION (Details)",
     "role": "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails",
     "shortName": "SEGMENT INFORMATION (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i1007064fcc204fefae470198b0d2184f_I20191231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:PropertyPlantAndEquipmentNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R91": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:Revenues",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2487448 - Disclosure - SUPPLEMENTARY QUARTERLY FINANCIAL INFORMATION (Unaudited) (Details)",
     "role": "http://www.itctransco.com/role/SUPPLEMENTARYQUARTERLYFINANCIALINFORMATIONUnauditedDetails",
     "shortName": "SUPPLEMENTARY QUARTERLY FINANCIAL INFORMATION (Unaudited) (Details)",
     "subGroupType": "details",
     "uniqueAnchor": null
    },
    "R92": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2489449 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Financial Position (Parent Company Only) (Details)",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Financial Position (Parent Company Only) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i928854bf50464bd0b12f694529416154_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:AccountsReceivableRelatedPartiesCurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R93": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:OtherOperatingIncomeExpenseNet",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2490450 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Comprehensive Income (Parent Company Only) (Details)",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Comprehensive Income (Parent Company Only) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ie4755fb663544e87b1ee77e811f42611_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:OtherOperatingIncomeExpenseNet",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R94": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:NetIncomeLoss",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2491451 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Cash Flows (Parent Company) (Details)",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Condensed Statements of Cash Flows (Parent Company) (Details)",
     "subGroupType": "parenthetical",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ie4755fb663544e87b1ee77e811f42611_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "itc:EquityInSubsidiariesNetEarnings",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R95": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i4ca3de098e0941a18652ffa0ecda2c90_I20211231",
      "decimals": "2",
      "first": true,
      "lang": "en-US",
      "name": "itc:FercApprovedCapitalStructureEquityPercentage",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2492452 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT General (Details)",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT General (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "div",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i4ca3de098e0941a18652ffa0ecda2c90_I20211231",
      "decimals": "2",
      "first": true,
      "lang": "en-US",
      "name": "itc:FercApprovedCapitalStructureEquityPercentage",
      "reportCount": 1,
      "unique": true,
      "unitRef": "number",
      "xsiNil": "false"
     }
    },
    "R96": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2493453 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Debt (Details)",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Debt (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i928854bf50464bd0b12f694529416154_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R97": {
     "firstAnchor": {
      "ancestors": [
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "id458ae67c1f9477ea52bfe457676af95_D20210101-20211231",
      "decimals": null,
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:ScheduleOfRelatedPartyTransactionsTableTextBlock",
      "reportCount": 1,
      "unitRef": null,
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2494454 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Related-party Transactions (Details)",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Related-party Transactions (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i8126200f4fa3427cb637d3b653cf5f52_D20210101-20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "itc:TaxPaymentsToFromSubsidiaryUnderIntercompanyTaxSharingAgreement",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    },
    "R98": {
     "firstAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "us-gaap:ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "ic05648d8fb844811bbef63af8f0efd99_I20211231",
      "decimals": "-6",
      "first": true,
      "lang": "en-US",
      "name": "us-gaap:CashAndCashEquivalentsAtCarryingValue",
      "reportCount": 1,
      "unitRef": "usd",
      "xsiNil": "false"
     },
     "groupType": "disclosure",
     "isDefault": "false",
     "longName": "2495455 - Disclosure - SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Supplemental Financial Information (Details)",
     "role": "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
     "shortName": "SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT Supplemental Financial Information (Details)",
     "subGroupType": "details",
     "uniqueAnchor": {
      "ancestors": [
       "span",
       "td",
       "tr",
       "table",
       "div",
       "ix:continuation",
       "ix:continuation",
       "body",
       "html"
      ],
      "baseRef": "itc-20211231.htm",
      "contextRef": "i928854bf50464bd0b12f694529416154_I20211231",
      "decimals": "-6",
      "lang": "en-US",
      "name": "us-gaap:RestrictedCashNoncurrent",
      "reportCount": 1,
      "unique": true,
      "unitRef": "usd",
      "xsiNil": "false"
     }
    }
   },
   "segmentCount": 143,
   "tag": {
    "dei_AmendmentFlag": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.",
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag"
       }
      }
     },
     "localname": "AmendmentFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_AuditorFirmId": {
     "auth_ref": [
      "r818",
      "r819",
      "r820"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "PCAOB issued Audit Firm Identifier",
        "label": "Auditor Firm ID",
        "terseLabel": "Auditor Firm ID"
       }
      }
     },
     "localname": "AuditorFirmId",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/AuditInformation"
     ],
     "xbrltype": "nonemptySequenceNumberItemType"
    },
    "dei_AuditorLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor [Line Items]",
        "terseLabel": "Auditor [Line Items]"
       }
      }
     },
     "localname": "AuditorLineItems",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/AuditInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_AuditorLocation": {
     "auth_ref": [
      "r818",
      "r819",
      "r820"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Location",
        "terseLabel": "Auditor Location"
       }
      }
     },
     "localname": "AuditorLocation",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/AuditInformation"
     ],
     "xbrltype": "internationalNameItemType"
    },
    "dei_AuditorName": {
     "auth_ref": [
      "r818",
      "r819",
      "r820"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor Name",
        "terseLabel": "Auditor Name"
       }
      }
     },
     "localname": "AuditorName",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/AuditInformation"
     ],
     "xbrltype": "internationalNameItemType"
    },
    "dei_AuditorTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Auditor [Table]",
        "terseLabel": "Auditor [Table]"
       }
      }
     },
     "localname": "AuditorTable",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "xbrltype": "stringItemType"
    },
    "dei_CityAreaCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Area code of city",
        "label": "City Area Code",
        "verboseLabel": "City Area Code"
       }
      }
     },
     "localname": "CityAreaCode",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_CurrentFiscalYearEndDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "End date of current fiscal year in the format --MM-DD.",
        "label": "Current Fiscal Year End Date",
        "terseLabel": "Current Fiscal Year End Date"
       }
      }
     },
     "localname": "CurrentFiscalYearEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "gMonthDayItemType"
    },
    "dei_DocumentAnnualReport": {
     "auth_ref": [
      "r818",
      "r819",
      "r820"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as an annual report.",
        "label": "Document Annual Report",
        "terseLabel": "Document Annual Report"
       }
      }
     },
     "localname": "DocumentAnnualReport",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of the document as assigned by the filer, corresponding to SEC document naming convention standards.",
        "label": "Document [Domain]",
        "terseLabel": "Document [Domain]"
       }
      }
     },
     "localname": "DocumentDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_DocumentFiscalPeriodFocus": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fiscal period values are FY, Q1, Q2, and Q3.  1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.",
        "label": "Document Fiscal Period Focus",
        "terseLabel": "Document Fiscal Period Focus"
       }
      }
     },
     "localname": "DocumentFiscalPeriodFocus",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "fiscalPeriodItemType"
    },
    "dei_DocumentFiscalYearFocus": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.",
        "label": "Document Fiscal Year Focus",
        "terseLabel": "Document Fiscal Year Focus"
       }
      }
     },
     "localname": "DocumentFiscalYearFocus",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "gYearItemType"
    },
    "dei_DocumentInformationDocumentAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table.",
        "label": "Document Information, Document [Axis]",
        "terseLabel": "Document Information, Document [Axis]"
       }
      }
     },
     "localname": "DocumentInformationDocumentAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_DocumentInformationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Document Information [Line Items]",
        "terseLabel": "Document Information [Line Items]"
       }
      }
     },
     "localname": "DocumentInformationLineItems",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_DocumentInformationTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Container to support the formal attachment of each official or unofficial, public or private document as part of a submission package.",
        "label": "Document Information [Table]",
        "terseLabel": "Document Information [Table]"
       }
      }
     },
     "localname": "DocumentInformationTable",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_DocumentPeriodEndDate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period.  The format of the date is YYYY-MM-DD.",
        "label": "Document Period End Date",
        "terseLabel": "Document Period End Date"
       }
      }
     },
     "localname": "DocumentPeriodEndDate",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument",
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "dateItemType"
    },
    "dei_DocumentTransitionReport": {
     "auth_ref": [
      "r821"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true only for a form used as a transition report.",
        "label": "Document Transition Report",
        "terseLabel": "Document Transition Report"
       }
      }
     },
     "localname": "DocumentTransitionReport",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_DocumentType": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.",
        "label": "Document Type",
        "terseLabel": "Document Type"
       }
      }
     },
     "localname": "DocumentType",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "submissionTypeItemType"
    },
    "dei_EntityAddressAddressLine1": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name",
        "label": "Entity Address, Address Line One",
        "terseLabel": "Entity Address, Address Line One"
       }
      }
     },
     "localname": "EntityAddressAddressLine1",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressCityOrTown": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the City or Town",
        "label": "Entity Address, City or Town",
        "terseLabel": "Entity Address, City or Town"
       }
      }
     },
     "localname": "EntityAddressCityOrTown",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressPostalZipCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Code for the postal or zip code",
        "label": "Entity Address, Postal Zip Code",
        "terseLabel": "Entity Address, Postal Zip Code"
       }
      }
     },
     "localname": "EntityAddressPostalZipCode",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityAddressStateOrProvince": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of the state or province.",
        "label": "Entity Address, State or Province",
        "terseLabel": "Entity Address, State or Province"
       }
      }
     },
     "localname": "EntityAddressStateOrProvince",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "stateOrProvinceItemType"
    },
    "dei_EntityCentralIndexKey": {
     "auth_ref": [
      "r817"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.",
        "label": "Entity Central Index Key",
        "terseLabel": "Entity Central Index Key"
       }
      }
     },
     "localname": "EntityCentralIndexKey",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "centralIndexKeyItemType"
    },
    "dei_EntityCommonStockSharesOutstanding": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.",
        "label": "Entity Common Stock, Shares Outstanding",
        "terseLabel": "Entity Common Stock, Shares Outstanding"
       }
      }
     },
     "localname": "EntityCommonStockSharesOutstanding",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "sharesItemType"
    },
    "dei_EntityCurrentReportingStatus": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.",
        "label": "Entity Current Reporting Status",
        "terseLabel": "Entity Current Reporting Status"
       }
      }
     },
     "localname": "EntityCurrentReportingStatus",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "All the names of the entities being reported upon in a document. Any legal structure used to conduct activities or to hold assets. Some examples of such structures are corporations, partnerships, limited liability companies, grantor trusts, and other trusts. This item does not include business and geographical segments which are included in the geographical or business segments domains.",
        "label": "Entity [Domain]",
        "terseLabel": "Entity [Domain]"
       }
      }
     },
     "localname": "EntityDomain",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/INCOMETAXESINCOMETAXESAdditionalInformationDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/LEASESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "dei_EntityEmergingGrowthCompany": {
     "auth_ref": [
      "r817"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate if registrant meets the emerging growth company criteria.",
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company"
       }
      }
     },
     "localname": "EntityEmergingGrowthCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityFileNumber": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.",
        "label": "Entity File Number",
        "terseLabel": "Entity File Number"
       }
      }
     },
     "localname": "EntityFileNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "fileNumberItemType"
    },
    "dei_EntityFilerCategory": {
     "auth_ref": [
      "r817"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.",
        "label": "Entity Filer Category",
        "terseLabel": "Entity Filer Category"
       }
      }
     },
     "localname": "EntityFilerCategory",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "filerCategoryItemType"
    },
    "dei_EntityIncorporationStateCountryCode": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Two-character EDGAR code representing the state or country of incorporation.",
        "label": "Entity Incorporation, State or Country Code",
        "terseLabel": "Entity Incorporation, State or Country Code"
       }
      }
     },
     "localname": "EntityIncorporationStateCountryCode",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "edgarStateCountryItemType"
    },
    "dei_EntityInteractiveDataCurrent": {
     "auth_ref": [
      "r829"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).",
        "label": "Entity Interactive Data Current",
        "terseLabel": "Entity Interactive Data Current"
       }
      }
     },
     "localname": "EntityInteractiveDataCurrent",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityPublicFloat": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.",
        "label": "Entity Public Float",
        "terseLabel": "Entity Public Float"
       }
      }
     },
     "localname": "EntityPublicFloat",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "monetaryItemType"
    },
    "dei_EntityRegistrantName": {
     "auth_ref": [
      "r817"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.",
        "label": "Entity Registrant Name",
        "terseLabel": "Entity Registrant Name"
       }
      }
     },
     "localname": "EntityRegistrantName",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "dei_EntityShellCompany": {
     "auth_ref": [
      "r817"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.",
        "label": "Entity Shell Company",
        "terseLabel": "Entity Shell Company"
       }
      }
     },
     "localname": "EntityShellCompany",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntitySmallBusiness": {
     "auth_ref": [
      "r817"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicates that the company is a Smaller Reporting Company (SRC).",
        "label": "Entity Small Business",
        "terseLabel": "Entity Small Business"
       }
      }
     },
     "localname": "EntitySmallBusiness",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_EntityTaxIdentificationNumber": {
     "auth_ref": [
      "r817"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.",
        "label": "Entity Tax Identification Number",
        "terseLabel": "Entity Tax Identification Number"
       }
      }
     },
     "localname": "EntityTaxIdentificationNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "employerIdItemType"
    },
    "dei_EntityVoluntaryFilers": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.",
        "label": "Entity Voluntary Filers",
        "terseLabel": "Entity Voluntary Filers"
       }
      }
     },
     "localname": "EntityVoluntaryFilers",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_EntityWellKnownSeasonedIssuer": {
     "auth_ref": [
      "r830"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.",
        "label": "Entity Well-known Seasoned Issuer",
        "terseLabel": "Entity Well-known Seasoned Issuer"
       }
      }
     },
     "localname": "EntityWellKnownSeasonedIssuer",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "yesNoItemType"
    },
    "dei_IcfrAuditorAttestationFlag": {
     "auth_ref": [
      "r818",
      "r819",
      "r820"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "ICFR Auditor Attestation Flag",
        "terseLabel": "ICFR Auditor Attestation Flag"
       }
      }
     },
     "localname": "IcfrAuditorAttestationFlag",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "booleanItemType"
    },
    "dei_LegalEntityAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The set of legal entities associated with a report.",
        "label": "Legal Entity [Axis]",
        "terseLabel": "Legal Entity [Axis]"
       }
      }
     },
     "localname": "LegalEntityAxis",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/INCOMETAXESINCOMETAXESAdditionalInformationDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/LEASESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "dei_LocalPhoneNumber": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Local phone number for entity.",
        "label": "Local Phone Number",
        "terseLabel": "Local Phone Number"
       }
      }
     },
     "localname": "LocalPhoneNumber",
     "nsuri": "http://xbrl.sec.gov/dei/2021q4",
     "presentation": [
      "http://www.itctransco.com/role/DocumentandEntityInformationDocument"
     ],
     "xbrltype": "normalizedStringItemType"
    },
    "itc_A2017OmnibusPlanMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "2017 Omnibus Plan [Member]",
        "label": "2017 Omnibus Plan [Member]",
        "terseLabel": "2017 Omnibus Plan"
       }
      }
     },
     "localname": "A2017OmnibusPlanMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_AditDeferralMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "ADIT Deferral [Member]",
        "label": "ADIT Deferral [Member]",
        "terseLabel": "ADIT Deferral"
       }
      }
     },
     "localname": "AditDeferralMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_AgreementCounterpartyAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Agreement Counterparty [Axis]",
        "label": "Agreement Counterparty [Axis]",
        "terseLabel": "Agreement Counterparty [Axis]"
       }
      }
     },
     "localname": "AgreementCounterpartyAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_AgreementCounterpartyDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Agreement Counterparty [Axis]",
        "label": "Agreement Counterparty [Domain]",
        "terseLabel": "Agreement Counterparty [Domain]"
       }
      }
     },
     "localname": "AgreementCounterpartyDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_AgreementNameAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Agreement Name [Axis]",
        "label": "Agreement Name [Axis]",
        "terseLabel": "Agreement Name [Axis]"
       }
      }
     },
     "localname": "AgreementNameAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_AgreementNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Agreement Name [Axis]",
        "label": "Agreement Name [Domain]",
        "terseLabel": "Agreement Name [Domain]"
       }
      }
     },
     "localname": "AgreementNameDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_AmortizationOfExcessDeferredTaxes": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortization Of Excess Deferred Taxes",
        "label": "Amortization Of Excess Deferred Taxes",
        "terseLabel": "Amortization Of Excess Deferred Taxes"
       }
      }
     },
     "localname": "AmortizationOfExcessDeferredTaxes",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_AnnualCost": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Annual Cost",
        "label": "Annual Cost",
        "terseLabel": "Annual cost"
       }
      }
     },
     "localname": "AnnualCost",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_BasisPointIncentiveAdderforRTOParticipation": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Basis Point Incentive Adder for RTO Participation",
        "label": "Basis Point Incentive Adder for RTO Participation",
        "terseLabel": "Basis Point Incentive Adder for RTO Participation"
       }
      }
     },
     "localname": "BasisPointIncentiveAdderforRTOParticipation",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "itc_CombinedIncentiveAdders": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Combined Incentive Adders",
        "label": "Combined Incentive Adders",
        "terseLabel": "Combined Incentive Adders"
       }
      }
     },
     "localname": "CombinedIncentiveAdders",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "itc_CommercialPaperProgramMaximumAuthorizedAmountOutstanding": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commercial Paper Program, Maximum Authorized Amount Outstanding",
        "label": "Commercial Paper Program, Maximum Authorized Amount Outstanding",
        "terseLabel": "Commercial Paper Program, Maximum Authorized Amount Outstanding"
       }
      }
     },
     "localname": "CommercialPaperProgramMaximumAuthorizedAmountOutstanding",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_CommitmentsAndContingentLiabilitiesLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commitments and Contingent Liabilities [Line Items]",
        "label": "Commitments and Contingent Liabilities [Line Items]",
        "terseLabel": "Commitments and Contingent Liabilities"
       }
      }
     },
     "localname": "CommitmentsAndContingentLiabilitiesLineItems",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_CommitmentsAndContingentLiabilitiesTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Commitments and Contingent Liabilities [Table]",
        "label": "Commitments and Contingent Liabilities [Table]",
        "terseLabel": "Commitments and Contingent Liabilities [Table]"
       }
      }
     },
     "localname": "CommitmentsAndContingentLiabilitiesTable",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_ConsumersEnergyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Consumers Energy [Member]",
        "label": "Consumers Energy [Member]",
        "terseLabel": "Consumers Energy"
       }
      }
     },
     "localname": "ConsumersEnergyMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_DTEElectricMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "DTE Electric [Member]",
        "label": "DTE Electric [Member]",
        "terseLabel": "DTE Electric"
       }
      }
     },
     "localname": "DTEElectricMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_DebtLongtermandShorttermCombinedAmountGross": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt, Long-term and Short-term, Combined Amount, Gross",
        "label": "Debt, Long-term and Short-term, Combined Amount, Gross",
        "terseLabel": "Total principal",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "DebtLongtermandShorttermCombinedAmountGross",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_DeferredFinancingFeesAndDiscountOrPremiumOnDebtAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred Financing Fees and Discount or Premium on Debt [Abstract]",
        "label": "Deferred Financing Fees and Discount or Premium on Debt [Abstract]",
        "terseLabel": "Deferred Financing Fees and Discount or Premium on Debt"
       }
      }
     },
     "localname": "DeferredFinancingFeesAndDiscountOrPremiumOnDebtAbstract",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_DeferredFinancingFeesAndDiscountOrPremiumOnDebtPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred Financing Fees and Discount or Premium On Debt, Policy",
        "label": "Deferred Financing Fees and Discount or Premium On Debt, Policy [Policy Text Block]",
        "terseLabel": "Deferred Financing Fees and Discount or Premium On Debt"
       }
      }
     },
     "localname": "DeferredFinancingFeesAndDiscountOrPremiumOnDebtPolicyPolicyTextBlock",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "itc_DeferredTaxAssetsAndLiabilitiesLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred Tax Assets and Liabilities [Line Items]",
        "label": "Deferred Tax Assets and Liabilities [Line Items]",
        "terseLabel": "Deferred Tax Assets and Liabilities [Line Items]"
       }
      }
     },
     "localname": "DeferredTaxAssetsAndLiabilitiesLineItems",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_DeferredTaxAssetsAndLiabilitiesTypeAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred Tax Assets and Liabilities, Type [Axis]",
        "label": "Deferred Tax Assets and Liabilities, Type [Axis]",
        "terseLabel": "Deferred Tax Assets and Liabilities, Type [Axis]"
       }
      }
     },
     "localname": "DeferredTaxAssetsAndLiabilitiesTypeAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_DeferredTaxAssetsAndLiabilitiesTypeDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred Tax Assets and Liabilities, Type [Domain]",
        "label": "Deferred Tax Assets and Liabilities, Type [Domain]",
        "terseLabel": "Deferred Tax Assets and Liabilities, Type [Domain]"
       }
      }
     },
     "localname": "DeferredTaxAssetsAndLiabilitiesTypeDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_DeferredTaxAssetsDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred Tax Assets, Deferred Expense, Compensation and Benefits, Pension and Postretirement Benefits",
        "label": "Deferred Tax Assets, Deferred Expense, Compensation and Benefits, Pension and Postretirement Benefits",
        "terseLabel": "Pension and postretirement liabilities"
       }
      }
     },
     "localname": "DeferredTaxAssetsDeferredExpenseCompensationAndBenefitsPensionAndPostretirementBenefits",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_DeferredandOtherIncomeTaxes": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Deferred and Other Income Taxes",
        "label": "Deferred and Other Income Taxes",
        "terseLabel": "Deferred and other income taxes"
       }
      }
     },
     "localname": "DeferredandOtherIncomeTaxes",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_DefinedBenefitPlanAccumulatedBenefitObligationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Defined Benefit Plan, Accumulated Benefit Obligation [Abstract]",
        "label": "Defined Benefit Plan, Accumulated Benefit Obligation [Abstract]",
        "terseLabel": "Accumulated benefit obligation"
       }
      }
     },
     "localname": "DefinedBenefitPlanAccumulatedBenefitObligationAbstract",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationAnnualRateOfIncreaseInDentalBenefitCosts": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Annual Rate Of Increase In Dental Benefit Costs",
        "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Annual Rate Of Increase In Dental Benefit Costs",
        "terseLabel": "Annual rate of increase in dental benefit costs"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationAnnualRateOfIncreaseInDentalBenefitCosts",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_DiscountRateAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Discount Rate [Axis]",
        "label": "Discount Rate [Axis]",
        "terseLabel": "Discount Rate [Axis]"
       }
      }
     },
     "localname": "DiscountRateAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_DiscountRateDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Discount Rate [Axis]",
        "label": "Discount Rate [Domain]",
        "terseLabel": "Discount Rate [Domain]"
       }
      }
     },
     "localname": "DiscountRateDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_DocumentAndEntityInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Document and Entity Information [Abstract]",
        "label": "Document and Entity Information [Abstract]",
        "terseLabel": "Document and Entity Information [Abstract]"
       }
      }
     },
     "localname": "DocumentAndEntityInformationAbstract",
     "nsuri": "http://www.itctransco.com/20211231",
     "xbrltype": "stringItemType"
    },
    "itc_EasementAgreementMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Easement Agreement [Member]",
        "label": "Easement Agreement [Member]",
        "terseLabel": "Easement Agreement"
       }
      }
     },
     "localname": "EasementAgreementMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_EffectiveIncomeTaxReconciliationAFUDCEquityAmount": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Effective Income Tax Reconciliation, AFUDC Equity, Amount",
        "label": "Effective Income Tax Reconciliation, AFUDC Equity, Amount",
        "negatedTerseLabel": "AFUDC equity"
       }
      }
     },
     "localname": "EffectiveIncomeTaxReconciliationAFUDCEquityAmount",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_Effectonnetincomefrom10basispointreductionintheauthorizedbasereturnonequity": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Effect on net income from 10 basis point reduction in the authorized base return on equity",
        "label": "Effect on net income from 10 basis point reduction in the authorized base return on equity",
        "terseLabel": "Effect on net income from 10 basis point reduction in the authorized base return on equity"
       }
      }
     },
     "localname": "Effectonnetincomefrom10basispointreductionintheauthorizedbasereturnonequity",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_EmployeeSharePurchasePlanMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Employee Share Purchase Plan [Member]",
        "label": "Employee Share Purchase Plan [Member]",
        "terseLabel": "Employee Share Purchase Plan"
       }
      }
     },
     "localname": "EmployeeSharePurchasePlanMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_EquityInSubsidiariesNetEarnings": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Equity in Subsidiaries' Net Earnings",
        "label": "Equity in Subsidiaries' Net Earnings",
        "negatedLabel": "Equity in subsidiaries' earnings"
       }
      }
     },
     "localname": "EquityInSubsidiariesNetEarnings",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_Equityincapitalstructureforratemakingpurposes": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Equity in capital structure for ratemaking purposes",
        "label": "Equity in capital structure for ratemaking purposes",
        "terseLabel": "Equity in capital structure for ratemaking purposes"
       }
      }
     },
     "localname": "Equityincapitalstructureforratemakingpurposes",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_EstimatedRefundRelatedtoReturnonEquityComplaintMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Estimated Refund Related to Return on Equity Complaint [Member]",
        "label": "Estimated Refund Related to Return on Equity Complaint [Member]",
        "terseLabel": "Estimated Refund Related to Return on Equity Complaint"
       }
      }
     },
     "localname": "EstimatedRefundRelatedtoReturnonEquityComplaintMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ExcessstateincometaxdeductionMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "excess state income tax deduction [Member]",
        "label": "excess state income tax deduction [Member]",
        "terseLabel": "Excess State Income Tax Deduction"
       }
      }
     },
     "localname": "ExcessstateincometaxdeductionMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FERCOrderMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "FERC Order [Member]",
        "label": "FERC Order [Member]",
        "terseLabel": "FERC Order"
       }
      }
     },
     "localname": "FERCOrderMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FairValueAssetsLevelTransfersAmount": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair Value, Assets, Level Transfers, Amount",
        "label": "Fair Value, Assets, Level Transfers, Amount",
        "terseLabel": "Fair value, level transfers"
       }
      }
     },
     "localname": "FairValueAssetsLevelTransfersAmount",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_FercApprovedCapitalStructureDebtPercentage": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "FERC Approved Capital Structure, Debt Percentage",
        "label": "FERC Approved Capital Structure, Debt Percentage",
        "terseLabel": "FERC approved capital structure, debt percentage"
       }
      }
     },
     "localname": "FercApprovedCapitalStructureDebtPercentage",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_FercApprovedCapitalStructureEquityPercentage": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "FERC Approved Capital Structure, Equity Percentage",
        "label": "FERC Approved Capital Structure, Equity Percentage",
        "terseLabel": "FERC approved capital structure, equity percentage"
       }
      }
     },
     "localname": "FercApprovedCapitalStructureEquityPercentage",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_FirstMortgageBondsDueJanuary312038Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series A, due January 31, 2038 [Member]",
        "label": "First Mortgage Bonds due January 31, 2038 [Member]",
        "terseLabel": "First Mortgage Bonds, Series A, due January 31, 2038"
       }
      }
     },
     "localname": "FirstMortgageBondsDueJanuary312038Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsDueJuly152051Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds due July 15, 2051",
        "label": "First Mortgage Bonds due July 15, 2051 [Member]",
        "terseLabel": "First Mortgage Bonds due July 15, 2051 [Member]"
       }
      }
     },
     "localname": "FirstMortgageBondsDueJuly152051Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesADueNovember262044Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series A, Due November 26, 2044 [Member]",
        "label": "First Mortgage Bonds, Series A, Due November 26, 2044 [Member]",
        "terseLabel": "First Mortgage Bonds, Series A, due November 26, 2044"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesADueNovember262044Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesCDueDecember222020Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series C, due December 22, 2020 [Member]",
        "label": "First Mortgage Bonds, Series C, due December 22, 2020 [Member]",
        "terseLabel": "First Mortgage Bonds, Series C, due December 22, 2020"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesCDueDecember222020Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesCDueMarch312036Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series C, due March 31, 2036 [Member]",
        "label": "First Mortgage Bonds, Series C, due March 31, 2036 [Member]",
        "terseLabel": "First Mortgage Bonds, Series C, due March 31, 2036"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesCDueMarch312036Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesDDueDecember172024Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series D, due December 17, 2024 [Member]",
        "label": "First Mortgage Bonds, Series D, due December 17, 2024 [Member]",
        "terseLabel": "First Mortgage Bonds, Series D, due December 17, 2024"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesDDueDecember172024Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesEDueJanuary192027Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series E, due January 19, 2027 [Member]",
        "label": "First Mortgage Bonds, Series E, due January 19, 2027 [Member]",
        "terseLabel": "First Mortgage Bonds, Series E, due January 19, 2027"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesEDueJanuary192027Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesEdueAugust152043Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series E, due August 15, 2043 [Member]",
        "label": "First Mortgage Bonds, Series E, due August 15, 2043 [Member]",
        "terseLabel": "First Mortgage Bonds, Series E, due August 15, 2043"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesEdueAugust152043Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesFdueApril302043Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series F, due April 30, 2043 [Member]",
        "label": "First Mortgage Bonds, Series F, due April 30, 2043 [Member]",
        "terseLabel": "First Mortgage Bonds, Series F, due April 30, 2043"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesFdueApril302043Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesFdueJune102044Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series F, due June 10, 2044 [Member]",
        "label": "First Mortgage Bonds, Series F, due June 10, 2044 [Member]",
        "terseLabel": "First Mortgage Bonds, Series F, due June 10, 2044"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesFdueJune102044Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesGdueApril72055Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series G, due April 7, 2055 [Member]",
        "label": "First Mortgage Bonds, Series G, due April 7, 2055 [Member]",
        "terseLabel": "First Mortgage Bonds, Series G, due April 7, 2055"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesGdueApril72055Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesGdueMarch302053Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series G, due March 30, 2053 [Member]",
        "label": "First Mortgage Bonds, Series G, due March 30, 2053 [Member]",
        "terseLabel": "First Mortgage Bonds, Series G, due March 30, 2053"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesGdueMarch302053Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesHdueApril182047Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series H, due April 18, 2047 [Member]",
        "label": "First Mortgage Bonds, Series H, due April 18, 2047 [Member]",
        "terseLabel": "First Mortgage Bonds, Series H, due April 18, 2047"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesHdueApril182047Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesHdueAugust282049Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series H, due August 28, 2049",
        "label": "First Mortgage Bonds, Series H, due August 28, 2049 [Member]",
        "terseLabel": "First Mortgage Bonds, Series H, due August 28, 2049 [Member]"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesHdueAugust282049Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesIDueJanuary142052Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series I due January 14, 2052",
        "label": "First Mortgage Bonds, Series I due January 14, 2052 [Member]",
        "terseLabel": "First Mortgage Bonds, Series I due January 14, 2052"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesIDueJanuary142052Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesIdueNovember12051Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series I, due November 1, 2051 [Member]",
        "label": "First Mortgage Bonds, Series I, due November 1, 2051 [Member]",
        "terseLabel": "First Mortgage Bonds, Series I, due November 1, 2051"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesIdueNovember12051Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FirstMortgageBondsSeriesJDueJanuary142052Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "First Mortgage Bonds, Series J due January 14, 2052",
        "label": "First Mortgage Bonds, Series J due January 14, 2052 [Member]",
        "terseLabel": "First Mortgage Bonds, Series J due January 14, 2052"
       }
      }
     },
     "localname": "FirstMortgageBondsSeriesJDueJanuary142052Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_FormulaRateTrueUpRevenue": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 2.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The true-up mechanism under our Formula Rates is considered an alternative revenue program of a rate-regulated utility given it permits our Regulated Operating Subsidiaries to adjust future rates in response to past activities or completed events in order to collect our actual revenue requirements under our Formula Rates. In accordance with our accounting policy, only the current year origination of the true-up is reported as a formula rate true-up.",
        "label": "Formula Rate True-Up Revenue",
        "terseLabel": "Formula rate true-up"
       }
      }
     },
     "localname": "FormulaRateTrueUpRevenue",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_GeneralInterconnectionProjectsPolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "General Interconnection Projects, Policy [Policy Text Block]",
        "label": "General Interconnection Projects, Policy [Policy Text Block]",
        "terseLabel": "General Interconnection Projects and Contributions in Aid of Construction"
       }
      }
     },
     "localname": "GeneralInterconnectionProjectsPolicyPolicyTextBlock",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "itc_GoodwillAndIntangibleAssetsAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Goodwill and Intangible Assets [Axis]",
        "label": "Goodwill and Intangible Assets [Axis]",
        "terseLabel": "Goodwill and Intangible Assets [Axis]"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_GoodwillAndIntangibleAssetsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Goodwill and Intangible Assets [Line Items]",
        "label": "Goodwill and Intangible Assets [Line Items]",
        "terseLabel": "Goodwill and Intangible Assets"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsLineItems",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_GoodwillAndIntangibleAssetsNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Goodwill and Intangible Assets, Name [Domain]",
        "label": "Goodwill and Intangible Assets, Name [Domain]",
        "terseLabel": "Goodwill and Intangible Assets, Name [Domain]"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsNameDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ITCHoldingsCorp.Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "ITC Holdings Corp. [Member]",
        "label": "ITC Holdings Corp. [Member]",
        "terseLabel": "ITC Holdings Corp."
       }
      }
     },
     "localname": "ITCHoldingsCorp.Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/LEASESDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ITCInterconnectionLLCMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "ITC Interconnection LLC [Member]",
        "label": "ITC Interconnection LLC [Member]",
        "terseLabel": "ITC Interconnection LLC [Member]"
       }
      }
     },
     "localname": "ITCInterconnectionLLCMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ImpactfromRecognitionofLiabilityAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Impact from Recognition of Liability [Axis]",
        "label": "Impact from Recognition of Liability [Axis]",
        "terseLabel": "Impact from Recognition of Liability [Axis]"
       }
      }
     },
     "localname": "ImpactfromRecognitionofLiabilityAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_ImpactfromRecognitionofLiabilityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Impact from Recognition of Liability [Axis]",
        "label": "Impact from Recognition of Liability [Domain]",
        "terseLabel": "Impact from Recognition of Liability [Domain]"
       }
      }
     },
     "localname": "ImpactfromRecognitionofLiabilityDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ImpactfromRecognitionofLiabilityMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Impact from Recognition of Liability [Member]",
        "label": "Impact from Recognition of Liability [Member]",
        "terseLabel": "Impact from Recognition of Liability"
       }
      }
     },
     "localname": "ImpactfromRecognitionofLiabilityMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_IncentiveAdderforIndependentTransmissionOwnership": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Incentive Adder for Independent Transmission Ownership",
        "label": "Incentive Adder for Independent Transmission Ownership",
        "terseLabel": "Incentive Adder for Independent Transmission Ownership"
       }
      }
     },
     "localname": "IncentiveAdderforIndependentTransmissionOwnership",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "pureItemType"
    },
    "itc_IncomeTaxesRecoverableRelatedToAfudcEquityMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income Taxes Recoverable Related to AFUDC Equity [Member]",
        "label": "Income Taxes Recoverable Related to AFUDC Equity [Member]",
        "terseLabel": "Income Taxes Recoverable Related to AFUDC Equity"
       }
      }
     },
     "localname": "IncomeTaxesRecoverableRelatedToAfudcEquityMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_IncomeTaxesRecoverableRelatedtoImplementationoftheMichiganCorporateIncomeTaxMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income Taxes Recoverable Related to Implementation of the Michigan Corporate Income Tax",
        "label": "Income Taxes Recoverable Related to Implementation of the Michigan Corporate Income Tax [Member]",
        "terseLabel": "Income Taxes Recoverable Related to Implementation of the Michigan Corporate Income Tax"
       }
      }
     },
     "localname": "IncomeTaxesRecoverableRelatedtoImplementationoftheMichiganCorporateIncomeTaxMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_IncometaxesrefundablerelatedtoimplementationofTaxReformMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Income taxes refundable related to implementation of Tax Reform [Member]",
        "label": "Income taxes refundable related to implementation of Tax Reform [Member]",
        "terseLabel": "Income taxes refundable related to implementation of Tax Reform"
       }
      }
     },
     "localname": "IncometaxesrefundablerelatedtoimplementationofTaxReformMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_IncreaseDecreaseInInterestExpense": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (decrease) in Interest Expense",
        "label": "Increase (decrease) in Interest Expense",
        "terseLabel": "Increase (decrease) in Interest Expense"
       }
      }
     },
     "localname": "IncreaseDecreaseInInterestExpense",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_IncreaseDecreaseinEstimatedPotentialRefundRelatedtoReturnonEquityComplaints": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 13.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the estimated potential refund related to return on equity complaints.",
        "label": "Increase (Decrease) in Estimated Potential Refund Related to Return on Equity Complaints",
        "terseLabel": "Net refund settlements and adjustments related to return on equity complaints"
       }
      }
     },
     "localname": "IncreaseDecreaseinEstimatedPotentialRefundRelatedtoReturnonEquityComplaints",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_IncreaseDecreaseinIncomeTaxesReceivablefromSubsidiaries": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Increase (Decrease) in Income Taxes Receivable from Subsidiaries",
        "label": "Increase (Decrease) in Income Taxes Receivable from Subsidiaries",
        "negatedTerseLabel": "Intercompany tax receivable from subsidiaries"
       }
      }
     },
     "localname": "IncreaseDecreaseinIncomeTaxesReceivablefromSubsidiaries",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_Intercompanytaxpayabletosubsidiaries": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Intercompany tax payable to subsidiaries",
        "label": "Intercompany tax payable to subsidiaries",
        "terseLabel": "Intercompany tax payable to subsidiaries"
       }
      }
     },
     "localname": "Intercompanytaxpayabletosubsidiaries",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_Intercompanytaxreceivablefromsubsidiaries": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Intercompany tax receivable from subsidiaries",
        "label": "Intercompany tax receivable from subsidiaries",
        "terseLabel": "Intercompany tax receivable from subsidiaries"
       }
      }
     },
     "localname": "Intercompanytaxreceivablefromsubsidiaries",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_InterestCostsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interest Costs [Member]",
        "label": "Interest Costs [Member]",
        "terseLabel": "Interest Costs"
       }
      }
     },
     "localname": "InterestCostsMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_InternationalEquityFundsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "International Equity Funds [Member]",
        "label": "International Equity Funds [Member]",
        "terseLabel": "International Equity Funds [Member]"
       }
      }
     },
     "localname": "InternationalEquityFundsMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_InterstatePowerAndLightCompanyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Interstate Power and Light Company [Member]",
        "label": "Interstate Power and Light Company [Member]",
        "terseLabel": "IP&amp;L"
       }
      }
     },
     "localname": "InterstatePowerAndLightCompanyMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ItcGreatPlainsLlcMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "ITC Great Plains LLC",
        "label": "ITC Great Plains LLC [Member]",
        "terseLabel": "ITC Great Plains",
        "verboseLabel": "ITC Great Plains"
       }
      }
     },
     "localname": "ItcGreatPlainsLlcMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ItcMidwestLlcMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "ITC Midwest LLC",
        "label": "ITC Midwest LLC [Member]",
        "terseLabel": "ITC Midwest"
       }
      }
     },
     "localname": "ItcMidwestLlcMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ItctransmissionMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "ITCTransmission",
        "label": "ITCTransmission [Member]",
        "terseLabel": "ITCTransmission"
       }
      }
     },
     "localname": "ItctransmissionMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_JointlyOwnedElectricityTransmissionSystemLinesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Jointly Owned Electricity Transmission System \u2013 Lines [Member]",
        "label": "Jointly Owned Electricity Transmission System \u2013 Lines [Member]",
        "terseLabel": "Lines"
       }
      }
     },
     "localname": "JointlyOwnedElectricityTransmissionSystemLinesMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_JointlyOwnedElectricityTransmissionSystemSubstationsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Jointly Owned Electricity Transmission System - Substations [Member]",
        "label": "Jointly Owned Electricity Transmission System - Substations [Member]",
        "terseLabel": "Substations"
       }
      }
     },
     "localname": "JointlyOwnedElectricityTransmissionSystemSubstationsMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_JointlyOwnedUtilityPlantCoordinatedServicesTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Jointly Owned Utility Plant/Coordinated Services [Text Block]",
        "label": "Jointly Owned Utility Plant Coordinated Services [Text Block]",
        "terseLabel": "JOINTLY OWNED UTILITY PLANT/COORDINATED SERVICE"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantCoordinatedServicesTextBlock",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICES"
     ],
     "xbrltype": "textBlockItemType"
    },
    "itc_LineOfCreditFacilitiesAndOtherDebtTotalAmountOutstanding": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line of Credit Facilities and Other Debt, Total Amount Outstanding",
        "label": "Line of Credit Facilities and Other Debt, Total Amount Outstanding",
        "terseLabel": "Book value of revolving credit agreements and term loan credit agreements",
        "verboseLabel": "Line of Credit Facilities and Other Debt, Total Amount Outstanding"
       }
      }
     },
     "localname": "LineOfCreditFacilitiesAndOtherDebtTotalAmountOutstanding",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_LineofCreditFacilityRemainingBorrowingCapacityAdjustedforCommercialPaperOutstanding": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line of Credit Facility, Remaining Borrowing Capacity Adjusted for Commercial Paper Outstanding",
        "label": "Line of Credit Facility, Remaining Borrowing Capacity Adjusted for Commercial Paper Outstanding",
        "terseLabel": "Line of Credit Facility, Remaining Borrowing Capacity Adjusted for Commercial Paper Outstanding"
       }
      }
     },
     "localname": "LineofCreditFacilityRemainingBorrowingCapacityAdjustedforCommercialPaperOutstanding",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_MISOOperatingSubsidiariesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "MISO Operating Subsidiaries [Member]",
        "label": "MISO Operating Subsidiaries [Member]",
        "terseLabel": "MISO Operating Subsidiaries"
       }
      }
     },
     "localname": "MISOOperatingSubsidiariesMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_MetcLlcMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "METC LLC [Member]",
        "label": "METC LLC [Member]",
        "terseLabel": "METC"
       }
      }
     },
     "localname": "MetcLlcMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_MunicipalpoweragencyMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Municipal power agency",
        "label": "Municipal power agency [Member]",
        "terseLabel": "Municipal power agency"
       }
      }
     },
     "localname": "MunicipalpoweragencyMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_MutualfundequitysecuritiesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Mutual fund - equity securities [Member]",
        "label": "Mutual fund - equity securities [Member]",
        "terseLabel": "Mutual fund - equity securities [Member]"
       }
      }
     },
     "localname": "MutualfundequitysecuritiesMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_MutualfundfixedincomesecuritiesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Mutual fund - fixed income securities [Member]",
        "label": "Mutual fund - fixed income securities [Member]",
        "terseLabel": "Mutual fund - fixed income securities [Member]"
       }
      }
     },
     "localname": "MutualfundfixedincomesecuritiesMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_NetActuarialGainMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net Actuarial Gain",
        "label": "Net Actuarial Gain [Member]",
        "terseLabel": "Net Actuarial Loss"
       }
      }
     },
     "localname": "NetActuarialGainMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_NetActuarialLossMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net Actuarial Loss",
        "label": "Net Actuarial Loss [Member]",
        "terseLabel": "Net Actuarial Gain"
       }
      }
     },
     "localname": "NetActuarialLossMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_NetPriorServiceCreditMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net Prior Service Credit",
        "label": "Net Prior Service Credit [Member]",
        "terseLabel": "Net Prior Service Credit"
       }
      }
     },
     "localname": "NetPriorServiceCreditMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_NetRefundsCollectionsOfRevenueDeferralsAndAccrualsIncludingInterest": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net Refunds (Collections) Of Revenue Deferrals and Accruals, Including Interest, During the Period",
        "label": "Net Refunds (Collections) Of Revenue Deferrals And Accruals Including Interest",
        "negatedTerseLabel": "Net collection of 2019 revenue deferrals and accruals, including accrued interest"
       }
      }
     },
     "localname": "NetRefundsCollectionsOfRevenueDeferralsAndAccrualsIncludingInterest",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSChangesinRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_NetRegulatoryAssetLiabilityAssociatedwithRevenueAccrualsandDeferrals": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net Regulatory Asset (Liability) Associated with Revenue Accruals and Deferrals",
        "label": "Net Regulatory Asset (Liability) Associated with Revenue Accruals and Deferrals",
        "periodEndLabel": "Net regulatory liabilities as of December 31, 2021",
        "periodStartLabel": "Net regulatory assets as of December 31, 2020",
        "terseLabel": "Net regulatory (liabilities) assets"
       }
      }
     },
     "localname": "NetRegulatoryAssetLiabilityAssociatedwithRevenueAccrualsandDeferrals",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSChangesinRegulatoryAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_NetRevenueAccrualsDeferralsForThePeriod": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net Revenue Accruals (Deferrals) For The Period",
        "label": "Net Revenue Accruals (Deferrals) For The Period",
        "terseLabel": "Net revenue deferral for the year ended December 31, 2021"
       }
      }
     },
     "localname": "NetRevenueAccrualsDeferralsForThePeriod",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSChangesinRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_OtherComprehensiveIncomeLossGainLossonDerivativesQualifyingasHedgesTax": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other Comprehensive Income (Loss), Gain (Loss) on Derivatives Qualifying as Hedges, Tax",
        "label": "Other Comprehensive Income (Loss), Gain (Loss) on Derivatives Qualifying as Hedges, Tax",
        "terseLabel": "Other Comprehensive Income (Loss), Gain (Loss) on Derivatives Qualifying as Hedges, Tax"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossGainLossonDerivativesQualifyingasHedgesTax",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_OtherMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other",
        "label": "Other [Member]",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "OtherMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_OtherservicesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Other services [Member]",
        "label": "Other services [Member]",
        "terseLabel": "Other services"
       }
      }
     },
     "localname": "OtherservicesMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REVENUEDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_OwnershipPercentageofMinorityInvestorUponCompletionofMerger": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ownership Percentage of Minority Investor Upon Completion of Merger",
        "label": "Ownership Percentage of Minority Investor Upon Completion of Merger",
        "terseLabel": "Ownership Percentage of Minority Investor Upon Completion of Merger"
       }
      }
     },
     "localname": "OwnershipPercentageofMinorityInvestorUponCompletionofMerger",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GENERALDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_PensionsAndPostretirementMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Pensions and Postretirement",
        "label": "Pensions and Postretirement [Member]",
        "terseLabel": "Pensions and Postretirement"
       }
      }
     },
     "localname": "PensionsAndPostretirementMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_PresidingAdministrativeLawJudgeInitialDecisionMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Presiding Administrative Law Judge Initial Decision [Member]",
        "label": "Presiding Administrative Law Judge Initial Decision [Member]",
        "terseLabel": "Presiding Administrative Law Judge Initial Decision"
       }
      }
     },
     "localname": "PresidingAdministrativeLawJudgeInitialDecisionMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ProceedsfromPaymentstoSubsidiariesRelatedtoTax": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proceeds from (Payments to) Subsidiaries Related to Tax",
        "label": "Proceeds from (Payments to) Subsidiaries Related to Tax",
        "terseLabel": "Net intercompany tax payments from (to) subsidiaries"
       }
      }
     },
     "localname": "ProceedsfromPaymentstoSubsidiariesRelatedtoTax",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_PublicUtilitiesRegulatoryComplaintAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Public Utilities, Regulatory Complaint [Axis]",
        "label": "Public Utilities, Regulatory Complaint [Axis]",
        "terseLabel": "Public Utilities, Regulatory Complaint [Axis]"
       }
      }
     },
     "localname": "PublicUtilitiesRegulatoryComplaintAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_PublicUtilitiesRegulatoryComplaintDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Public Utilities, Regulatory Complaint [Axis]",
        "label": "Public Utilities, Regulatory Complaint [Domain]",
        "terseLabel": "Public Utilities, Regulatory Complaint [Domain]"
       }
      }
     },
     "localname": "PublicUtilitiesRegulatoryComplaintDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_PublicUtilitiesRegulatoryComplaintProceedingItemsAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Public Utilities Regulatory Complaint Proceeding Items [Axis]",
        "label": "Public Utilities Regulatory Complaint Proceeding Items [Axis]",
        "terseLabel": "Public Utilities Regulatory Complaint Proceeding Items [Axis]"
       }
      }
     },
     "localname": "PublicUtilitiesRegulatoryComplaintProceedingItemsAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_PublicUtilitiesRegulatoryComplaintProceedingItemsDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Public Utilities Regulatory Complaint Proceeding Items [Axis]",
        "label": "Public Utilities Regulatory Complaint Proceeding Items [Domain]",
        "terseLabel": "Public Utilities Regulatory Complaint Proceeding Items [Domain]"
       }
      }
     },
     "localname": "PublicUtilitiesRegulatoryComplaintProceedingItemsDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RateOfReturnOnEquity": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate Of Return On Equity",
        "label": "Rate Of Return On Equity",
        "terseLabel": "Rate of return on equity"
       }
      }
     },
     "localname": "RateOfReturnOnEquity",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_RateofReturnonEquityandCapitalStructureComplaintsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate of Return on Equity and Capital Structure Complaints [Member]",
        "label": "Rate of Return on Equity and Capital Structure Complaints [Member]",
        "terseLabel": "Rate of Return on Equity and Capital Structure Complaints"
       }
      }
     },
     "localname": "RateofReturnonEquityandCapitalStructureComplaintsMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RateofReturnonEquityandCapitalStructureInitialComplaintMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate of Return on Equity and Capital Structure Initial Complaint [Member]",
        "label": "Rate of Return on Equity and Capital Structure Initial Complaint [Member]",
        "terseLabel": "Rate of Return on Equity and Capital Structure Initial Complaint"
       }
      }
     },
     "localname": "RateofReturnonEquityandCapitalStructureInitialComplaintMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RateofReturnonEquityandCapitalStructureSecondComplaintMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate of Return on Equity and Capital Structure Second Complaint [Member]",
        "label": "Rate of Return on Equity and Capital Structure Second Complaint [Member]",
        "terseLabel": "Rate of Return on Equity and Capital Structure Second Complaint"
       }
      }
     },
     "localname": "RateofReturnonEquityandCapitalStructureSecondComplaintMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RecommendedRateofReturnonEquity": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Recommended Rate of Return on Equity",
        "label": "Recommended Rate of Return on Equity",
        "terseLabel": "Recommended rate of return on equity"
       }
      }
     },
     "localname": "RecommendedRateofReturnonEquity",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_ReducedRateOfReturnOnEquity": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reduced Rate of Return on Equity",
        "label": "Reduced Rate of Return on Equity",
        "terseLabel": "Reduced Rate of Return on Equity"
       }
      }
     },
     "localname": "ReducedRateOfReturnOnEquity",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_RefundRelatedToTheInitialComplaintAccruedInterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Refund related to the Initial Complaint, Accrued Interest",
        "label": "Refund related to the Initial Complaint, Accrued Interest [Member]",
        "terseLabel": "Refund related to the Initial Complaint, Accrued Interest"
       }
      }
     },
     "localname": "RefundRelatedToTheInitialComplaintAccruedInterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RefundRelatedToTheInitialComplaintIncludingAccruedInterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Refund related to the Initial Complaint, Including Accrued Interest",
        "label": "Refund related to the Initial Complaint, Including Accrued Interest [Member]",
        "terseLabel": "Refund related to the Initial Complaint, Including Accrued Interest"
       }
      }
     },
     "localname": "RefundRelatedToTheInitialComplaintIncludingAccruedInterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RefundRelatedToTheInitialComplaintIncludingInterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Refund related to the Initial Complaint, Including Interest",
        "label": "Refund related to the Initial Complaint, Including Interest [Member]",
        "terseLabel": "Refund related to the Initial Complaint, Including Interest"
       }
      }
     },
     "localname": "RefundRelatedToTheInitialComplaintIncludingInterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RefundableDepositsFromGeneratorsForTransmissionNetworkUpgradesFinancingActivities": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Change in refundable deposits from generators for transmission network upgrades.",
        "label": "Refundable Deposits from Generators for Transmission Network Upgrades, Financing Activities",
        "terseLabel": "Refundable deposits from generators for transmission network upgrades"
       }
      }
     },
     "localname": "RefundableDepositsFromGeneratorsForTransmissionNetworkUpgradesFinancingActivities",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_RegulatedOperatingSubsidiariesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulated Operating Subsidiaries [Member]",
        "label": "Regulated Operating Subsidiaries [Member]",
        "terseLabel": "Regulated Operating Subsidiaries"
       }
      }
     },
     "localname": "RegulatedOperatingSubsidiariesMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RegulatoryAssetsAccumulatedAmortization": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulatory Assets, Accumulated Amortization",
        "label": "Regulatory Assets, Accumulated Amortization",
        "terseLabel": "Regulatory assets, accumulated amortization"
       }
      }
     },
     "localname": "RegulatoryAssetsAccumulatedAmortization",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_RegulatoryDeferralsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulatory Deferrals [Member]",
        "label": "Regulatory Deferrals [Member]",
        "terseLabel": "Regulatory Deferrals"
       }
      }
     },
     "localname": "RegulatoryDeferralsMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RegulatoryliabilitygrossupTCJAMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Regulatory liability gross up - TCJA [Member]",
        "label": "Regulatory liability gross up - TCJA [Member]",
        "terseLabel": "Regulatory liability gross up - TCJA"
       }
      }
     },
     "localname": "RegulatoryliabilitygrossupTCJAMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RelatedPartyEquityTransactionsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "related party equity transactions",
        "label": "related party equity transactions [Table Text Block]",
        "terseLabel": "related party equity transactions"
       }
      }
     },
     "localname": "RelatedPartyEquityTransactionsTableTextBlock",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SECScheduleArticle1204CondensedFinancialInformationofRegistrantTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "itc_RelatedPartyTransactionsParentCompanyAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Related Party Transactions Parent Company [Abstract]",
        "label": "Related Party Transactions Parent Company [Abstract]",
        "terseLabel": "Related Party Transactions Parent Company [Abstract]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsParentCompanyAbstract",
     "nsuri": "http://www.itctransco.com/20211231",
     "xbrltype": "stringItemType"
    },
    "itc_RepaymentOfRefundableDepositsFromGeneratorsForTransmissionNetworkUpgrades": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Repayments of refundable deposits from generators for transmission network upgrades.",
        "label": "Repayment of Refundable Deposits from Generators for Transmission Network Upgrades",
        "negatedLabel": "Repayment of refundable deposits from generators for transmission network upgrades"
       }
      }
     },
     "localname": "RepaymentOfRefundableDepositsFromGeneratorsForTransmissionNetworkUpgrades",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_Requiredcustomerrefundpaid": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Required customer refund paid",
        "label": "Required customer refund paid",
        "terseLabel": "Required customer refund paid"
       }
      }
     },
     "localname": "Requiredcustomerrefundpaid",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_RevenueAccrualsAccruedInterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue Accruals, Accrued Interest",
        "label": "Revenue Accruals, Accrued Interest [Member]",
        "terseLabel": "Revenue Accruals, Accrued Interest Less Than $1 Million"
       }
      }
     },
     "localname": "RevenueAccrualsAccruedInterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RevenueAccrualsIncludingAccruedInterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue Accruals, Including Accrued Interest [Member]",
        "label": "Revenue Accruals, Including Accrued Interest [Member]",
        "terseLabel": "Revenue Accruals, Including Accrued Interest"
       }
      }
     },
     "localname": "RevenueAccrualsIncludingAccruedInterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RevenueAccrualsandDeferralsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue Accruals and Deferrals [Abstract]",
        "label": "Revenue Accruals and Deferrals [Abstract]",
        "terseLabel": "Revenue Accruals and Deferrals"
       }
      }
     },
     "localname": "RevenueAccrualsandDeferralsAbstract",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSChangesinRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_RevenueDeferralsAccruedInterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue Deferrals, Accrued Interest",
        "label": "Revenue Deferrals, Accrued Interest [Member]",
        "terseLabel": "Revenue Deferrals, Accrued Interest [Member]"
       }
      }
     },
     "localname": "RevenueDeferralsAccruedInterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RevenueDeferralsIncludingAccruedInterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue Deferrals, Including Accrued Interest [Member]",
        "label": "Revenue Deferrals, Including Accrued Interest [Member]",
        "terseLabel": "Revenue Deferrals, Including Accrued Interest"
       }
      }
     },
     "localname": "RevenueDeferralsIncludingAccruedInterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RevenueTrueUpAmountReflectedInCustomerBillPeriodOfRecognition": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The time period from the time the true-up amount is calculated from revenue accruals and deferrals based on revenue requirements to the time the true-up amount is reflected in customer bills.",
        "label": "Revenue True-up Amount Reflected In Customer Bill, Period of Recognition",
        "terseLabel": "Revenue true-up amount reflected in customer bill, period of recognition"
       }
      }
     },
     "localname": "RevenueTrueUpAmountReflectedInCustomerBillPeriodOfRecognition",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "itc_RevenueinitiallyrecognizedDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Revenue initially recognized [Axis]",
        "label": "Revenue initially recognized [Domain]",
        "terseLabel": "Revenue initially recognized [Domain]"
       }
      }
     },
     "localname": "RevenueinitiallyrecognizedDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_RevisedBaseRateOfReturnOnEquity": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revised Base Rate Of Return On Equity",
        "label": "Revised Base Rate Of Return On Equity",
        "terseLabel": "Revised base rate of return on equity"
       }
      }
     },
     "localname": "RevisedBaseRateOfReturnOnEquity",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_RevisedRateOfReturnOnEquity": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revised Rate Of Return On Equity",
        "label": "Revised Rate Of Return On Equity",
        "terseLabel": "Revised rate of return on equity"
       }
      }
     },
     "localname": "RevisedRateOfReturnOnEquity",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_RevolvingCreditAgreementdueOctober212022Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revolving Credit Agreement due October 21, 2022 [Member]",
        "label": "Revolving Credit Agreement due October 21, 2022 [Member]",
        "terseLabel": "Revolving Credit Agreement due October 21, 2022"
       }
      }
     },
     "localname": "RevolvingCreditAgreementdueOctober212022Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ScheduleOfChangesInRegulatoryAssetsAndLiabilitiesFormulaRateRevenueAccrualsAndDeferralsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule Of Changes In Regulatory Assets And Liabilities Formula Rate Revenue Accruals And Deferrals",
        "label": "Schedule Of Changes In Regulatory Assets And Liabilities Formula Rate Revenue Accruals And Deferrals [Table Text Block]",
        "terseLabel": "Schedule Of Changes In Regulatory Assets And Liabilities Formula Rate Revenue Accruals And Deferrals"
       }
      }
     },
     "localname": "ScheduleOfChangesInRegulatoryAssetsAndLiabilitiesFormulaRateRevenueAccrualsAndDeferralsTableTextBlock",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "itc_ScheduleOfDebtInstrumentsTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of Debt Instruments [Table]",
        "label": "Schedule of Debt Instruments [Table]",
        "terseLabel": "Schedule of Debt Instruments [Table]"
       }
      }
     },
     "localname": "ScheduleOfDebtInstrumentsTable",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_ScheduleOfDeferredTaxAssetsAndLiabilitiesTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of Deferred Tax Assets and Liabilities [Table]",
        "label": "Schedule of Deferred Tax Assets and Liabilities [Table]",
        "terseLabel": "Schedule of Deferred Tax Assets and Liabilities [Table]"
       }
      }
     },
     "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTable",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_ScheduleOfGoodwillAndIntangibleAssetsTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of Goodwill and Intangible Assets [Table]",
        "label": "Schedule of Goodwill and Intangible Assets [Table]",
        "terseLabel": "Schedule of Goodwill and Intangible Assets [Table]"
       }
      }
     },
     "localname": "ScheduleOfGoodwillAndIntangibleAssetsTable",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_ScheduleOfImpactsFromTheROEComplaintsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule Of Impacts from the ROE Complaints",
        "label": "Schedule Of Impacts from the ROE Complaints [Table Text Block]",
        "terseLabel": "Schedule Of Impacts from the ROE Complaints [Table]"
       }
      }
     },
     "localname": "ScheduleOfImpactsFromTheROEComplaintsTableTextBlock",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "itc_ScheduleofRegulatoryAssetsandLiabilitiesAssociatedwithRegulatedOperatingSubsidiariesFormulaRateRevenueAccrualsandDeferralsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the current and non-current regulatory assets and liabilities associated with our Regulated Operating Subsidiaries' formula rate revenue accruals and deferrals.",
        "label": "Schedule of Regulatory Assets and Liabilities Associated with Regulated Operating Subsidiaries' Formula Rate Revenue Accruals and Deferrals [Table Text Block]",
        "terseLabel": "Schedule of Regulatory Assets and Liabilities"
       }
      }
     },
     "localname": "ScheduleofRegulatoryAssetsandLiabilitiesAssociatedwithRegulatedOperatingSubsidiariesFormulaRateRevenueAccrualsandDeferralsTableTextBlock",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "itc_ScheduleofRegulatoryAssetsandLiabilitiesLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Line Items] for Schedule of Regulatory Assets and Liabilities [Table]",
        "label": "Schedule of Regulatory Assets and Liabilities [Line Items]",
        "terseLabel": "Schedule of Regulatory Assets and Liabilities [Line Items]"
       }
      }
     },
     "localname": "ScheduleofRegulatoryAssetsandLiabilitiesLineItems",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_ScheduleofRegulatoryAssetsandLiabilitiesTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of Regulatory Assets and Liabilities [Table]",
        "label": "Schedule of Regulatory Assets and Liabilities [Table]",
        "terseLabel": "Schedule of Regulatory Assets and Liabilities [Table]"
       }
      }
     },
     "localname": "ScheduleofRegulatoryAssetsandLiabilitiesTable",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_SeniorNoteDueMay142030Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Note, Due May 14, 2030",
        "label": "Senior Note, Due May 14, 2030 [Member]",
        "terseLabel": "Senior Note, Due May 14, 2030 [Member]"
       }
      }
     },
     "localname": "SeniorNoteDueMay142030Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesDueJanuary152020Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes due January 15, 2020 [Member]",
        "label": "Senior Notes due January 15, 2020 [Member]",
        "terseLabel": "Senior Notes, due January 15, 2020"
       }
      }
     },
     "localname": "SeniorNotesDueJanuary152020Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesDueJuly12023Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes, Due July 1, 2023 [Member]",
        "label": "Senior Notes, Due July 1, 2023 [Member]",
        "terseLabel": "Senior Notes, due July 1, 2023"
       }
      }
     },
     "localname": "SeniorNotesDueJuly12023Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesDueJuly12043Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes, due July 1, 2043 [Member]",
        "label": "Senior Notes, Due July 1, 2043 [Member]",
        "terseLabel": "Senior Notes, due July 1, 2043"
       }
      }
     },
     "localname": "SeniorNotesDueJuly12043Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesDueMay142030Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes, Due May 14, 2030",
        "label": "Senior Notes, Due May 14, 2030 [Member]",
        "terseLabel": "Senior Notes, Due May 14, 2030"
       }
      }
     },
     "localname": "SeniorNotesDueMay142030Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesDueNovember152022Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes, Due November 15, 2022 [Member]",
        "label": "Senior Notes, Due November 15, 2022 [Member]",
        "terseLabel": "Senior Notes, Due November 15, 2022"
       }
      }
     },
     "localname": "SeniorNotesDueNovember152022Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesDueNovember152027Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes, Due November 15, 2027 [Member]",
        "label": "Senior Notes, Due November 15, 2027 [Member]",
        "terseLabel": "Senior Notes, Due November 15, 2027"
       }
      }
     },
     "localname": "SeniorNotesDueNovember152027Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesdueJune152024Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes, due June 15, 2024 [Member]",
        "label": "Senior Notes, due June 15, 2024 [Member]",
        "terseLabel": "Senior Notes, due June 15, 2024"
       }
      }
     },
     "localname": "SeniorNotesdueJune152024Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorNotesdueSeptember302036Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Notes due September 30, 2036 [Member]",
        "label": "Senior Notes due September 30, 2036 [Member]",
        "terseLabel": "Senior Notes, due September 30, 2036"
       }
      }
     },
     "localname": "SeniorNotesdueSeptember302036Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesDueAugust32051Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes due August 3, 2051",
        "label": "Senior Secured Notes due August 3, 2051 [Member]",
        "terseLabel": "Senior Secured Notes due August 3, 2051"
       }
      }
     },
     "localname": "SeniorSecuredNotesDueAugust32051Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesDueMay62040Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes due May 6, 2040 [Member]",
        "label": "Senior Secured Notes due May 6, 2040 [Member]",
        "terseLabel": "Senior Secured Notes, due May 6, 2040"
       }
      }
     },
     "localname": "SeniorSecuredNotesDueMay62040Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesDueOctober142055Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes due October 14, 2055",
        "label": "Senior Secured Notes due October 14, 2055 [Member]",
        "terseLabel": "Senior Secured Notes due October 14, 2055 [Member]"
       }
      }
     },
     "localname": "SeniorSecuredNotesDueOctober142055Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesDueOctober262042Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes, due October 26, 2042 [Member]",
        "label": "Senior Secured Notes, due October 26, 2042 [Member]",
        "terseLabel": "Senior Secured Notes, due October 26, 2042"
       }
      }
     },
     "localname": "SeniorSecuredNotesDueOctober262042Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesdueApril262046Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes, due April 26, 2046 [Member]",
        "label": "Senior Secured Notes, due April 26, 2046 [Member]",
        "terseLabel": "Senior Secured Notes, due April 26, 2046"
       }
      }
     },
     "localname": "SeniorSecuredNotesdueApril262046Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesdueDecember152044Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes, due December 15, 2044 [Member]",
        "label": "Senior Secured Notes, due December 15, 2044 [Member]",
        "terseLabel": "Senior Secured Notes, due December 15, 2044"
       }
      }
     },
     "localname": "SeniorSecuredNotesdueDecember152044Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesdueJanuary152049MemberMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes, due January 15, 2049",
        "label": "Senior Secured Notes, due January 15, 2049 [Member] [Member]",
        "terseLabel": "Senior Secured Notes, due January 15, 2049 [Member] [Member]"
       }
      }
     },
     "localname": "SeniorSecuredNotesdueJanuary152049MemberMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_SeniorSecuredNotesdueJuly102049MemberMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Senior Secured Notes, due July 10, 2049[Member] [Member]",
        "label": "Senior Secured Notes, due July 10, 2049[Member] [Member]",
        "terseLabel": "Senior Secured Notes, due July 10, 2049[Member] [Member]"
       }
      }
     },
     "localname": "SeniorSecuredNotesdueJuly102049MemberMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ServiceCostsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Service Costs [Member]",
        "label": "Service Costs [Member]",
        "terseLabel": "Service Costs"
       }
      }
     },
     "localname": "ServiceCostsMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_ShareBasedCompensationArrangementbyShareBasedPaymentAwardPayoutofTargetAwardPercent": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share-Based Compensation Arrangement by Share-Based Payment Award, Payout of Target Award, Percent",
        "label": "Share-Based Compensation Arrangement by Share-Based Payment Award, Payout of Target Award, Percent",
        "terseLabel": "Share-Based Compensation Arrangement by Share-Based Payment Award, Payout of Target Award, Percent"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementbyShareBasedPaymentAwardPayoutofTargetAwardPercent",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_ShortTermDebtWeightedAverageDaystoMaturity": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Short-Term Debt, Weighted Average Days to Maturity",
        "label": "Short-Term Debt, Weighted Average Days to Maturity",
        "terseLabel": "Short-Term Debt, Weighted Average Days to Maturity"
       }
      }
     },
     "localname": "ShortTermDebtWeightedAverageDaystoMaturity",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "itc_StartupDevelopmentandPreconstructionMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Start-up, Development and Pre-construction",
        "label": "Start-up, Development and Pre-construction [Member]",
        "terseLabel": "Start-up, Development and Pre-construction Expenses, Including Associated Carrying Charges"
       }
      }
     },
     "localname": "StartupDevelopmentandPreconstructionMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_StateIncomeTaxRate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "State Income Tax Rate",
        "label": "State Income Tax Rate",
        "terseLabel": "State income tax rate"
       }
      }
     },
     "localname": "StateIncomeTaxRate",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "itc_TaxCutsandJobsActof2017Axis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax Cuts and Jobs Act of 2017 [Axis]",
        "label": "Tax Cuts and Jobs Act of 2017 [Axis]",
        "terseLabel": "Tax Cuts and Jobs Act of 2017 [Axis]"
       }
      }
     },
     "localname": "TaxCutsandJobsActof2017Axis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_TaxCutsandJobsActof2017Domain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Tax Cuts and Jobs Act of 2017 [Axis]",
        "label": "Tax Cuts and Jobs Act of 2017 [Domain]",
        "terseLabel": "Tax Cuts and Jobs Act of 2017 [Domain]"
       }
      }
     },
     "localname": "TaxCutsandJobsActof2017Domain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_TaxPaymentsToFromSubsidiaryUnderIntercompanyTaxSharingAgreement": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tax Payments (To) From Subsidiary Under Intercompany Tax Sharing Agreement",
        "label": "Tax Payments (To) From Subsidiary Under Intercompany Tax Sharing Agreement",
        "terseLabel": "Tax payments (to) from subsidiary under intercompany tax sharing arrangement"
       }
      }
     },
     "localname": "TaxPaymentsToFromSubsidiaryUnderIntercompanyTaxSharingAgreement",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "itc_TermLoanCreditAgreementDueDecember72018Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Term Loan Credit Agreement, Due December 7, 2018 [Member]",
        "label": "Term Loan Credit Agreement, Due December 7, 2018 [Member]",
        "terseLabel": "Term Loan Credit Agreement, Due December 7, 2018 [Member]"
       }
      }
     },
     "localname": "TermLoanCreditAgreementDueDecember72018Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_TermLoanCreditAgreementDueJune112021MemberMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Term Loan Credit Agreement, Due June 11, 2021 [Member]",
        "label": "Term Loan Credit Agreement, Due June 11, 2021 [Member] [Member]",
        "terseLabel": "Term Loan Credit Agreement, Due June 11, 2021 [Member] [Member]"
       }
      }
     },
     "localname": "TermLoanCreditAgreementDueJune112021MemberMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_TransmissionRateApplicablePeriod": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Transmission Rate, Applicable Period",
        "label": "Transmission Rate, Applicable Period",
        "terseLabel": "Transmission rate, applicable period"
       }
      }
     },
     "localname": "TransmissionRateApplicablePeriod",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "itc_TrueupadjustmentprincipalandinterestMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "True up adjustment principal and interest [Member]",
        "label": "True up adjustment principal and interest [Member]",
        "terseLabel": "True up adjustment principal and interest"
       }
      }
     },
     "localname": "TrueupadjustmentprincipalandinterestMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_TypeOfOperatingCostAndExpenseAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type Of Operating Cost And Expense [Axis]",
        "label": "Type Of Operating Cost And Expense [Axis]",
        "terseLabel": "Type Of Operating Cost And Expense [Axis]"
       }
      }
     },
     "localname": "TypeOfOperatingCostAndExpenseAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GENERALDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_TypeOfOperatingCostAndExpenseDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type Of Operating Cost And Expense",
        "label": "Type Of Operating Cost And Expense [Domain]",
        "terseLabel": "Type Of Operating Cost And Expense [Domain]"
       }
      }
     },
     "localname": "TypeOfOperatingCostAndExpenseDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/GENERALDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_U.S.EquitySecuritiesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "U.S. Equity Securities [Member]",
        "label": "U.S. Equity Securities [Member]",
        "terseLabel": "U.S. Equity Securities [Member]"
       }
      }
     },
     "localname": "U.S.EquitySecuritiesMember",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_UnsecuredNotesdueJune302026Member": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Unsecured Notes, due June 30, 2026 [Member]",
        "label": "Unsecured Notes, due June 30, 2026 [Member]",
        "terseLabel": "Unsecured Notes, due June 30, 2026"
       }
      }
     },
     "localname": "UnsecuredNotesdueJune302026Member",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_WeightedAverageDiscountRateAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted Average Discount Rate [Axis]",
        "label": "Weighted Average Discount Rate [Axis]",
        "terseLabel": "Weighted Average Discount Rate [Axis]"
       }
      }
     },
     "localname": "WeightedAverageDiscountRateAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "itc_WeightedAverageDiscountRateDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "[Domain] for Weighted Average Discount Rate [Axis]",
        "label": "Weighted Average Discount Rate [Domain]",
        "terseLabel": "Weighted Average Discount Rate [Domain]"
       }
      }
     },
     "localname": "WeightedAverageDiscountRateDomain",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "itc_YearRevenueInitiallyRecognizedAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue initially recognized [Axis]",
        "label": "Year Revenue Initially Recognized [Axis]",
        "terseLabel": "Year Revenue Initially Recognized [Axis]"
       }
      }
     },
     "localname": "YearRevenueInitiallyRecognizedAxis",
     "nsuri": "http://www.itctransco.com/20211231",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Financial Information Disclosure [Abstract]",
        "terseLabel": "Condensed Financial Information Disclosure [Abstract]"
       }
      }
     },
     "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "srt_CondensedFinancialStatementsCaptionsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Financial Statements, Captions [Line Items]",
        "terseLabel": "Condensed Financial Statements, Captions [Line Items]"
       }
      }
     },
     "localname": "CondensedFinancialStatementsCaptionsLineItems",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesAxis": {
     "auth_ref": [
      "r157",
      "r317",
      "r322",
      "r330",
      "r599",
      "r600",
      "r603",
      "r604",
      "r690",
      "r803"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Entities [Axis]",
        "terseLabel": "Consolidated Entities [Axis]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/AuditInformation",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
      "http://www.itctransco.com/role/GENERALDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidatedEntitiesDomain": {
     "auth_ref": [
      "r157",
      "r317",
      "r322",
      "r330",
      "r599",
      "r600",
      "r603",
      "r604",
      "r690",
      "r803"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidated Entities [Domain]",
        "terseLabel": "Consolidated Entities [Domain]"
       }
      }
     },
     "localname": "ConsolidatedEntitiesDomain",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/AuditInformation",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
      "http://www.itctransco.com/role/GENERALDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ConsolidationEliminationsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidation, Eliminations [Member]",
        "terseLabel": "Reconciliations and Eliminations"
       }
      }
     },
     "localname": "ConsolidationEliminationsMember",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ConsolidationItemsAxis": {
     "auth_ref": [
      "r157",
      "r212",
      "r221",
      "r222",
      "r223",
      "r224",
      "r226",
      "r228",
      "r232",
      "r317",
      "r318",
      "r319",
      "r320",
      "r321",
      "r322",
      "r324",
      "r325",
      "r327",
      "r329",
      "r330"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidation Items [Axis]",
        "terseLabel": "Consolidation Items [Axis]"
       }
      }
     },
     "localname": "ConsolidationItemsAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ConsolidationItemsDomain": {
     "auth_ref": [
      "r157",
      "r212",
      "r221",
      "r222",
      "r223",
      "r224",
      "r226",
      "r228",
      "r232",
      "r317",
      "r318",
      "r319",
      "r320",
      "r321",
      "r322",
      "r324",
      "r325",
      "r327",
      "r329",
      "r330"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Consolidation Items [Domain]",
        "terseLabel": "Consolidation Items [Domain]"
       }
      }
     },
     "localname": "ConsolidationItemsDomain",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MajorCustomersAxis": {
     "auth_ref": [
      "r238",
      "r398",
      "r403",
      "r776"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Customer [Axis]",
        "terseLabel": "Major Customers [Axis]"
       }
      }
     },
     "localname": "MajorCustomersAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_MaximumMember": {
     "auth_ref": [
      "r335",
      "r371",
      "r504",
      "r514",
      "r702",
      "r703",
      "r704",
      "r705",
      "r706",
      "r707",
      "r727",
      "r774",
      "r777",
      "r804",
      "r805"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maximum [Member]",
        "terseLabel": "Maximum"
       }
      }
     },
     "localname": "MaximumMember",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_MinimumMember": {
     "auth_ref": [
      "r335",
      "r371",
      "r504",
      "r514",
      "r702",
      "r703",
      "r704",
      "r705",
      "r706",
      "r707",
      "r727",
      "r774",
      "r777",
      "r804",
      "r805"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Minimum [Member]",
        "terseLabel": "Minimum"
       }
      }
     },
     "localname": "MinimumMember",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_NameOfMajorCustomerDomain": {
     "auth_ref": [
      "r238",
      "r398",
      "r403",
      "r776"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Customer [Domain]",
        "terseLabel": "Name of Major Customer [Domain]"
       }
      }
     },
     "localname": "NameOfMajorCustomerDomain",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_OwnershipAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ownership [Axis]",
        "terseLabel": "Ownership [Axis]"
       }
      }
     },
     "localname": "OwnershipAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GENERALDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_OwnershipDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Ownership [Domain]",
        "terseLabel": "Ownership [Domain]"
       }
      }
     },
     "localname": "OwnershipDomain",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GENERALDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ParentCompanyMember": {
     "auth_ref": [
      "r157"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Parent Company [Member]",
        "terseLabel": "ITC Holdings",
        "verboseLabel": "ITC Holdings"
       }
      }
     },
     "localname": "ParentCompanyMember",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/GENERALDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ProductOrServiceAxis": {
     "auth_ref": [
      "r235",
      "r398",
      "r401",
      "r729",
      "r773",
      "r775"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Product and Service [Axis]",
        "terseLabel": "Product and Service [Axis]"
       }
      }
     },
     "localname": "ProductOrServiceAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REVENUEDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_ProductsAndServicesDomain": {
     "auth_ref": [
      "r235",
      "r398",
      "r401",
      "r729",
      "r773",
      "r775"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Product and Service [Domain]",
        "terseLabel": "Product and Service [Domain]"
       }
      }
     },
     "localname": "ProductsAndServicesDomain",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REVENUEDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RangeAxis": {
     "auth_ref": [
      "r335",
      "r371",
      "r440",
      "r504",
      "r514",
      "r702",
      "r703",
      "r704",
      "r705",
      "r706",
      "r707",
      "r727",
      "r774",
      "r777",
      "r804",
      "r805"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statistical Measurement [Axis]",
        "terseLabel": "Statistical Measurement [Axis]"
       }
      }
     },
     "localname": "RangeAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables",
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RangeMember": {
     "auth_ref": [
      "r335",
      "r371",
      "r440",
      "r504",
      "r514",
      "r702",
      "r703",
      "r704",
      "r705",
      "r706",
      "r707",
      "r727",
      "r774",
      "r777",
      "r804",
      "r805"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statistical Measurement [Domain]",
        "terseLabel": "Statistical Measurement [Domain]"
       }
      }
     },
     "localname": "RangeMember",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables",
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_RestatementAxis": {
     "auth_ref": [
      "r3",
      "r160",
      "r161",
      "r162",
      "r166",
      "r167",
      "r172",
      "r173",
      "r174",
      "r175",
      "r177",
      "r178",
      "r179",
      "r180",
      "r181",
      "r182",
      "r191",
      "r266",
      "r267",
      "r542",
      "r576",
      "r632",
      "r637",
      "r638",
      "r639",
      "r780",
      "r781",
      "r782",
      "r783",
      "r784",
      "r785",
      "r786",
      "r787",
      "r788",
      "r789",
      "r834",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revision of Prior Period [Axis]",
        "terseLabel": "Restatement [Axis]"
       }
      }
     },
     "localname": "RestatementAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_RestatementDomain": {
     "auth_ref": [
      "r3",
      "r160",
      "r161",
      "r162",
      "r166",
      "r167",
      "r172",
      "r173",
      "r174",
      "r175",
      "r177",
      "r178",
      "r179",
      "r180",
      "r181",
      "r182",
      "r191",
      "r266",
      "r267",
      "r542",
      "r576",
      "r632",
      "r637",
      "r638",
      "r639",
      "r780",
      "r781",
      "r782",
      "r783",
      "r784",
      "r785",
      "r786",
      "r787",
      "r788",
      "r789",
      "r834",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revision of Prior Period [Domain]",
        "terseLabel": "Restatement [Domain]"
       }
      }
     },
     "localname": "RestatementDomain",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioForecastMember": {
     "auth_ref": [
      "r176",
      "r509"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Forecast [Member]",
        "terseLabel": "Scenario, Forecast",
        "verboseLabel": "Forecast [Member]"
       }
      }
     },
     "localname": "ScenarioForecastMember",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/LEASESDetails",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScenarioUnspecifiedDomain": {
     "auth_ref": [
      "r176",
      "r182",
      "r509"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scenario [Domain]",
        "terseLabel": "Scenario [Domain]"
       }
      }
     },
     "localname": "ScenarioUnspecifiedDomain",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/LEASESDetails",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "srt_ScheduleOfCondensedFinancialStatementsTable": {
     "auth_ref": [
      "r157",
      "r597"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Condensed Financial Statements [Table]",
        "terseLabel": "Schedule of Condensed Financial Statements [Table]",
        "verboseLabel": "Condensed Financial Statements [Table]"
       }
      }
     },
     "localname": "ScheduleOfCondensedFinancialStatementsTable",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTGeneralDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_StatementScenarioAxis": {
     "auth_ref": [
      "r176",
      "r182",
      "r310",
      "r509",
      "r695"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Scenario [Axis]",
        "terseLabel": "Scenario [Axis]"
       }
      }
     },
     "localname": "StatementScenarioAxis",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/LEASESDetails",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "srt_SubsidiariesMember": {
     "auth_ref": [
      "r468",
      "r684",
      "r685",
      "r687"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Subsidiaries [Member]",
        "terseLabel": "Subsidiaries"
       }
      }
     },
     "localname": "SubsidiariesMember",
     "nsuri": "http://fasb.org/srt/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "stpr_MI": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "MICHIGAN",
        "terseLabel": "MICHIGAN"
       }
      }
     },
     "localname": "MI",
     "nsuri": "http://xbrl.sec.gov/stpr/2021",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccountingPoliciesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting Policies [Abstract]",
        "terseLabel": "Accounting Policies [Abstract]"
       }
      }
     },
     "localname": "AccountingPoliciesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountsNotesAndLoansReceivableLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Accounts, Notes, Loans and Financing Receivable [Line Items]",
        "terseLabel": "Accounts, Notes, Loans and Financing Receivable [Line Items]"
       }
      }
     },
     "localname": "AccountsNotesAndLoansReceivableLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis": {
     "auth_ref": [
      "r72"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of receivable.",
        "label": "Receivable Type [Axis]",
        "terseLabel": "Receivable Type [Axis]"
       }
      }
     },
     "localname": "AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccountsPayableAndAccruedLiabilitiesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Primary financial statement caption encompassing accounts payable and accrued liabilities.",
        "label": "Accounts Payable and Accrued Liabilities [Member]",
        "terseLabel": "Accounts Payable and Accrued Liabilities [Member]"
       }
      }
     },
     "localname": "AccountsPayableAndAccruedLiabilitiesMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AccountsPayableCurrent": {
     "auth_ref": [
      "r58",
      "r693"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accounts Payable, Current",
        "terseLabel": "Accounts payable"
       }
      }
     },
     "localname": "AccountsPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccountsPayableRelatedPartiesCurrent": {
     "auth_ref": [
      "r58",
      "r155",
      "r686",
      "r687"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Accounts Payable, Related Parties, Current",
        "terseLabel": "Intercompany payables (less than $1 million)"
       }
      }
     },
     "localname": "AccountsPayableRelatedPartiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccountsReceivableNetCurrent": {
     "auth_ref": [
      "r11",
      "r43",
      "r240",
      "r241"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 2.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.",
        "label": "Accounts Receivable, after Allowance for Credit Loss, Current",
        "terseLabel": "Accounts receivable"
       }
      }
     },
     "localname": "AccountsReceivableNetCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccountsReceivableRelatedPartiesCurrent": {
     "auth_ref": [
      "r71",
      "r155",
      "r685",
      "r687"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.",
        "label": "Accounts Receivable, Related Parties, Current",
        "terseLabel": "Accounts receivable from subsidiaries",
        "verboseLabel": "Intercompany receivables (less than $1 million)"
       }
      }
     },
     "localname": "AccountsReceivableRelatedPartiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment": {
     "auth_ref": [
      "r56",
      "r298"
     ],
     "calculation": {
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.",
        "label": "Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment",
        "negatedTerseLabel": "Less: Accumulated depreciation and amortization",
        "terseLabel": "Property, plant and equipment, accumulated depreciation and amortization"
       }
      }
     },
     "localname": "AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Accumulated Other Comprehensive Income (Loss) [Line Items]",
        "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Line Items]"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeLossLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax": {
     "auth_ref": [
      "r45",
      "r82",
      "r84",
      "r85",
      "r763",
      "r785",
      "r789"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 3.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.",
        "label": "Accumulated Other Comprehensive Income (Loss), Net of Tax",
        "periodEndLabel": "Balance at the end of period",
        "periodStartLabel": "Balance at the beginning of period",
        "terseLabel": "Accumulated other comprehensive loss"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeLossNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeLossTable": {
     "auth_ref": [
      "r94",
      "r95",
      "r664",
      "r665",
      "r666",
      "r667",
      "r668",
      "r670"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about components of accumulated other comprehensive income (loss).",
        "label": "Accumulated Other Comprehensive Income (Loss) [Table]",
        "terseLabel": "Accumulated Other Comprehensive Income (Loss) [Table]"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeLossTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AccumulatedOtherComprehensiveIncomeMember": {
     "auth_ref": [
      "r81",
      "r85",
      "r94",
      "r95",
      "r96",
      "r160",
      "r161",
      "r162",
      "r602",
      "r780",
      "r781",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accumulated increase (decrease) in equity from transactions and other events and circumstances from non-owner sources, attributable to the parent. Excludes net income (loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners.",
        "label": "AOCI Attributable to Parent [Member]",
        "terseLabel": "Accumulated Other Comprehensive Income (Loss)"
       }
      }
     },
     "localname": "AccumulatedOtherComprehensiveIncomeMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AdjustmentsForNewAccountingPronouncementsAxis": {
     "auth_ref": [
      "r0",
      "r1",
      "r2",
      "r3",
      "r4",
      "r166",
      "r167",
      "r168",
      "r170",
      "r182",
      "r248",
      "r249",
      "r260",
      "r261",
      "r262",
      "r263",
      "r266",
      "r267",
      "r316",
      "r534",
      "r535",
      "r536",
      "r537",
      "r538",
      "r539",
      "r540",
      "r542",
      "r573",
      "r574",
      "r575",
      "r576",
      "r628",
      "r629",
      "r630",
      "r631",
      "r632",
      "r633",
      "r634",
      "r636",
      "r637",
      "r638",
      "r639",
      "r652",
      "r653",
      "r654",
      "r655",
      "r656",
      "r657",
      "r661",
      "r662",
      "r680",
      "r731",
      "r732",
      "r733",
      "r778",
      "r779",
      "r780",
      "r781",
      "r782",
      "r783",
      "r784",
      "r785",
      "r786",
      "r787",
      "r788",
      "r789",
      "r831",
      "r832",
      "r833",
      "r834",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by amendment to accounting standards.",
        "label": "Accounting Standards Update [Axis]",
        "terseLabel": "Adjustments for New Accounting Pronouncements [Axis]"
       }
      }
     },
     "localname": "AdjustmentsForNewAccountingPronouncementsAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSRestrictedCashDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSTables",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "Adjustments to reconcile net income to net cash provided by operating activities:",
        "verboseLabel": "Adjustments to reconcile net income to net cash used in operating activities:"
       }
      }
     },
     "localname": "AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AdvancesToAffiliate": {
     "auth_ref": [
      "r15",
      "r791"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Long-Term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. This does not include advances to clients.",
        "label": "Advances to Affiliate",
        "terseLabel": "Advances to Affiliate"
       }
      }
     },
     "localname": "AdvancesToAffiliate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AllocatedShareBasedCompensationExpense": {
     "auth_ref": [
      "r519",
      "r530",
      "r543"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.",
        "label": "Share-based Payment Arrangement, Expense",
        "terseLabel": "Share-based Compensation Expense"
       }
      }
     },
     "localname": "AllocatedShareBasedCompensationExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfFinancingCostsAndDiscounts": {
     "auth_ref": [
      "r131",
      "r355",
      "r365",
      "r366",
      "r674"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.",
        "label": "Amortization of Debt Issuance Costs and Discounts",
        "terseLabel": "Amortization of deferred financing fees and debt discount"
       }
      }
     },
     "localname": "AmortizationOfFinancingCostsAndDiscounts",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfIntangibleAssets": {
     "auth_ref": [
      "r131",
      "r287",
      "r292"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.",
        "label": "Amortization of Intangible Assets",
        "terseLabel": "Amortization expense"
       }
      }
     },
     "localname": "AmortizationOfIntangibleAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AmortizationOfRegulatoryAsset": {
     "auth_ref": [
      "r109",
      "r131"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The expense charged against earnings during the period to allocate the capitalized costs of regulatory assets over the periods expected to benefit from such costs.",
        "label": "Amortization of Regulatory Asset",
        "terseLabel": "Amortization of regulatory asset"
       }
      }
     },
     "localname": "AmortizationOfRegulatoryAsset",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Asset Retirement Obligation [Abstract]",
        "terseLabel": "Asset Retirement Obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetRetirementObligationsNoncurrent": {
     "auth_ref": [
      "r303"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Noncurrent portion of the carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.",
        "label": "Asset Retirement Obligations, Noncurrent",
        "terseLabel": "Asset retirement obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetRetirementObligationsPolicy": {
     "auth_ref": [
      "r304"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for legal obligation associated with retirement of long-lived asset that results from acquisition, construction, or development or from normal operation of long-lived asset. Excludes environmental remediation liability from improper or other-than-normal operation of long-lived asset, obligation arising in connection with leased property that meets definition of lease payments or variable lease payments and from plan to sell or otherwise dispose of a long-lived asset.",
        "label": "Asset Retirement Obligation [Policy Text Block]",
        "terseLabel": "Asset Retirement Obligations"
       }
      }
     },
     "localname": "AssetRetirementObligationsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_Assets": {
     "auth_ref": [
      "r151",
      "r217",
      "r223",
      "r230",
      "r259",
      "r317",
      "r318",
      "r319",
      "r321",
      "r322",
      "r323",
      "r324",
      "r326",
      "r328",
      "r330",
      "r331",
      "r599",
      "r603",
      "r651",
      "r691",
      "r693",
      "r740",
      "r760"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets",
        "terseLabel": "TOTAL ASSETS",
        "totalLabel": "TOTAL ASSETS",
        "verboseLabel": "Total assets"
       }
      }
     },
     "localname": "Assets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets [Abstract]",
        "terseLabel": "ASSETS",
        "verboseLabel": "ASSETS"
       }
      }
     },
     "localname": "AssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsCurrent": {
     "auth_ref": [
      "r12",
      "r13",
      "r76",
      "r151",
      "r259",
      "r317",
      "r318",
      "r319",
      "r321",
      "r322",
      "r323",
      "r324",
      "r326",
      "r328",
      "r330",
      "r331",
      "r599",
      "r603",
      "r651",
      "r691",
      "r693"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 1.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets, Current",
        "totalLabel": "Total current assets"
       }
      }
     },
     "localname": "AssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Assets, Current [Abstract]",
        "terseLabel": "Current assets",
        "verboseLabel": "Current assets"
       }
      }
     },
     "localname": "AssetsCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AssetsFairValueDisclosure": {
     "auth_ref": [
      "r640"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.",
        "label": "Assets, Fair Value Disclosure",
        "terseLabel": "Total - assets"
       }
      }
     },
     "localname": "AssetsFairValueDisclosure",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AssetsNoncurrent": {
     "auth_ref": [
      "r22",
      "r23",
      "r24",
      "r26",
      "r27",
      "r28",
      "r29",
      "r30",
      "r151",
      "r259",
      "r317",
      "r318",
      "r319",
      "r321",
      "r322",
      "r323",
      "r324",
      "r326",
      "r328",
      "r330",
      "r331",
      "r599",
      "r603",
      "r651",
      "r691"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold or consumed after one year or beyond the normal operating cycle, if longer.",
        "label": "Assets, Noncurrent",
        "totalLabel": "Total other assets"
       }
      }
     },
     "localname": "AssetsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_AwardDateAxis": {
     "auth_ref": [
      "r520",
      "r533"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by date or year award under share-based payment arrangement is granted.",
        "label": "Award Date [Axis]",
        "terseLabel": "Award Date [Axis]"
       }
      }
     },
     "localname": "AwardDateAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_AwardDateDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Date or year award under share-based payment arrangement is granted.",
        "label": "Award Date [Domain]",
        "terseLabel": "Award Date [Domain]"
       }
      }
     },
     "localname": "AwardDateDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_AwardTypeAxis": {
     "auth_ref": [
      "r520",
      "r533"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of award under share-based payment arrangement.",
        "label": "Award Type [Axis]",
        "terseLabel": "Award Type [Axis]"
       }
      }
     },
     "localname": "AwardTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BalanceSheetLocationAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by location on balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Axis]",
        "terseLabel": "Balance Sheet Location [Axis]"
       }
      }
     },
     "localname": "BalanceSheetLocationAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BalanceSheetLocationDomain": {
     "auth_ref": [
      "r612",
      "r616"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Location in the balance sheet (statement of financial position).",
        "label": "Balance Sheet Location [Domain]",
        "terseLabel": "Balance Sheet Location [Domain]"
       }
      }
     },
     "localname": "BalanceSheetLocationDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_BalanceSheetRelatedDisclosuresAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Balance Sheet Related Disclosures [Abstract]",
        "terseLabel": "Balance Sheet Additional Disclosures"
       }
      }
     },
     "localname": "BalanceSheetRelatedDisclosuresAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_BusinessAcquisitionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Business Acquisition [Line Items]",
        "terseLabel": "Business Acquisition [Line Items]"
       }
      }
     },
     "localname": "BusinessAcquisitionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GENERALDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CapitalExpendituresIncurredButNotYetPaid": {
     "auth_ref": [
      "r137",
      "r138",
      "r139"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Future cash outflow to pay for purchases of fixed assets that have occurred.",
        "label": "Capital Expenditures Incurred but Not yet Paid",
        "terseLabel": "Additions to property, plant and equipment and other long-lived assets"
       }
      }
     },
     "localname": "CapitalExpendituresIncurredButNotYetPaid",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsAtCarryingValue": {
     "auth_ref": [
      "r9",
      "r51",
      "r133"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 1.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATIONRestrictedCashReconciliation": {
       "order": 1.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.",
        "label": "Cash and Cash Equivalents, at Carrying Value",
        "terseLabel": "Cash and cash equivalents",
        "verboseLabel": "Cash and cash equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsAtCarryingValue",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATIONRestrictedCashReconciliation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsFairValueDisclosure": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Cash and Cash Equivalents, Fair Value Disclosure",
        "terseLabel": "Cash Equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsFairValueDisclosure",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy": {
     "auth_ref": [
      "r21",
      "r135",
      "r737"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Entity's cash and cash equivalents accounting policy with respect to restricted balances.  Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.",
        "label": "Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]",
        "terseLabel": "Cash and Cash Equivalents and Restricted Cash and Cash Equivalents"
       }
      }
     },
     "localname": "CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents": {
     "auth_ref": [
      "r126",
      "r133",
      "r140"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATIONRestrictedCashReconciliation": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents",
        "periodEndLabel": "CASH, CASH EQUIVALENTS AND RESTRICTED CASH \u2014 End of period",
        "periodStartLabel": "CASH, CASH EQUIVALENTS AND RESTRICTED CASH \u2014 Beginning of period",
        "terseLabel": "Total cash, cash equivalents and restricted cash",
        "totalLabel": "Total cash, cash equivalents and restricted cash"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATIONRestrictedCashReconciliation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect": {
     "auth_ref": [
      "r126",
      "r663"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.",
        "label": "Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect",
        "terseLabel": "NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH",
        "totalLabel": "NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH"
       }
      }
     },
     "localname": "CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries": {
     "auth_ref": [
      "r158"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This element represents disclosure of the aggregate cash dividends paid to the entity by consolidated subsidiaries.",
        "label": "SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries",
        "terseLabel": "Dividends from subsidiaries"
       }
      }
     },
     "localname": "CashDividendsPaidToParentCompanyByConsolidatedSubsidiaries",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CashFlowSupplementalDisclosuresTextBlock": {
     "auth_ref": [
      "r141"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for supplemental cash flow activities, including cash, noncash, and part noncash transactions, for the period. Noncash is defined as information about all investing and financing activities of an enterprise during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. \"Part noncash\" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.",
        "label": "Cash Flow, Supplemental Disclosures [Text Block]",
        "terseLabel": "SUPPLEMENTAL FINANCIAL INFORMATION"
       }
      }
     },
     "localname": "CashFlowSupplementalDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATION"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ClassOfStockDomain": {
     "auth_ref": [
      "r148",
      "r151",
      "r185",
      "r186",
      "r187",
      "r189",
      "r190",
      "r195",
      "r196",
      "r197",
      "r259",
      "r317",
      "r322",
      "r323",
      "r324",
      "r330",
      "r331",
      "r369",
      "r370",
      "r373",
      "r377",
      "r651",
      "r822"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock.",
        "label": "Class of Stock [Domain]",
        "terseLabel": "Class of Stock [Domain]"
       }
      }
     },
     "localname": "ClassOfStockDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommercialPaper": {
     "auth_ref": [
      "r31",
      "r741",
      "r761"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.",
        "label": "Commercial Paper",
        "terseLabel": "Commercial Paper"
       }
      }
     },
     "localname": "CommercialPaper",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CommercialPaperMember": {
     "auth_ref": [
      "r313"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Unsecured promissory note (generally negotiable) that provides institutions with short-term funds.",
        "label": "Commercial Paper [Member]",
        "terseLabel": "Commercial Paper"
       }
      }
     },
     "localname": "CommercialPaperMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommitmentsAndContingencies": {
     "auth_ref": [
      "r68",
      "r309",
      "r746",
      "r767"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.",
        "label": "Commitments and Contingencies",
        "terseLabel": "Commitments and contingent liabilities (Notes 5 and 17)"
       }
      }
     },
     "localname": "CommitmentsAndContingencies",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Commitments and Contingencies Disclosure [Abstract]",
        "terseLabel": "Commitments and Contingencies Disclosure [Abstract]"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_CommitmentsAndContingenciesDisclosureTextBlock": {
     "auth_ref": [
      "r306",
      "r307",
      "r308",
      "r311",
      "r798"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for commitments and contingencies.",
        "label": "Commitments and Contingencies Disclosure [Text Block]",
        "terseLabel": "COMMITMENTS AND CONTINGENT LIABILITIES"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIES"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CommitmentsAndContingenciesPolicyTextBlock": {
     "auth_ref": [
      "r312",
      "r799"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for commitments and contingencies, which may include policies for recognizing and measuring loss and gain contingencies.",
        "label": "Commitments and Contingencies, Policy [Policy Text Block]",
        "terseLabel": "Contingent Obligations"
       }
      }
     },
     "localname": "CommitmentsAndContingenciesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_CommonStockMember": {
     "auth_ref": [
      "r160",
      "r161",
      "r637"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Stock that is subordinate to all other stock of the issuer.",
        "label": "Common Stock [Member]",
        "terseLabel": "Common Stock"
       }
      }
     },
     "localname": "CommonStockMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CommonStockNoParValue": {
     "auth_ref": [
      "r41"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Face amount per share of no-par value common stock.",
        "label": "Common Stock, No Par Value",
        "terseLabel": "Common stock, without par value"
       }
      }
     },
     "localname": "CommonStockNoParValue",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "perShareItemType"
    },
    "us-gaap_CommonStockSharesAuthorized": {
     "auth_ref": [
      "r41"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The maximum number of common shares permitted to be issued by an entity's charter and bylaws.",
        "label": "Common Stock, Shares Authorized",
        "terseLabel": "Common stock, shares authorized"
       }
      }
     },
     "localname": "CommonStockSharesAuthorized",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesIssued": {
     "auth_ref": [
      "r41"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.",
        "label": "Common Stock, Shares, Issued",
        "terseLabel": "Common stock, shares issued"
       }
      }
     },
     "localname": "CommonStockSharesIssued",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockSharesOutstanding": {
     "auth_ref": [
      "r41",
      "r384"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.",
        "label": "Common Stock, Shares, Outstanding",
        "terseLabel": "Common stock, shares outstanding"
       }
      }
     },
     "localname": "CommonStockSharesOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_CommonStockValue": {
     "auth_ref": [
      "r41",
      "r693"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 1.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.",
        "label": "Common Stock, Value, Issued",
        "terseLabel": "Common stock, without par value, 235,000,000 shares authorized, 224,203,112 shares issued and outstanding at December\u00a031, 2021 and 2020"
       }
      }
     },
     "localname": "CommonStockValue",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CompensationAndRetirementDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Retirement Benefits [Abstract]",
        "terseLabel": "Retirement Benefits [Abstract]"
       }
      }
     },
     "localname": "CompensationAndRetirementDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_ComprehensiveIncomeNetOfTax": {
     "auth_ref": [
      "r89",
      "r91",
      "r92",
      "r103",
      "r750",
      "r771"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.",
        "label": "Comprehensive Income (Loss), Net of Tax, Attributable to Parent",
        "terseLabel": "TOTAL COMPREHENSIVE INCOME",
        "totalLabel": "TOTAL COMPREHENSIVE INCOME"
       }
      }
     },
     "localname": "ComprehensiveIncomeNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ComprehensiveIncomePolicyPolicyTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for comprehensive income.",
        "label": "Comprehensive Income, Policy [Policy Text Block]",
        "terseLabel": "Comprehensive Income (Loss)"
       }
      }
     },
     "localname": "ComprehensiveIncomePolicyPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConcentrationRiskBenchmarkDomain": {
     "auth_ref": [
      "r203",
      "r204",
      "r238",
      "r649",
      "r650",
      "r797"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The denominator in a calculation of a disclosed concentration risk percentage.",
        "label": "Concentration Risk Benchmark [Domain]",
        "terseLabel": "Concentration Risk Benchmark [Domain]"
       }
      }
     },
     "localname": "ConcentrationRiskBenchmarkDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ConcentrationRiskByBenchmarkAxis": {
     "auth_ref": [
      "r203",
      "r204",
      "r238",
      "r649",
      "r650",
      "r790",
      "r797"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by benchmark of concentration risk.",
        "label": "Concentration Risk Benchmark [Axis]",
        "terseLabel": "Concentration Risk Benchmark [Axis]"
       }
      }
     },
     "localname": "ConcentrationRiskByBenchmarkAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ConcentrationRiskByTypeAxis": {
     "auth_ref": [
      "r203",
      "r204",
      "r238",
      "r649",
      "r650",
      "r790",
      "r797"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of concentration risk, for example, but not limited to, asset, liability, net assets, geographic, customer, employees, supplier, lender.",
        "label": "Concentration Risk Type [Axis]",
        "terseLabel": "Concentration Risk by Type [Axis]"
       }
      }
     },
     "localname": "ConcentrationRiskByTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ConcentrationRiskPercentage1": {
     "auth_ref": [
      "r203",
      "r204",
      "r238",
      "r649",
      "r650"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the \"benchmark\" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.",
        "label": "Concentration Risk, Percentage",
        "terseLabel": "Concentration percentage"
       }
      }
     },
     "localname": "ConcentrationRiskPercentage1",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_ConcentrationRiskTypeDomain": {
     "auth_ref": [
      "r203",
      "r204",
      "r238",
      "r649",
      "r650",
      "r797"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "For an entity that discloses a concentration risk as a percentage of some financial balance or benchmark, identifies the type (for example, asset, liability, net assets, geographic, customer, employees, supplier, lender) of the concentration.",
        "label": "Concentration Risk Type [Domain]",
        "terseLabel": "Concentration Risk Type [Domain]"
       }
      }
     },
     "localname": "ConcentrationRiskTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock": {
     "auth_ref": [
      "r6",
      "r157",
      "r597"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for condensed financial information, including the financial position, cash flows, and the results of operations of the registrant (parent company) as of the same dates or for the same periods for which audited consolidated financial statements are being presented. Alternatively, the details of this disclosure can be reported by the specific parent company taxonomy elements, indicating the appropriate date and period contexts in an instance document.",
        "label": "Condensed Financial Information of Parent Company Only Disclosure [Text Block]",
        "terseLabel": "Condensed Financial Information of Parent Company Only Disclosure"
       }
      }
     },
     "localname": "CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANT"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ConsolidationPolicyTextBlock": {
     "auth_ref": [
      "r143",
      "r601"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy regarding (1) the principles it follows in consolidating or combining the separate financial statements, including the principles followed in determining the inclusion or exclusion of subsidiaries or other entities in the consolidated or combined financial statements and (2) its treatment of interests (for example, common stock, a partnership interest or other means of exerting influence) in other entities, for example consolidation or use of the equity or cost methods of accounting.  The accounting policy may also address the accounting treatment for intercompany accounts and transactions, noncontrolling interest, and the income statement treatment in consolidation for issuances of stock by a subsidiary.",
        "label": "Consolidation, Policy [Policy Text Block]",
        "terseLabel": "Principles of Consolidation"
       }
      }
     },
     "localname": "ConsolidationPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ContractWithCustomerLiabilityCurrent": {
     "auth_ref": [
      "r387",
      "r388",
      "r399"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 6.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.",
        "label": "Contract with Customer, Liability, Current",
        "verboseLabel": "Refundable deposits and advances for construction"
       }
      }
     },
     "localname": "ContractWithCustomerLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ContractWithCustomerLiabilityNoncurrent": {
     "auth_ref": [
      "r387",
      "r388",
      "r399"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 7.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent.",
        "label": "Contract with Customer, Liability, Noncurrent",
        "verboseLabel": "Refundable deposits"
       }
      }
     },
     "localname": "ContractWithCustomerLiabilityNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CorporateNonSegmentMember": {
     "auth_ref": [
      "r221",
      "r222",
      "r223",
      "r224",
      "r226",
      "r232",
      "r234"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Corporate headquarters or functional department that may not earn revenues or may earn revenues that are only incidental to the activities of the entity and is not considered an operating segment.",
        "label": "Corporate, Non-Segment [Member]",
        "terseLabel": "ITC Holdings and Other"
       }
      }
     },
     "localname": "CorporateNonSegmentMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_CostsAndExpenses": {
     "auth_ref": [
      "r105"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 2.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total costs of sales and operating expenses for the period.",
        "label": "Costs and Expenses",
        "totalLabel": "Total operating expenses"
       }
      }
     },
     "localname": "CostsAndExpenses",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CostsAndExpensesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Costs and Expenses [Abstract]",
        "terseLabel": "OPERATING EXPENSES"
       }
      }
     },
     "localname": "CostsAndExpensesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_CurrentIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r152",
      "r569",
      "r582",
      "r584"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.",
        "label": "Current Income Tax Expense (Benefit)",
        "terseLabel": "Current income tax (benefit) expense"
       }
      }
     },
     "localname": "CurrentIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_CustomerConcentrationRiskMember": {
     "auth_ref": [
      "r202",
      "r238"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reflects the percentage that revenues in the period from one or more significant customers is to net revenues, as defined by the entity, such as total net revenues, product line revenues, segment revenues. The risk is the materially adverse effects of loss of a significant customer.",
        "label": "Customer Concentration Risk [Member]",
        "terseLabel": "Customer Concentration Risk"
       }
      }
     },
     "localname": "CustomerConcentrationRiskMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtCurrent": {
     "auth_ref": [
      "r61"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.",
        "label": "Debt, Current",
        "terseLabel": "Debt maturing within one year"
       }
      }
     },
     "localname": "DebtCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Debt Disclosure [Abstract]",
        "terseLabel": "Debt Disclosure [Abstract]"
       }
      }
     },
     "localname": "DebtDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtDisclosureTextBlock": {
     "auth_ref": [
      "r147",
      "r338",
      "r339",
      "r340",
      "r341",
      "r342",
      "r343",
      "r344",
      "r349",
      "r356",
      "r357",
      "r359",
      "r368"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.",
        "label": "Debt Disclosure [Text Block]",
        "verboseLabel": "DEBT"
       }
      }
     },
     "localname": "DebtDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBT"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DebtInstrumentAxis": {
     "auth_ref": [
      "r32",
      "r34",
      "r35",
      "r150",
      "r157",
      "r332",
      "r333",
      "r334",
      "r335",
      "r336",
      "r337",
      "r339",
      "r345",
      "r346",
      "r347",
      "r348",
      "r350",
      "r351",
      "r352",
      "r353",
      "r354",
      "r355",
      "r363",
      "r364",
      "r365",
      "r366",
      "r675",
      "r742",
      "r744",
      "r757"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of debt instrument, including, but not limited to, draws against credit facilities.",
        "label": "Debt Instrument [Axis]",
        "terseLabel": "Debt Instrument [Axis]"
       }
      }
     },
     "localname": "DebtInstrumentAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentCarryingAmount": {
     "auth_ref": [
      "r35",
      "r360",
      "r744",
      "r757"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.",
        "label": "Long-term Debt, Gross",
        "totalLabel": "Total",
        "verboseLabel": "Long-term debt"
       }
      }
     },
     "localname": "DebtInstrumentCarryingAmount",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentFaceAmount": {
     "auth_ref": [
      "r332",
      "r363",
      "r364",
      "r673",
      "r675",
      "r676"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Face (par) amount of debt instrument at time of issuance.",
        "label": "Debt Instrument, Face Amount",
        "terseLabel": "Principle amount"
       }
      }
     },
     "localname": "DebtInstrumentFaceAmount",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtInstrumentInterestRateStatedPercentage": {
     "auth_ref": [
      "r65",
      "r333"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Contractual interest rate for funds borrowed, under the debt agreement.",
        "label": "Debt Instrument, Interest Rate, Stated Percentage",
        "terseLabel": "Interest rate"
       }
      }
     },
     "localname": "DebtInstrumentInterestRateStatedPercentage",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DebtInstrumentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Debt Instrument [Line Items]",
        "terseLabel": "Debt Instrument"
       }
      }
     },
     "localname": "DebtInstrumentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DebtInstrumentNameDomain": {
     "auth_ref": [
      "r66",
      "r150",
      "r157",
      "r332",
      "r333",
      "r334",
      "r335",
      "r336",
      "r337",
      "r339",
      "r345",
      "r346",
      "r347",
      "r348",
      "r350",
      "r351",
      "r352",
      "r353",
      "r354",
      "r355",
      "r363",
      "r364",
      "r365",
      "r366",
      "r675"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities.",
        "label": "Debt Instrument, Name [Domain]",
        "terseLabel": "Debt Instrument, Name [Domain]"
       }
      }
     },
     "localname": "DebtInstrumentNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet": {
     "auth_ref": [
      "r345",
      "r361",
      "r363",
      "r364",
      "r674"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of unamortized debt discount (premium) and debt issuance costs.",
        "label": "Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net",
        "negatedTerseLabel": "Unamortized deferred financing fees and discount",
        "terseLabel": "Deferred financing fees and discount"
       }
      }
     },
     "localname": "DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtLongtermAndShorttermCombinedAmount": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Represents the aggregate of total long-term debt, including current maturities and short-term debt.",
        "label": "Debt, Long-term and Short-term, Combined Amount",
        "terseLabel": "Total debt"
       }
      }
     },
     "localname": "DebtLongtermAndShorttermCombinedAmount",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DebtWeightedAverageInterestRate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average interest rate of debt outstanding.",
        "label": "Debt, Weighted Average Interest Rate",
        "terseLabel": "Weighted average interest rate"
       }
      }
     },
     "localname": "DebtWeightedAverageInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DeferredIncomeTaxAssetsNet": {
     "auth_ref": [
      "r550",
      "r551"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_AssetsNoncurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting.",
        "label": "Deferred Income Tax Assets, Net",
        "terseLabel": "Deferred Income Tax Assets, Net"
       }
      }
     },
     "localname": "DeferredIncomeTaxAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r131",
      "r152",
      "r570",
      "r582",
      "r583",
      "r584"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.",
        "label": "Deferred Income Tax Expense (Benefit)",
        "terseLabel": "Deferred Income Tax Expense (Benefit)",
        "verboseLabel": "Deferred income tax expense"
       }
      }
     },
     "localname": "DeferredIncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredIncomeTaxLiabilities": {
     "auth_ref": [
      "r37",
      "r38",
      "r560",
      "r743",
      "r756"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences.",
        "label": "Deferred Tax Liabilities, Gross",
        "negatedTerseLabel": "Gross deferred income tax liabilities"
       }
      }
     },
     "localname": "DeferredIncomeTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsGross": {
     "auth_ref": [
      "r561"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.",
        "label": "Deferred Tax Assets, Gross",
        "terseLabel": "Gross deferred income tax assets"
       }
      }
     },
     "localname": "DeferredTaxAssetsGross",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsOperatingLossCarryforwards": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.",
        "label": "Deferred Tax Assets, Operating Loss Carryforwards",
        "terseLabel": "Federal income tax NOLs and other credits"
       }
      }
     },
     "localname": "DeferredTaxAssetsOperatingLossCarryforwards",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.",
        "label": "Deferred Tax Assets, Operating Loss Carryforwards, State and Local",
        "terseLabel": "State income tax NOLs (net of federal benefit)"
       }
      }
     },
     "localname": "DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsOther": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.",
        "label": "Deferred Tax Assets, Other",
        "terseLabel": "Deferred Tax Assets, Other"
       }
      }
     },
     "localname": "DeferredTaxAssetsOther",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsRegulatoryAssetsAndLiabilities": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences derived regulatory assets and liabilities.",
        "label": "Deferred Tax Assets, Regulatory Assets and Liabilities",
        "terseLabel": "Revenue Accruals And Deferrals Including Accrued Interest"
       }
      }
     },
     "localname": "DeferredTaxAssetsRegulatoryAssetsAndLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxAssetsValuationAllowance": {
     "auth_ref": [
      "r562"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.",
        "label": "Deferred Tax Assets, Valuation Allowance",
        "negatedTerseLabel": "Deferred Tax Assets, Valuation Allowance",
        "terseLabel": "Deferred Tax Assets, Valuation Allowance"
       }
      }
     },
     "localname": "DeferredTaxAssetsValuationAllowance",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/INCOMETAXESINCOMETAXESAdditionalInformationDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilities": {
     "auth_ref": [
      "r551",
      "r563"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.",
        "label": "Deferred Tax Liabilities, Net",
        "negatedLabel": "Net deferred tax liabilities"
       }
      }
     },
     "localname": "DeferredTaxLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill": {
     "auth_ref": [
      "r567",
      "r568",
      "r595",
      "r596"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from goodwill.",
        "label": "Deferred Tax Liabilities, Goodwill",
        "negatedTerseLabel": "Goodwill"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsGoodwill",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.",
        "label": "Deferred Tax Liabilities, Property, Plant and Equipment",
        "negatedTerseLabel": "Property, plant and equipment"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesRegulatoryAssets": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from regulatory assets.",
        "label": "Deferred Tax Liabilities, Regulatory Assets",
        "negatedTerseLabel": "Deferred tax liabilities, regulatory assets"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesRegulatoryAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from regulatory assets and liabilities.",
        "label": "Deferred Tax Liabilities, Regulatory Assets and Liabilities",
        "terseLabel": "Deferred Tax Liabilities, Regulatory Assets and Liabilities"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesRegulatoryAssetsAndLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome": {
     "auth_ref": [
      "r567",
      "r568"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 5.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of deferred tax liability attributable to taxable temporary differences from tax deferred revenue or income classified as other.",
        "label": "Deferred Tax Liabilities, Tax Deferred Income",
        "terseLabel": "Deferred Tax Liabilities, Tax Deferred Income"
       }
      }
     },
     "localname": "DeferredTaxLiabilitiesTaxDeferredIncome",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent": {
     "auth_ref": [
      "r34",
      "r415",
      "r416",
      "r438"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as current. Excludes other postretirement benefit plan.",
        "label": "Liability, Defined Benefit Pension Plan, Current",
        "negatedTerseLabel": "Other current liabilities"
       }
      }
     },
     "localname": "DefinedBenefitPensionPlanLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation": {
     "auth_ref": [
      "r449"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.",
        "label": "Defined Benefit Plan, Accumulated Benefit Obligation",
        "negatedTerseLabel": "Accumulated benefit obligation"
       }
      }
     },
     "localname": "DefinedBenefitPlanAccumulatedBenefitObligation",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]",
        "terseLabel": "Unrecognized Amounts in Non-current Regulatory Assets:"
       }
      }
     },
     "localname": "DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets": {
     "auth_ref": [
      "r430",
      "r490"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.",
        "label": "Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)",
        "terseLabel": "Actual return on plan assets"
       }
      }
     },
     "localname": "DefinedBenefitPlanActualReturnOnPlanAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanActuarialGainLoss": {
     "auth_ref": [
      "r423"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.",
        "label": "Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)",
        "terseLabel": "Actuarial net gain (loss)"
       }
      }
     },
     "localname": "DefinedBenefitPlanActuarialGainLoss",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses": {
     "auth_ref": [
      "r417",
      "r456",
      "r484",
      "r490",
      "r491"
     ],
     "calculation": {
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.",
        "label": "Defined Benefit Plan, Amortization of Gain (Loss)",
        "negatedTerseLabel": "Amortization of unrecognized loss"
       }
      }
     },
     "localname": "DefinedBenefitPlanAmortizationOfGainsLosses",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet": {
     "auth_ref": [
      "r415",
      "r438"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.",
        "label": "Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position",
        "terseLabel": "Total"
       }
      }
     },
     "localname": "DefinedBenefitPlanAmountsRecognizedInBalanceSheet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent": {
     "auth_ref": [
      "r30",
      "r415",
      "r416",
      "r438",
      "r490",
      "r739",
      "r759"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.",
        "label": "Assets for Plan Benefits, Defined Benefit Plan",
        "terseLabel": "Other non-current assets"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plan, Assumed Health Care Cost Trend Rates [Abstract]",
        "terseLabel": "Assumed Health Care Cost Trend Rates"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumedHealthCareCostTrendRatesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate": {
     "auth_ref": [
      "r463"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.",
        "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate",
        "terseLabel": "Discount rate"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease": {
     "auth_ref": [
      "r464"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.",
        "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Rate of Compensation Increase",
        "terseLabel": "Annual rate of salary increases"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate": {
     "auth_ref": [
      "r466"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted-average interest crediting rate used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, cash balance and other defined benefit plans with promised interest crediting rate.",
        "label": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate",
        "terseLabel": "Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Weighted-Average Interest Crediting Rate"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationWeightedAverageInterestCreditingRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate": {
     "auth_ref": [
      "r463"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average rate for present value of future retirement benefits cash flows, used to determine net periodic benefit cost of defined benefit plan.",
        "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Discount Rate",
        "terseLabel": "Discount rate"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets": {
     "auth_ref": [
      "r465",
      "r489"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.",
        "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets",
        "terseLabel": "Expected long-term rate of return on plan assets"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease": {
     "auth_ref": [
      "r464"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average rate of compensation increase used to determine net periodic benefit cost of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.",
        "label": "Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Rate of Compensation Increase",
        "terseLabel": "Annual rate of salary increases"
       }
      }
     },
     "localname": "DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanBenefitObligation": {
     "auth_ref": [
      "r418"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.",
        "label": "Defined Benefit Plan, Benefit Obligation",
        "negatedPeriodEndLabel": "Ending obligation",
        "negatedPeriodStartLabel": "Beginning obligation"
       }
      }
     },
     "localname": "DefinedBenefitPlanBenefitObligation",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid": {
     "auth_ref": [
      "r425",
      "r494"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.",
        "label": "Defined Benefit Plan, Benefit Obligation, Benefits Paid",
        "terseLabel": "Benefits paid"
       }
      }
     },
     "localname": "DefinedBenefitPlanBenefitObligationBenefitsPaid",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanBenefitObligationPaymentForSettlement": {
     "auth_ref": [
      "r420"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of payment, which decreases benefit obligation of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Excludes decreases to benefit obligation for remeasurement due to settlement.",
        "label": "Defined Benefit Plan, Benefit Obligation, Payment for Settlement",
        "terseLabel": "Defined Benefit Plan, Benefit Obligation, Payment for Settlement"
       }
      }
     },
     "localname": "DefinedBenefitPlanBenefitObligationPaymentForSettlement",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis": {
     "auth_ref": [
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r468",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by defined benefit plan asset investment.",
        "label": "Defined Benefit Plan, Plan Assets, Category [Axis]",
        "terseLabel": "Defined Benefit Plan, Asset Categories"
       }
      }
     },
     "localname": "DefinedBenefitPlanByPlanAssetCategoriesAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]",
        "terseLabel": "Change in Benefit Obligation:"
       }
      }
     },
     "localname": "DefinedBenefitPlanChangeInBenefitObligationRollForward",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.",
        "label": "Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]",
        "terseLabel": "Change in Plans' Assets:"
       }
      }
     },
     "localname": "DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanContributionsByEmployer": {
     "auth_ref": [
      "r432",
      "r441",
      "r443",
      "r488",
      "r490",
      "r491"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contribution received by defined benefit plan from employer which increases plan assets.",
        "label": "Defined Benefit Plan, Plan Assets, Contributions by Employer",
        "terseLabel": "Employer contributions"
       }
      }
     },
     "localname": "DefinedBenefitPlanContributionsByEmployer",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanDisclosureLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Defined Benefit Plan Disclosure [Line Items]",
        "terseLabel": "Defined Benefit Plan Disclosure"
       }
      }
     },
     "localname": "DefinedBenefitPlanDisclosureLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter": {
     "auth_ref": [
      "r450"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of benefit for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following current fiscal year.",
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years",
        "terseLabel": "2023 through 2027"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths": {
     "auth_ref": [
      "r450"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.",
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year One",
        "terseLabel": "2018"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive": {
     "auth_ref": [
      "r450"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of benefit for defined benefit plan expected to be paid in fifth fiscal year following current fiscal year.",
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Five",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour": {
     "auth_ref": [
      "r450"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of benefit for defined benefit plan expected to be paid in fourth fiscal year following current fiscal year.",
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Four",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree": {
     "auth_ref": [
      "r450"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of benefit for defined benefit plan expected to be paid in third fiscal year following current fiscal year.",
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Three",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo": {
     "auth_ref": [
      "r450"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of benefit for defined benefit plan expected to be paid in second fiscal year following current fiscal year.",
        "label": "Defined Benefit Plan, Expected Future Benefit Payment, Year Two",
        "terseLabel": "2019"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear": {
     "auth_ref": [
      "r451",
      "r491"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.",
        "label": "Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year",
        "terseLabel": "Expected Future Employer Contributions, Next Fiscal Year"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets": {
     "auth_ref": [
      "r417",
      "r455",
      "r483",
      "r490",
      "r491"
     ],
     "calculation": {
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.",
        "label": "Defined Benefit Plan, Expected Return (Loss) on Plan Assets",
        "negatedTerseLabel": "Expected return on plan assets"
       }
      }
     },
     "localname": "DefinedBenefitPlanExpectedReturnOnPlanAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanFairValueOfPlanAssets": {
     "auth_ref": [
      "r429",
      "r441",
      "r443",
      "r444",
      "r490"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.",
        "label": "Defined Benefit Plan, Plan Assets, Amount",
        "periodEndLabel": "Ending plan assets at fair value",
        "periodStartLabel": "Beginning plan assets at fair value",
        "terseLabel": "Fair value amount"
       }
      }
     },
     "localname": "DefinedBenefitPlanFairValueOfPlanAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanFundedStatusOfPlan": {
     "auth_ref": [
      "r415",
      "r438",
      "r490"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.",
        "label": "Defined Benefit Plan, Funded (Unfunded) Status of Plan",
        "terseLabel": "Funded status, underfunded"
       }
      }
     },
     "localname": "DefinedBenefitPlanFundedStatusOfPlan",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear": {
     "auth_ref": [
      "r467"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.",
        "label": "Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year",
        "terseLabel": "Health care cost trend rate"
       }
      }
     },
     "localname": "DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanInterestCost": {
     "auth_ref": [
      "r417",
      "r421",
      "r454",
      "r482",
      "r490",
      "r491"
     ],
     "calculation": {
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cost recognized for passage of time related to defined benefit plan.",
        "label": "Defined Benefit Plan, Interest Cost",
        "negatedTerseLabel": "Interest cost",
        "terseLabel": "Interest cost"
       }
      }
     },
     "localname": "DefinedBenefitPlanInterestCost",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost": {
     "auth_ref": [
      "r452",
      "r480",
      "r490",
      "r491"
     ],
     "calculation": {
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of net periodic benefit cost (credit) for defined benefit plan.",
        "label": "Defined Benefit Plan, Net Periodic Benefit Cost (Credit)",
        "totalLabel": "Net cost"
       }
      }
     },
     "localname": "DefinedBenefitPlanNetPeriodicBenefitCost",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation": {
     "auth_ref": [
      "r476",
      "r490"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of projected benefit obligation for defined benefit pension plan with projected benefit obligation in excess of plan assets.",
        "label": "Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation",
        "negatedTerseLabel": "Defined Benefit Plan, Pension Plan with Projected Benefit Obligation in Excess of Plan Assets, Projected Benefit Obligation"
       }
      }
     },
     "localname": "DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation": {
     "auth_ref": [
      "r476",
      "r477",
      "r490"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of accumulated benefit obligation for defined benefit plan with accumulated benefit obligation in excess of plan assets.",
        "label": "Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation",
        "negatedTerseLabel": "Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets, Accumulated Benefit Obligation"
       }
      }
     },
     "localname": "DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanPlanAmendments": {
     "auth_ref": [
      "r426"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.",
        "label": "Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment",
        "negatedTerseLabel": "Defined Benefit Plan, Plan Amendment [Abstract]"
       }
      }
     },
     "localname": "DefinedBenefitPlanPlanAmendments",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid": {
     "auth_ref": [
      "r434",
      "r494"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.",
        "label": "Defined Benefit Plan, Plan Assets, Benefits Paid",
        "negatedTerseLabel": "Benefits Paid"
       }
      }
     },
     "localname": "DefinedBenefitPlanPlanAssetsBenefitsPaid",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage": {
     "auth_ref": [
      "r440",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.",
        "label": "Defined Benefit Plan, Plan Assets, Target Allocation, Percentage",
        "terseLabel": "Defined Benefit Plan, Plan Assets, Target Allocation, Percentage"
       }
      }
     },
     "localname": "DefinedBenefitPlanPlanAssetsTargetAllocationPercentage",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]",
        "terseLabel": "Funded Status:"
       }
      }
     },
     "localname": "DefinedBenefitPlanPlansWithBenefitObligationsInExcessOfPlanAssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanServiceCost": {
     "auth_ref": [
      "r419",
      "r453",
      "r481",
      "r490",
      "r491"
     ],
     "calculation": {
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.",
        "label": "Defined Benefit Plan, Service Cost",
        "negatedTerseLabel": "Service cost",
        "terseLabel": "Service cost"
       }
      }
     },
     "localname": "DefinedBenefitPlanServiceCost",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1": {
     "auth_ref": [
      "r467"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ultimate trend rate for health care cost for defined benefit postretirement plan.",
        "label": "Defined Benefit Plan, Ultimate Health Care Cost Trend Rate",
        "terseLabel": "Ultimate health care cost trend rate"
       }
      }
     },
     "localname": "DefinedBenefitPlanUltimateHealthCareCostTrendRate1",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations": {
     "auth_ref": [
      "r440"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of actual investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.",
        "label": "Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage",
        "terseLabel": "Defined Benefit Plan, Plan Assets, Actual Allocation, Percentage"
       }
      }
     },
     "localname": "DefinedBenefitPlanWeightedAverageAssetAllocations",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]",
        "terseLabel": "Benefit Obligation Assumptions"
       }
      }
     },
     "localname": "DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]",
        "terseLabel": "Benefit Cost Assumptions"
       }
      }
     },
     "localname": "DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingNetPeriodicBenefitCostAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate": {
     "auth_ref": [
      "r467"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Year ultimate health care cost trend rate is expected to be reached, in YYYY format.",
        "label": "Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate",
        "terseLabel": "Year that the ultimate trend rate is reached"
       }
      }
     },
     "localname": "DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "gYearListItemType"
    },
    "us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]",
        "terseLabel": "Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block"
       }
      }
     },
     "localname": "DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DefinedContributionPlanCostRecognized": {
     "auth_ref": [
      "r495"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cost for defined contribution plan.",
        "label": "Defined Contribution Plan, Cost",
        "terseLabel": "Defined Contribution Plan, Cost"
       }
      }
     },
     "localname": "DefinedContributionPlanCostRecognized",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepreciationAndAmortization": {
     "auth_ref": [
      "r131",
      "r296"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.",
        "label": "Depreciation, Depletion and Amortization, Nonproduction",
        "terseLabel": "Depreciation and amortization",
        "verboseLabel": "Depreciation and amortization expense"
       }
      }
     },
     "localname": "DepreciationAndAmortization",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DepreciationDepletionAndAmortization": {
     "auth_ref": [
      "r131",
      "r214"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.",
        "label": "Depreciation, Depletion and Amortization",
        "terseLabel": "Depreciation and amortization expense"
       }
      }
     },
     "localname": "DepreciationDepletionAndAmortization",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeContractTypeDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financial instrument or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.",
        "label": "Derivative Contract [Domain]",
        "terseLabel": "Derivative Contract [Domain]"
       }
      }
     },
     "localname": "DerivativeContractTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_DerivativeFairValueOfDerivativeAsset": {
     "auth_ref": [
      "r77",
      "r78",
      "r79",
      "r614",
      "r709"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.",
        "label": "Derivative Asset, Fair Value, Gross Asset",
        "terseLabel": "Derivative Asset, Fair Value, Gross Liability"
       }
      }
     },
     "localname": "DerivativeFairValueOfDerivativeAsset",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeFixedInterestRate": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Fixed interest rate related to the interest rate derivative.",
        "label": "Derivative, Fixed Interest Rate",
        "terseLabel": "Derivative, Fixed Interest Rate"
       }
      }
     },
     "localname": "DerivativeFixedInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_DerivativeInstrumentRiskAxis": {
     "auth_ref": [
      "r78",
      "r613",
      "r615",
      "r618",
      "r621"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of derivative contract.",
        "label": "Derivative Instrument [Axis]",
        "terseLabel": "Derivative Instrument [Axis]"
       }
      }
     },
     "localname": "DerivativeInstrumentRiskAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Derivative [Line Items]",
        "terseLabel": "Interest Rate Swaps"
       }
      }
     },
     "localname": "DerivativeLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeNotionalAmount": {
     "auth_ref": [
      "r607",
      "r609"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Nominal or face amount used to calculate payment on derivative.",
        "label": "Derivative, Notional Amount",
        "terseLabel": "Derivative, Notional Amount"
       }
      }
     },
     "localname": "DerivativeNotionalAmount",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_DerivativeTable": {
     "auth_ref": [
      "r606",
      "r608",
      "r609",
      "r610",
      "r611",
      "r617",
      "r618",
      "r622",
      "r624",
      "r626",
      "r627"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule that describes and identifies a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item.",
        "label": "Derivative [Table]",
        "terseLabel": "Derivative [Table]"
       }
      }
     },
     "localname": "DerivativeTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DerivativeTermOfContract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Derivative, Term of Contract",
        "terseLabel": "Derivative, Term of Contract"
       }
      }
     },
     "localname": "DerivativeTermOfContract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_DerivativesPolicyTextBlock": {
     "auth_ref": [
      "r156",
      "r606",
      "r608",
      "r610",
      "r611",
      "r623"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for its derivative instruments and hedging activities.",
        "label": "Derivatives, Policy [Policy Text Block]",
        "terseLabel": "Financial Instruments"
       }
      }
     },
     "localname": "DerivativesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisaggregationOfRevenueLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Disaggregation of Revenue [Line Items]",
        "terseLabel": "Disaggregation of Revenue [Line Items]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REVENUEDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisaggregationOfRevenueTable": {
     "auth_ref": [
      "r398",
      "r401",
      "r402",
      "r403",
      "r404",
      "r405",
      "r406",
      "r407"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.",
        "label": "Disaggregation of Revenue [Table]",
        "terseLabel": "Disaggregation of Revenue [Table]"
       }
      }
     },
     "localname": "DisaggregationOfRevenueTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REVENUEDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock": {
     "auth_ref": [
      "r547"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for share-based payment arrangement.",
        "label": "Share-based Payment Arrangement [Text Block]",
        "terseLabel": "SHARE-BASED COMPENSATION ADN EMPLOYEE SHARE PURCHASE PLAN"
       }
      }
     },
     "localname": "DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLAN"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Share-based Payment Arrangement [Abstract]",
        "terseLabel": "Share-based Payment Arrangement [Abstract]"
       }
      }
     },
     "localname": "DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock": {
     "auth_ref": [
      "r520",
      "r533"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of share-based payment arrangement.",
        "label": "Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]",
        "terseLabel": "Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]"
       }
      }
     },
     "localname": "DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateContinuingOperations": {
     "auth_ref": [
      "r553"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "label": "Effective Income Tax Rate Reconciliation, Percent",
        "terseLabel": "Effective Income Tax Rate Reconciliation, Percent"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateContinuingOperations",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/INCOMETAXESINCOMETAXESAdditionalInformationDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r153",
      "r553",
      "r585"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Percentage of domestic federal statutory tax rate applicable to pretax income (loss).",
        "label": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent",
        "terseLabel": "Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount": {
     "auth_ref": [
      "r553"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of reported income tax expense (benefit) in excess of (less than) expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operations, attributable to Tax Cuts and Jobs Act.",
        "label": "Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount",
        "terseLabel": "Effective Income Tax Rate Reconciliation, Tax Cuts and Jobs Act, Amount"
       }
      }
     },
     "localname": "EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Amount",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeBenefitsAndShareBasedCompensation": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of expense for employee benefit and equity-based compensation.",
        "label": "Employee Benefits and Share-based Compensation",
        "terseLabel": "Employee Benefits and Share-based Compensation"
       }
      }
     },
     "localname": "EmployeeBenefitsAndShareBasedCompensation",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeRelatedLiabilitiesCurrent": {
     "auth_ref": [
      "r63"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Employee-related Liabilities, Current",
        "terseLabel": "Accrued compensation",
        "verboseLabel": "Accrued compensation"
       }
      }
     },
     "localname": "EmployeeRelatedLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount": {
     "auth_ref": [
      "r531"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cost capitalized for award under share-based payment arrangement.",
        "label": "Share-based Payment Arrangement, Amount Capitalized",
        "terseLabel": "Amounts capitalized to property, plant and equipment"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]",
        "terseLabel": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1": {
     "auth_ref": [
      "r532"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.",
        "label": "Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition",
        "terseLabel": "Weighted average period for recognition"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions": {
     "auth_ref": [
      "r532"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.",
        "label": "Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount",
        "terseLabel": "Total unrecognized compensation cost"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense": {
     "auth_ref": [
      "r530"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of tax benefit for recognition of expense of award under share-based payment arrangement.",
        "label": "Share-based Payment Arrangement, Expense, Tax Benefit",
        "terseLabel": "Total tax benefit recognized in the consolidated statements of operations"
       }
      }
     },
     "localname": "EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPCompensationExpense": {
     "auth_ref": [
      "r545"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of plan compensation cost recognized during the period.",
        "label": "Employee Stock Ownership Plan (ESOP), Compensation Expense",
        "terseLabel": "Employee Stock Ownership Plan (ESOP), Compensation Expense"
       }
      }
     },
     "localname": "EmployeeStockOwnershipPlanESOPCompensationExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis": {
     "auth_ref": [
      "r546"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by name of employee stock ownership plan.",
        "label": "Employee Stock Ownership Plan (ESOP) Name [Axis]",
        "terseLabel": "Employee Stock Ownership Plan (ESOP) Name [Axis]"
       }
      }
     },
     "localname": "EmployeeStockOwnershipPlanESOPDisclosuresByPlanAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_EmployeeStockOwnershipPlanESOPPlanDomain": {
     "auth_ref": [
      "r544"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Entities identify multiple employee stock ownership plans by unique name.",
        "label": "Employee Stock Ownership Plan (ESOP), Plan [Domain]",
        "terseLabel": "Employee Stock Ownership Plan (ESOP), Plan [Domain]"
       }
      }
     },
     "localname": "EmployeeStockOwnershipPlanESOPPlanDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Equity [Abstract]",
        "terseLabel": "Equity [Abstract]"
       }
      }
     },
     "localname": "EquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_EquityComponentDomain": {
     "auth_ref": [
      "r2",
      "r94",
      "r95",
      "r96",
      "r160",
      "r161",
      "r162",
      "r167",
      "r178",
      "r181",
      "r194",
      "r263",
      "r384",
      "r385",
      "r538",
      "r539",
      "r540",
      "r575",
      "r576",
      "r637",
      "r664",
      "r665",
      "r666",
      "r667",
      "r668",
      "r670",
      "r780",
      "r781",
      "r782",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Components of equity are the parts of the total Equity balance including that which is allocated to common, preferred, treasury stock, retained earnings, etc.",
        "label": "Equity Component [Domain]",
        "terseLabel": "Equity Component [Domain]"
       }
      }
     },
     "localname": "EquityComponentDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_EquityMethodInvestments": {
     "auth_ref": [
      "r52",
      "r218",
      "r258"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_AssetsNoncurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.",
        "label": "Equity Method Investments",
        "terseLabel": "Investment in subsidiaries"
       }
      }
     },
     "localname": "EquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquitySecuritiesFvNi": {
     "auth_ref": [
      "r648"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.",
        "label": "Equity Securities, FV-NI, Current",
        "terseLabel": "Equity Securities, FV-NI"
       }
      }
     },
     "localname": "EquitySecuritiesFvNi",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_EquitySecuritiesMember": {
     "auth_ref": [
      "r24",
      "r33",
      "r254",
      "r758",
      "r793",
      "r794",
      "r795"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Ownership interest or right to acquire or dispose of ownership interest in corporations and other legal entities for which ownership interest is represented by shares of common or preferred stock, convertible securities, stock rights, or stock warrants.",
        "label": "Equity Securities [Member]",
        "terseLabel": "Equity Securities [Member]"
       }
      }
     },
     "localname": "EquitySecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ExtinguishmentOfDebtAmount": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Gross amount of debt extinguished.",
        "label": "Extinguishment of Debt, Amount",
        "terseLabel": "Extinguishment of Debt, Amount"
       }
      }
     },
     "localname": "ExtinguishmentOfDebtAmount",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ExtinguishmentOfDebtAxis": {
     "auth_ref": [
      "r367"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information pertaining to the debt extinguished including the amount of gain (loss), the income tax effect on the gain (loss), and the amount of gain (loss), net or the related income tax, by debt instrument.",
        "label": "Extinguishment of Debt [Axis]",
        "terseLabel": "Extinguishment of Debt [Axis]"
       }
      }
     },
     "localname": "ExtinguishmentOfDebtAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ExtinguishmentOfDebtTypeDomain": {
     "auth_ref": [
      "r367"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of debt extinguished.",
        "label": "Extinguishment of Debt, Type [Domain]",
        "terseLabel": "Extinguishment of Debt, Type [Domain]"
       }
      }
     },
     "localname": "ExtinguishmentOfDebtTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]",
        "terseLabel": "Fair Value, Assets and Liabilities Measured on Recurring Basis"
       }
      }
     },
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable": {
     "auth_ref": [
      "r640",
      "r641",
      "r642",
      "r646"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about asset and liability measured at fair value on recurring and nonrecurring basis.",
        "label": "Fair Value, Recurring and Nonrecurring [Table]",
        "terseLabel": "Fair Value, Assets and Liabilities Measured on Recurring Basis [Table]"
       }
      }
     },
     "localname": "FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueByFairValueHierarchyLevelAxis": {
     "auth_ref": [
      "r347",
      "r363",
      "r364",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r490",
      "r641",
      "r699",
      "r700",
      "r701"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by level within fair value hierarchy and fair value measured at net asset value per share as practical expedient.",
        "label": "Fair Value Hierarchy and NAV [Axis]",
        "terseLabel": "Fair Value Hierarchy and NAV [Axis]"
       }
      }
     },
     "localname": "FairValueByFairValueHierarchyLevelAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueByMeasurementFrequencyAxis": {
     "auth_ref": [
      "r640",
      "r641",
      "r643",
      "r644",
      "r647"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by measurement frequency.",
        "label": "Measurement Frequency [Axis]",
        "terseLabel": "Measurement Frequency [Axis]",
        "verboseLabel": "Measurement Frequency [Axis]"
       }
      }
     },
     "localname": "FairValueByMeasurementFrequencyAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueDisclosuresAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Fair Value Disclosures [Abstract]",
        "terseLabel": "Fair Value Disclosures [Abstract]"
       }
      }
     },
     "localname": "FairValueDisclosuresAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FairValueDisclosuresTextBlock": {
     "auth_ref": [
      "r645"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.",
        "label": "Fair Value Disclosures [Text Block]",
        "terseLabel": "FAIR VALUE MEASUREMENTS"
       }
      }
     },
     "localname": "FairValueDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTS"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_FairValueInputsLevel1Member": {
     "auth_ref": [
      "r347",
      "r441",
      "r443",
      "r448",
      "r490",
      "r641",
      "r699"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Quoted prices in active markets for identical assets or liabilities that the reporting entity can access at the measurement date.",
        "label": "Fair Value, Inputs, Level 1 [Member]",
        "terseLabel": "Fair Value, Inputs, Level 1"
       }
      }
     },
     "localname": "FairValueInputsLevel1Member",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueInputsLevel2Member": {
     "auth_ref": [
      "r347",
      "r363",
      "r364",
      "r441",
      "r443",
      "r448",
      "r490",
      "r641",
      "r700"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Inputs other than quoted prices included within level 1 that are observable for an asset or liability, either directly or indirectly, including, but not limited to, quoted prices for similar assets or liabilities in active markets, or quoted prices for identical or similar assets or liabilities in inactive markets.",
        "label": "Fair Value, Inputs, Level 2 [Member]",
        "terseLabel": "Fair Value, Inputs, Level 2 [Member]",
        "verboseLabel": "Fair Value, Inputs, Level 2"
       }
      }
     },
     "localname": "FairValueInputsLevel2Member",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueMeasurementFrequencyDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Measurement frequency.",
        "label": "Measurement Frequency [Domain]",
        "terseLabel": "Measurement Frequency [Domain]"
       }
      }
     },
     "localname": "FairValueMeasurementFrequencyDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueMeasurementsFairValueHierarchyDomain": {
     "auth_ref": [
      "r347",
      "r363",
      "r364",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r490",
      "r699",
      "r700",
      "r701"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Categories used to prioritize the inputs to valuation techniques to measure fair value.",
        "label": "Fair Value Hierarchy and NAV [Domain]",
        "terseLabel": "Fair Value, Measurements, Fair Value Hierarchy [Domain]",
        "verboseLabel": "Fair Value Hierarchy and NAV [Domain]"
       }
      }
     },
     "localname": "FairValueMeasurementsFairValueHierarchyDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FairValueMeasurementsRecurringMember": {
     "auth_ref": [
      "r645",
      "r647"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Frequent fair value measurement. Includes, but is not limited to, fair value adjustment for impairment of asset, liability or equity, frequently measured at fair value.",
        "label": "Fair Value, Recurring [Member]",
        "terseLabel": "Fair Value, Recurring [Member]",
        "verboseLabel": "Fair Value, Recurring [Member]"
       }
      }
     },
     "localname": "FairValueMeasurementsRecurringMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_FinancialInstrumentAxis": {
     "auth_ref": [
      "r252",
      "r253",
      "r255",
      "r256",
      "r257",
      "r268",
      "r269",
      "r270",
      "r271",
      "r272",
      "r273",
      "r274",
      "r275",
      "r276",
      "r358",
      "r382",
      "r627",
      "r696",
      "r697",
      "r698",
      "r699",
      "r700",
      "r701",
      "r702",
      "r703",
      "r704",
      "r705",
      "r706",
      "r707",
      "r708",
      "r710",
      "r711",
      "r712",
      "r713",
      "r714",
      "r715",
      "r716",
      "r717",
      "r718",
      "r719",
      "r720",
      "r721",
      "r722",
      "r723",
      "r724",
      "r725",
      "r726",
      "r822",
      "r823",
      "r824",
      "r825",
      "r826",
      "r827",
      "r828"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of financial instrument.",
        "label": "Financial Instrument [Axis]",
        "terseLabel": "Financial Instrument [Axis]"
       }
      }
     },
     "localname": "FinancialInstrumentAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetUsefulLife": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Finite-Lived Intangible Asset, Useful Life",
        "terseLabel": "Intangible asset, useful life"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization": {
     "auth_ref": [
      "r291"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Finite-Lived Intangible Assets, Accumulated Amortization",
        "terseLabel": "Intangible assets, accumulated amortization",
        "verboseLabel": "Accumulated amortization"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAccumulatedAmortization",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, after Year Five",
        "terseLabel": "2024 and thereafter"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths": {
     "auth_ref": [
      "r293"
     ],
     "calculation": {
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year One",
        "terseLabel": "2019"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive": {
     "auth_ref": [
      "r293"
     ],
     "calculation": {
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Five",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFive",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour": {
     "auth_ref": [
      "r293"
     ],
     "calculation": {
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Four",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearFour",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree": {
     "auth_ref": [
      "r293"
     ],
     "calculation": {
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Three",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearThree",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo": {
     "auth_ref": [
      "r293"
     ],
     "calculation": {
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_FiniteLivedIntangibleAssetsNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Finite-Lived Intangible Asset, Expected Amortization, Year Two",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]",
        "terseLabel": "Future Amortization Expense"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_FiniteLivedIntangibleAssetsNet": {
     "auth_ref": [
      "r291",
      "r730"
     ],
     "calculation": {
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.",
        "label": "Finite-Lived Intangible Assets, Net",
        "terseLabel": "Intangible assets",
        "totalLabel": "Total"
       }
      }
     },
     "localname": "FiniteLivedIntangibleAssetsNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSFutureAmortizationExpenseDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_FixedIncomeSecuritiesMember": {
     "auth_ref": [
      "r441",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Investment that provides a return in the form of fixed periodic payments and eventual return of principal at maturity.",
        "label": "Fixed Income Securities [Member]",
        "terseLabel": "Mutual Funds - fixed income securities"
       }
      }
     },
     "localname": "FixedIncomeSecuritiesMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_GeneralAndAdministrativeExpense": {
     "auth_ref": [
      "r110"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 2.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.",
        "label": "General and Administrative Expense",
        "negatedTerseLabel": "General and administrative expense",
        "terseLabel": "General and administrative"
       }
      }
     },
     "localname": "GeneralAndAdministrativeExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GeneralAndAdministrativeExpenseMember": {
     "auth_ref": [
      "r104"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Primary financial statement caption encompassing general and administrative expense.",
        "label": "General and Administrative Expense [Member]",
        "terseLabel": "General and administrative expenses"
       }
      }
     },
     "localname": "GeneralAndAdministrativeExpenseMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_Goodwill": {
     "auth_ref": [
      "r280",
      "r282",
      "r693",
      "r738"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 2.0,
       "parentTag": "us-gaap_OtherAssets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill",
        "terseLabel": "Goodwill"
       }
      }
     },
     "localname": "Goodwill",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Goodwill and Intangible Assets Disclosure [Abstract]",
        "terseLabel": "Goodwill and Intangible Assets"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock": {
     "auth_ref": [
      "r294"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for goodwill and intangible assets.",
        "label": "Goodwill and Intangible Assets Disclosure [Text Block]",
        "terseLabel": "GOODWILL AND INTANGIBLE ASSETS"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETS"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock": {
     "auth_ref": [
      "r284",
      "r288"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets.",
        "label": "Goodwill and Intangible Assets, Policy [Policy Text Block]",
        "terseLabel": "Goodwill"
       }
      }
     },
     "localname": "GoodwillAndIntangibleAssetsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_GoodwillImpairmentLoss": {
     "auth_ref": [
      "r131",
      "r281",
      "r283",
      "r285"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.",
        "label": "Goodwill, Impairment Loss",
        "terseLabel": "Goodwill impairment"
       }
      }
     },
     "localname": "GoodwillImpairmentLoss",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_GranteeStatusAxis": {
     "auth_ref": [
      "r516",
      "r517",
      "r528"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by status of recipient to whom award is granted.",
        "label": "Grantee Status [Axis]",
        "terseLabel": "Grantee Status [Axis]"
       }
      }
     },
     "localname": "GranteeStatusAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_GranteeStatusDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Status of recipient to whom award is granted.",
        "label": "Grantee Status [Domain]",
        "terseLabel": "Grantee Status [Domain]"
       }
      }
     },
     "localname": "GranteeStatusDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock": {
     "auth_ref": [
      "r295",
      "r301"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for recognizing and measuring the impairment of long-lived assets. An entity also may disclose its accounting policy for long-lived assets to be sold. This policy excludes goodwill and intangible assets.",
        "label": "Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]",
        "terseLabel": "Impairment of Long-Lived Assets"
       }
      }
     },
     "localname": "ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperations": {
     "auth_ref": [
      "r107",
      "r132",
      "r172",
      "r173",
      "r175",
      "r176",
      "r188",
      "r190",
      "r598"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after tax of income (loss) from continuing operations attributable to the parent.",
        "label": "Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent",
        "totalLabel": "Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperations",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments": {
     "auth_ref": [
      "r217",
      "r222",
      "r226",
      "r229",
      "r232"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 1.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperations",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.",
        "label": "Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest",
        "totalLabel": "INCOME BEFORE INCOME TAXES",
        "verboseLabel": "Income (loss) before income taxes"
       }
      }
     },
     "localname": "IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeLossFromEquityMethodInvestments": {
     "auth_ref": [
      "r100",
      "r131",
      "r215",
      "r258",
      "r747",
      "r768"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of income (loss) for proportionate share of equity method investee's income (loss).",
        "label": "Income (Loss) from Equity Method Investments",
        "terseLabel": "EQUITY IN SUBSIDIARIES\u2019 NET EARNINGS"
       }
      }
     },
     "localname": "IncomeLossFromEquityMethodInvestments",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeStatementAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Statement [Abstract]",
        "terseLabel": "Income Statement [Abstract]"
       }
      }
     },
     "localname": "IncomeStatementAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementLocationAxis": {
     "auth_ref": [
      "r300",
      "r305"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by location in the income statement.",
        "label": "Income Statement Location [Axis]",
        "terseLabel": "Income Statement Location [Axis]"
       }
      }
     },
     "localname": "IncomeStatementLocationAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeStatementLocationDomain": {
     "auth_ref": [
      "r305"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Location in the income statement.",
        "label": "Income Statement Location [Domain]",
        "terseLabel": "Income Statement Location [Domain]"
       }
      }
     },
     "localname": "IncomeStatementLocationDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxAuthorityAxis": {
     "auth_ref": [
      "r555"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by tax jurisdiction.",
        "label": "Income Tax Authority [Axis]",
        "terseLabel": "Income Tax Authority [Axis]"
       }
      }
     },
     "localname": "IncomeTaxAuthorityAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxAuthorityDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Agency, division or body classification that levies income taxes, examines tax returns for compliance, or grants exemptions from or makes other decisions pertaining to income taxes.",
        "label": "Income Tax Authority [Domain]",
        "terseLabel": "Income Tax Authority [Domain]"
       }
      }
     },
     "localname": "IncomeTaxAuthorityDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_IncomeTaxContingencyLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Income Tax Contingency [Line Items]",
        "terseLabel": "Effective Income Tax Rate Reconciliation [Line Items]"
       }
      }
     },
     "localname": "IncomeTaxContingencyLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxContingencyTable": {
     "auth_ref": [
      "r556",
      "r557",
      "r559",
      "r572"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.",
        "label": "Income Tax Contingency [Table]",
        "terseLabel": "Income Tax Contingency [Table]"
       }
      }
     },
     "localname": "IncomeTaxContingencyTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Income Tax Disclosure [Abstract]",
        "terseLabel": "Income Tax Disclosure [Abstract]"
       }
      }
     },
     "localname": "IncomeTaxDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncomeTaxDisclosureTextBlock": {
     "auth_ref": [
      "r153",
      "r554",
      "r558",
      "r565",
      "r580",
      "r586",
      "r590",
      "r591",
      "r592"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.",
        "label": "Income Tax Disclosure [Text Block]",
        "terseLabel": "INCOME TAXES"
       }
      }
     },
     "localname": "IncomeTaxDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXES"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxExpenseBenefit": {
     "auth_ref": [
      "r154",
      "r180",
      "r181",
      "r216",
      "r552",
      "r581",
      "r588",
      "r772"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 2.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_NetIncomeLoss",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.",
        "label": "Income Tax Expense (Benefit)",
        "terseLabel": "INCOME TAX PROVISION",
        "totalLabel": "Total income tax provision",
        "verboseLabel": "Total income tax provision"
       }
      }
     },
     "localname": "IncomeTaxExpenseBenefit",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxPolicyTextBlock": {
     "auth_ref": [
      "r93",
      "r548",
      "r549",
      "r558",
      "r559",
      "r564",
      "r571"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.",
        "label": "Income Tax, Policy [Policy Text Block]",
        "terseLabel": "Income Taxes"
       }
      }
     },
     "localname": "IncomeTaxPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate": {
     "auth_ref": [
      "r553"
     ],
     "calculation": {
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount",
        "terseLabel": "Income tax expense at statutory rate"
       }
      }
     },
     "localname": "IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationOtherAdjustments": {
     "auth_ref": [
      "r553"
     ],
     "calculation": {
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.",
        "label": "Effective Income Tax Rate Reconciliation, Other Adjustments, Amount",
        "terseLabel": "Effective Income Tax Rate Reconciliation, Other Adjustments, Amount",
        "verboseLabel": "Other - net"
       }
      }
     },
     "localname": "IncomeTaxReconciliationOtherAdjustments",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes": {
     "auth_ref": [
      "r553"
     ],
     "calculation": {
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeTaxExpenseBenefit",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to state and local income tax expense (benefit).",
        "label": "Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount",
        "terseLabel": "State income taxes (net of federal benefit)"
       }
      }
     },
     "localname": "IncomeTaxReconciliationStateAndLocalIncomeTaxes",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESIncomeTaxReconciliationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncomeTaxesPaid": {
     "auth_ref": [
      "r128",
      "r136"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.",
        "label": "Income Taxes Paid",
        "terseLabel": "Income Taxes Paid"
       }
      }
     },
     "localname": "IncomeTaxesPaid",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsPayable": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.",
        "label": "Increase (Decrease) in Accounts Payable",
        "terseLabel": "Accounts payable"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsPayable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsReceivable": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.",
        "label": "Increase (Decrease) in Accounts Receivable",
        "negatedLabel": "Accounts receivable"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsReceivable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccountsReceivableRelatedParties": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the amount due to the reporting entity for good and services provided to the following types of related parties: a parent company and its subsidiaries; subsidiaries of a common parent; an entity and trust for the benefit of employees, such as pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management, an entity and its principal owners, management, member of their immediate families, affiliates, or other parties with the ability to exert significant influence.",
        "label": "Increase (Decrease) in Accounts Receivable, Related Parties",
        "negatedTerseLabel": "Accounts receivable from subsidiaries"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccountsReceivableRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccruedSalaries": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 15.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the period in accrued salaries.",
        "label": "Increase (Decrease) in Accrued Salaries",
        "terseLabel": "Increase (Decrease) in Accrued Salaries"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccruedSalaries",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInAccruedTaxesPayable": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 12.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period of all taxes owed but not paid, including income, property and other taxes.",
        "label": "Increase (Decrease) in Accrued Taxes Payable",
        "terseLabel": "Accrued taxes"
       }
      }
     },
     "localname": "IncreaseDecreaseInAccruedTaxesPayable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 10.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the aggregate amount of obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits.",
        "label": "Increase (Decrease) in Employee Related Liabilities",
        "terseLabel": "Accrued compensation"
       }
      }
     },
     "localname": "IncreaseDecreaseInEmployeeRelatedLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInIncomeTaxesReceivable": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid.",
        "label": "Increase (Decrease) in Income Taxes Receivable",
        "negatedLabel": "Income tax receivable"
       }
      }
     },
     "localname": "IncreaseDecreaseInIncomeTaxesReceivable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInInterestPayableNet": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity.",
        "label": "Increase (Decrease) in Interest Payable, Net",
        "terseLabel": "Accrued interest"
       }
      }
     },
     "localname": "IncreaseDecreaseInInterestPayableNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOperatingCapitalAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Increase (Decrease) in Operating Capital [Abstract]",
        "terseLabel": "Changes in assets and liabilities, exclusive of changes shown separately:",
        "verboseLabel": "Changes in assets and liabilities, exclusive of changes shown separately:"
       }
      }
     },
     "localname": "IncreaseDecreaseInOperatingCapitalAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in noncurrent operating assets after deduction of noncurrent operating liabilities classified as other.",
        "label": "Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net",
        "negatedLabel": "Other current and non-current assets and liabilities, net"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 14.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase (decrease) in operating assets after deduction of operating liabilities classified as other.",
        "label": "Increase (Decrease) in Other Operating Assets and Liabilities, Net",
        "negatedLabel": "Other current and non-current assets and liabilities, net",
        "negatedTerseLabel": "Increase (Decrease) in Other Operating Assets and Liabilities, Net"
       }
      }
     },
     "localname": "IncreaseDecreaseInOtherOperatingCapitalNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSRestrictedCashDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInRegulatoryAssetsAndLiabilities": {
     "auth_ref": [
      "r130"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined.",
        "label": "Increase (Decrease) in Regulatory Assets and Liabilities",
        "negatedLabel": "Recognition, refund and collection of revenue accruals and deferrals \u2014 including accrued interest"
       }
      }
     },
     "localname": "IncreaseDecreaseInRegulatoryAssetsAndLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IncreaseDecreaseInRegulatoryLiabilities": {
     "auth_ref": [
      "r130"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet.",
        "label": "Increase (Decrease) in Regulatory Liabilities",
        "negatedTerseLabel": "Increase (Decrease) in Regulatory Liabilities"
       }
      }
     },
     "localname": "IncreaseDecreaseInRegulatoryLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IntangibleAssetsNetExcludingGoodwill": {
     "auth_ref": [
      "r286",
      "r289"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 1.0,
       "parentTag": "us-gaap_OtherAssets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.",
        "label": "Intangible Assets, Net (Excluding Goodwill)",
        "verboseLabel": "Intangible assets (net of accumulated amortization of $49 and $46, respectively)"
       }
      }
     },
     "localname": "IntangibleAssetsNetExcludingGoodwill",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_IntercompanyLoansDescription": {
     "auth_ref": [
      "r686"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Description of intercompany loans made between the LLC or LP and its managing member or general partner or affiliates, including the amount of loan, key terms of loan, type of note, date of issuance, collateral held, interest rate, and allowance for doubtful accounts provided for, if any.",
        "label": "Intercompany Loans, Description",
        "terseLabel": "Intercompany Loans, Description"
       }
      }
     },
     "localname": "IntercompanyLoansDescription",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_InterestAndFeeIncomeOtherLoans": {
     "auth_ref": [
      "r751"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of interest and fee income from loans classified as other.",
        "label": "Interest and Fee Income, Other Loans",
        "terseLabel": "Interest and Fee Income, Other Loans"
       }
      }
     },
     "localname": "InterestAndFeeIncomeOtherLoans",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestExpense": {
     "auth_ref": [
      "r98",
      "r213",
      "r672",
      "r674",
      "r752"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 1.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of the cost of borrowed funds accounted for as interest expense.",
        "label": "Interest Expense",
        "negatedTerseLabel": "Interest expense",
        "terseLabel": "Interest expense, net",
        "verboseLabel": "Interest expense"
       }
      }
     },
     "localname": "InterestExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPaidNet": {
     "auth_ref": [
      "r124",
      "r127",
      "r136"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.",
        "label": "Interest Paid, Excluding Capitalized Interest, Operating Activities",
        "terseLabel": "Interest Paid, Excluding Capitalized Interest, Operating Activities",
        "verboseLabel": "Interest paid"
       }
      }
     },
     "localname": "InterestPaidNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestPayableCurrent": {
     "auth_ref": [
      "r18",
      "r19",
      "r63"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 3.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Interest Payable, Current",
        "terseLabel": "Accrued interest",
        "verboseLabel": "Accrued interest"
       }
      }
     },
     "localname": "InterestPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InterestRateSwapMember": {
     "auth_ref": [
      "r619"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Forward based contracts in which two parties agree to swap periodic payments that are fixed at the outset of the swap contract with variable payments based on a market interest rate (index rate) over a specified period.",
        "label": "Interest Rate Swap [Member]",
        "terseLabel": "Interest Rate Swap [Member]"
       }
      }
     },
     "localname": "InterestRateSwapMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/DEBTInterestRateSwapAgreementsDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InterimPeriodCostsNotAllocableDomain": {
     "auth_ref": [
      "r193"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "This element represents the type of costs and expenses incurred during an interim period that cannot be readily identified with the activities or benefits of other interim periods and are charged to the interim period in which incurred.",
        "label": "Interim Period, Costs Not Allocable [Domain]",
        "terseLabel": "Interim Period, Costs Not Allocable [Domain]"
       }
      }
     },
     "localname": "InterimPeriodCostsNotAllocableDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_InventoryNet": {
     "auth_ref": [
      "r10",
      "r73",
      "r693"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 3.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.",
        "label": "Inventory, Net",
        "terseLabel": "Inventory"
       }
      }
     },
     "localname": "InventoryNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_InventoryPolicyTextBlock": {
     "auth_ref": [
      "r20",
      "r74",
      "r144",
      "r192",
      "r277",
      "r278",
      "r279",
      "r728"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.",
        "label": "Inventory, Policy [Policy Text Block]",
        "terseLabel": "Inventories"
       }
      }
     },
     "localname": "InventoryPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures": {
     "auth_ref": [
      "r52"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_AssetsNoncurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of investment in equity method investee and investment in and advance to affiliate.",
        "label": "Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures",
        "terseLabel": "Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures"
       }
      }
     },
     "localname": "InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_JointlyOwnedUtilityPlantAxis": {
     "auth_ref": [
      "r811"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of jointly owned utility plant.",
        "label": "Jointly Owned Utility Plant [Axis]",
        "terseLabel": "Jointly Owned Utility Plant [Axis]"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_JointlyOwnedUtilityPlantDomain": {
     "auth_ref": [
      "r810"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Types of a jointly owned utility plant.",
        "label": "Jointly Owned Utility Plant [Domain]",
        "terseLabel": "Jointly Owned Utility Plant [Domain]"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService": {
     "auth_ref": [
      "r811"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The period end amount owned by the reporting utility of a jointly owned utility plant in service.",
        "label": "Jointly Owned Utility Plant, Gross Ownership Amount of Plant in Service",
        "terseLabel": "Net investment"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantGrossOwnershipAmountOfPlantInService",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_JointlyOwnedUtilityPlantInterestsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Jointly Owned Utility Plant Interests [Line Items]",
        "terseLabel": "Jointly Owned Utility Plant Interests"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantInterestsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_JointlyOwnedUtilityPlantInterestsTable": {
     "auth_ref": [
      "r811"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Detailed information about jointly owned utility plants.",
        "label": "Jointly Owned Utility Plant Interests [Table]",
        "terseLabel": "Jointly Owned Utility Plant Interests [Table]"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantInterestsTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress": {
     "auth_ref": [
      "r811"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The period end amount of construction work in progress at a jointly owned electricity generation plant.",
        "label": "Jointly Owned Utility Plant, Ownership Amount of Construction Work in Progress",
        "terseLabel": "Jointly Owned Utility Plant, Ownership Amount of Construction Work in Progress"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare": {
     "auth_ref": [
      "r811"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The proportionate share of interest (percent) in a jointly owned utility plant.",
        "label": "Jointly Owned Utility Plant, Proportionate Ownership Share",
        "terseLabel": "Jointly Owned Utility Plant, Proportionate Ownership Share"
       }
      }
     },
     "localname": "JointlyOwnedUtilityPlantProportionateOwnershipShare",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESScheduleofJointlyOwnedUtilityPlantDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_LeasesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Leases [Abstract]",
        "terseLabel": "Leases [Abstract]"
       }
      }
     },
     "localname": "LeasesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_LesseeLeaseDescriptionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Lessee, Lease, Description [Line Items]",
        "terseLabel": "Lessee, Lease, Description [Line Items]"
       }
      }
     },
     "localname": "LesseeLeaseDescriptionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/LEASESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LesseeLeaseDescriptionTable": {
     "auth_ref": [
      "r677"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about lessee's leases.",
        "label": "Lessee, Lease, Description [Table]",
        "terseLabel": "Lessee, Lease, Description [Table]"
       }
      }
     },
     "localname": "LesseeLeaseDescriptionTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/LEASESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_Liabilities": {
     "auth_ref": [
      "r62",
      "r151",
      "r224",
      "r259",
      "r317",
      "r318",
      "r319",
      "r322",
      "r323",
      "r324",
      "r326",
      "r328",
      "r330",
      "r331",
      "r600",
      "r603",
      "r604",
      "r651",
      "r691",
      "r692"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.",
        "label": "Liabilities",
        "totalLabel": "Liabilities"
       }
      }
     },
     "localname": "Liabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquity": {
     "auth_ref": [
      "r48",
      "r151",
      "r259",
      "r651",
      "r693",
      "r745",
      "r765"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.",
        "label": "Liabilities and Equity",
        "totalLabel": "TOTAL LIABILITIES AND STOCKHOLDER\u2019S EQUITY"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesAndStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities and Equity [Abstract]",
        "terseLabel": "LIABILITIES AND STOCKHOLDER\u2019S EQUITY",
        "verboseLabel": "LIABILITIES AND STOCKHOLDER\u2019S EQUITY"
       }
      }
     },
     "localname": "LiabilitiesAndStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LiabilitiesCurrent": {
     "auth_ref": [
      "r64",
      "r151",
      "r259",
      "r317",
      "r318",
      "r319",
      "r322",
      "r323",
      "r324",
      "r326",
      "r328",
      "r330",
      "r331",
      "r600",
      "r603",
      "r604",
      "r651",
      "r691",
      "r692",
      "r693"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 6.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.",
        "label": "Liabilities, Current",
        "totalLabel": "Total current liabilities"
       }
      }
     },
     "localname": "LiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LiabilitiesCurrentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Liabilities, Current [Abstract]",
        "terseLabel": "Current liabilities",
        "verboseLabel": "Current liabilities"
       }
      }
     },
     "localname": "LiabilitiesCurrentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LineOfCredit": {
     "auth_ref": [
      "r35",
      "r744",
      "r757"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.",
        "label": "Long-term Line of Credit",
        "terseLabel": "Outstanding balance"
       }
      }
     },
     "localname": "LineOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityCommitmentFeePercentage": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.",
        "label": "Line of Credit Facility, Commitment Fee Percentage",
        "terseLabel": "Commitment fee rate"
       }
      }
     },
     "localname": "LineOfCreditFacilityCommitmentFeePercentage",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity": {
     "auth_ref": [
      "r60"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.",
        "label": "Line of Credit Facility, Current Borrowing Capacity",
        "totalLabel": "Total available capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityCurrentBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Line of Credit Facility [Line Items]",
        "terseLabel": "Line of Credit Facility"
       }
      }
     },
     "localname": "LineOfCreditFacilityLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity": {
     "auth_ref": [
      "r60"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).",
        "label": "Line of Credit Facility, Remaining Borrowing Capacity",
        "terseLabel": "Unused capacity"
       }
      }
     },
     "localname": "LineOfCreditFacilityRemainingBorrowingCapacity",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LineOfCreditFacilityTable": {
     "auth_ref": [
      "r60",
      "r150"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A table or schedule providing information pertaining to short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.",
        "label": "Line of Credit Facility [Table]",
        "terseLabel": "Line of Credit Facility [Table]"
       }
      }
     },
     "localname": "LineOfCreditFacilityTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTRevolvingCreditAgreementsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LineOfCreditMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time, and under which borrowings outstanding may be either short-term or long-term, depending upon the particulars.",
        "label": "Line of Credit [Member]",
        "terseLabel": "Line of Credit"
       }
      }
     },
     "localname": "LineOfCreditMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock": {
     "auth_ref": [
      "r244"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.",
        "label": "Loans, Notes, Trade and Other Receivables Disclosure [Text Block]",
        "terseLabel": "ACCOUNTS RECEIVABLE"
       }
      }
     },
     "localname": "LoansNotesTradeAndOtherReceivablesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLE"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_LongTermDebt": {
     "auth_ref": [
      "r35",
      "r346",
      "r362",
      "r363",
      "r364",
      "r744",
      "r761"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt",
        "terseLabel": "Book value of long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving and term loan credit agreements and commercial paper"
       }
      }
     },
     "localname": "LongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtCurrent": {
     "auth_ref": [
      "r61"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 7.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt, Current Maturities",
        "terseLabel": "Debt maturing within one year"
       }
      }
     },
     "localname": "LongTermDebtCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtFairValue": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.",
        "label": "Long-term Debt, Fair Value",
        "terseLabel": "Fair value of long-term debt and debt maturing within one year, excluding revolving and term loan credit agreements and commercial paper"
       }
      }
     },
     "localname": "LongTermDebtFairValue",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive": {
     "auth_ref": [
      "r157",
      "r314",
      "r351"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails": {
       "order": 6.0,
       "parentTag": "itc_DebtLongtermandShorttermCombinedAmountGross",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_DebtInstrumentCarryingAmount",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, after Year Five",
        "terseLabel": "2027 and thereafter"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths": {
     "auth_ref": [
      "r157",
      "r314",
      "r351"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails": {
       "order": 1.0,
       "parentTag": "itc_DebtLongtermandShorttermCombinedAmountGross",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_DebtInstrumentCarryingAmount",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year One",
        "terseLabel": "2019"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive": {
     "auth_ref": [
      "r157",
      "r314",
      "r351"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails": {
       "order": 5.0,
       "parentTag": "itc_DebtLongtermandShorttermCombinedAmountGross",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_DebtInstrumentCarryingAmount",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year Five",
        "terseLabel": "2023"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour": {
     "auth_ref": [
      "r157",
      "r314",
      "r351"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails": {
       "order": 4.0,
       "parentTag": "itc_DebtLongtermandShorttermCombinedAmountGross",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_DebtInstrumentCarryingAmount",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year Four",
        "terseLabel": "2022"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree": {
     "auth_ref": [
      "r157",
      "r314",
      "r351"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails": {
       "order": 3.0,
       "parentTag": "itc_DebtLongtermandShorttermCombinedAmountGross",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_DebtInstrumentCarryingAmount",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year Three",
        "terseLabel": "2021"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo": {
     "auth_ref": [
      "r157",
      "r314",
      "r351"
     ],
     "calculation": {
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails": {
       "order": 2.0,
       "parentTag": "itc_DebtLongtermandShorttermCombinedAmountGross",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_DebtInstrumentCarryingAmount",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Long-Term Debt, Maturity, Year Two",
        "terseLabel": "2020"
       }
      }
     },
     "localname": "LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongTermDebtNoncurrent": {
     "auth_ref": [
      "r66"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 7.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.",
        "label": "Long-term Debt, Excluding Current Maturities",
        "terseLabel": "Long-term debt",
        "verboseLabel": "Long-term debt (net of deferred financing fees and discount of $17 and $21, respectively)"
       }
      }
     },
     "localname": "LongTermDebtNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_LongtermDebtTypeAxis": {
     "auth_ref": [
      "r66"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of long-term debt.",
        "label": "Long-term Debt, Type [Axis]",
        "terseLabel": "Long-term Debt, Type [Axis]"
       }
      }
     },
     "localname": "LongtermDebtTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_LongtermDebtTypeDomain": {
     "auth_ref": [
      "r66",
      "r315"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of long-term debt arrangement, such as notes, line of credit, commercial paper, asset-based financing, project financing, letter of credit financing. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer.",
        "label": "Long-term Debt, Type [Domain]",
        "terseLabel": "Long-term Debt, Type [Domain]"
       }
      }
     },
     "localname": "LongtermDebtTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_MarketableSecuritiesPolicy": {
     "auth_ref": [
      "r754"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for investment classified as marketable security.",
        "label": "Marketable Securities, Policy [Policy Text Block]",
        "terseLabel": "Available-For-Sale Securities"
       }
      }
     },
     "localname": "MarketableSecuritiesPolicy",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_MaturitiesOfLongTermDebtAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Maturities of Long-term Debt [Abstract]",
        "terseLabel": "Maturities of Debt"
       }
      }
     },
     "localname": "MaturitiesOfLongTermDebtAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAnnualMaturitiesDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTDebtDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NatureOfExpenseAxis": {
     "auth_ref": [
      "r193"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of cost or expense.",
        "label": "Nature of Expense [Axis]",
        "terseLabel": "Nature of Expense [Axis]"
       }
      }
     },
     "localname": "NatureOfExpenseAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivities": {
     "auth_ref": [
      "r126"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 3.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.",
        "label": "Net Cash Provided by (Used in) Financing Activities",
        "totalLabel": "Net cash provided by financing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Financing Activities [Abstract]",
        "terseLabel": "CASH FLOWS FROM FINANCING ACTIVITIES"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInFinancingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivities": {
     "auth_ref": [
      "r126"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 2.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.",
        "label": "Net Cash Provided by (Used in) Investing Activities",
        "totalLabel": "Net cash used in investing activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Investing Activities [Abstract]",
        "terseLabel": "CASH FLOWS FROM INVESTING ACTIVITIES"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInInvestingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivities": {
     "auth_ref": [
      "r126",
      "r129",
      "r132"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 1.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.",
        "label": "Net Cash Provided by (Used in) Operating Activities",
        "totalLabel": "Net cash provided by operating activities"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Net Cash Provided by (Used in) Operating Activities [Abstract]",
        "terseLabel": "CASH FLOWS FROM OPERATING ACTIVITIES"
       }
      }
     },
     "localname": "NetCashProvidedByUsedInOperatingActivitiesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NetIncomeLoss": {
     "auth_ref": [
      "r7",
      "r87",
      "r90",
      "r96",
      "r101",
      "r132",
      "r151",
      "r166",
      "r172",
      "r173",
      "r175",
      "r176",
      "r180",
      "r181",
      "r188",
      "r217",
      "r222",
      "r226",
      "r229",
      "r232",
      "r259",
      "r317",
      "r318",
      "r319",
      "r322",
      "r323",
      "r324",
      "r326",
      "r328",
      "r330",
      "r331",
      "r639",
      "r651",
      "r748",
      "r769"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 1.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.",
        "label": "Net Income (Loss) Attributable to Parent",
        "negatedTerseLabel": "NET INCOME",
        "terseLabel": "NET INCOME",
        "totalLabel": "NET INCOME"
       }
      }
     },
     "localname": "NetIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails",
      "http://www.itctransco.com/role/SUPPLEMENTARYQUARTERLYFINANCIALINFORMATIONUnauditedDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Accounting Standards Update and Change in Accounting Principle [Abstract]",
        "terseLabel": "New Accounting Pronouncements and Changes in Accounting Principles [Abstract]"
       }
      }
     },
     "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock": {
     "auth_ref": [
      "r5",
      "r164",
      "r165",
      "r168",
      "r169",
      "r182",
      "r183",
      "r184",
      "r250",
      "r251",
      "r264",
      "r265",
      "r408",
      "r409",
      "r410",
      "r411",
      "r541",
      "r577",
      "r578",
      "r579",
      "r635",
      "r658",
      "r659",
      "r660",
      "r681",
      "r734",
      "r735",
      "r736",
      "r784",
      "r785",
      "r786",
      "r787",
      "r789",
      "r836"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.",
        "label": "Accounting Standards Update and Change in Accounting Principle [Text Block]",
        "terseLabel": "RECENT ACCOUNTING PRONOUNCEMENTS"
       }
      }
     },
     "localname": "NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTS"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "New Accounting Pronouncements or Change in Accounting Principle [Line Items]",
        "terseLabel": "New Accounting Pronouncements or Change in Accounting Principle [Line Items]"
       }
      }
     },
     "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSRestrictedCashDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable": {
     "auth_ref": [
      "r0",
      "r1",
      "r2",
      "r3",
      "r4",
      "r163",
      "r166",
      "r167",
      "r168",
      "r170",
      "r171",
      "r175",
      "r182",
      "r191",
      "r248",
      "r249",
      "r260",
      "r261",
      "r262",
      "r263",
      "r266",
      "r267",
      "r316",
      "r534",
      "r535",
      "r536",
      "r537",
      "r538",
      "r539",
      "r540",
      "r542",
      "r573",
      "r574",
      "r575",
      "r576",
      "r628",
      "r629",
      "r630",
      "r631",
      "r632",
      "r633",
      "r634",
      "r636",
      "r637",
      "r638",
      "r639",
      "r652",
      "r653",
      "r654",
      "r655",
      "r656",
      "r657",
      "r661",
      "r662",
      "r680",
      "r731",
      "r732",
      "r733",
      "r778",
      "r779",
      "r780",
      "r781",
      "r782",
      "r783",
      "r784",
      "r785",
      "r786",
      "r787",
      "r788",
      "r789",
      "r831",
      "r832",
      "r833",
      "r834",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Summarization of the changes in an accounting principle or a new accounting pronouncement, including the line items affected by the change and the financial effects of the change on those particular line items.",
        "label": "Accounting Standards Update and Change in Accounting Principle [Table]",
        "terseLabel": "New Accounting Pronouncements or Change in Accounting Principle [Table]"
       }
      }
     },
     "localname": "NewAccountingPronouncementsOrChangeInAccountingPrincipleTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESComponentsofIncomeTaxProvisionDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSRestrictedCashDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1": {
     "auth_ref": [
      "r137",
      "r138",
      "r139"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities, classified as other, assumed in acquiring a business or in consideration for an asset received in a noncash or part noncash acquisition.",
        "label": "Noncash or Part Noncash Acquisition, Other Liabilities Assumed",
        "terseLabel": "Noncash or Part Noncash Acquisition, Other Liabilities Assumed"
       }
      }
     },
     "localname": "NoncashOrPartNoncashAcquisitionOtherLiabilitiesAssumed1",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NonoperatingIncomeExpense": {
     "auth_ref": [
      "r111"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 2.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).",
        "label": "Nonoperating Income (Expense)",
        "negatedTotalLabel": "Total other expenses (income)"
       }
      }
     },
     "localname": "NonoperatingIncomeExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_NonoperatingIncomeExpenseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Nonoperating Income (Expense) [Abstract]",
        "terseLabel": "OTHER EXPENSES (INCOME)"
       }
      }
     },
     "localname": "NonoperatingIncomeExpenseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_NotesReceivableRelatedPartiesNoncurrent": {
     "auth_ref": [
      "r23",
      "r42",
      "r155",
      "r685"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due after 1 year (or 1 business cycle).",
        "label": "Notes Receivable, Related Parties, Noncurrent",
        "terseLabel": "Notes Receivable, Related Parties, Noncurrent"
       }
      }
     },
     "localname": "NotesReceivableRelatedPartiesNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingExpenseMember": {
     "auth_ref": [
      "r620"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Primary financial statement caption encompassing expenses associated with normal operations.",
        "label": "Operating Expense [Member]",
        "terseLabel": "Operation and maintenance expenses"
       }
      }
     },
     "localname": "OperatingExpenseMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OperatingIncomeLoss": {
     "auth_ref": [
      "r217",
      "r222",
      "r226",
      "r229",
      "r232"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net result for the period of deducting operating expenses from operating revenues.",
        "label": "Operating Income (Loss)",
        "totalLabel": "OPERATING INCOME",
        "verboseLabel": "Operating income"
       }
      }
     },
     "localname": "OperatingIncomeLoss",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SUPPLEMENTARYQUARTERLYFINANCIALINFORMATIONUnauditedDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]",
        "terseLabel": "Future Minimum Lease Payments"
       }
      }
     },
     "localname": "OperatingLeasesFutureMinimumPaymentsDueAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingLossCarryforwardsLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Operating Loss Carryforwards [Line Items]",
        "terseLabel": "Operating Loss Carryforwards [Line Items]"
       }
      }
     },
     "localname": "OperatingLossCarryforwardsLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESINCOMETAXESAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingLossCarryforwardsTable": {
     "auth_ref": [
      "r566"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule reflecting pertinent information, such as tax authority, amounts, and expiration dates, of net operating loss carryforwards, including an assessment of the likelihood of utilization.",
        "label": "Operating Loss Carryforwards [Table]",
        "terseLabel": "Operating Loss Carryforwards [Table]"
       }
      }
     },
     "localname": "OperatingLossCarryforwardsTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESINCOMETAXESAdditionalInformationDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OperatingSegmentsMember": {
     "auth_ref": [
      "r221",
      "r222",
      "r223",
      "r224",
      "r226",
      "r232"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Identifies components of an entity that engage in business activities from which they may earn revenue and incur expenses, including transactions with other components of the same entity.",
        "label": "Operating Segments [Member]",
        "terseLabel": "Regulated Operating Subsidiaries"
       }
      }
     },
     "localname": "OperatingSegmentsMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Organization, Consolidation and Presentation of Financial Statements [Abstract]",
        "terseLabel": "Organization, Consolidation and Presentation of Financial Statements [Abstract]"
       }
      }
     },
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock": {
     "auth_ref": [
      "r8",
      "r605"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.",
        "label": "Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]",
        "terseLabel": "GENERAL"
       }
      }
     },
     "localname": "OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GENERAL"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_OtherAssets": {
     "auth_ref": [
      "r30",
      "r739",
      "r759"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of assets classified as other.",
        "label": "Other Assets",
        "totalLabel": "Other Assets"
       }
      }
     },
     "localname": "OtherAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherAssetsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Assets [Abstract]",
        "terseLabel": "Other assets",
        "verboseLabel": "Other assets"
       }
      }
     },
     "localname": "OtherAssetsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherAssetsNoncurrent": {
     "auth_ref": [
      "r57"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 3.0,
       "parentTag": "us-gaap_OtherAssets",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_AssetsNoncurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of noncurrent assets classified as other.",
        "label": "Other Assets, Noncurrent",
        "terseLabel": "Other assets",
        "verboseLabel": "Other assets"
       }
      }
     },
     "localname": "OtherAssetsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherCommitmentsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Commitments [Abstract]",
        "terseLabel": "Other Commitments"
       }
      }
     },
     "localname": "OtherCommitmentsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]",
        "terseLabel": "Derivatives Instruments [Abstract]"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecreaseAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax": {
     "auth_ref": [
      "r80",
      "r82"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.",
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax",
        "terseLabel": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax": {
     "auth_ref": [
      "r80",
      "r82"
     ],
     "calculation": {
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, after tax and before reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.",
        "label": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax",
        "terseLabel": "Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossNetOfTax": {
     "auth_ref": [
      "r88",
      "r91",
      "r94",
      "r95",
      "r97",
      "r102",
      "r384",
      "r664",
      "r669",
      "r670",
      "r749",
      "r770"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 2.0,
       "parentTag": "us-gaap_ComprehensiveIncomeNetOfTax",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after tax and reclassification adjustments of other comprehensive income (loss).",
        "label": "Other Comprehensive Income (Loss), Net of Tax",
        "terseLabel": "Derivative instruments, net of tax",
        "totalLabel": "TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX",
        "verboseLabel": "TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherComprehensiveIncomeLossTax": {
     "auth_ref": [
      "r83",
      "r94",
      "r102",
      "r552",
      "r587",
      "r589",
      "r664",
      "r667",
      "r670",
      "r749",
      "r770"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of tax expense (benefit) allocated to other comprehensive income (loss).",
        "label": "Other Comprehensive Income (Loss), Tax",
        "negatedTerseLabel": "Other Comprehensive Income (Loss), Tax (less than $1 million)"
       }
      }
     },
     "localname": "OtherComprehensiveIncomeLossTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherLiabilitiesCurrent": {
     "auth_ref": [
      "r16",
      "r17",
      "r63",
      "r693"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 8.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.",
        "label": "Other Liabilities, Current",
        "terseLabel": "Other current liabilities",
        "verboseLabel": "Other current liabilities"
       }
      }
     },
     "localname": "OtherLiabilitiesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherLiabilitiesMember": {
     "auth_ref": [
      "r612",
      "r625"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Primary financial statement caption encompassing other liabilities.",
        "label": "Other Liabilities [Member]",
        "terseLabel": "Other Liabilities [Member]"
       }
      }
     },
     "localname": "OtherLiabilitiesMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherLiabilitiesNoncurrent": {
     "auth_ref": [
      "r67"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 6.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.",
        "label": "Other Liabilities, Noncurrent",
        "terseLabel": "Other liabilities",
        "verboseLabel": "Other liabilities"
       }
      }
     },
     "localname": "OtherLiabilitiesNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherLongTermDebt": {
     "auth_ref": [
      "r35",
      "r744",
      "r761"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of long-term debt classified as other.",
        "label": "Other Long-term Debt",
        "terseLabel": "Other long-term debt"
       }
      }
     },
     "localname": "OtherLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherNoncashIncomeExpense": {
     "auth_ref": [
      "r132"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other.",
        "label": "Other Noncash Income (Expense)",
        "negatedLabel": "Other"
       }
      }
     },
     "localname": "OtherNoncashIncomeExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherNonoperatingIncomeExpense": {
     "auth_ref": [
      "r112"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 3.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of income (expense) related to nonoperating activities, classified as other.",
        "label": "Other Nonoperating Income (Expense)",
        "negatedLabel": "Other (income) and expenses, net",
        "negatedTerseLabel": "Other Nonoperating Income (Expense)"
       }
      }
     },
     "localname": "OtherNonoperatingIncomeExpense",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherOperatingIncomeExpenseNet": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 5.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.",
        "label": "Other Operating Income (Expense), Net",
        "negatedLabel": "Other operating (income) and expense, net",
        "terseLabel": "Other income (expense), net"
       }
      }
     },
     "localname": "OtherOperatingIncomeExpenseNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_OtherPensionPlansDefinedBenefitMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Plan designed to provide retirement benefits, classified as other. Includes, but is not limited to, defined benefit and defined contribution plans.",
        "label": "Other Pension Plan [Member]",
        "terseLabel": "Retirement Plan"
       }
      }
     },
     "localname": "OtherPensionPlansDefinedBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember": {
     "auth_ref": [
      "r414",
      "r415",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r450",
      "r451",
      "r452",
      "r453",
      "r454",
      "r455",
      "r456",
      "r457",
      "r458",
      "r459",
      "r460",
      "r461",
      "r463",
      "r465",
      "r466",
      "r468",
      "r471",
      "r475",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r490",
      "r491",
      "r495",
      "r496",
      "r497",
      "r498",
      "r499",
      "r500"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Plan designed to provide other postretirement benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes pension benefits.",
        "label": "Other Postretirement Benefits Plan [Member]",
        "terseLabel": "Other Postretirement Benefits Plan"
       }
      }
     },
     "localname": "OtherPostretirementBenefitPlansDefinedBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_OtherReceivables": {
     "auth_ref": [
      "r75"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount due from parties in nontrade transactions, classified as other.",
        "label": "Other Receivables",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "OtherReceivables",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ParentMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Portion of equity, or net assets, in the consolidated entity attributable, directly or indirectly, to the parent. Excludes noncontrolling interests.",
        "label": "Parent [Member]",
        "terseLabel": "Parent"
       }
      }
     },
     "localname": "ParentMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PaymentsForProceedsFromHedgeFinancingActivities": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 12.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net cash outflow or inflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.",
        "label": "Payments for (Proceeds from) Hedge, Financing Activities",
        "negatedTerseLabel": "Payments for (Proceeds from) Hedge, Financing Activities"
       }
      }
     },
     "localname": "PaymentsForProceedsFromHedgeFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsForProceedsFromOtherInvestingActivities": {
     "auth_ref": [
      "r114",
      "r118"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash (inflow) outflow from investing activities classified as other.",
        "label": "Payments for (Proceeds from) Other Investing Activities",
        "negatedLabel": "Other"
       }
      }
     },
     "localname": "PaymentsForProceedsFromOtherInvestingActivities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsOfDividends": {
     "auth_ref": [
      "r121"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.",
        "label": "Payments of Dividends",
        "negatedNetLabel": "Dividends to ITC Investment Holdings",
        "negatedTerseLabel": "Dividends to ITC Investment Holdings",
        "terseLabel": "Payments of Dividends"
       }
      }
     },
     "localname": "PaymentsOfDividends",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquireInterestInSubsidiariesAndAffiliates": {
     "auth_ref": [
      "r116"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).",
        "label": "Payments to Acquire Interest in Subsidiaries and Affiliates",
        "negatedLabel": "Equity contributions to subsidiaries",
        "terseLabel": "Equity contributions to subsidiaries"
       }
      }
     },
     "localname": "PaymentsToAcquireInterestInSubsidiariesAndAffiliates",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToAcquirePropertyPlantAndEquipment": {
     "auth_ref": [
      "r117"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.",
        "label": "Payments to Acquire Property, Plant, and Equipment",
        "negatedLabel": "Expenditures for property, plant and equipment",
        "terseLabel": "Capital expenditures"
       }
      }
     },
     "localname": "PaymentsToAcquirePropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PaymentsToFundLongtermLoansToRelatedParties": {
     "auth_ref": [
      "r115",
      "r684"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow associated with extending a long-term loan to a related party. Alternate caption: Payments for Advances to Affiliates.",
        "label": "Payments to Fund Long-term Loans to Related Parties",
        "terseLabel": "Payments to Fund Long-term Loans to Related Parties"
       }
      }
     },
     "localname": "PaymentsToFundLongtermLoansToRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock": {
     "auth_ref": [
      "r440",
      "r442",
      "r448",
      "r467",
      "r469",
      "r470",
      "r471",
      "r472",
      "r473",
      "r490",
      "r492",
      "r493",
      "r495",
      "r515"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for retirement benefits.",
        "label": "Retirement Benefits [Text Block]",
        "terseLabel": "RETIREMENT AND BENEFITS AND ASSETS HELD IN TRUST"
       }
      }
     },
     "localname": "PensionAndOtherPostretirementBenefitsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUST"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent": {
     "auth_ref": [
      "r36",
      "r415",
      "r416",
      "r438",
      "r490"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 2.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_Liabilities",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.",
        "label": "Liability, Defined Benefit Plan, Noncurrent",
        "negatedTerseLabel": "Accrued pension and postretirement liabilities",
        "terseLabel": "Accrued pension and postretirement liabilities",
        "verboseLabel": "Accrued pension and postretirement liabilities"
       }
      }
     },
     "localname": "PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PensionAndOtherPostretirementPlansCostsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate action of a regulator resulting in capitalization or accrual of pension and other postretirement costs.",
        "label": "Pension and Other Postretirement Plans Costs [Member]",
        "terseLabel": "Pensions and Postretirement"
       }
      }
     },
     "localname": "PensionAndOtherPostretirementPlansCostsMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PensionPlansDefinedBenefitMember": {
     "auth_ref": [
      "r413",
      "r415",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r449",
      "r450",
      "r451",
      "r452",
      "r453",
      "r454",
      "r455",
      "r456",
      "r457",
      "r458",
      "r459",
      "r460",
      "r461",
      "r463",
      "r465",
      "r466",
      "r468",
      "r471",
      "r475",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r490",
      "r491",
      "r495",
      "r496",
      "r510",
      "r511",
      "r512",
      "r513"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Plan designed to provide participant with pension benefits. Includes, but is not limited to, defined benefit and defined contribution plans. Excludes other postretirement benefits.",
        "label": "Pension Plan [Member]",
        "terseLabel": "Defined Benefit Plans"
       }
      }
     },
     "localname": "PensionPlansDefinedBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PerformanceSharesMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share-based payment arrangement awarded for meeting performance target.",
        "label": "Performance Shares [Member]",
        "terseLabel": "Performance Based Units (PBUs)"
       }
      }
     },
     "localname": "PerformanceSharesMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PlanAssetCategoriesDomain": {
     "auth_ref": [
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r468",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Defined benefit plan asset investment.",
        "label": "Defined Benefit Plan, Plan Assets, Category [Domain]",
        "terseLabel": "Defined Benefit Plan, Plan Assets, Category [Domain]"
       }
      }
     },
     "localname": "PlanAssetCategoriesDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PlanNameAxis": {
     "auth_ref": [
      "r520",
      "r533"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by plan name for share-based payment arrangement.",
        "label": "Plan Name [Axis]",
        "terseLabel": "Plan Name [Axis]"
       }
      }
     },
     "localname": "PlanNameAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PlanNameDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Plan name for share-based payment arrangement.",
        "label": "Plan Name [Domain]",
        "terseLabel": "Plan Name [Domain]"
       }
      }
     },
     "localname": "PlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PrepaidExpenseAndOtherAssetsCurrent": {
     "auth_ref": [
      "r12",
      "r49",
      "r50"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 5.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.",
        "label": "Prepaid Expense and Other Assets, Current",
        "terseLabel": "Prepaid and other current assets",
        "verboseLabel": "Prepaid and other current assets"
       }
      }
     },
     "localname": "PrepaidExpenseAndOtherAssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromContributionInAidOfConstruction": {
     "auth_ref": [
      "r114"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from developers, builders, governmental agencies and municipalities that provide the entity with cash to extend its construction services to their properties.",
        "label": "Proceeds from Contribution in Aid of Construction",
        "terseLabel": "Contributions in aid of construction"
       }
      }
     },
     "localname": "ProceedsFromContributionInAidOfConstruction",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital": {
     "auth_ref": [
      "r113",
      "r125"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInInvestingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of distribution received from equity method investee for return of investment, classified as investing activities. Excludes distribution for return on investment, classified as operating activities.",
        "label": "Proceeds from Equity Method Investment, Distribution, Return of Capital",
        "verboseLabel": "Return of capital from subsidiaries"
       }
      }
     },
     "localname": "ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromIncomeTaxRefunds": {
     "auth_ref": [
      "r129",
      "r136"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount of cash received during the period as refunds for the overpayment of taxes.",
        "label": "Proceeds from Income Tax Refunds",
        "terseLabel": "Income tax refunds received"
       }
      }
     },
     "localname": "ProceedsFromIncomeTaxRefunds",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromIssuanceOfLongTermDebt": {
     "auth_ref": [
      "r119"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.",
        "label": "Proceeds from Issuance of Long-term Debt",
        "terseLabel": "Issuance of long-term debt"
       }
      }
     },
     "localname": "ProceedsFromIssuanceOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromLinesOfCredit": {
     "auth_ref": [
      "r119",
      "r150"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 2.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Proceeds from Lines of Credit",
        "terseLabel": "Borrowings under revolving credit agreements"
       }
      }
     },
     "localname": "ProceedsFromLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromOtherDebt": {
     "auth_ref": [
      "r119"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 3.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow from debt classified as other.",
        "label": "Proceeds from Other Debt",
        "terseLabel": "Borrowings under term loan credit agreements"
       }
      }
     },
     "localname": "ProceedsFromOtherDebt",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromPaymentsForOtherFinancingActivities": {
     "auth_ref": [
      "r120",
      "r123"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 11.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 8.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash inflow (outflow) from financing activities classified as other.",
        "label": "Proceeds from (Payments for) Other Financing Activities",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "ProceedsFromPaymentsForOtherFinancingActivities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ProceedsFromRepaymentsOfCommercialPaper": {
     "auth_ref": [
      "r119",
      "r122",
      "r134"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The net cash inflow or cash outflow from issuing (borrowing) and repaying commercial paper.",
        "label": "Proceeds from (Repayments of) Commercial Paper",
        "terseLabel": "Net issuance (repayment) of commercial paper"
       }
      }
     },
     "localname": "ProceedsFromRepaymentsOfCommercialPaper",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Property, Plant and Equipment [Abstract]",
        "terseLabel": "Property, Plant and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock": {
     "auth_ref": [
      "r302",
      "r800",
      "r801",
      "r802"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.",
        "label": "Property, Plant and Equipment Disclosure [Text Block]",
        "terseLabel": "PROPERTY, PLANT AND EQUIPMENT"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENT"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentGross": {
     "auth_ref": [
      "r55",
      "r297"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Gross",
        "terseLabel": "ITC Holdings and other"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentGross",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Property, Plant and Equipment [Line Items]",
        "terseLabel": "Property, Plant and Equipment [Line Items]"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentNet": {
     "auth_ref": [
      "r26",
      "r27",
      "r299",
      "r693",
      "r755",
      "r766"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 2.0,
       "parentTag": "us-gaap_Assets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.",
        "label": "Property, Plant and Equipment, Net",
        "terseLabel": "Property, plant and equipment (net of accumulated depreciation and amortization of $2,199 and $2,055, respectively)",
        "verboseLabel": "Property, plant and equipment, net"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentPolicyTextBlock": {
     "auth_ref": [
      "r53",
      "r299",
      "r800",
      "r801"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.",
        "label": "Property, Plant and Equipment, Policy [Policy Text Block]",
        "terseLabel": "Property, Plant and Equipment"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PropertyPlantAndEquipmentUsefulLife": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.",
        "label": "Property, Plant and Equipment, Useful Life",
        "terseLabel": "Property, plant and equipment, useful life"
       }
      }
     },
     "localname": "PropertyPlantAndEquipmentUsefulLife",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity": {
     "auth_ref": [
      "r814",
      "r815"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInOperatingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 2.0,
       "parentTag": "us-gaap_NonoperatingIncomeExpense",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets.",
        "label": "Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity",
        "negatedLabel": "Allowance for equity funds used during construction",
        "terseLabel": "Allowance for funds used during construction"
       }
      }
     },
     "localname": "PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest": {
     "auth_ref": [
      "r814"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount capitalized of allowance for funds used during construction.",
        "label": "Allowance for Funds Used During Construction, Capitalized Interest",
        "terseLabel": "AFUDC debt"
       }
      }
     },
     "localname": "PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesDisclosureTextBlock": {
     "auth_ref": [
      "r816"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for public utilities.",
        "label": "Public Utilities Disclosure [Text Block]",
        "terseLabel": "REGULATORY MATTERS"
       }
      }
     },
     "localname": "PublicUtilitiesDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERS"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PublicUtilitiesGeneralDisclosuresLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Public Utilities, General Disclosures [Line Items]",
        "terseLabel": "Public Utilities, General Disclosures [Line Items]"
       }
      }
     },
     "localname": "PublicUtilitiesGeneralDisclosuresLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PublicUtilitiesGeneralDisclosuresTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about regulation for public utility entities, including, but not limited to, rate requests, decommissioning costs and the amount of allowance for earnings on equity capitalized for rate making purposes.",
        "label": "Public Utilities General Disclosures [Table]",
        "terseLabel": "Public Utilities General Disclosures [Table]"
       }
      }
     },
     "localname": "PublicUtilitiesGeneralDisclosuresTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PublicUtilitiesPolicyTextBlock": {
     "auth_ref": [
      "r806"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for public utilities. Examples include a discussion about the scope criteria and appropriateness for and extent of the application of generally accepted accounting principles related to accounting for the effects of certain types of regulation (may include identification of specific business units). Other examples of the disclosures may include: descriptions of the form and economic effects of regulation (for example, but not limited to, recording of regulatory assets and liabilities to the rate setting process); statement about periodic assessments of periodic assessments of generally accepted accounting principles related to accounting for the effects of certain types of regulation; information regarding amortization of and return on regulatory assets and liabilities, including the remaining amounts and recovery or settlement periods; accounting for changes to recovery estimates; AFUDC, plant abandonment's and plant disallowances.",
        "label": "Public Utilities, Policy [Policy Text Block]",
        "terseLabel": "Regulation"
       }
      }
     },
     "localname": "PublicUtilitiesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Public Utilities, Property, Plant and Equipment [Abstract]",
        "terseLabel": "Public Utilities, Property, Plant and Equipment [Abstract]"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period end amount of construction work in progress in public utility.",
        "label": "Public Utilities, Property, Plant and Equipment, Construction Work in Progress",
        "terseLabel": "Construction work in progress"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Composite depreciation rate for public utility plants in service.",
        "label": "Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service",
        "terseLabel": "Composite depreciation rate"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentEquipment": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period end book value of equipment owned (but not classified elsewhere) by the public utility.",
        "label": "Public Utilities, Property, Plant and Equipment, Equipment",
        "terseLabel": "Capital equipment inventory"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentEquipment",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails": {
       "order": null,
       "parentTag": null,
       "root": true,
       "weight": null
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period end amount of total net PPE.",
        "label": "Public Utilities, Property, Plant and Equipment, Net",
        "totalLabel": "Property, plant and equipment, net"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentNet",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period end book value of other property, plant and equipment (PPE) owned (but not classified elsewhere) by the public utility.",
        "label": "Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment",
        "terseLabel": "Other"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentOtherPropertyPlantAndEquipment",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentPlantInService": {
     "auth_ref": [],
     "calculation": {
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentNet",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period end amount of total gross PPE.",
        "label": "Public Utilities, Property, Plant and Equipment, Plant in Service",
        "terseLabel": "Total"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentPlantInService",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesPropertyPlantAndEquipmentTransmission": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Period end amount of property, plant and equipment (PPE) related to utility transmission owned by public utility.",
        "label": "Public Utilities, Property, Plant and Equipment, Transmission",
        "terseLabel": "Property, plant and equipment in service"
       }
      }
     },
     "localname": "PublicUtilitiesPropertyPlantAndEquipmentTransmission",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PublicUtilitiesRegulatoryProceedingAxis": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by name of regulatory proceeding.",
        "label": "Public Utilities, Regulatory Proceeding [Axis]",
        "terseLabel": "Public Utilities, Regulatory Proceeding [Axis]"
       }
      }
     },
     "localname": "PublicUtilitiesRegulatoryProceedingAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PublicUtilitiesRegulatoryProceedingDomain": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Proceeding with public utility's regulatory body.",
        "label": "Public Utilities, Regulatory Proceeding [Domain]",
        "terseLabel": "Public Utilities, Regulatory Proceeding [Domain]"
       }
      }
     },
     "localname": "PublicUtilitiesRegulatoryProceedingDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_PublicUtilityPropertyPlantAndEquipmentLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Public Utility, Property, Plant and Equipment [Line Items]",
        "terseLabel": "Property, Plant and Equipment"
       }
      }
     },
     "localname": "PublicUtilityPropertyPlantAndEquipmentLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PublicUtilityPropertyPlantAndEquipmentTable": {
     "auth_ref": [
      "r54",
      "r807"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, deprecation expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Public Utility, Property, Plant and Equipment [Table]",
        "terseLabel": "Public Utility, Property, Plant and Equipment [Table]"
       }
      }
     },
     "localname": "PublicUtilityPropertyPlantAndEquipmentTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PublicUtilityRegulatedOrUnregulatedStatusAxis": {
     "auth_ref": [
      "r25",
      "r807"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by status (regulated or unregulated) of the public utility.",
        "label": "Regulation Status [Axis]",
        "terseLabel": "Regulation Status [Axis]"
       }
      }
     },
     "localname": "PublicUtilityRegulatedOrUnregulatedStatusAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_PurchaseObligation": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.",
        "label": "Purchase Obligation",
        "terseLabel": "Purchase obligations"
       }
      }
     },
     "localname": "PurchaseObligation",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_PurchaseObligationDueInNextTwelveMonths": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of purchase arrangement to be paid in next fiscal year following current fiscal year. Includes, but is not limited to, recorded and unrecorded purchase obligations, long-term purchase commitment, and short-term purchase commitment. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).",
        "label": "Purchase Obligation, to be Paid, Year One",
        "terseLabel": "Purchase Obligation, Due in Next Twelve Months"
       }
      }
     },
     "localname": "PurchaseObligationDueInNextTwelveMonths",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReceivableTypeDomain": {
     "auth_ref": [
      "r72"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Financing arrangement representing a contractual right to receive money either on demand or on fixed and determinable dates.",
        "label": "Receivable [Domain]",
        "terseLabel": "Receivable [Domain]"
       }
      }
     },
     "localname": "ReceivableTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ReceivablesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Receivables [Abstract]",
        "terseLabel": "Receivables [Abstract]"
       }
      }
     },
     "localname": "ReceivablesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReceivablesPolicyTextBlock": {
     "auth_ref": [
      "r242",
      "r245",
      "r246",
      "r247"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for receivable. Includes, but is not limited to, accounts receivable and financing receivable.",
        "label": "Receivable [Policy Text Block]",
        "terseLabel": "Accounts Receivables"
       }
      }
     },
     "localname": "ReceivablesPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]",
        "terseLabel": "Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]"
       }
      }
     },
     "localname": "ReclassificationAdjustmentOutOfAccumulatedOtherComprehensiveIncomeLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax": {
     "auth_ref": [
      "r85",
      "r94",
      "r95",
      "r664",
      "r668",
      "r670"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount before tax of reclassification adjustments of other comprehensive income (loss).",
        "label": "Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax",
        "negatedTerseLabel": "Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax"
       }
      }
     },
     "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYAdditionalInformationDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax": {
     "auth_ref": [
      "r85",
      "r94",
      "r95",
      "r97",
      "r664",
      "r668",
      "r670"
     ],
     "calculation": {
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_OtherComprehensiveIncomeLossNetOfTax",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount after tax of reclassification adjustments of other comprehensive income (loss).",
        "label": "Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax",
        "terseLabel": "Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax"
       }
      }
     },
     "localname": "ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReclassificationFromAociCurrentPeriodTax": {
     "auth_ref": [
      "r83",
      "r86",
      "r94"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss).",
        "label": "Reclassification from AOCI, Current Period, Tax",
        "terseLabel": "Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax"
       }
      }
     },
     "localname": "ReclassificationFromAociCurrentPeriodTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis": {
     "auth_ref": [
      "r96"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by item reclassified out of accumulated other comprehensive income (loss).",
        "label": "Reclassification out of Accumulated Other Comprehensive Income [Axis]",
        "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Axis]"
       }
      }
     },
     "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain": {
     "auth_ref": [
      "r96"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Item reclassified out of accumulated other comprehensive income (loss).",
        "label": "Reclassification out of Accumulated Other Comprehensive Income [Domain]",
        "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Domain]"
       }
      }
     },
     "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable": {
     "auth_ref": [
      "r96"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about items reclassified out of accumulated other comprehensive income (loss).",
        "label": "Reclassification out of Accumulated Other Comprehensive Income [Table]",
        "terseLabel": "Reclassification out of Accumulated Other Comprehensive Income [Table]"
       }
      }
     },
     "localname": "ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RegulatedAndUnregulatedOperationDomain": {
     "auth_ref": [
      "r807"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Operations of companies, both regulated and unregulated.",
        "label": "Regulated and Unregulated Operation [Domain]",
        "terseLabel": "Regulated and Unregulated Operation [Domain]"
       }
      }
     },
     "localname": "RegulatedAndUnregulatedOperationDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RegulatedOperationMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Operation of entities that are regulated by governmental organizations for example, but not limited to, local, state, county, country, or other regulatory organizations.",
        "label": "Regulated Operation [Member]",
        "terseLabel": "Regulated Operating Subsidiaries"
       }
      }
     },
     "localname": "RegulatedOperationMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RegulatedOperationsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Regulated Operations [Abstract]",
        "terseLabel": "Regulated Operations [Abstract]"
       }
      }
     },
     "localname": "RegulatedOperationsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RegulatoryAssetAmortizationPeriod": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.",
        "label": "Regulatory Asset, Amortization Period",
        "terseLabel": "Regulatory asset, amortization period"
       }
      }
     },
     "localname": "RegulatoryAssetAmortizationPeriod",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails"
     ],
     "xbrltype": "durationItemType"
    },
    "us-gaap_RegulatoryAssetAxis": {
     "auth_ref": [
      "r808",
      "r809",
      "r813"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of regulatory asset.",
        "label": "Regulatory Asset [Axis]",
        "terseLabel": "Regulatory Asset [Axis]"
       }
      }
     },
     "localname": "RegulatoryAssetAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RegulatoryAssetDomain": {
     "auth_ref": [
      "r808"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate action of a regulator resulting in capitalization of costs incurred.",
        "label": "Regulatory Asset [Domain]",
        "terseLabel": "Regulatory Asset [Domain]"
       }
      }
     },
     "localname": "RegulatoryAssetDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RegulatoryAssetLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Regulatory Assets [Line Items]",
        "terseLabel": "Regulatory Assets"
       }
      }
     },
     "localname": "RegulatoryAssetLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RegulatoryAssets": {
     "auth_ref": [
      "r808"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period.",
        "label": "Regulatory Assets",
        "terseLabel": "Regulatory assets"
       }
      }
     },
     "localname": "RegulatoryAssets",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RegulatoryAssetsAndLiabilitiesDisclosureAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Regulatory Assets and Liabilities Disclosure [Abstract]",
        "terseLabel": "Regulatory Assets and Liabilities Disclosure [Abstract]"
       }
      }
     },
     "localname": "RegulatoryAssetsAndLiabilitiesDisclosureAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYMATTERSChangesinRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RegulatoryAssetsCurrent": {
     "auth_ref": [
      "r808"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 4.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_AssetsCurrent",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are expected to be recovered through revenue sources within one year or the normal operating cycle, if longer. Such costs are capitalized if they meet both of the following criteria: a. It is probable that future revenue in an amount at least equal to the capitalized cost will result from inclusion of that cost in allowable costs for rate-making purposes. b. Based on available evidence, the future revenue will be provided to permit recovery of the previously incurred cost rather than to provide for expected levels of similar future costs. If the revenue will be provided through an automatic rate-adjustment clause, this criterion requires that the regulator's intent clearly be to permit recovery of the previously incurred cost.",
        "label": "Regulatory Assets, Current",
        "terseLabel": "Regulatory assets",
        "verboseLabel": "Current regulatory assets"
       }
      }
     },
     "localname": "RegulatoryAssetsCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RegulatoryAssetsNoncurrent": {
     "auth_ref": [
      "r808"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 4.0,
       "parentTag": "us-gaap_OtherAssets",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying amount as of the balance sheet date of capitalized costs of regulated entities that are not expected to be recovered through revenue sources within one year or the normal operating cycle if longer.",
        "label": "Regulatory Assets, Noncurrent",
        "terseLabel": "Regulatory assets",
        "verboseLabel": "Non-current regulatory assets"
       }
      }
     },
     "localname": "RegulatoryAssetsNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RegulatoryLiabilities": {
     "auth_ref": [
      "r812"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount for the individual regulatory liability as itemized in a table of regulatory liabilities as of the end of the period.",
        "label": "Regulatory Liabilities",
        "terseLabel": "Regulatory liabilities"
       }
      }
     },
     "localname": "RegulatoryLiabilities",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RegulatoryLiabilitiesLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Regulatory Liabilities [Line Items]",
        "terseLabel": "Regulatory Liabilities"
       }
      }
     },
     "localname": "RegulatoryLiabilitiesLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RegulatoryLiabilityAxis": {
     "auth_ref": [
      "r812"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of regulatory liability.",
        "label": "Regulatory Liability [Axis]",
        "terseLabel": "Regulatory Liability [Axis]"
       }
      }
     },
     "localname": "RegulatoryLiabilityAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RegulatoryLiabilityCurrent": {
     "auth_ref": [
      "r812"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 5.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount for the individual regulatory current liability as itemized in a table of regulatory current liabilities as of the end of the period.",
        "label": "Regulatory Liability, Current",
        "negatedLabel": "Current regulatory liabilities",
        "terseLabel": "Regulatory liabilities",
        "verboseLabel": "Current regulatory liabilities"
       }
      }
     },
     "localname": "RegulatoryLiabilityCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RegulatoryLiabilityDomain": {
     "auth_ref": [
      "r812"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate action of a regulator resulting in accrual of costs or expenses.",
        "label": "Regulatory Liability [Domain]",
        "terseLabel": "Regulatory Liability [Domain]"
       }
      }
     },
     "localname": "RegulatoryLiabilityDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RegulatoryLiabilityNoncurrent": {
     "auth_ref": [
      "r67"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 4.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The amount for the individual regulatory noncurrent liability as itemized in a table of regulatory noncurrent liabilities as of the end of the period.",
        "label": "Regulatory Liability, Noncurrent",
        "negatedLabel": "Non-current regulatory liabilities",
        "terseLabel": "Regulatory liabilities",
        "verboseLabel": "Non-current regulatory liabilities"
       }
      }
     },
     "localname": "RegulatoryLiabilityNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/INCOMETAXESDeferredTaxAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails",
      "http://www.itctransco.com/role/REGULATORYMATTERSScheduleofRegulatoryAssetsandLiabilitiesDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Related Party Transaction [Line Items]",
        "terseLabel": "Related Party Transaction [Line Items]"
       }
      }
     },
     "localname": "RelatedPartyTransactionLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty": {
     "auth_ref": [],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period.",
        "label": "Related Party Transaction, Other Revenues from Transactions with Related Party",
        "terseLabel": "Related Party Transaction, Other Revenues from Transactions with Related Party (2016 less than $1 million)"
       }
      }
     },
     "localname": "RelatedPartyTransactionOtherRevenuesFromTransactionsWithRelatedParty",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.",
        "label": "Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party",
        "terseLabel": "Related Party Charges for Corporate expenses recorded in general and administrative expense (less than $1 million)"
       }
      }
     },
     "localname": "RelatedPartyTransactionSellingGeneralAndAdministrativeExpensesFromTransactionsWithRelatedParty",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RelatedPartyTransactionsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Related Party Transactions [Abstract]",
        "terseLabel": "Related Party Transactions [Abstract]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RelatedPartyTransactionsDisclosureTextBlock": {
     "auth_ref": [
      "r682",
      "r683",
      "r685",
      "r688",
      "r689"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Related Party Transactions Disclosure [Text Block]",
        "terseLabel": "Related Party Transactions Disclosure [Text Block]"
       }
      }
     },
     "localname": "RelatedPartyTransactionsDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONS"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RemovalCostsMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Rate action of a regulator resulting in capitalization or accrual of removal costs.",
        "label": "Removal Costs [Member]",
        "terseLabel": "Accrued Asset Removal Costs"
       }
      }
     },
     "localname": "RemovalCostsMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RepaymentsOfLinesOfCredit": {
     "auth_ref": [
      "r122",
      "r150"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 6.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.",
        "label": "Repayments of Lines of Credit",
        "negatedLabel": "Repayments of revolving credit agreements",
        "negatedTerseLabel": "Repayments of revolving credit agreement"
       }
      }
     },
     "localname": "RepaymentsOfLinesOfCredit",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfLongTermDebt": {
     "auth_ref": [
      "r122"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 5.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 9.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.",
        "label": "Repayments of Long-term Debt",
        "negatedTerseLabel": "Retirement of long-term debt \u2014 including extinguishment of debt costs"
       }
      }
     },
     "localname": "RepaymentsOfLongTermDebt",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RepaymentsOfOtherDebt": {
     "auth_ref": [
      "r122"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS": {
       "order": 7.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails": {
       "order": 4.0,
       "parentTag": "us-gaap_NetCashProvidedByUsedInFinancingActivities",
       "weight": -1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash outflow for the payment of debt classified as other.",
        "label": "Repayments of Other Debt",
        "negatedTerseLabel": "Repayments of term loan credit agreements"
       }
      }
     },
     "localname": "RepaymentsOfOtherDebt",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofCashFlowsParentCompanyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RestrictedCashNoncurrent": {
     "auth_ref": [
      "r14",
      "r30",
      "r140",
      "r796"
     ],
     "calculation": {
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATIONRestrictedCashReconciliation": {
       "order": 2.0,
       "parentTag": "us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.",
        "label": "Restricted Cash, Noncurrent",
        "periodEndLabel": "Restricted Cash, Ending Balance",
        "periodStartLabel": "Restricted Cash - Beginning Balance",
        "terseLabel": "Restricted Cash, included in other non-current assets"
       }
      }
     },
     "localname": "RestrictedCashNoncurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSRestrictedCashDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTSupplementalFinancialInformationDetails",
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATIONRestrictedCashReconciliation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RestrictedStockUnitsRSUMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Share instrument which is convertible to stock or an equivalent amount of cash, after a specified period of time or when specified performance conditions are met.",
        "label": "Restricted Stock Units (RSUs) [Member]",
        "terseLabel": "Service Based Units (SBUs)"
       }
      }
     },
     "localname": "RestrictedStockUnitsRSUMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RetainedEarningsAccumulatedDeficit": {
     "auth_ref": [
      "r44",
      "r385",
      "r542",
      "r693",
      "r764",
      "r784",
      "r789"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 2.0,
       "parentTag": "us-gaap_StockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
        "label": "Retained Earnings (Accumulated Deficit)",
        "terseLabel": "Retained earnings"
       }
      }
     },
     "localname": "RetainedEarningsAccumulatedDeficit",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RetainedEarningsMember": {
     "auth_ref": [
      "r2",
      "r160",
      "r161",
      "r162",
      "r167",
      "r178",
      "r181",
      "r263",
      "r538",
      "r539",
      "r540",
      "r575",
      "r576",
      "r637",
      "r780",
      "r782"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The cumulative amount of the reporting entity's undistributed earnings or deficit.",
        "label": "Retained Earnings [Member]",
        "terseLabel": "Retained Earnings"
       }
      }
     },
     "localname": "RetainedEarningsMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RetirementPlanNameAxis": {
     "auth_ref": [
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r449",
      "r450",
      "r451",
      "r452",
      "r453",
      "r454",
      "r455",
      "r456",
      "r457",
      "r458",
      "r459",
      "r460",
      "r461",
      "r463",
      "r464",
      "r465",
      "r466",
      "r468",
      "r471",
      "r475",
      "r476",
      "r477",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r501",
      "r502",
      "r503",
      "r504",
      "r505",
      "r506",
      "r507",
      "r508",
      "r509",
      "r514"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by name of plan designed to provide retirement benefits. Includes, but is not limited to, legal name of defined benefit and defined contribution plans.",
        "label": "Retirement Plan Name [Axis]",
        "terseLabel": "Retirement Plan Name [Axis]"
       }
      }
     },
     "localname": "RetirementPlanNameAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RetirementPlanNameDomain": {
     "auth_ref": [
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r449",
      "r450",
      "r451",
      "r452",
      "r453",
      "r454",
      "r455",
      "r456",
      "r457",
      "r458",
      "r459",
      "r460",
      "r461",
      "r463",
      "r464",
      "r465",
      "r466",
      "r468",
      "r471",
      "r475",
      "r476",
      "r477",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r501",
      "r502",
      "r503",
      "r504",
      "r505",
      "r506",
      "r507",
      "r508",
      "r509",
      "r514"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Name of plan designed to provide retirement benefits. Includes, but is not limited to, legal name of defined benefit and defined contribution plans.",
        "label": "Retirement Plan Name [Domain]",
        "terseLabel": "Retirement Plan Name [Domain]"
       }
      }
     },
     "localname": "RetirementPlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RetirementPlanNameOtherMember": {
     "auth_ref": [
      "r475"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Retirement plan not separately disclosed by name classified as other.",
        "label": "Retirement Plan Name, Other [Member]",
        "terseLabel": "Retirement Plan Name, Other"
       }
      }
     },
     "localname": "RetirementPlanNameOtherMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RetirementPlanTypeAxis": {
     "auth_ref": [
      "r413",
      "r414",
      "r415",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r449",
      "r450",
      "r451",
      "r452",
      "r453",
      "r454",
      "r455",
      "r456",
      "r457",
      "r458",
      "r459",
      "r460",
      "r461",
      "r463",
      "r465",
      "r466",
      "r468",
      "r471",
      "r475",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r490",
      "r491",
      "r495",
      "r496",
      "r497",
      "r498",
      "r499",
      "r500",
      "r510",
      "r511",
      "r512",
      "r513"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by type of retirement benefit plan. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.",
        "label": "Retirement Plan Type [Axis]",
        "terseLabel": "Retirement Plan Type [Axis]"
       }
      }
     },
     "localname": "RetirementPlanTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RetirementPlanTypeDomain": {
     "auth_ref": [
      "r413",
      "r414",
      "r415",
      "r418",
      "r419",
      "r420",
      "r421",
      "r422",
      "r423",
      "r424",
      "r425",
      "r426",
      "r427",
      "r428",
      "r429",
      "r430",
      "r431",
      "r432",
      "r433",
      "r434",
      "r435",
      "r436",
      "r437",
      "r438",
      "r440",
      "r441",
      "r443",
      "r444",
      "r445",
      "r446",
      "r447",
      "r448",
      "r449",
      "r450",
      "r451",
      "r452",
      "r453",
      "r454",
      "r455",
      "r456",
      "r457",
      "r458",
      "r459",
      "r460",
      "r461",
      "r463",
      "r465",
      "r466",
      "r468",
      "r471",
      "r475",
      "r480",
      "r481",
      "r482",
      "r483",
      "r484",
      "r485",
      "r486",
      "r487",
      "r488",
      "r489",
      "r490",
      "r491",
      "r495",
      "r496",
      "r497",
      "r498",
      "r499",
      "r500",
      "r510",
      "r511",
      "r512",
      "r513"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Type of plan designed to provide participants with retirement benefits. Includes, but is not limited to, retirement benefit arrangement for defined benefit pension and other postretirement plans, retirement benefit arrangement for defined contribution pension and other postretirement plans, and special and contractual termination benefits payable upon retirement.",
        "label": "Retirement Plan Type [Domain]",
        "terseLabel": "Retirement Plan Type [Domain]"
       }
      }
     },
     "localname": "RetirementPlanTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenue from Contract with Customer [Abstract]",
        "terseLabel": "Revenue from Contract with Customer [Abstract]"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax": {
     "auth_ref": [
      "r211",
      "r212",
      "r221",
      "r227",
      "r228",
      "r235",
      "r236",
      "r238",
      "r397",
      "r398",
      "r729"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 1.0,
       "parentTag": "us-gaap_Revenues",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.",
        "label": "Revenue from Contract with Customer, Excluding Assessed Tax",
        "terseLabel": "Transmission services",
        "verboseLabel": "Transmission and other services"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerExcludingAssessedTax",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/REVENUEDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueFromContractWithCustomerTextBlock": {
     "auth_ref": [
      "r389",
      "r390",
      "r391",
      "r392",
      "r393",
      "r394",
      "r395",
      "r396",
      "r400",
      "r412"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.",
        "label": "Revenue from Contract with Customer [Text Block]",
        "terseLabel": "Revenue from Contract with Customer"
       }
      }
     },
     "localname": "RevenueFromContractWithCustomerTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REVENUE"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_RevenueFromRelatedParties": {
     "auth_ref": [
      "r106",
      "r320",
      "r322",
      "r323",
      "r329",
      "r330",
      "r331",
      "r792"
     ],
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.",
        "label": "Revenue from Related Parties",
        "terseLabel": "Revenue from Related Parties"
       }
      }
     },
     "localname": "RevenueFromRelatedParties",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenueRecognitionPolicyTextBlock": {
     "auth_ref": [
      "r145",
      "r146"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources.",
        "label": "Revenue [Policy Text Block]",
        "terseLabel": "Revenues"
       }
      }
     },
     "localname": "RevenueRecognitionPolicyTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REVENUEPolicies",
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_Revenues": {
     "auth_ref": [
      "r99",
      "r151",
      "r211",
      "r212",
      "r221",
      "r227",
      "r228",
      "r235",
      "r236",
      "r238",
      "r259",
      "r317",
      "r318",
      "r319",
      "r322",
      "r323",
      "r324",
      "r326",
      "r328",
      "r330",
      "r331",
      "r651",
      "r753"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 1.0,
       "parentTag": "us-gaap_OperatingIncomeLoss",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).",
        "label": "Revenues",
        "terseLabel": "OPERATING REVENUES",
        "totalLabel": "OPERATING REVENUES",
        "verboseLabel": "Operating revenues"
       }
      }
     },
     "localname": "Revenues",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/REGULATORYMATTERSAdditionalInformationDetails",
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails",
      "http://www.itctransco.com/role/SUPPLEMENTARYQUARTERLYFINANCIALINFORMATIONUnauditedDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_RevenuesAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Revenues [Abstract]",
        "terseLabel": "OPERATING REVENUES"
       }
      }
     },
     "localname": "RevenuesAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_RevolvingCreditFacilityMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Arrangement in which loan proceeds can continuously be obtained following repayments, but the total amount borrowed cannot exceed a specified maximum amount.",
        "label": "Revolving Credit Facility [Member]",
        "terseLabel": "Revolving Credit Facility"
       }
      }
     },
     "localname": "RevolvingCreditFacilityMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability": {
     "auth_ref": [
      "r678",
      "r679"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of increase in right-of-use asset obtained in exchange for operating lease liability.",
        "label": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability",
        "terseLabel": "Right-of-Use Asset Obtained in Exchange for Operating Lease Liability"
       }
      }
     },
     "localname": "RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SUPPLEMENTALFINANCIALINFORMATIONSupplementalCashFlowInformation"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SalesRevenueNetMember": {
     "auth_ref": [
      "r203",
      "r238"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Revenue from sale of product and rendering of service and other sources of income, when it serves as benchmark in concentration of risk calculation.",
        "label": "Revenue Benchmark [Member]",
        "terseLabel": "Billed Revenues"
       }
      }
     },
     "localname": "SalesRevenueNetMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/COMMITMENTSANDCONTINGENTLIABILITIESDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable": {
     "auth_ref": [
      "r72"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule itemizing specific types of trade accounts and notes receivable, and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.",
        "label": "Schedule of Accounts, Notes, Loans and Financing Receivable [Table]",
        "terseLabel": "Schedule of Accounts, Notes, Loans and Financing Receivable [Table]"
       }
      }
     },
     "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock": {
     "auth_ref": [
      "r72"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.",
        "label": "Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]",
        "terseLabel": "Schedule of Accounts, Notes, Loans and Financing Receivable"
       }
      }
     },
     "localname": "ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLETables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock": {
     "auth_ref": [
      "r476",
      "r477",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of benefit obligation and plan assets of defined benefit plan with accumulated benefit obligation in excess of plan assets.",
        "label": "Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]",
        "terseLabel": "Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock": {
     "auth_ref": [
      "r85",
      "r669",
      "r670"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the components of accumulated other comprehensive income (loss).",
        "label": "Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]",
        "terseLabel": "Changes in Accumulated Other Comprehensive Income"
       }
      }
     },
     "localname": "ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock": {
     "auth_ref": [
      "r439"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans.  This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall.",
        "label": "Schedule of Allocation of Plan Assets [Table Text Block]",
        "terseLabel": "Schedule of Allocation of Plan Assets"
       }
      }
     },
     "localname": "ScheduleOfAllocationOfPlanAssetsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfAssumptionsUsedTableTextBlock": {
     "auth_ref": [
      "r462"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate.",
        "label": "Defined Benefit Plan, Assumptions [Table Text Block]",
        "terseLabel": "Assumptions Used"
       }
      }
     },
     "localname": "ScheduleOfAssumptionsUsedTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock": {
     "auth_ref": [
      "r476",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of benefit obligation and plan assets for defined benefit pension plan with projected benefit obligation in excess of plan assets.",
        "label": "Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]",
        "terseLabel": "Defined Benefit Plan, Plan with Projected Benefit Obligation in Excess of Plan Assets [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable": {
     "auth_ref": [
      "r593",
      "r594"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule reflecting each material business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities.",
        "label": "Schedule of Business Acquisitions, by Acquisition [Table]",
        "terseLabel": "Schedule of Business Acquisitions, by Acquisition [Table]"
       }
      }
     },
     "localname": "ScheduleOfBusinessAcquisitionsByAcquisitionTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GENERALDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of supplemental cash flow information for the periods presented.",
        "label": "Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]",
        "terseLabel": "Supplementary Cash Flow Information"
       }
      }
     },
     "localname": "ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATION"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock": {
     "auth_ref": [
      "r571"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.",
        "label": "Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]",
        "terseLabel": "Components of Income Tax Provision"
       }
      }
     },
     "localname": "ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDebtTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation.",
        "label": "Schedule of Debt [Table Text Block]",
        "terseLabel": "Schedule of Debt"
       }
      }
     },
     "localname": "ScheduleOfDebtTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock": {
     "auth_ref": [
      "r563"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.",
        "label": "Schedule of Deferred Tax Assets and Liabilities [Table Text Block]",
        "terseLabel": "Deferred Tax Assets and Liabilities"
       }
      }
     },
     "localname": "ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable": {
     "auth_ref": [
      "r474",
      "r475",
      "r478",
      "r479",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosures about an individual defined benefit pension plan or an other postretirement defined benefit plan. It may be appropriate to group certain similar plans.  Also includes schedule for fair value of plan assets by major categories of plan assets by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets or liabilities (Level 1), Significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).",
        "label": "Schedule of Defined Benefit Plans Disclosures [Table]",
        "terseLabel": "Schedule of Defined Benefit Plans Disclosures [Table]"
       }
      }
     },
     "localname": "ScheduleOfDefinedBenefitPlansDisclosuresTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAssumptionsUsedDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTNetDefinedBenefitCostComponentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTProjectedBenefitPaymentsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTScheduleofPlanAssetsDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTextBlock": {
     "auth_ref": [
      "r474",
      "r475",
      "r478",
      "r479",
      "r490"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans.",
        "label": "Schedule of Defined Benefit Plans Disclosures [Table Text Block]",
        "terseLabel": "Defined Benefit Plans Disclosures"
       }
      }
     },
     "localname": "ScheduleOfDefinedBenefitPlansDisclosuresTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock": {
     "auth_ref": [
      "r553"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.",
        "label": "Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]",
        "terseLabel": "Income Tax Reconciliation"
       }
      }
     },
     "localname": "ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/INCOMETAXESTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable": {
     "auth_ref": [
      "r519",
      "r529",
      "r543"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about amount recognized for award under share-based payment arrangement. Includes, but is not limited to, amount expensed in statement of income or comprehensive income, amount capitalized in statement of financial position, and corresponding reporting line item in financial statements.",
        "label": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]",
        "terseLabel": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table]"
       }
      }
     },
     "localname": "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock": {
     "auth_ref": [
      "r519",
      "r529",
      "r543"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.",
        "label": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]",
        "terseLabel": "Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock": {
     "auth_ref": [
      "r450"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter.",
        "label": "Schedule of Expected Benefit Payments [Table Text Block]",
        "terseLabel": "Projected Benefit Payments"
       }
      }
     },
     "localname": "ScheduleOfExpectedBenefitPaymentsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock": {
     "auth_ref": [
      "r640",
      "r641"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).",
        "label": "Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]",
        "terseLabel": "Assets and Liabilities at Fair Value Subject to Three-Tier Hierarchy"
       }
      }
     },
     "localname": "ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfInterestRateDerivativesTableTextBlock": {
     "auth_ref": [
      "r618"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of interest rate derivatives, including, but not limited to, the fair value of the derivatives, statement of financial position location, and statement of financial performance location of these instruments.",
        "label": "Schedule of Interest Rate Derivatives [Table Text Block]",
        "terseLabel": "Schedule of Interest Rate Derivatives"
       }
      }
     },
     "localname": "ScheduleOfInterestRateDerivativesTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfJointlyOwnedUtilityPlantsTextBlock": {
     "auth_ref": [
      "r811"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of proportionate interests in jointly owned utility plants. Includes the amount of plants in service, the accumulated provision for depreciation (if available), the amount of plants under construction, and the proportionate share. The amounts presented may be further subdivided to show amounts applicable to plant subcategories (for example, production, transmission, distribution). Includes statements that the amounts represent the utility's share in each joint plant and that it must provide its own financing. Information concerning two or more generating plants on the same site may be combined. States that the utility's share of direct expenses of the joint plants is included in the corresponding operating expenses on its income statement (for example, fuel, maintenance of plant, other operating expense). If the share of direct expenses is charged to purchased power, then disclose the amount so charged and the proportionate amounts charged to specific operating expenses on the records maintained for the joint plants.",
        "label": "Schedule of Jointly Owned Utility Plants [Table Text Block]",
        "terseLabel": "Schedule of Jointly Owned Utility Plant"
       }
      }
     },
     "localname": "ScheduleOfJointlyOwnedUtilityPlantsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/JOINTLYOWNEDUTILITYPLANTCOORDINATEDSERVICESTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfLineOfCreditFacilitiesTextBlock": {
     "auth_ref": [
      "r60"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of short-term or long-term contractual arrangements with lenders, including letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line.",
        "label": "Schedule of Line of Credit Facilities [Table Text Block]",
        "terseLabel": "Schedule of Revolving Credit Agreements"
       }
      }
     },
     "localname": "ScheduleOfLineOfCreditFacilitiesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock": {
     "auth_ref": [
      "r314"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of maturity and sinking fund requirement for long-term debt.",
        "label": "Schedule of Maturities of Long-term Debt [Table Text Block]",
        "terseLabel": "Schedule of Maturities of Debt"
       }
      }
     },
     "localname": "ScheduleOfMaturitiesOfLongTermDebtTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfNetBenefitCostsTableTextBlock": {
     "auth_ref": [
      "r452"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments.",
        "label": "Schedule of Net Benefit Costs [Table Text Block]",
        "terseLabel": "Net Defined Benefit Cost Components"
       }
      }
     },
     "localname": "ScheduleOfNetBenefitCostsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfPropertyPlantAndEquipmentTable": {
     "auth_ref": [
      "r56",
      "r299"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Property, Plant and Equipment [Table]",
        "terseLabel": "Schedule of Property, Plant and Equipment [Table]"
       }
      }
     },
     "localname": "ScheduleOfPropertyPlantAndEquipmentTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock": {
     "auth_ref": [
      "r54",
      "r807"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of public utility physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, deprecation expense and method used, including composite depreciation, and accumulated deprecation.",
        "label": "Public Utility Property, Plant, and Equipment [Table Text Block]",
        "terseLabel": "Schedule of Public Utility Property, Plant, and Equipment"
       }
      }
     },
     "localname": "ScheduleOfPublicUtilityPropertyPlantAndEquipmentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for detailed information about regulatory assets and liabilities, including current and noncurrent assets created when regulatory agencies permit the deferral of costs to the balance sheet that would otherwise be required to appear on the company's income statement and would be charged against current expenses or revenues, as well as current and noncurrent liabilities created when regulatory agencies permit.",
        "label": "Schedule of Regulatory Assets and Liabilities [Text Block]",
        "terseLabel": "REGULATORY ASSETS AND LIABILITIES"
       }
      }
     },
     "localname": "ScheduleOfRegulatoryAssetsAndLiabilitiesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIES"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRegulatoryAssetsTable": {
     "auth_ref": [
      "r808",
      "r809",
      "r813"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A table of assets that are created when regulatory agencies permit public utilities to defer certain costs that are included in rate-setting to the balance sheet.",
        "label": "Schedule of Regulatory Assets [Table]",
        "terseLabel": "Schedule of Regulatory Assets [Table]"
       }
      }
     },
     "localname": "ScheduleOfRegulatoryAssetsTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryAssetsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfRegulatoryAssetsTextBlock": {
     "auth_ref": [
      "r808",
      "r809",
      "r813"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of assets that are created when regulatory agencies permit public utilities to defer certain costs included in rate-setting to the balance sheet.",
        "label": "Schedule of Regulatory Assets [Table Text Block]",
        "terseLabel": "Schedule of Regulatory Assets"
       }
      }
     },
     "localname": "ScheduleOfRegulatoryAssetsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRegulatoryLiabilitiesTable": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A table of liabilities that are created when regulatory agencies permit public utilities to defer recognition of certain revenues included in rate-setting.",
        "label": "Schedule of Regulatory Liabilities [Table]",
        "terseLabel": "Schedule of Regulatory Liabilities [Table]"
       }
      }
     },
     "localname": "ScheduleOfRegulatoryLiabilitiesTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESAdditionalInformationDetails",
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESRegulatoryLiabilitiesDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfRegulatoryLiabilitiesTextBlock": {
     "auth_ref": [
      "r812"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of regulatory liabilities. Detailed information about liabilities that result from rate actions of a regulator. Rate actions of a regulator can impose a liability on a regulated enterprise resulting in a regulatory liability.",
        "label": "Schedule of Regulatory Liabilities [Table Text Block]",
        "terseLabel": "Schedule of Regulatory Liabilities"
       }
      }
     },
     "localname": "ScheduleOfRegulatoryLiabilitiesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/REGULATORYASSETSANDLIABILITIESTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable": {
     "auth_ref": [
      "r686",
      "r687"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule of quantitative and qualitative information pertaining to related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.",
        "label": "Schedule of Related Party Transactions, by Related Party [Table]",
        "terseLabel": "Schedule of Related Party Transactions, by Related Party [Table]"
       }
      }
     },
     "localname": "ScheduleOfRelatedPartyTransactionsByRelatedPartyTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates.",
        "label": "Schedule of Related Party Transactions [Table Text Block]",
        "terseLabel": "Schedule of Related Party Transactions [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfRelatedPartyTransactionsTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTRelatedpartyTransactionsDetails",
      "http://www.itctransco.com/role/SECScheduleArticle1204CondensedFinancialInformationofRegistrantTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfRestrictedCashAndCashEquivalentsTextBlock": {
     "auth_ref": [
      "r21",
      "r140",
      "r737",
      "r762"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of cash and cash equivalents restricted as to withdrawal or usage.",
        "label": "Restrictions on Cash and Cash Equivalents [Table Text Block]",
        "terseLabel": "Restrictions on Cash and Cash Equivalents"
       }
      }
     },
     "localname": "ScheduleOfRestrictedCashAndCashEquivalentsTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SUPPLEMENTALFIANNCIALINFORMATION"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable": {
     "auth_ref": [
      "r217",
      "r219",
      "r225",
      "r284"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "A table disclosing the profit or loss and total assets for each reportable segment of the entity. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.",
        "label": "Schedule of Segment Reporting Information, by Segment [Table]",
        "terseLabel": "Schedule of Segment Reporting Information, by Segment [Table]"
       }
      }
     },
     "localname": "ScheduleOfSegmentReportingInformationBySegmentTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock": {
     "auth_ref": [
      "r217",
      "r219",
      "r225",
      "r284"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.",
        "label": "Schedule of Segment Reporting Information, by Segment [Table Text Block]",
        "terseLabel": "Schedule of Financial Information by Reportable Segment"
       }
      }
     },
     "localname": "ScheduleOfSegmentReportingInformationBySegmentTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SEGMENTINFORMATIONTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock": {
     "auth_ref": [
      "r527"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding performance-based awards that are fully vested and expected to vest. Includes, but is not limited to, unvested awards for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
        "label": "Share-based Compensation Arrangements by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest [Table Text Block]",
        "terseLabel": "Share-based Compensation Arrangements by Share-based Payment Award, Performance-Based Units, Vested and Expected to Vest [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardPerformanceBasedUnitsVestedAndExpectedToVestTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnitsVestedAndExpectedToVestTableTextBlock": {
     "auth_ref": [
      "r527"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding restricted stock units that are fully vested and expected to vest. Includes, but is not limited to, unvested restricted stock units for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.",
        "label": "Share-based Compensation Arrangements by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block]",
        "terseLabel": "Share-based Compensation Arrangements by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block]"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnitsVestedAndExpectedToVestTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable": {
     "auth_ref": [
      "r520",
      "r533"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of information about share-based payment arrangement.",
        "label": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]",
        "terseLabel": "Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]"
       }
      }
     },
     "localname": "ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock": {
     "auth_ref": [
      "r290"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.",
        "label": "Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]",
        "terseLabel": "Schedule of Expected Amortization Expense"
       }
      }
     },
     "localname": "ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/GOODWILLANDINTANGIBLEASSETSTables"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SecuredDebtMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Collateralized debt obligation backed by, for example, but not limited to, pledge, mortgage or other lien on the entity's assets.",
        "label": "Secured Debt [Member]",
        "terseLabel": "Secured Debt"
       }
      }
     },
     "localname": "SecuredDebtMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SegmentReportingAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Segment Reporting [Abstract]",
        "terseLabel": "Segment Reporting [Abstract]"
       }
      }
     },
     "localname": "SegmentReportingAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SegmentReportingDisclosureTextBlock": {
     "auth_ref": [
      "r208",
      "r209",
      "r210",
      "r217",
      "r220",
      "r226",
      "r230",
      "r231",
      "r232",
      "r233",
      "r235",
      "r237",
      "r238",
      "r239"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.",
        "label": "Segment Reporting Disclosure [Text Block]",
        "terseLabel": "SEGMENT INFORMATION"
       }
      }
     },
     "localname": "SegmentReportingDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SEGMENTINFORMATION"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SegmentReportingInformationLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Segment Reporting Information [Line Items]",
        "terseLabel": "Segment Reporting Information"
       }
      }
     },
     "localname": "SegmentReportingInformationLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SEGMENTINFORMATIONDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SelectedQuarterlyFinancialInformationAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Selected Quarterly Financial Information [Abstract]",
        "terseLabel": "Selected Quarterly Financial Information [Abstract]"
       }
      }
     },
     "localname": "SelectedQuarterlyFinancialInformationAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber": {
     "auth_ref": [
      "r525"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number",
        "periodEndLabel": "PBUs or SBUs at December 31, 2019",
        "periodStartLabel": "PBUs or SBUs at December 31, 2018",
        "terseLabel": "Share-based payment awards outstanding, equity instruments other than options"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod": {
     "auth_ref": [
      "r526"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period",
        "negatedTerseLabel": "Vested",
        "terseLabel": "Vested"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]",
        "terseLabel": "Share-based Compensation Arrangement by Share-based Payment Award [Line Items]"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures": {
     "auth_ref": [
      "r524"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures",
        "negatedTerseLabel": "Forfeited"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted": {
     "auth_ref": [
      "r523"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Net number of non-option equity instruments granted to participants.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted",
        "terseLabel": "Granted"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain": {
     "auth_ref": [
      "r518",
      "r521"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Award under share-based payment arrangement.",
        "label": "Award Type [Domain]",
        "terseLabel": "Award Type [Domain]"
       }
      }
     },
     "localname": "ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy": {
     "auth_ref": [
      "r520",
      "r522"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for award under share-based payment arrangement. Includes, but is not limited to, methodology and assumption used in measuring cost.",
        "label": "Share-based Payment Arrangement [Policy Text Block]",
        "terseLabel": "Share-based Payment and Employee Share Purchase Plan"
       }
      }
     },
     "localname": "ShareBasedCompensationOptionAndIncentivePlansPolicy",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1": {
     "auth_ref": [
      "r529"
     ],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of cost expensed and capitalized for award under share-based payment arrangement.",
        "label": "Share-based Payment Arrangement, Expensed and Capitalized, Amount",
        "terseLabel": "Total share-based compensation"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardCompensationCost1",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAllocationofRecognizedPeriodCostsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Intrinsic value of outstanding award under share-based payment arrangement. Excludes share and unit options.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding",
        "terseLabel": "Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANAdditionalInformationDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails",
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANServiceBasedUnitsDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Number of options vested.",
        "label": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares",
        "negatedTerseLabel": "Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares"
       }
      }
     },
     "localname": "SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANPerformanceBasedUnitsDetails"
     ],
     "xbrltype": "sharesItemType"
    },
    "us-gaap_ShortTermDebtWeightedAverageInterestRate": {
     "auth_ref": [
      "r59"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Weighted average interest rate of short-term debt outstanding calculated at point in time.",
        "label": "Short-term Debt, Weighted Average Interest Rate, at Point in Time",
        "terseLabel": "Short-term Debt, Weighted Average Interest Rate, at Point in Time"
       }
      }
     },
     "localname": "ShortTermDebtWeightedAverageInterestRate",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "percentItemType"
    },
    "us-gaap_SignificantAccountingPoliciesTextBlock": {
     "auth_ref": [
      "r142",
      "r159"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for all significant accounting policies of the reporting entity.",
        "label": "Significant Accounting Policies [Text Block]",
        "terseLabel": "SIGNIFICANT ACCOUNTING POLICIES"
       }
      }
     },
     "localname": "SignificantAccountingPoliciesTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIES"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_StatementClassOfStockAxis": {
     "auth_ref": [
      "r39",
      "r40",
      "r41",
      "r148",
      "r151",
      "r185",
      "r186",
      "r187",
      "r189",
      "r190",
      "r195",
      "r196",
      "r197",
      "r259",
      "r317",
      "r322",
      "r323",
      "r324",
      "r330",
      "r331",
      "r369",
      "r370",
      "r373",
      "r377",
      "r384",
      "r651",
      "r822"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by the different classes of stock of the entity.",
        "label": "Class of Stock [Axis]",
        "terseLabel": "Class of Stock [Axis]"
       }
      }
     },
     "localname": "StatementClassOfStockAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementEquityComponentsAxis": {
     "auth_ref": [
      "r2",
      "r69",
      "r94",
      "r95",
      "r96",
      "r160",
      "r161",
      "r162",
      "r167",
      "r178",
      "r181",
      "r194",
      "r263",
      "r384",
      "r385",
      "r538",
      "r539",
      "r540",
      "r575",
      "r576",
      "r637",
      "r664",
      "r665",
      "r666",
      "r667",
      "r668",
      "r670",
      "r780",
      "r781",
      "r782",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by component of equity.",
        "label": "Equity Components [Axis]",
        "terseLabel": "Equity Components [Axis]"
       }
      }
     },
     "localname": "StatementEquityComponentsAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementLineItems": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.",
        "label": "Statement [Line Items]",
        "terseLabel": "Statement [Line Items]"
       }
      }
     },
     "localname": "StatementLineItems",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfCashFlowsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of Cash Flows [Abstract]",
        "terseLabel": "Statement of Cash Flows [Abstract]"
       }
      }
     },
     "localname": "StatementOfCashFlowsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfFinancialPositionAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of Financial Position [Abstract]",
        "terseLabel": "Statement of Financial Position [Abstract]"
       }
      }
     },
     "localname": "StatementOfFinancialPositionAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementOfStockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Statement of Stockholders' Equity [Abstract]",
        "terseLabel": "Statement of Stockholders' Equity [Abstract]"
       }
      }
     },
     "localname": "StatementOfStockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_StatementTable": {
     "auth_ref": [
      "r160",
      "r161",
      "r162",
      "r194",
      "r729"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Schedule reflecting a Statement of Income, Statement of Cash Flows, Statement of Financial Position, Statement of Shareholders' Equity and Other Comprehensive Income, or other statement as needed.",
        "label": "Statement [Table]",
        "terseLabel": "Statement [Table]"
       }
      }
     },
     "localname": "StatementTable",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITIONParentheticals",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockholdersEquity": {
     "auth_ref": [
      "r41",
      "r46",
      "r47",
      "r151",
      "r243",
      "r259",
      "r651",
      "r693"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 8.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_LiabilitiesAndStockholdersEquity",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.",
        "label": "Stockholders' Equity Attributable to Parent",
        "periodEndLabel": "Stockholder's equity",
        "periodStartLabel": "Stockholder's equity",
        "terseLabel": "Total stockholder\u2019s equity",
        "totalLabel": "Total stockholder\u2019s equity"
       }
      }
     },
     "localname": "StockholdersEquity",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINSTOCKHOLDERSEQUITY",
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_StockholdersEquityAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Stockholders' Equity Attributable to Parent [Abstract]",
        "terseLabel": "STOCKHOLDER\u2019S EQUITY"
       }
      }
     },
     "localname": "StockholdersEquityAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofFinancialPositionParentCompanyOnlyDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_StockholdersEquityNoteDisclosureTextBlock": {
     "auth_ref": [
      "r149",
      "r370",
      "r372",
      "r373",
      "r374",
      "r375",
      "r376",
      "r377",
      "r378",
      "r379",
      "r380",
      "r381",
      "r383",
      "r385",
      "r386"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.",
        "label": "Stockholders' Equity Note Disclosure [Text Block]",
        "terseLabel": "STOCKHOLDERS' EQUITY"
       }
      }
     },
     "localname": "StockholdersEquityNoteDisclosureTextBlock",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITY"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_SubsequentEventMember": {
     "auth_ref": [
      "r671",
      "r694"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Identifies event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event [Member]",
        "terseLabel": "Subsequent Event"
       }
      }
     },
     "localname": "SubsequentEventMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SubsequentEventTypeAxis": {
     "auth_ref": [
      "r671",
      "r694"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event Type [Axis]",
        "terseLabel": "Subsequent Event Type [Axis]"
       }
      }
     },
     "localname": "SubsequentEventTypeAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_SubsequentEventTypeDomain": {
     "auth_ref": [
      "r671",
      "r694"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Event that occurred after the balance sheet date but before financial statements are issued or available to be issued.",
        "label": "Subsequent Event Type [Domain]",
        "terseLabel": "Subsequent Event Type [Domain]"
       }
      }
     },
     "localname": "SubsequentEventTypeDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails",
      "http://www.itctransco.com/role/RELATEDPARTYTRANSACTIONSDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_SupplementalCashFlowElementsAbstract": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "label": "Supplemental Cash Flow Elements [Abstract]",
        "terseLabel": "Supplemental Cash Flow Elements [Abstract]"
       }
      }
     },
     "localname": "SupplementalCashFlowElementsAbstract",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "xbrltype": "stringItemType"
    },
    "us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Plan designed to provide limited group of employees with supplemental retirement benefits, in addition to other pension benefits. Includes, but is not limited to, defined benefit and defined contribution plans.",
        "label": "Supplemental Employee Retirement Plan [Member]",
        "terseLabel": "Supplemental Benefit Plans"
       }
      }
     },
     "localname": "SupplementalEmployeeRetirementPlanDefinedBenefitMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTAdditionalInformationDetails",
      "http://www.itctransco.com/role/RETIREMENTBENEFITSANDASSETSHELDINTRUSTDefinedBenefitPlansDisclosuresDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TaxesExcludingIncomeAndExciseTaxes": {
     "auth_ref": [
      "r104"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 4.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      },
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails": {
       "order": 1.0,
       "parentTag": "us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments",
       "weight": -1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "All taxes not related to income of the entity or excise or sales taxes levied on the revenue of the entity that are not reported elsewhere. These taxes could include production, real estate, personal property, and pump tax.",
        "label": "Taxes, Miscellaneous",
        "negatedTerseLabel": "Taxes other than income taxes",
        "terseLabel": "Taxes other than income taxes"
       }
      }
     },
     "localname": "TaxesExcludingIncomeAndExciseTaxes",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME",
      "http://www.itctransco.com/role/SCHEDULEICONDENSEDFINANCIALINFORMATIONOFREGISTRANTCondensedStatementsofComprehensiveIncomeParentCompanyOnlyDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TaxesPayableCurrent": {
     "auth_ref": [
      "r61"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION": {
       "order": 4.0,
       "parentTag": "us-gaap_LiabilitiesCurrent",
       "weight": 1.0
      }
     },
     "crdr": "credit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Carrying value as of the balance sheet date of obligations incurred and payable for statutory income, sales, use, payroll, excise, real, property and other taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).",
        "label": "Taxes Payable, Current",
        "terseLabel": "Accrued taxes"
       }
      }
     },
     "localname": "TaxesPayableCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFFINANCIALPOSITION"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_TradeAccountsReceivableMember": {
     "auth_ref": [
      "r70"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount due from customers or clients for goods or services  that have been delivered or sold in the normal course of business.",
        "label": "Trade Accounts Receivable [Member]",
        "terseLabel": "Trade accounts receivable"
       }
      }
     },
     "localname": "TradeAccountsReceivableMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain": {
     "auth_ref": [
      "r252",
      "r253",
      "r255",
      "r256",
      "r257",
      "r358",
      "r382",
      "r627",
      "r696",
      "r697",
      "r698",
      "r699",
      "r700",
      "r701",
      "r702",
      "r703",
      "r704",
      "r705",
      "r706",
      "r707",
      "r708",
      "r710",
      "r711",
      "r712",
      "r713",
      "r714",
      "r715",
      "r716",
      "r717",
      "r718",
      "r719",
      "r720",
      "r721",
      "r722",
      "r723",
      "r724",
      "r725",
      "r726",
      "r822",
      "r823",
      "r824",
      "r825",
      "r826",
      "r827",
      "r828"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Instrument or contract that imposes a contractual obligation to deliver cash or another financial instrument or to exchange other financial instruments on potentially unfavorable terms and conveys a contractual right to receive cash or another financial instrument or to exchange other financial instruments on potentially favorable terms.",
        "label": "Financial Instruments [Domain]",
        "terseLabel": "Financial Instruments [Domain]"
       }
      }
     },
     "localname": "TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/FAIRVALUEMEASUREMENTSAssetsMeasuredatFairValueSubjecttoThreeTierHierarchyDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_TypeOfAdoptionMember": {
     "auth_ref": [
      "r0",
      "r1",
      "r2",
      "r3",
      "r4",
      "r166",
      "r167",
      "r168",
      "r170",
      "r182",
      "r248",
      "r249",
      "r260",
      "r261",
      "r262",
      "r263",
      "r266",
      "r267",
      "r316",
      "r534",
      "r535",
      "r536",
      "r537",
      "r538",
      "r539",
      "r540",
      "r542",
      "r573",
      "r574",
      "r575",
      "r576",
      "r628",
      "r629",
      "r630",
      "r631",
      "r632",
      "r633",
      "r634",
      "r636",
      "r637",
      "r638",
      "r639",
      "r652",
      "r653",
      "r654",
      "r655",
      "r656",
      "r657",
      "r661",
      "r662",
      "r680",
      "r731",
      "r732",
      "r733",
      "r778",
      "r779",
      "r780",
      "r781",
      "r782",
      "r783",
      "r784",
      "r785",
      "r786",
      "r787",
      "r788",
      "r789",
      "r831",
      "r832",
      "r833",
      "r834",
      "r835"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amendment to accounting standards.",
        "label": "Accounting Standards Update [Domain]",
        "terseLabel": "Type of Adoption [Domain]"
       }
      }
     },
     "localname": "TypeOfAdoptionMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSRestrictedCashDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSServiceCostDetails",
      "http://www.itctransco.com/role/RECENTACCOUNTINGPRONOUNCEMENTSTables",
      "http://www.itctransco.com/role/STOCKHOLDERSEQUITYChangesinAccumulatedOtherComprehensiveIncomeDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_UnbilledReceivablesCurrent": {
     "auth_ref": [],
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.",
        "label": "Unbilled Receivables, Current",
        "terseLabel": "Unbilled accounts receivable"
       }
      }
     },
     "localname": "UnbilledReceivablesCurrent",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/ACCOUNTSRECEIVABLEDetails"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UnregulatedOperationMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Operation of entity not regulated by governmental or other regulatory organizations.",
        "label": "Unregulated Operation [Member]",
        "terseLabel": "ITC Holding and Other"
       }
      }
     },
     "localname": "UnregulatedOperationMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/PROPERTYPLANTANDEQUIPMENTDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_UnsecuredDebtMember": {
     "auth_ref": [],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Debt obligation not collateralized by pledge of, mortgage of or other lien on the entity's assets.",
        "label": "Unsecured Debt [Member]",
        "terseLabel": "Unsecured Debt"
       }
      }
     },
     "localname": "UnsecuredDebtMember",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/DEBTAdditionalInformationDetails",
      "http://www.itctransco.com/role/DEBTScheduleofDebtDetails"
     ],
     "xbrltype": "domainItemType"
    },
    "us-gaap_UseOfEstimates": {
     "auth_ref": [
      "r198",
      "r199",
      "r200",
      "r201",
      "r205",
      "r206",
      "r207"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.",
        "label": "Use of Estimates, Policy [Policy Text Block]",
        "terseLabel": "Use of Estimates"
       }
      }
     },
     "localname": "UseOfEstimates",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SIGNIFICANTACCOUNTINGPOLICIESPolicies"
     ],
     "xbrltype": "textBlockItemType"
    },
    "us-gaap_UtilitiesOperatingExpenseDepreciationAndAmortization": {
     "auth_ref": [
      "r108"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 3.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of operating expense for depreciation and amortization of regulated operation.",
        "label": "Utilities Operating Expense, Depreciation and Amortization",
        "terseLabel": "Depreciation and amortization"
       }
      }
     },
     "localname": "UtilitiesOperatingExpenseDepreciationAndAmortization",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations": {
     "auth_ref": [
      "r108"
     ],
     "calculation": {
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME": {
       "order": 1.0,
       "parentTag": "us-gaap_CostsAndExpenses",
       "weight": 1.0
      }
     },
     "crdr": "debit",
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation.",
        "label": "Utilities Operating Expense, Maintenance and Operations",
        "terseLabel": "Operation and maintenance"
       }
      }
     },
     "localname": "UtilitiesOperatingExpenseMaintenanceAndOperations",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/CONSOLIDATEDSTATEMENTSOFCOMPREHENSIVEINCOME"
     ],
     "xbrltype": "monetaryItemType"
    },
    "us-gaap_VestingAxis": {
     "auth_ref": [
      "r533"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Information by vesting schedule of award under share-based payment arrangement.",
        "label": "Vesting [Axis]",
        "terseLabel": "Vesting [Axis]"
       }
      }
     },
     "localname": "VestingAxis",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "stringItemType"
    },
    "us-gaap_VestingDomain": {
     "auth_ref": [
      "r533"
     ],
     "lang": {
      "en-us": {
       "role": {
        "documentation": "Vesting schedule of award under share-based payment arrangement.",
        "label": "Vesting [Domain]",
        "terseLabel": "Vesting [Domain]"
       }
      }
     },
     "localname": "VestingDomain",
     "nsuri": "http://fasb.org/us-gaap/2021-01-31",
     "presentation": [
      "http://www.itctransco.com/role/SHAREBASEDCOMPENSATIONANDEMPLOYEESHAREPURCHASEPLANTables"
     ],
     "xbrltype": "domainItemType"
    }
   },
   "unitCount": 4
  }
 },
 "std_ref": {
  "r0": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "105",
   "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695"
  },
  "r1": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "105",
   "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695"
  },
  "r10": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765"
  },
  "r100": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(12))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r101": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(20))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r102": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(21))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r103": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(24))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r104": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(4))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r105": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r106": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.1(e))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r107": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.13)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r108": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.2(b))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r109": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.3)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r11": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765"
  },
  "r110": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.4)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r111": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.7)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r112": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03.9)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r113": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585"
  },
  "r114": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3179-108585"
  },
  "r115": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585"
  },
  "r116": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585"
  },
  "r117": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585"
  },
  "r118": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3213-108585"
  },
  "r119": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585"
  },
  "r12": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765"
  },
  "r120": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3255-108585"
  },
  "r121": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585"
  },
  "r122": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585"
  },
  "r123": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585"
  },
  "r124": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3367-108585"
  },
  "r125": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21D",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=SL94080555-108585"
  },
  "r126": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "24",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3521-108585"
  },
  "r127": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585"
  },
  "r128": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585"
  },
  "r129": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3536-108585"
  },
  "r13": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6801-107765"
  },
  "r130": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585"
  },
  "r131": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585"
  },
  "r132": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585"
  },
  "r133": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3044-108585"
  },
  "r134": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123570139&loc=d3e3098-108585"
  },
  "r135": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4273-108586"
  },
  "r136": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4297-108586"
  },
  "r137": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586"
  },
  "r138": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586"
  },
  "r139": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586"
  },
  "r14": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765"
  },
  "r140": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "230",
   "URI": "http://asc.fasb.org/extlink&oid=123431023&loc=SL98516268-108586"
  },
  "r141": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "230",
   "URI": "http://asc.fasb.org/topic&trid=2134446"
  },
  "r142": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18726-107790"
  },
  "r143": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790"
  },
  "r144": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790"
  },
  "r145": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790"
  },
  "r146": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=123372394&loc=d3e18823-107790"
  },
  "r147": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(c))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r148": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(d))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r149": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(e)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r15": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6812-107765"
  },
  "r150": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(f))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r151": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(g)(1)(ii))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r152": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h)(1)(Note 1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r153": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h)(2))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r154": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(h))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r155": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(k)(1))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r156": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.4-08(n))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690"
  },
  "r157": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04(a))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690"
  },
  "r158": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.12-04(b))",
   "Topic": "235",
   "URI": "http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690"
  },
  "r159": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "235",
   "URI": "http://asc.fasb.org/topic&trid=2122369"
  },
  "r16": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6904-107765"
  },
  "r160": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "23",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21914-107793"
  },
  "r161": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "24",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21930-107793"
  },
  "r162": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21711-107793"
  },
  "r163": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124436220&loc=d3e21728-107793"
  },
  "r164": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r165": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(1)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r166": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(2)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r167": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(3)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r168": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(4)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r169": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r17": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6911-107765"
  },
  "r170": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r171": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22499-107794"
  },
  "r172": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794"
  },
  "r173": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22694-107794"
  },
  "r174": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=SL124452830-107794"
  },
  "r175": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22583-107794"
  },
  "r176": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22595-107794"
  },
  "r177": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794"
  },
  "r178": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794"
  },
  "r179": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22644-107794"
  },
  "r18": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6935-107765"
  },
  "r180": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22658-107794"
  },
  "r181": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=124431687&loc=d3e22663-107794"
  },
  "r182": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 11.M.Q2)",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=122038215&loc=d3e31137-122693"
  },
  "r183": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Topic": "250",
   "URI": "http://asc.fasb.org/extlink&oid=122038215&loc=SL108384541-122693"
  },
  "r184": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "250",
   "URI": "http://asc.fasb.org/topic&trid=2122394"
  },
  "r185": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1252-109256"
  },
  "r186": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e1278-109256"
  },
  "r187": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "55",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=d3e2626-109256"
  },
  "r188": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "60B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256"
  },
  "r189": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "60B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=125511455&loc=SL5780133-109256"
  },
  "r19": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e7018-107765"
  },
  "r190": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257"
  },
  "r191": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "260",
   "URI": "http://asc.fasb.org/extlink&oid=125512782&loc=d3e3842-109258"
  },
  "r192": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "270",
   "URI": "http://asc.fasb.org/extlink&oid=124437754&loc=d3e543-108305"
  },
  "r193": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "270",
   "URI": "http://asc.fasb.org/extlink&oid=124437754&loc=d3e639-108305"
  },
  "r194": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=125520817&loc=d3e70191-108054"
  },
  "r195": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=125520817&loc=d3e70229-108054"
  },
  "r196": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055"
  },
  "r197": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "272",
   "URI": "http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055"
  },
  "r198": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r199": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e5967-108592"
  },
  "r2": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "105",
   "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695"
  },
  "r20": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=6361739&loc=d3e7789-107766"
  },
  "r200": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6161-108592"
  },
  "r201": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6191-108592"
  },
  "r202": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592"
  },
  "r203": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592"
  },
  "r204": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592"
  },
  "r205": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6061-108592"
  },
  "r206": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6132-108592"
  },
  "r207": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "275",
   "URI": "http://asc.fasb.org/extlink&oid=99393423&loc=d3e6143-108592"
  },
  "r208": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8657-108599"
  },
  "r209": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599"
  },
  "r21": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r210": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8721-108599"
  },
  "r211": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599"
  },
  "r212": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599"
  },
  "r213": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599"
  },
  "r214": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599"
  },
  "r215": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599"
  },
  "r216": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599"
  },
  "r217": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8736-108599"
  },
  "r218": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599"
  },
  "r219": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8813-108599"
  },
  "r22": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(10))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r220": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "26",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8844-108599"
  },
  "r221": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599"
  },
  "r222": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599"
  },
  "r223": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599"
  },
  "r224": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599"
  },
  "r225": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "30",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599"
  },
  "r226": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "31",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8924-108599"
  },
  "r227": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599"
  },
  "r228": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599"
  },
  "r229": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599"
  },
  "r23": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(11))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r230": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599"
  },
  "r231": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599"
  },
  "r232": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "32",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599"
  },
  "r233": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "34",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8981-108599"
  },
  "r234": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e8475-108599"
  },
  "r235": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "40",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599"
  },
  "r236": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "41",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599"
  },
  "r237": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "41",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599"
  },
  "r238": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "42",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "280",
   "URI": "http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599"
  },
  "r239": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "280",
   "URI": "http://asc.fasb.org/topic&trid=2134510"
  },
  "r24": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(12))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r240": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522"
  },
  "r241": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=124259787&loc=d3e4531-111522"
  },
  "r242": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=123577603&loc=d3e5033-111524"
  },
  "r243": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 4.E)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=122038336&loc=d3e74512-122707"
  },
  "r244": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "SubTopic": "10",
   "Topic": "310",
   "URI": "http://asc.fasb.org/subtopic&trid=2196772"
  },
  "r245": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=84159169&loc=d3e10133-111534"
  },
  "r246": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=84159169&loc=d3e10149-111534"
  },
  "r247": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=84159169&loc=d3e10178-111534"
  },
  "r248": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513"
  },
  "r249": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513"
  },
  "r25": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(13)(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r250": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(d)(1)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513"
  },
  "r251": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(d)(2)",
   "Topic": "310",
   "URI": "http://asc.fasb.org/extlink&oid=124402435&loc=SL124402458-218513"
  },
  "r252": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=d3e27232-111563"
  },
  "r253": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "320",
   "URI": "http://asc.fasb.org/extlink&oid=123581744&loc=SL120269820-111563"
  },
  "r254": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "320",
   "URI": "http://asc.fasb.org/topic&trid=2196928"
  },
  "r255": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "321",
   "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714"
  },
  "r256": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "321",
   "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714"
  },
  "r257": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "321",
   "URI": "http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714"
  },
  "r258": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=109237563&loc=d3e33749-111570"
  },
  "r259": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "323",
   "URI": "http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571"
  },
  "r26": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(13))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r260": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r261": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r262": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r263": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r264": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r265": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(2)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r266": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(3)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r267": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(4)",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=122640432&loc=SL121648383-210437"
  },
  "r268": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447"
  },
  "r269": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447"
  },
  "r27": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(14))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r270": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919253-210447"
  },
  "r271": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447"
  },
  "r272": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447"
  },
  "r273": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455"
  },
  "r274": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922895-210455"
  },
  "r275": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455"
  },
  "r276": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "326",
   "URI": "http://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456"
  },
  "r277": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "330",
   "URI": "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4492-108314"
  },
  "r278": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "330",
   "URI": "http://asc.fasb.org/extlink&oid=116847112&loc=d3e4556-108314"
  },
  "r279": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "330",
   "URI": "http://asc.fasb.org/topic&trid=2126998"
  },
  "r28": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(15))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r280": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266"
  },
  "r281": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=99380562&loc=d3e13777-109266"
  },
  "r282": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975"
  },
  "r283": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r284": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267"
  },
  "r285": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=121556970&loc=d3e13854-109267"
  },
  "r286": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274"
  },
  "r287": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274"
  },
  "r288": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275"
  },
  "r289": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "((a)(1),(b))",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r29": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(16))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r290": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r291": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(1)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r292": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(2)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r293": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)(3)",
   "Topic": "350",
   "URI": "http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275"
  },
  "r294": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "350",
   "URI": "http://asc.fasb.org/topic&trid=2144416"
  },
  "r295": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226317&loc=d3e202-110218"
  },
  "r296": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r297": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r298": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r299": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229"
  },
  "r3": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "105",
   "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695"
  },
  "r30": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(17))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r300": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230"
  },
  "r301": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 5.CC)",
   "Topic": "360",
   "URI": "http://asc.fasb.org/extlink&oid=27011434&loc=d3e125687-122742"
  },
  "r302": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "360",
   "URI": "http://asc.fasb.org/topic&trid=2155823"
  },
  "r303": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r304": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "410",
   "URI": "http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849"
  },
  "r305": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "420",
   "URI": "http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869"
  },
  "r306": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "440",
   "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308"
  },
  "r307": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "440",
   "URI": "http://asc.fasb.org/extlink&oid=123406679&loc=d3e25336-109308"
  },
  "r308": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "440",
   "URI": "http://asc.fasb.org/topic&trid=2144648"
  },
  "r309": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349"
  },
  "r31": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(19)(a)(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r310": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "450",
   "URI": "http://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349"
  },
  "r311": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "450",
   "URI": "http://asc.fasb.org/topic&trid=2127136"
  },
  "r312": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "460",
   "URI": "http://asc.fasb.org/extlink&oid=123368208&loc=d3e12565-110249"
  },
  "r313": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=99376301&loc=SL5988623-112600"
  },
  "r314": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123465755&loc=d3e1835-112601"
  },
  "r315": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123465755&loc=SL6230698-112601"
  },
  "r316": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S65",
   "SubTopic": "10",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359872&loc=SL124427846-239511"
  },
  "r317": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-01(a)(4)(i))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756"
  },
  "r318": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-01(a)(4)(ii))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756"
  },
  "r319": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-01(a)(4)(iii)(A))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756"
  },
  "r32": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(19))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r320": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-01(a)(4)(iii)(B))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756"
  },
  "r321": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-01(a)(4)(iii))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756"
  },
  "r322": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-01(a)(4)(iv))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756"
  },
  "r323": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-01(a)(5))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442526-122756"
  },
  "r324": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(4)(i))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r325": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r326": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(4)(iii)(A))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r327": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r328": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(4)(iii)(B))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r329": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(4)(iii)(C))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r33": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(2))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r330": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(4)(iv))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r331": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.13-02(a)(5))",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=124359900&loc=SL124442552-122756"
  },
  "r332": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r333": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r334": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r335": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r336": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r337": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(f)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r338": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r339": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r34": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(20))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r340": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(i)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r341": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611"
  },
  "r342": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611"
  },
  "r343": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611"
  },
  "r344": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495334-112611"
  },
  "r345": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611"
  },
  "r346": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611"
  },
  "r347": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495340-112611"
  },
  "r348": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1E",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611"
  },
  "r349": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1E",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611"
  },
  "r35": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(22))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r350": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1E",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611"
  },
  "r351": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1E",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495348-112611"
  },
  "r352": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1F",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611"
  },
  "r353": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1F",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611"
  },
  "r354": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1F",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611"
  },
  "r355": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1F",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611"
  },
  "r356": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1I",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611"
  },
  "r357": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1I",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611"
  },
  "r358": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1I",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611"
  },
  "r359": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1I",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466505&loc=SL123495371-112611"
  },
  "r36": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(24))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r360": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870"
  },
  "r361": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870"
  },
  "r362": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870"
  },
  "r363": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "69B",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612"
  },
  "r364": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "69C",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612"
  },
  "r365": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "69E",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612"
  },
  "r366": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "69F",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612"
  },
  "r367": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Topic": "470",
   "URI": "http://asc.fasb.org/extlink&oid=7516071&loc=d3e13374-112631"
  },
  "r368": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "470",
   "URI": "http://asc.fasb.org/topic&trid=2208564"
  },
  "r369": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644"
  },
  "r37": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r370": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644"
  },
  "r371": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644"
  },
  "r372": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644"
  },
  "r373": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644"
  },
  "r374": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(i)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644"
  },
  "r375": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496158-112644"
  },
  "r376": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644"
  },
  "r377": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644"
  },
  "r378": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496171-112644"
  },
  "r379": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "16",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496180-112644"
  },
  "r38": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(26)(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r380": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644"
  },
  "r381": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644"
  },
  "r382": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644"
  },
  "r383": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=SL123496189-112644"
  },
  "r384": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644"
  },
  "r385": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.3-04)",
   "Topic": "505",
   "URI": "http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770"
  },
  "r386": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "505",
   "URI": "http://asc.fasb.org/topic&trid=2208762"
  },
  "r387": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044"
  },
  "r388": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044"
  },
  "r389": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045"
  },
  "r39": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(27))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r390": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045"
  },
  "r391": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045"
  },
  "r392": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045"
  },
  "r393": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045"
  },
  "r394": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130554-203045"
  },
  "r395": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)(2)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130556-203045"
  },
  "r396": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130558-203045"
  },
  "r397": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045"
  },
  "r398": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045"
  },
  "r399": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045"
  },
  "r4": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "105",
   "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695"
  },
  "r40": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(28))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r400": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123351226&loc=SL49130550-203045"
  },
  "r401": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046"
  },
  "r402": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046"
  },
  "r403": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046"
  },
  "r404": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046"
  },
  "r405": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046"
  },
  "r406": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046"
  },
  "r407": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "91",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123410239&loc=SL49130690-203046-203046"
  },
  "r408": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(g)(2)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048"
  },
  "r409": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(i)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048"
  },
  "r41": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(29))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r410": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(i)(2)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048"
  },
  "r411": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(j)",
   "Topic": "606",
   "URI": "http://asc.fasb.org/extlink&oid=123338486&loc=SL49131195-203048"
  },
  "r412": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "606",
   "URI": "http://asc.fasb.org/topic&trid=49130388"
  },
  "r413": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "15",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "712",
   "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664"
  },
  "r414": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "15",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "712",
   "URI": "http://asc.fasb.org/extlink&oid=6410066&loc=d3e79218-111664"
  },
  "r415": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123453770&loc=d3e1703-114919"
  },
  "r416": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123453770&loc=d3e1731-114919"
  },
  "r417": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123453770&loc=SL108413299-114919"
  },
  "r418": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r419": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r42": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(3)(a)(2))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r420": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(10)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r421": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r422": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r423": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r424": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r425": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r426": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r427": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(8)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r428": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(9)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r429": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r43": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r430": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r431": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r432": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r433": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r434": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r435": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r436": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r437": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(8)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r438": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r439": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r44": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30)(a)(3))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r440": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(i)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r441": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(ii)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r442": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iii)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r443": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(01)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r444": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r445": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)(A)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r446": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)(B)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r447": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(02)(C)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r448": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(d)(iv)(03)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r449": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(e)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r45": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30)(a)(4))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r450": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(f)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r451": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r452": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r453": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r454": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r455": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r456": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r457": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r458": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r459": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(h)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r46": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(30))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r460": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(i)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r461": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(j)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r462": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r463": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r464": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r465": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r466": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(k)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r467": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(l)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r468": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(n)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r469": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(o)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r47": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(31))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r470": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(p)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r471": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(q)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r472": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(r)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r473": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(r)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r474": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920"
  },
  "r475": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2410-114920"
  },
  "r476": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920"
  },
  "r477": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920"
  },
  "r478": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920"
  },
  "r479": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2439-114920"
  },
  "r48": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(32))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r480": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r481": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r482": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r483": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r484": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(4)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r485": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(5)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r486": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(6)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r487": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)(7)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r488": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920"
  },
  "r489": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123447040&loc=d3e2919-114920"
  },
  "r49": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(7))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r490": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921"
  },
  "r491": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921"
  },
  "r492": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "20",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=21916913&loc=d3e273930-122802"
  },
  "r493": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "60",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39689-114964"
  },
  "r494": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "60",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964"
  },
  "r495": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "70",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942"
  },
  "r496": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "80",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=29639808&loc=d3e29008-114946"
  },
  "r497": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r498": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r499": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r5": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "105",
   "URI": "http://asc.fasb.org/extlink&oid=124434974&loc=SL124442142-165695"
  },
  "r50": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02(8))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r500": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947"
  },
  "r501": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r502": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r503": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r504": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(d)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r505": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(e)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r506": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(e)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r507": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(f)(1)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r508": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(f)(2)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r509": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(f)(3)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947"
  },
  "r51": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.1)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r510": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(a)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947"
  },
  "r511": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947"
  },
  "r512": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(c)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450673-114947"
  },
  "r513": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "80",
   "Subparagraph": "(b)",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947"
  },
  "r514": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "80",
   "Topic": "715",
   "URI": "http://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948"
  },
  "r515": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "715",
   "URI": "http://asc.fasb.org/topic&trid=2235017"
  },
  "r516": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1D",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=123468992&loc=SL116886442-113899"
  },
  "r517": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "35",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=123468992&loc=d3e4549-113899"
  },
  "r518": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
  },
  "r519": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
  },
  "r52": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.12)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r520": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901"
  },
  "r521": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a),(g)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r522": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b),(f)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r523": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r524": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)(iv)(3)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r525": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(i)-(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r526": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)(iii)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r527": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r528": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(g)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r529": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r53": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r530": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(1)(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r531": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(h)(1)(ii)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r532": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(i)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r533": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901"
  },
  "r534": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r535": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r536": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r537": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r538": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r539": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(f)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r54": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r540": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(f)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r541": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(g)(1)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r542": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(g)(2)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=121322162&loc=SL121327923-165333"
  },
  "r543": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 14.F)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809"
  },
  "r544": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929"
  },
  "r545": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(c)",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929"
  },
  "r546": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "718",
   "URI": "http://asc.fasb.org/extlink&oid=109244661&loc=d3e17540-113929"
  },
  "r547": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "718",
   "URI": "http://asc.fasb.org/topic&trid=2228938"
  },
  "r548": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e32247-109318"
  },
  "r549": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e32280-109318"
  },
  "r55": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.13)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r550": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e31917-109318"
  },
  "r551": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123427490&loc=d3e31931-109318"
  },
  "r552": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32672-109319"
  },
  "r553": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319"
  },
  "r554": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32705-109319"
  },
  "r555": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(e)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319"
  },
  "r556": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319"
  },
  "r557": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=SL6600010-109319"
  },
  "r558": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32809-109319"
  },
  "r559": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "19",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32840-109319"
  },
  "r56": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.14)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r560": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319"
  },
  "r561": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319"
  },
  "r562": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319"
  },
  "r563": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319"
  },
  "r564": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32847-109319"
  },
  "r565": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32857-109319"
  },
  "r566": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32559-109319"
  },
  "r567": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319"
  },
  "r568": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319"
  },
  "r569": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319"
  },
  "r57": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.17)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r570": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319"
  },
  "r571": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=121826272&loc=d3e32639-109319"
  },
  "r572": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "217",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=124434304&loc=d3e36027-109320"
  },
  "r573": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277"
  },
  "r574": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277"
  },
  "r575": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)(2)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277"
  },
  "r576": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(d)(3)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277"
  },
  "r577": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277"
  },
  "r578": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(2)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277"
  },
  "r579": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(3)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123459177&loc=SL121830611-158277"
  },
  "r58": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r580": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 6.I.5.Q1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817"
  },
  "r581": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB TOPIC 6.I.7)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817"
  },
  "r582": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.7)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817"
  },
  "r583": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.Fact.1)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817"
  },
  "r584": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.Fact.2)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817"
  },
  "r585": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 6.I.Fact.4)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330036-122817"
  },
  "r586": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 11.C)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=122134291&loc=d3e330215-122817"
  },
  "r587": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123586238&loc=d3e39076-109324"
  },
  "r588": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123586238&loc=d3e38679-109324"
  },
  "r589": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Subparagraph": "(d)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=123586238&loc=d3e38679-109324"
  },
  "r59": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r590": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "270",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=6424409&loc=d3e44925-109338"
  },
  "r591": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "740",
   "URI": "http://asc.fasb.org/extlink&oid=6424122&loc=d3e41874-109331"
  },
  "r592": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "740",
   "URI": "http://asc.fasb.org/topic&trid=2144680"
  },
  "r593": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463"
  },
  "r594": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=79982066&loc=d3e1486-128463"
  },
  "r595": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "740",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=123403335&loc=d3e9972-128506"
  },
  "r596": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "9",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "740",
   "Topic": "805",
   "URI": "http://asc.fasb.org/extlink&oid=123403335&loc=d3e9979-128506"
  },
  "r597": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=123454820&loc=d3e5283-111683"
  },
  "r598": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "18",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=123454820&loc=SL4613673-111683"
  },
  "r599": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988"
  },
  "r6": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-04(Schedule I))",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=120391182&loc=d3e5864-122674"
  },
  "r60": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19(b),22(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r600": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "25",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=116870748&loc=SL6758485-165988"
  },
  "r601": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=d3e5614-111684"
  },
  "r602": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c),(3)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684"
  },
  "r603": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bb)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685"
  },
  "r604": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "810",
   "URI": "http://asc.fasb.org/extlink&oid=123419778&loc=d3e5710-111685"
  },
  "r605": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "810",
   "URI": "http://asc.fasb.org/topic&trid=2197479"
  },
  "r606": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579240-113959"
  },
  "r607": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959"
  },
  "r608": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959"
  },
  "r609": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959"
  },
  "r61": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19,20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r610": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41620-113959"
  },
  "r611": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41638-113959"
  },
  "r612": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959"
  },
  "r613": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959"
  },
  "r614": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a),(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959"
  },
  "r615": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959"
  },
  "r616": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959"
  },
  "r617": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624163-113959"
  },
  "r618": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4C",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959"
  },
  "r619": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959"
  },
  "r62": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.19-26)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r620": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959"
  },
  "r621": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959"
  },
  "r622": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41641-113959"
  },
  "r623": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41675-113959"
  },
  "r624": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=125515794&loc=d3e41678-113959"
  },
  "r625": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "182",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123421605&loc=SL5629052-113961"
  },
  "r626": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "25",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986"
  },
  "r627": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(f)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123477628&loc=d3e90205-114008"
  },
  "r628": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(a)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r629": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(a)(2)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r63": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.20)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r630": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(a)(3)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r631": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(b)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r632": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(b)(2)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r633": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(c)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r634": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(d)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r635": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(e)(1)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r636": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(e)(2)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r637": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(e)(3)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r638": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(e)(4)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r639": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(f)",
   "Topic": "815",
   "URI": "http://asc.fasb.org/extlink&oid=123482062&loc=SL123482106-238011"
  },
  "r64": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.21)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r640": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258"
  },
  "r641": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258"
  },
  "r642": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bb)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258"
  },
  "r643": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bbb)(1)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258"
  },
  "r644": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(bbb)(2)",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258"
  },
  "r645": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258"
  },
  "r646": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258"
  },
  "r647": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "820",
   "URI": "http://asc.fasb.org/extlink&oid=123874694&loc=SL6742756-110258"
  },
  "r648": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740"
  },
  "r649": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611"
  },
  "r65": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22(a)(1))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r650": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "21",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611"
  },
  "r651": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "28",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(f)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123596393&loc=d3e14064-108612"
  },
  "r652": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL120254526-165497"
  },
  "r653": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL120254526-165497"
  },
  "r654": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497"
  },
  "r655": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497"
  },
  "r656": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)(1)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497"
  },
  "r657": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)(2)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497"
  },
  "r658": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497"
  },
  "r659": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(2)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497"
  },
  "r66": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.22)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r660": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(3)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL121967933-165497"
  },
  "r661": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL122642865-165497"
  },
  "r662": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "825",
   "URI": "http://asc.fasb.org/extlink&oid=123597120&loc=SL122642865-165497"
  },
  "r663": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "230",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=123444420&loc=d3e33268-110906"
  },
  "r664": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900"
  },
  "r665": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r666": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(b)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r667": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(c)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r668": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Subparagraph": "(d)",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r669": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "20",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900"
  },
  "r67": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.24)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r670": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901"
  },
  "r671": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "830",
   "URI": "http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901"
  },
  "r672": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391"
  },
  "r673": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399"
  },
  "r674": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399"
  },
  "r675": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629"
  },
  "r676": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "8",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "30",
   "Topic": "835",
   "URI": "http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400"
  },
  "r677": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980"
  },
  "r678": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(g)(2)",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980"
  },
  "r679": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "53",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "842",
   "URI": "http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971"
  },
  "r68": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.25)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r680": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "848",
   "URI": "http://asc.fasb.org/extlink&oid=122150657&loc=SL122150809-237846"
  },
  "r681": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(e)(1)",
   "Topic": "848",
   "URI": "http://asc.fasb.org/extlink&oid=122150657&loc=SL122150809-237846"
  },
  "r682": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r683": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r684": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r685": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r686": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864"
  },
  "r687": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864"
  },
  "r688": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "850",
   "URI": "http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864"
  },
  "r689": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "850",
   "URI": "http://asc.fasb.org/topic&trid=2122745"
  },
  "r69": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.29-31)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r690": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "852",
   "URI": "http://asc.fasb.org/extlink&oid=124437977&loc=d3e55792-112764"
  },
  "r691": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "852",
   "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765"
  },
  "r692": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "852",
   "URI": "http://asc.fasb.org/extlink&oid=124433192&loc=SL2890621-112765"
  },
  "r693": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "852",
   "URI": "http://asc.fasb.org/extlink&oid=84165509&loc=d3e56426-112766"
  },
  "r694": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662"
  },
  "r695": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "855",
   "URI": "http://asc.fasb.org/extlink&oid=6842918&loc=SL6314020-165662"
  },
  "r696": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)(i)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r697": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)(ii)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r698": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r699": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r7": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "205",
   "URI": "http://asc.fasb.org/extlink&oid=109222650&loc=SL51721683-107760"
  },
  "r70": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.3(a)(1),(4))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r700": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r701": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(bb)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r702": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r703": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r704": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719"
  },
  "r705": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r706": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r707": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(b)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r708": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719"
  },
  "r709": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4D",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(c)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=121570589&loc=SL51823488-111719"
  },
  "r71": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.3(a)(2))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r710": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "30",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728"
  },
  "r711": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "30",
   "Subparagraph": "(a)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=109249958&loc=SL34722452-111729"
  },
  "r712": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746"
  },
  "r713": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746"
  },
  "r714": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746"
  },
  "r715": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(4)(i)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122625-111746"
  },
  "r716": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r717": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r718": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r719": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(4)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r72": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.3,4)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r720": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(5)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r721": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(6)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r722": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(a)(7)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r723": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(b)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r724": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(e)(1)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r725": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(e)(2)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r726": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "50",
   "Subparagraph": "(e)(3)",
   "Topic": "860",
   "URI": "http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746"
  },
  "r727": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "910",
   "URI": "http://asc.fasb.org/extlink&oid=123353855&loc=SL119991595-234733"
  },
  "r728": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "330",
   "Topic": "912",
   "URI": "http://asc.fasb.org/extlink&oid=6471895&loc=d3e55923-109411"
  },
  "r729": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SAB Topic 11.L)",
   "Topic": "924",
   "URI": "http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856"
  },
  "r73": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.6(a))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r730": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959"
  },
  "r731": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r732": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(b)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r733": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(c)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r734": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(f)(1)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r735": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(f)(2)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r736": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "20",
   "Subparagraph": "(f)(3)",
   "Topic": "926",
   "URI": "http://asc.fasb.org/extlink&oid=120154821&loc=SL120154904-197079"
  },
  "r737": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(1)(a))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r738": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(10)(1))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r739": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(10))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r74": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.6(b))",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r740": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(11))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r741": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(13)(2))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r742": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(13))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r743": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(15)(2))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r744": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(16))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r745": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03(23))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r746": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.9-03.17)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878"
  },
  "r747": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(13)(f))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r748": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(22))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r749": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(23))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r75": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.8)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r750": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04(26))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r751": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04.1)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r752": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.9-04.9)",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260"
  },
  "r753": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "235",
   "Subparagraph": "(SX 210.9-05(b)(2))",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=120399901&loc=d3e537907-122884"
  },
  "r754": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "320",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=123599081&loc=d3e62652-112803"
  },
  "r755": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Topic": "942",
   "URI": "http://asc.fasb.org/extlink&oid=124429447&loc=SL124453093-239630"
  },
  "r756": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(15)(b)(2))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r757": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r758": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(1)(b))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r759": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(10))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r76": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-02.9)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682"
  },
  "r760": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(12))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r761": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(16))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r762": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(2))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r763": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(23)(a)(3))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r764": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(23)(a)(4))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r765": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(25))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r766": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03(a)(8))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r767": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.7-03.(a),19)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910"
  },
  "r768": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(10))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r769": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(18))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r77": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "3",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "20",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312"
  },
  "r770": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(19))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r771": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(22))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r772": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.7-04(9))",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263"
  },
  "r773": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4H",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=116884468&loc=SL65671331-158438"
  },
  "r774": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7A",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "40",
   "Subparagraph": "(d)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124506351&loc=SL117782755-158439"
  },
  "r775": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117783719-158441"
  },
  "r776": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "13H",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Subparagraph": "(c)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117783719-158441"
  },
  "r777": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "29F",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "40",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124504033&loc=SL117819544-158441"
  },
  "r778": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(a)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r779": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(b)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r78": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "22",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313"
  },
  "r780": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(e)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r781": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(f)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r782": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(f)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r783": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r784": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(i)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r785": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(ii)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r786": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(iii)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r787": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(g)(2)(iv)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r788": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(h)(1)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r789": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "40",
   "Subparagraph": "(h)(2)",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=124501264&loc=SL117420844-207641"
  },
  "r79": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "20",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=99393222&loc=SL20226000-175313"
  },
  "r790": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "825",
   "Topic": "944",
   "URI": "http://asc.fasb.org/extlink&oid=123600520&loc=SL75241803-196195"
  },
  "r791": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "210",
   "Subparagraph": "(SX 210.6-04.2)",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=120401414&loc=d3e603758-122996"
  },
  "r792": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "220",
   "Subparagraph": "(SX 210.6-07.1(c))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=120401555&loc=SL114874292-224272"
  },
  "r793": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-15(Column B))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010"
  },
  "r794": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-15(Column C))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010"
  },
  "r795": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "320",
   "Subparagraph": "(SX 210.12-15(Column D))",
   "Topic": "946",
   "URI": "http://asc.fasb.org/extlink&oid=122147990&loc=d3e611379-123010"
  },
  "r796": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "210",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=120413173&loc=SL116631458-115580"
  },
  "r797": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "310",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=123364037&loc=d3e3115-115594"
  },
  "r798": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "440",
   "Subparagraph": "(a)",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491277&loc=d3e6429-115629"
  },
  "r799": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "450",
   "Topic": "954",
   "URI": "http://asc.fasb.org/extlink&oid=6491354&loc=d3e6049-115624"
  },
  "r8": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "205",
   "URI": "http://asc.fasb.org/topic&trid=2122149"
  },
  "r80": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(d)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580"
  },
  "r800": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Subparagraph": "(d)",
   "Topic": "958",
   "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916"
  },
  "r801": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Topic": "958",
   "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916"
  },
  "r802": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "7",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "360",
   "Topic": "958",
   "URI": "http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916"
  },
  "r803": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SX 210.12-28(Footnote 4))",
   "Topic": "970",
   "URI": "http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024"
  },
  "r804": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "310",
   "Subparagraph": "(c)",
   "Topic": "976",
   "URI": "http://asc.fasb.org/extlink&oid=6497875&loc=d3e22274-108663"
  },
  "r805": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "310",
   "Subparagraph": "(b)",
   "Topic": "978",
   "URI": "http://asc.fasb.org/extlink&oid=123360121&loc=d3e27327-108691"
  },
  "r806": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "05",
   "SubTopic": "10",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=123345215&loc=d3e39995-110364"
  },
  "r807": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "20",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=84167750&loc=d3e42232-110370"
  },
  "r808": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "340",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382"
  },
  "r809": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "340",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=6499975&loc=d3e44264-110382"
  },
  "r81": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "10A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669646-108580"
  },
  "r810": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SAB TOPIC 10.C)",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=122136288&loc=d3e659983-123033"
  },
  "r811": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "360",
   "Subparagraph": "(SAB Topic 10.C)",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=122136288&loc=d3e659983-123033"
  },
  "r812": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "405",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=6500807&loc=d3e48068-110394"
  },
  "r813": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "715",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=6501251&loc=d3e52485-110419"
  },
  "r814": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "25",
   "SubTopic": "835",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=6501569&loc=d3e55921-110430"
  },
  "r815": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "835",
   "Topic": "980",
   "URI": "http://asc.fasb.org/extlink&oid=6501662&loc=d3e56162-110433"
  },
  "r816": {
   "Name": "Accounting Standards Codification",
   "Publisher": "FASB",
   "Topic": "980",
   "URI": "http://asc.fasb.org/topic&trid=2156578"
  },
  "r817": {
   "Name": "Exchange Act",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r818": {
   "Name": "Form 10-K",
   "Number": "249",
   "Publisher": "SEC",
   "Section": "310"
  },
  "r819": {
   "Name": "Form 20-F",
   "Number": "249",
   "Publisher": "SEC",
   "Section": "220",
   "Subsection": "f"
  },
  "r82": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "11",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e637-108580"
  },
  "r820": {
   "Name": "Form 40-F",
   "Number": "249",
   "Publisher": "SEC",
   "Section": "240",
   "Subsection": "f"
  },
  "r821": {
   "Name": "Forms 10-K, 10-Q, 20-F",
   "Number": "240",
   "Publisher": "SEC",
   "Section": "13",
   "Subsection": "a-1"
  },
  "r822": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(a)",
   "Publisher": "SEC",
   "Section": "1402"
  },
  "r823": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(b)",
   "Publisher": "SEC",
   "Section": "1402",
   "Subparagraph": "(1)"
  },
  "r824": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(b)",
   "Publisher": "SEC",
   "Section": "1402",
   "Subparagraph": "(2)"
  },
  "r825": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(b)",
   "Publisher": "SEC",
   "Section": "1402",
   "Subparagraph": "(3)"
  },
  "r826": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(c)",
   "Publisher": "SEC",
   "Section": "1402",
   "Subparagraph": "(2)(i)"
  },
  "r827": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(c)",
   "Publisher": "SEC",
   "Section": "1402",
   "Subparagraph": "(2)(ii)"
  },
  "r828": {
   "Name": "Regulation S-K (SK)",
   "Number": "229",
   "Paragraph": "(c)",
   "Publisher": "SEC",
   "Section": "1402",
   "Subparagraph": "(2)(iii)"
  },
  "r829": {
   "Name": "Regulation S-T",
   "Number": "232",
   "Publisher": "SEC",
   "Section": "405"
  },
  "r83": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "12",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e640-108580"
  },
  "r830": {
   "Name": "Securities Act",
   "Number": "230",
   "Publisher": "SEC",
   "Section": "405"
  },
  "r831": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "848"
  },
  "r832": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)(1)",
   "Topic": "848"
  },
  "r833": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)(2)",
   "Topic": "848"
  },
  "r834": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)(3)(iii)(01)",
   "Topic": "848"
  },
  "r835": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(a)(3)(iii)(03)",
   "Topic": "848"
  },
  "r836": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "65",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "848"
  },
  "r84": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e681-108580"
  },
  "r85": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "14A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580"
  },
  "r86": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "17A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL34724391-108580"
  },
  "r87": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580"
  },
  "r88": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580"
  },
  "r89": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1A",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(c)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669619-108580"
  },
  "r9": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "210",
   "URI": "http://asc.fasb.org/extlink&oid=124098289&loc=d3e6676-107765"
  },
  "r90": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(a)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580"
  },
  "r91": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1B",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Subparagraph": "(b)",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=SL7669625-108580"
  },
  "r92": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "45",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124509347&loc=d3e557-108580"
  },
  "r93": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "1",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL116659661-227067"
  },
  "r94": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "4",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442407-227067"
  },
  "r95": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "5",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124442411-227067"
  },
  "r96": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "6",
   "Publisher": "FASB",
   "Section": "50",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124431353&loc=SL124452729-227067"
  },
  "r97": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "15",
   "Publisher": "FASB",
   "Section": "55",
   "SubTopic": "10",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=124507222&loc=d3e1436-108581"
  },
  "r98": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(210.5-03(11))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  },
  "r99": {
   "Name": "Accounting Standards Codification",
   "Paragraph": "2",
   "Publisher": "FASB",
   "Section": "S99",
   "SubTopic": "10",
   "Subparagraph": "(SX 210.5-03(1))",
   "Topic": "220",
   "URI": "http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227"
  }
 },
 "version": "2.1"
}

Document and Entity Information Document - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2021	Feb. 11, 2022
Document Information [Line Items]
ICFR Auditor Attestation Flag	false
Entity Common Stock, Shares Outstanding		224,203,112
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Document Transition Report	false
Entity File Number	001-32576
Entity Registrant Name	ITC HOLDINGS CORP.
Entity Incorporation, State or Country Code	MI
Entity Tax Identification Number	32-0058047
Entity Address, Address Line One	27175 Energy Way
Entity Address, City or Town	Novi
Entity Address, State or Province	MI
Entity Address, Postal Zip Code	48377
City Area Code	248
Local Phone Number	946-3000
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Central Index Key	0001317630
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Shell Company	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		224,203,112
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	Yes
Entity Public Float	$ 0.0
Entity Emerging Growth Company	false

Audit Information	12 Months Ended
Audit Information	Dec. 31, 2021
Auditor [Line Items]
Auditor Location	Detroit, Michigan
Auditor Name	DELOITTE & TOUCHE LLP
Auditor Firm ID	34

CONSOLIDATED STATEMENTS OF FINANCIAL POSITION (Parentheticals) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, plant and equipment, accumulated depreciation and amortization	$ 2,199	$ 2,055
Intangible assets, accumulated amortization	$ 49	$ 46
Common stock, without par value	$ 0	$ 0
Common stock, shares authorized	235,000,000	235,000,000
Common stock, shares issued	224,203,112	224,203,112
Common stock, shares outstanding	224,203,112	224,203,112

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
OPERATING REVENUES
Transmission and other services	$ 1,358	$ 1,290	$ 1,286
Formula rate true-up	(9)	8	41
OPERATING REVENUES	1,349	1,298	1,327
OPERATING EXPENSES
Operation and maintenance	108	87	113
General and administrative	128	115	138
Depreciation and amortization	232	219	203
Taxes other than income taxes	133	124	118
Other operating (income) and expense, net	(1)	0	0
Total operating expenses	600	545	572
OPERATING INCOME	749	753	755
OTHER EXPENSES (INCOME)
Interest expense, net	251	240	224
Allowance for equity funds used during construction	(30)	(27)	(29)
Other (income) and expenses, net	(5)	(3)	0
Total other expenses (income)	216	210	195
INCOME BEFORE INCOME TAXES	533	543	560
INCOME TAX PROVISION	127	136	132
NET INCOME	406	407	428
Derivative instruments, net of tax	6	(15)	3
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX	6	(15)	3
TOTAL COMPREHENSIVE INCOME	$ 412	$ 392	$ 431

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDER'S EQUITY - USD ($) $ in Millions	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Stockholder's equity at Dec. 31, 2018	$ 2,051	$ 892	$ 1,155	$ 4
NET INCOME	428		428
Dividends to ITC Investment Holdings	(250)		(250)
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX	3			3
Stockholder's equity at Dec. 31, 2019	2,232	892	1,333	7
NET INCOME	407		407
Dividends to ITC Investment Holdings	(330)		(330)
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX	(15)			(15)
Stockholder's equity at Dec. 31, 2020	2,294	892	1,410	(8)
NET INCOME	406		406
Dividends to ITC Investment Holdings	(232)		(232)
TOTAL OTHER COMPREHENSIVE LOSS, NET OF TAX	6			6
Stockholder's equity at Dec. 31, 2021	$ 2,474	$ 892	$ 1,584	$ (2)

GENERAL	12 Months Ended
GENERAL	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
GENERAL	GENERAL ITC Holdings and its subsidiaries are engaged in the transmission of electricity in the United States. ITC Holdings is a wholly-owned subsidiary of ITC Investment Holdings. Fortis owns a majority indirect equity interest in ITC Investment Holdings, with GIC holding an indirect, passive, non-voting equity interest of 19.9%. Through our Regulated Operating Subsidiaries, we own, operate, maintain and invest in high-voltage electric transmission systems in Michigan’s Lower Peninsula and portions of Iowa, Minnesota, Illinois, Missouri, Kansas, and Oklahoma that transmit electricity from generating stations to local distribution facilities connected to our transmission systems. Our Regulated Operating Subsidiaries are independent electric transmission utilities, with cost-based rates regulated by the FERC. ITCTransmission’s service area is located in southeastern Michigan, while METC’s service area covers approximately two-thirds of Michigan’s Lower Peninsula and is contiguous with ITCTransmission’s service area. ITC Midwest’s service area is located in portions of Iowa, Minnesota, Illinois and Missouri and ITC Great Plains currently owns assets located in Kansas and Oklahoma. MISO bills and collects revenues from the MISO Regulated Operating Subsidiaries’ customers. SPP bills and collects revenue from ITC Great Plains’ customers. ITC Interconnection currently owns assets in Michigan and earns revenues based on its facilities reimbursement agreement with a merchant generating company. Recent Developments Regarding the COVID-19 Pandemic In March 2020, the World Health Organization declared COVID-19 a pandemic. Efforts to control the outbreak of COVID-19 have resulted in challenges to businesses and facilities in various industries around the world, including our customers, and disruptions to the global economy and supply chains. To date, COVID-19 has not had a material impact on our net income. However, for 2020, we utilized various temporary cost saving measures related to operating expenses, including operation and maintenance expenses and general and administrative expenses, in an attempt to reduce costs for our customers that were collected through our Formula Rates. We are unable to predict the ultimate effects of COVID-19 on the U.S. or global economy or our operations. We continue to monitor developments affecting our workforce, customers, suppliers, and operations. The extent of the impact of COVID-19 will depend on its duration, actions by government authorities, and impacts on our customers, employees, or vendors. These developments are continuously evolving, and we cannot predict whether COVID-19 will have a material impact on our financial condition, results of operations or cash flows.

SUPPLEMENTAL FIANNCIAL INFORMATION Restricted Cash Reconciliation - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Supplemental Cash Flow Elements [Abstract]
Cash and cash equivalents	$ 5	$ 4	$ 4	$ 6
Restricted Cash, included in other non-current assets	2	2	2	4
Total cash, cash equivalents and restricted cash	$ 7	$ 6	$ 6	$ 10

RECENT ACCOUNTING PRONOUNCEMENTS	12 Months Ended
RECENT ACCOUNTING PRONOUNCEMENTS	Dec. 31, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
RECENT ACCOUNTING PRONOUNCEMENTS	RECENT ACCOUNTING PRONOUNCEMENTS Recently Adopted Pronouncements Accounting for Cloud Computing Arrangements In August 2018, the FASB issued authoritative guidance to address the accounting for implementation costs incurred in a cloud computing agreement that is a service contract. The new standard aligns the accounting for implementation costs incurred in a cloud computing arrangement as a service contract with existing guidance on capitalizing costs associated with developing or obtaining internal-use software. In addition, the new guidance requires entities to expense capitalized implementation costs of a cloud computing arrangement that is a service contract over the term of the agreement and to present the expense in the same income statement line item as the hosting fees. The guidance was effective for fiscal years beginning after December 15, 2019 with either prospective or retrospective adoption permitted. We adopted the standard prospectively on January 1, 2020. Adoption of this standard did not have a material impact on our consolidated financial statements.

REVENUE	12 Months Ended
REVENUE	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer	REVENUE Our total revenues are comprised of revenues which arise from three classifications including transmission services, other services, and Formula Rate true-up. As other services revenue is immaterial, it is presented in combination with transmission services on the consolidated statements of comprehensive income. Transmission Services Through our Regulated Operating Subsidiaries, we generate nearly all our revenue from providing electric transmission services over our transmission systems. As independent transmission companies, our transmission services are provided and revenues are received based on our tariffs, as approved by the FERC. The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items. We recognize revenue for transmission services over time as transmission services are provided to customers (generally using an output measure of progress based on transmission load delivered). Customers simultaneously receive and consume the benefits provided by the Regulated Operating Subsidiaries’ services. We recognize revenue in the amount to which we have the right to invoice because we have a right to consideration in an amount that corresponds directly with the value to the customer of performance completed to date. As billing agents, MISO and SPP independently bill our customers on a monthly basis and collects fees for the use of our transmission systems. No component of the transaction price is allocated to unsatisfied performance obligations. Transmission service revenue includes an estimate for unbilled revenues from service that has been provided but not billed by the end of an accounting period. Unbilled revenues are dependent upon a number of factors that require management’s judgment including estimates of transmission network load (for the MISO Regulated Operating Subsidiaries) and preliminary information provided by billing agents. Due to the seasonal fluctuations of actual load, the unbilled revenue amount generally increases during the spring and summer and decreases during the fall and winter. See Note 4 for information on changes in unbilled accounts receivable. Other Services Other services revenue consists of rental revenues, easement revenues, and amounts from providing ancillary services. A portion of other services revenue is treated as a revenue credit and reduces gross revenue requirement when calculating net revenue requirement under our Formula Rates. Total other services revenue was $6 million, $5 million and $7 million for the years ended December 31, 2021, 2020 and 2019, respectively. Formula Rate True-Up The true-up mechanism under our Formula Rates is considered an alternative revenue program of a rate-regulated utility given it permits our Regulated Operating Subsidiaries to adjust future rates in response to past activities or completed events in order to collect our actual revenue requirements under our Formula Rates. In accordance with our accounting policy, only the current year origination of the true-up is reported as a Formula Rate true-up. See “Cost-Based Formula Rates with True-Up Mechanism” in Note 5 for more information on our Formula Rates.

RELATED PARTY TRANSACTIONS	12 Months Ended
RELATED PARTY TRANSACTIONS	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions Disclosure [Text Block]	RELATED PARTY TRANSACTIONS Intercompany Receivables and Payables ITC Holdings may incur charges from Fortis and other subsidiaries of Fortis that are not subsidiaries of ITC Holdings for general corporate expenses incurred. In addition, ITC Holdings may perform additional services for, or receive additional services from, Fortis and such subsidiaries. These transactions are in the normal course of business and payments for these services are settled through accounts receivable and accounts payable, as necessary. We had intercompany receivables from Fortis and such subsidiaries of $2 million and less than $1 million at December 31, 2021 and December 31, 2020, respectively, and intercompany payables to Fortis and such subsidiaries of less than $1 million at December 31, 2021 and December 31, 2020. Related party charges for corporate expenses from Fortis and such subsidiaries are recorded in general and administrative expense. ITC Holdings had such expense for the years ended December 31, 2021, 2020 and 2019 of $10 million. Related party billings for services to Fortis and other subsidiaries recorded as an offset to general and administrative expenses for ITC Holdings were $2 million for each of the years ended December 31, 2021 and 2020, and less than $1 million for the year ended December 31, 2019. Dividends We paid dividends of $232 million, $330 million and $250 million during the years ended December 31, 2021, 2020 and 2019, respectively, to ITC Investment Holdings. ITC Holdings also paid dividends of $64 million to ITC Investment Holdings in January 2022. Transfer of Membership Interests In February 2021, we transferred our membership interests in certain wholly-owned development entities to our parent company, ITC Investment Holdings. The transfer was accounted for at book value as a non-reciprocal transfer of value. There was no gain or loss recognized on the transfer. The transfer did not have a material impact on our consolidated financial condition, results of operations or cash flows. Intercompany Tax Sharing Agreement We are organized as a corporation for tax purposes and subject to a tax sharing agreement as a wholly-owned subsidiary of ITC Investment Holdings. Additionally, we record income taxes based on our separate company tax position and make or receive tax-related payments with ITC Investment Holdings. During the year ended December 31, 2021, we did not make or receive any tax-related payments with ITC Investment Holdings. During year ended December 31, 2020, we paid $2 million to ITC Investment Holdings for matters related to the State of Michigan income taxes. During the year ended December 31, 2019 we did not make or receive any tax-related payments with ITC Investment Holdings. During each of the years ended December 31, 2020 and 2019, we received a payment of $2 million from FortisUS for a tax refund that originated prior to establishing the tax sharing agreement.

REVENUE (Policies)	12 Months Ended
REVENUE (Policies)	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenues	Revenues from the transmission of electricity are recognized as services are provided based on our FERC-approved cost-based Formula Rates. We record a reserve for revenue subject to refund when such refund is probable and can be reasonably estimated. This reserve is recorded as a reduction to operating revenues.The cost-based Formula Rates at our Regulated Operating Subsidiaries include a true-up mechanism that compares the actual revenue requirements of our Regulated Operating Subsidiaries to their billed revenues for each year to determine any over- or under-collection of revenue requirements and we record a revenue deferral or accrual for the difference. The true-up mechanisms under our Formula Rates are considered alternative revenue programs of rate-regulated utilities. Operating revenues arising from these alternative revenue programs are presented on our consolidated statements of comprehensive income in the line “Formula Rate true-up”, which is separate from the reporting of our tariff revenues, which are presented in the line “Transmission and other services.” Only the initial origination of our alternative revenue program revenue is reported in the Formula Rate true-up line on our consolidated statements of comprehensive income. When those amounts are subsequently included in the price of utility service and billed or refunded to customers, we account for that event as the recovery or settlement of the associated regulatory asset or regulatory liability, respectively. Refer to Note 5 under “Cost-Based Formula Rates with True-Up Mechanism” and Note 3 under “Formula Rate True-Up” for a discussion of our revenue accounting under our cost-based Formula Rates. Transmission Services Through our Regulated Operating Subsidiaries, we generate nearly all our revenue from providing electric transmission services over our transmission systems. As independent transmission companies, our transmission services are provided and revenues are received based on our tariffs, as approved by the FERC. The transmission revenue requirements at our Regulated Operating Subsidiaries are set annually using Formula Rates and remain in effect for a one-year period. By updating the inputs to the formula and resulting rates on an annual basis, the revenues at our Regulated Operating Subsidiaries reflect changing operational data and financial performance, including the amount of network load on their transmission systems (for our MISO Regulated Operating Subsidiaries), operating expenses and additions to property, plant and equipment when placed in service, among other items. We recognize revenue for transmission services over time as transmission services are provided to customers (generally using an output measure of progress based on transmission load delivered). Customers simultaneously receive and consume the benefits provided by the Regulated Operating Subsidiaries’ services. We recognize revenue in the amount to which we have the right to invoice because we have a right to consideration in an amount that corresponds directly with the value to the customer of performance completed to date. As billing agents, MISO and SPP independently bill our customers on a monthly basis and collects fees for the use of our transmission systems. No component of the transaction price is allocated to unsatisfied performance obligations. Transmission service revenue includes an estimate for unbilled revenues from service that has been provided but not billed by the end of an accounting period. Unbilled revenues are dependent upon a number of factors that require management’s judgment including estimates of transmission network load (for the MISO Regulated Operating Subsidiaries) and preliminary information provided by billing agents. Due to the seasonal fluctuations of actual load, the unbilled revenue amount generally increases during the spring and summer and decreases during the fall and winter. See Note 4 for information on changes in unbilled accounts receivable. Other Services Other services revenue consists of rental revenues, easement revenues, and amounts from providing ancillary services. A portion of other services revenue is treated as a revenue credit and reduces gross revenue requirement when calculating net revenue requirement under our Formula Rates. Total other services revenue was $6 million, $5 million and $7 million for the years ended December 31, 2021, 2020 and 2019, respectively. Formula Rate True-Up The true-up mechanism under our Formula Rates is considered an alternative revenue program of a rate-regulated utility given it permits our Regulated Operating Subsidiaries to adjust future rates in response to past activities or completed events in order to collect our actual revenue requirements under our Formula Rates. In accordance with our accounting policy, only the current year origination of the true-up is reported as a Formula Rate true-up. See “Cost-Based Formula Rates with True-Up Mechanism” in Note 5 for more information on our Formula Rates.

GENERAL (Details)	Apr. 20, 2016
Business Acquisition [Line Items]
Ownership Percentage of Minority Investor Upon Completion of Merger	19.90%

REVENUE (Details) - USD ($) $ in Millions	12 Months Ended
REVENUE (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Transmission services	$ 1,358	$ 1,290	$ 1,286
Other services
Disaggregation of Revenue [Line Items]
Transmission services	$ 6	$ 5	$ 7

ACCOUNTS RECEIVABLE (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 128	$ 114	$ 117	$ 102
Unbilled accounts receivable	116	102	102	92
Other	9	10	13	8
Trade accounts receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 3	$ 2	$ 2	$ 2

REGULATORY MATTERS Changes in Regulatory Assets and Liabilities (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Revenue Accruals and Deferrals
Net regulatory assets as of December 31, 2020	$ 50
Net collection of 2019 revenue deferrals and accruals, including accrued interest	(43)
Net revenue deferral for the year ended December 31, 2021	(9)
Net regulatory liabilities as of December 31, 2021	$ (2)

REGULATORY ASSETS AND LIABILITIES Additional Information (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
	Jan. 01, 2007	Feb. 28, 2003	Jun. 30, 2015	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 31, 2007
Regulatory Liabilities
Document Period End Date				Dec. 31, 2021
Regulatory liabilities				$ 14	$ 14
Regulatory liabilities				619	612
Regulatory Assets
Regulatory assets				$ 211	264
MICHIGAN
Regulatory Assets
State income tax rate				6.00%
Income taxes refundable related to implementation of Tax Reform
Regulatory Liabilities
Amortization Of Excess Deferred Taxes				$ 8	2
Regulatory liabilities				495	507
Revenue Deferrals, Accrued Interest [Member]
Regulatory Liabilities
Regulatory liabilities				1	1
Regulatory liabilities				1	1
Refund related to the Initial Complaint, Accrued Interest
Regulatory Liabilities
Regulatory liabilities				0	1
ITCTransmission \| ADIT Deferral
Regulatory Assets
Regulatory assets		$ 61
Regulatory asset, amortization period		20 years
Amortization of regulatory asset				$ 3	3	$ 3
ITCTransmission \| Income Taxes Recoverable Related to Implementation of the Michigan Corporate Income Tax
Regulatory Assets
Regulatory asset, amortization period				23 years
METC \| ADIT Deferral
Regulatory Assets
Regulatory assets							$ 43
Regulatory asset, amortization period	18 years
Amortization of regulatory asset				$ 2	2	2
METC \| Regulatory Deferrals
Regulatory Assets
Regulatory assets							$ 15
Regulatory asset, amortization period	20 years
Amortization of regulatory asset				$ 1	$ 1	$ 1
METC \| Income Taxes Recoverable Related to Implementation of the Michigan Corporate Income Tax
Regulatory Assets
Regulatory asset, amortization period				32 years
ITC Great Plains \| Regulatory Deferrals
Regulatory Assets
Regulatory asset, amortization period			10 years

GOODWILL AND INTANGIBLE ASSETS Future Amortization Expense (Details) $ in Millions	Dec. 31, 2021 USD ($)
Future Amortization Expense
2019	$ 3
2020	4
2021	3
2022	2
2023	2
2024 and thereafter	12
Total	$ 26

PROPERTY, PLANT AND EQUIPMENT (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment
Total	$ 12,160	$ 11,382
Less: Accumulated depreciation and amortization	(2,199)	(2,055)
Property, plant and equipment, net	9,961	9,327
Regulated Operating Subsidiaries
Property, Plant and Equipment
Property, plant and equipment in service	11,434	10,661
Construction work in progress	529	523
Capital equipment inventory	96	103
Other	87	81
ITC Holding and Other
Property, Plant and Equipment
ITC Holdings and other	$ 14	$ 14

DEBT Annual Maturities (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Maturities of Debt
2019	$ 655
2020	250
2021	804
2022	0
2023	400
2027 and thereafter	4,593
Total	$ 6,702	$ 6,405

DEBT Interest Rate Swap Agreements (Details) - USD ($)	1 Months Ended			12 Months Ended
DEBT Interest Rate Swap Agreements (Details) - USD ($)	Dec. 31, 2021	Nov. 30, 2021	Jul. 31, 2021	Dec. 31, 2021	Dec. 17, 2021	Dec. 16, 2021	Dec. 14, 2021	Nov. 08, 2021	Nov. 05, 2021	Nov. 01, 2021	Jul. 20, 2021	Dec. 31, 2020
Interest Rate Swaps
Derivative, Fixed Interest Rate	1.471%	1.544%		1.471%	1.475%	1.489%	1.56%	1.497%	1.492%	1.581%	1.113%
Derivative, Notional Amount	$ 375,000,000	$ 50,000,000		$ 375,000,000	$ 45,000,000	$ 50,000,000	$ 50,000,000	$ 45,000,000	$ 45,000,000	$ 45,000,000	$ 45,000,000
Document Period End Date				Dec. 31, 2021
Line of Credit Facilities and Other Debt, Total Amount Outstanding	329,000,000			$ 329,000,000								$ 198,000,000
Commercial Paper	155,000,000			155,000,000								67,000,000
ITC Holdings
Interest Rate Swaps
Line of Credit Facilities and Other Debt, Total Amount Outstanding	$ 39,000,000			39,000,000								$ 37,000,000
Interest Rate Swap [Member]
Interest Rate Swaps
Derivative, Term of Contract	5 years	5 years	5 years
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member]
Interest Rate Swaps
Derivative Asset, Fair Value, Gross Liability	$ 2,000,000			$ 2,000,000

FAIR VALUE MEASUREMENTS Assets Measured at Fair Value Subject to Three-Tier Hierarchy (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring Basis
Book value of revolving credit agreements and term loan credit agreements	$ 329	$ 198
Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Total - assets	63	63
Cash Equivalents		1
Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Total - assets	2
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Total - assets		0
Mutual fund - fixed income securities [Member] \| Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Equity Securities, FV-NI	51	52
Mutual fund - equity securities [Member] \| Fair Value, Inputs, Level 1
Fair Value, Assets and Liabilities Measured on Recurring Basis
Equity Securities, FV-NI	12	$ 10
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring Basis
Equity Securities, FV-NI	$ 2

FAIR VALUE MEASUREMENTS Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring Basis
Fair value of long-term debt and debt maturing within one year, excluding revolving and term loan credit agreements and commercial paper	$ 6,995	$ 7,119
Book value of long-term debt and debt maturing within one year, net of discount and deferred financing fees and excluding revolving and term loan credit agreements and commercial paper	6,179	6,097
Book value of revolving credit agreements and term loan credit agreements	$ 329	$ 198

RETIREMENT BENEFITS AND ASSETS HELD IN TRUST Projected Benefit Payments (Details) $ in Millions	Dec. 31, 2021 USD ($)
Defined Benefit Plans
Defined Benefit Plan Disclosure
2018	$ 8
2019	9
2020	9
2021	10
2022	10
2023 through 2027	63
Other Postretirement Benefits Plan
Defined Benefit Plan Disclosure
2018	2
2019	2
2020	2
2021	3
2022	3
2023 through 2027	$ 22

STOCKHOLDER'S EQUITY Additional Information (Details) - Scenario, Forecast $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Tax (less than $1 million)	$ 2
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	$ 4

SHARE-BASED COMPENSATION AND EMPLOYEE SHARE PURCHASE PLAN Performance Based Units (Details) - Performance Based Units (PBUs) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 53	$ 42
2017 Omnibus Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 72	59
PBUs or SBUs at December 31, 2018	900,951
Granted	314,940
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares	(291,325)
Forfeited	(25,474)
PBUs or SBUs at December 31, 2019	899,092
Accounts Payable and Accrued Liabilities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 28	20
Other Liabilities [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding	$ 25	$ 22

RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
	Jan. 27, 2022	Dec. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Apr. 30, 2020
Related Party Transaction [Line Items]
Intercompany receivables (less than $1 million)			$ 2	$ 1
Intercompany payables (less than $1 million)			1	1
Related Party Charges for Corporate expenses recorded in general and administrative expense (less than $1 million)					$ 10
Related Party Transaction, Other Revenues from Transactions with Related Party (2016 less than $1 million)				2	1
Payments of Dividends		$ 250	232	330	$ 250
Revenue from Related Parties			$ 2	$ 2
Intercompany tax payable to subsidiaries						$ 2
Subsequent Event
Related Party Transaction [Line Items]
Payments of Dividends	$ 64

SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT General (Details) - Regulated Operating Subsidiaries	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
FERC approved capital structure, equity percentage	60.00%
FERC approved capital structure, debt percentage	40.00%