BNY MELLON FAMILY OF FUNDS
(Money Market Funds,
other than Treasury Only and Government Only Funds)
Supplement to Current Summary Prospectus and Prospectus
*******
GEN-STK-1023
Oct. 04, 2023 |
|---|
| DREYFUS CASH MANAGEMENT | DREYFUS CASH MANAGEMENT |
| DREYFUS CASH MANAGEMENT |
BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| Label | Element | Value |
|---|---|---|
| DREYFUS CASH MANAGEMENT | DREYFUS CASH MANAGEMENT | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Supplement to Prospectus [Text Block] | rr_SupplementToProspectusTextBlock | BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| Risk/Return [Heading] | rr_RiskReturnHeading | DREYFUS CASH MANAGEMENT |
| Risk [Heading] | rr_RiskHeading | The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| DREYFUS CASH MANAGEMENT | DREYFUS CASH MANAGEMENT | Risk Money Market Fund May Impose Fees or Suspend Sales [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | The fund may no longer impose a fee upon the sale of fund shares (a "liquidity fee") or temporarily suspend the ability to sell fund shares (a redemption "gate") if the fund's liquidity falls below required minimums because of market conditions or other factors. |
| DREYFUS CASH MANAGEMENT | DREYFUS CASH MANAGEMENT | Liquidity fee and/or redemption gate risk [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | References to "Liquidity fee and/or redemption gate risk" as a principal risk in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks" and "Fund Details – Investment Risks" in the fund's prospectus are removed. |
Oct. 04, 2023 |
|---|
| DREYFUS TAX EXEMPT CASH MANAGEMENT FUNDS | DREYFUS TAX EXEMPT CASH MANAGEMENT FUND |
| DREYFUS TAX EXEMPT CASH MANAGEMENT FUND |
BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| Label | Element | Value |
|---|---|---|
| DREYFUS TAX EXEMPT CASH MANAGEMENT FUNDS | DREYFUS TAX EXEMPT CASH MANAGEMENT FUND | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Supplement to Prospectus [Text Block] | rr_SupplementToProspectusTextBlock | BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| Risk/Return [Heading] | rr_RiskReturnHeading | DREYFUS TAX EXEMPT CASH MANAGEMENT FUND |
| Risk [Heading] | rr_RiskHeading | The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| DREYFUS TAX EXEMPT CASH MANAGEMENT FUNDS | DREYFUS TAX EXEMPT CASH MANAGEMENT FUND | Risk Money Market Fund May Impose Fees or Suspend Sales [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | The fund may no longer impose a fee upon the sale of fund shares (a "liquidity fee") or temporarily suspend the ability to sell fund shares (a redemption "gate") if the fund's liquidity falls below required minimums because of market conditions or other factors. |
| DREYFUS TAX EXEMPT CASH MANAGEMENT FUNDS | DREYFUS TAX EXEMPT CASH MANAGEMENT FUND | Liquidity fee and/or redemption gate risk [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | References to "Liquidity fee and/or redemption gate risk" as a principal risk in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks" and "Fund Details – Investment Risks" in the fund's prospectus are removed. |
Oct. 04, 2023 |
|---|
| GENERAL MONEY MARKET FUND, INC. | GENERAL MONEY MARKET FUND, INC |
| GENERAL MONEY MARKET FUND, INC |
BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| Label | Element | Value |
|---|---|---|
| GENERAL MONEY MARKET FUND, INC. | GENERAL MONEY MARKET FUND, INC | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Supplement to Prospectus [Text Block] | rr_SupplementToProspectusTextBlock | BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| Risk/Return [Heading] | rr_RiskReturnHeading | GENERAL MONEY MARKET FUND, INC |
| Risk [Heading] | rr_RiskHeading | The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| GENERAL MONEY MARKET FUND, INC. | GENERAL MONEY MARKET FUND, INC | Risk Money Market Fund May Impose Fees or Suspend Sales [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | The fund may no longer impose a fee upon the sale of fund shares (a "liquidity fee") or temporarily suspend the ability to sell fund shares (a redemption "gate") if the fund's liquidity falls below required minimums because of market conditions or other factors. |
| GENERAL MONEY MARKET FUND, INC. | GENERAL MONEY MARKET FUND, INC | Liquidity fee and/or redemption gate risk [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | References to "Liquidity fee and/or redemption gate risk" as a principal risk in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks" and "Fund Details – Investment Risks" in the fund's prospectus are removed. |
Oct. 04, 2023 |
|---|
| GENERAL MUNICIPAL MONEY MARKET FUNDS, INC. | General Municipal Money Market Funds, Inc. |
| General Municipal Money Market Funds, Inc. |
BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| Label | Element | Value |
|---|---|---|
| GENERAL MUNICIPAL MONEY MARKET FUNDS, INC. | General Municipal Money Market Funds, Inc. | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Supplement to Prospectus [Text Block] | rr_SupplementToProspectusTextBlock | BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| Risk/Return [Heading] | rr_RiskReturnHeading | General Municipal Money Market Funds, Inc. |
| Risk [Heading] | rr_RiskHeading | The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| GENERAL MUNICIPAL MONEY MARKET FUNDS, INC. | General Municipal Money Market Funds, Inc. | Risk Money Market Fund May Impose Fees or Suspend Sales [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | The fund may no longer impose a fee upon the sale of fund shares (a "liquidity fee") or temporarily suspend the ability to sell fund shares (a redemption "gate") if the fund's liquidity falls below required minimums because of market conditions or other factors. |
| GENERAL MUNICIPAL MONEY MARKET FUNDS, INC. | General Municipal Money Market Funds, Inc. | Liquidity fee and/or redemption gate risk [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | References to "Liquidity fee and/or redemption gate risk" as a principal risk in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks" and "Fund Details – Investment Risks" in the fund's prospectus are removed. |
Oct. 04, 2023 |
|---|
| GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND | GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND |
| GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND |
BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| Label | Element | Value |
|---|---|---|
| GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND | GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Supplement to Prospectus [Text Block] | rr_SupplementToProspectusTextBlock | BNY MELLON FAMILY OF FUNDS Supplement to Current Summary Prospectus and Prospectus |
| Risk/Return [Heading] | rr_RiskReturnHeading | GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND |
| Risk [Heading] | rr_RiskHeading | The following information supersedes and replaces any contrary information in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks," "Fund Details – Investment Risks" and "Shareholder Guide – Buying and Selling Shares – Potential Restrictions on Fund Redemptions—Fees and Gates" in the fund's prospectus: |
| GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND | GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND | Risk Money Market Fund May Impose Fees or Suspend Sales [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | The fund may no longer impose a fee upon the sale of fund shares (a "liquidity fee") or temporarily suspend the ability to sell fund shares (a redemption "gate") if the fund's liquidity falls below required minimums because of market conditions or other factors. |
| GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND | GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND | Liquidity fee and/or redemption gate risk [Member] | ||
| Risk/Return: | rr_RiskReturnAbstract | |
| Risk [Text Block] | rr_RiskTextBlock | References to "Liquidity fee and/or redemption gate risk" as a principal risk in the sections "Principal Risks" in the fund's summary prospectus and "Fund Summary – Principal Risks" and "Fund Details – Investment Risks" in the fund's prospectus are removed. |
{
"version": "2.2",
"instance": {
"ck0000759667-20231004.htm": {
"nsprefix": "ck0000759667",
"nsuri": "http://www.dreyfus.com/20231004",
"dts": {
"inline": {
"local": [
"ck0000759667-20231004.htm"
]
},
"schema": {
"local": [
"ck0000759667-20231004.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/lrr/role/negated-2009-12-16.xsd",
"https://www.xbrl.org/dtr/type/2022-03-31/types.xsd",
"https://xbrl.sec.gov/dei/2023/dei-2023.xsd",
"https://xbrl.sec.gov/rr/2023/rr-2023.xsd"
]
},
"calculationLink": {
"local": [
"ck0000759667-20231004_cal.xml"
]
},
"definitionLink": {
"local": [
"ck0000759667-20231004_def.xml"
]
},
"labelLink": {
"local": [
"ck0000759667-20231004_lab.xml"
]
},
"presentationLink": {
"local": [
"ck0000759667-20231004_pre.xml"
]
}
},
"keyStandard": 14,
"keyCustom": 0,
"axisStandard": 4,
"axisCustom": 0,
"memberStandard": 1,
"memberCustom": 29,
"hidden": {
"total": 36,
"http://xbrl.sec.gov/dei/2023": 30,
"http://xbrl.sec.gov/rr/2023": 6
},
"contextCount": 34,
"entityCount": 1,
"segmentCount": 30,
"elementCount": 238,
"unitCount": 0,
"baseTaxonomies": {
"http://xbrl.sec.gov/rr/2023": 26,
"http://xbrl.sec.gov/dei/2023": 30
},
"report": {
"R1": {
"role": "http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"longName": "000001 - Document - Document and Entity Information",
"shortName": "Document and Entity Information",
"isDefault": "true",
"groupType": "document",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "1",
"firstAnchor": null,
"uniqueAnchor": null
},
"R2": {
"role": "http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"longName": "020000 - Document - Risk/Return Summary {Unlabeled} - DREYFUS CASH MANAGEMENT",
"shortName": "Risk/Return Summary- DREYFUS CASH MANAGEMENT",
"isDefault": "false",
"groupType": "document",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "2",
"firstAnchor": {
"contextRef": "c5",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": null
},
"R3": {
"role": "http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"longName": "020001 - Disclosure - Risk/Return Detail Data {Elements} - DREYFUS CASH MANAGEMENT",
"shortName": "Risk/Return Detail Data- DREYFUS CASH MANAGEMENT",
"isDefault": "false",
"groupType": "disclosure",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "3",
"firstAnchor": {
"contextRef": "c5",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": {
"contextRef": "c10",
"name": "rr:RiskTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:RiskTextBlock",
"rr:RiskTextBlock",
"rr:RiskTextBlock",
"rr:RiskTextBlock",
"p",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"unique": true
}
},
"R4": {
"role": "http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"longName": "020002 - Document - Risk/Return Summary {Unlabeled} - DREYFUS TAX EXEMPT CASH MANAGEMENT FUND",
"shortName": "Risk/Return Summary- DREYFUS TAX EXEMPT CASH MANAGEMENT FUND",
"isDefault": "false",
"groupType": "document",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "4",
"firstAnchor": {
"contextRef": "c12",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": null
},
"R5": {
"role": "http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"longName": "020003 - Disclosure - Risk/Return Detail Data {Elements} - DREYFUS TAX EXEMPT CASH MANAGEMENT FUND",
"shortName": "Risk/Return Detail Data- DREYFUS TAX EXEMPT CASH MANAGEMENT FUND",
"isDefault": "false",
"groupType": "disclosure",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "5",
"firstAnchor": {
"contextRef": "c12",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": {
"contextRef": "c14",
"name": "rr:RiskTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:RiskTextBlock",
"rr:RiskTextBlock",
"rr:RiskTextBlock",
"p",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"unique": true
}
},
"R6": {
"role": "http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"longName": "020004 - Document - Risk/Return Summary {Unlabeled} - GENERAL MONEY MARKET FUND, INC",
"shortName": "Risk/Return Summary- GENERAL MONEY MARKET FUND, INC",
"isDefault": "false",
"groupType": "document",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "6",
"firstAnchor": {
"contextRef": "c16",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": null
},
"R7": {
"role": "http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"longName": "020005 - Disclosure - Risk/Return Detail Data {Elements} - GENERAL MONEY MARKET FUND, INC",
"shortName": "Risk/Return Detail Data- GENERAL MONEY MARKET FUND, INC",
"isDefault": "false",
"groupType": "disclosure",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "7",
"firstAnchor": {
"contextRef": "c16",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": {
"contextRef": "c20",
"name": "rr:RiskTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:RiskTextBlock",
"rr:RiskTextBlock",
"p",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"unique": true
}
},
"R8": {
"role": "http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc",
"longName": "020006 - Document - Risk/Return Summary {Unlabeled} - General Municipal Money Market Funds, Inc.",
"shortName": "Risk/Return Summary- General Municipal Money Market Funds, Inc.",
"isDefault": "false",
"groupType": "document",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "8",
"firstAnchor": {
"contextRef": "c22",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": null
},
"R9": {
"role": "http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"longName": "020007 - Disclosure - Risk/Return Detail Data {Elements} - General Municipal Money Market Funds, Inc.",
"shortName": "Risk/Return Detail Data- General Municipal Money Market Funds, Inc.",
"isDefault": "false",
"groupType": "disclosure",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "9",
"firstAnchor": {
"contextRef": "c22",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": {
"contextRef": "c26",
"name": "rr:RiskTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:RiskTextBlock",
"p",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"unique": true
}
},
"R10": {
"role": "http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"longName": "020008 - Document - Risk/Return Summary {Unlabeled} - GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND",
"shortName": "Risk/Return Summary- GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND",
"isDefault": "false",
"groupType": "document",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "10",
"firstAnchor": {
"contextRef": "c28",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": null
},
"R11": {
"role": "http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"longName": "020009 - Disclosure - Risk/Return Detail Data {Elements} - GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND",
"shortName": "Risk/Return Detail Data- GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND",
"isDefault": "false",
"groupType": "disclosure",
"subGroupType": "",
"menuCat": "Risk/Return",
"order": "11",
"firstAnchor": {
"contextRef": "c28",
"name": "rr:SupplementToProspectusTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"rr:SupplementToProspectusTextBlock",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"first": true
},
"uniqueAnchor": {
"contextRef": "c32",
"name": "rr:RiskTextBlock",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"p",
"body",
"html"
],
"reportCount": 1,
"baseRef": "ck0000759667-20231004.htm",
"unique": true
}
}
},
"tag": {
"ck0000759667_GENERALNEWYORKMUNICIPALMONEYMARKETFUNDMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "GENERALNEWYORKMUNICIPALMONEYMARKETFUNDMember",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND [Member]",
"label": "GENERALNEWYORKMUNICIPALMONEYMARKETFUNDMember"
}
}
},
"auth_ref": []
},
"rr_ExpensesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_NetExpensesOverAssets",
"weight": 1.0,
"order": 0.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses (as a percentage of Assets)",
"label": "Expenses (as a percentage of Assets)",
"documentation": "Total Annual Fund Operating Expenses. If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds. If the prospectus offers more than one Class of a Multiple Class Fund or more than one Feeder Fund that invests in the same Master Fund, provide a separate response for each Class or Feeder Fund. Base the percentages of \"Annual Fund Operating Expenses\" on amounts incurred during the Fund's most recent fiscal year, but include in expenses amounts that would have been incurred absent expense reimbursement or fee waiver arrangements. If the Fund has changed its fiscal year and, as a result, the most recent fiscal year is less than three months, use the fiscal year prior to the most recent fiscal year as the basis for determining \"Annual Fund Operating Expenses.\""
}
}
},
"auth_ref": [
"r25"
]
},
"rr_PortfolioTurnoverHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PortfolioTurnoverHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Portfolio Turnover [Heading]",
"label": "Portfolio Turnover [Heading]",
"documentation": "Disclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item."
}
}
},
"auth_ref": [
"r32"
]
},
"rr_AverageAnnualReturnColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Average Annual Return, Column Name",
"label": "Average Annual Return, Column Name",
"documentation": "This item represents Average Annual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion."
}
}
},
"auth_ref": [
"r55"
]
},
"rr_RiskAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskAxis",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Risk [Axis]",
"documentation": "The Risk Axis has members that distinguish different !TODO!"
}
}
},
"auth_ref": [
"r46"
]
},
"rr_BarChartNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart Narrative [Text Block]",
"label": "Bar Chart Narrative [Text Block]",
"documentation": "Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future."
}
}
},
"auth_ref": [
"r52"
]
},
"rr_PerformanceInformationIllustratesVariabilityOfReturns": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceInformationIllustratesVariabilityOfReturns",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Information Illustrates Variability of Returns [Text]",
"label": "Performance Information Illustrates Variability of Returns [Text]",
"documentation": "Include the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future."
}
}
},
"auth_ref": [
"r52"
]
},
"rr_PerformanceTableNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Narrative",
"label": "Performance Table Narrative",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____). For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by paragraph (c)(2)(i) (e.g., by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance)."
}
}
},
"auth_ref": [
"r70"
]
},
"rr_DistributionOrSimilarNon12b1FeesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "DistributionOrSimilarNon12b1FeesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_ExpensesOverAssets",
"weight": 1.0,
"order": 2.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Distribution or Similar (Non 12b-1) Fees",
"label": "Distribution or Similar (Non 12b-1) Fees",
"documentation": "Distribution [and/or Service] (12b-1) Fees\" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of \"Other Expenses,\" disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan."
}
}
},
"auth_ref": [
"r21"
]
},
"rr_OtherExpensesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "OtherExpensesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_ExpensesOverAssets",
"weight": 1.0,
"order": 3.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Other Expenses (as a percentage of Assets):",
"label": "Other Expenses (as a percentage of Assets):",
"documentation": "\"Other Expenses\" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). \"Other Expenses\" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's \"Other Expenses,\" disclose in a footnote to the table what \"Other Expenses\" would have been had the extraordinary expenses been included."
}
}
},
"auth_ref": [
"r22"
]
},
"rr_PerformanceTableMarketIndexChanged": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableMarketIndexChanged",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Market Index Changed",
"label": "Performance Table Market Index Changed",
"documentation": "If the Fund selects an index that is different from the index used in a table for the immediately preceding period, explain the reason(s) for the selection of a different index and provide information for both the newly selected and the former index."
}
}
},
"auth_ref": [
"r61"
]
},
"ck0000759667_GENERALMUNICIPALMONEYMARKETFUNDSINCMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "GENERALMUNICIPALMONEYMARKETFUNDSINCMember",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "GENERAL MUNICIPAL MONEY MARKET FUNDS, INC. [Member]",
"label": "GENERALMUNICIPALMONEYMARKETFUNDSINCMember"
}
}
},
"auth_ref": []
},
"rr_DistributionAndService12b1FeesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "DistributionAndService12b1FeesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_ExpensesOverAssets",
"weight": 1.0,
"order": 1.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Distribution and Service (12b-1) Fees",
"label": "Distribution and Service (12b-1) Fees",
"documentation": "Distribution [and/or Service] (12b-1) Fees\" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of \"Other Expenses,\" disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan."
}
}
},
"auth_ref": [
"r43"
]
},
"rr_AnnualReturn2022": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2022",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2022",
"label": "Annual Return 2022",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_CIK0000803950Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "CIK0000803950Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND"
],
"lang": {
"en-us": {
"role": {
"label": "C I K 0000803950 [Member]",
"terseLabel": "GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND"
}
}
},
"auth_ref": []
},
"rr_PerformanceTableDoesReflectSalesLoads": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableDoesReflectSalesLoads",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Does Reflect Sales Loads",
"label": "Performance Table Does Reflect Sales Loads",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)"
}
}
},
"auth_ref": [
"r54"
]
},
"rr_ManagementFeesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ManagementFeesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_ExpensesOverAssets",
"weight": 1.0,
"order": 0.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Management Fees (as a percentage of Assets)",
"label": "Management Fees (as a percentage of Assets)",
"documentation": "Management Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as \"Other Expenses.\""
}
}
},
"auth_ref": [
"r20"
]
},
"rr_BarChartLowestQuarterlyReturn": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartLowestQuarterlyReturn",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Lowest Quarterly Return",
"label": "Lowest Quarterly Return",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_OperatingExpensesCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "OperatingExpensesCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Operating Expenses Caption [Text]",
"label": "Operating Expenses Caption [Text]",
"documentation": "Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)"
}
}
},
"auth_ref": [
"r42"
]
},
"ck0000759667_C000157127Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000157127Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus Money Market Fund-Premier Shares (GENERAL MONEY MARKET FUND, INC)",
"terseLabel": "Dreyfus Money Market Fund-Premier Shares"
}
}
},
"auth_ref": []
},
"rr_RiskNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Narrative [Text Block] (Deprecated 2023-01-31)",
"label": "Risk Narrative [Text Block] (Deprecated 2023-01-31)",
"documentation": "Narrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund."
}
}
},
"auth_ref": [
"r46"
]
},
"rr_AnnualReturn2021": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2021",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2021",
"label": "Annual Return 2021",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ThirtyDayYieldPhone": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ThirtyDayYieldPhone",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Thirty Day Yield Phone",
"label": "Thirty Day Yield Phone",
"documentation": "A Fund (other than a Money Market Fund) may include the Fund's yield calculated under Item 21(b)(2). Any Fund may include its tax-equivalent yield calculated under Item 21. If a Fund's yield is included, provide a toll-free (or collect) telephone number that investors can use to obtain current yield information."
}
}
},
"auth_ref": [
"r62"
]
},
"rr_AverageAnnualReturnYear01": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnYear01",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "1 Year",
"label": "1 Year",
"documentation": "Return Before Taxes."
}
}
},
"auth_ref": [
"r56"
]
},
"rr_AnnualReturnCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturnCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return Caption [Text]",
"label": "Annual Return Caption [Text]",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table."
}
}
},
"auth_ref": [
"r65"
]
},
"rr_Component1OtherExpensesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "Component1OtherExpensesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_OtherExpensesOverAssets",
"weight": 1.0,
"order": 0.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Component1 Other Expenses",
"label": "Component1 Other Expenses",
"documentation": "The Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising \"Other Expenses,\" but must include a total of all \"Other Expenses.\" Alternatively, the Fund may include the components of \"Other Expenses\" in a parenthetical to the caption."
}
}
},
"auth_ref": [
"r24"
]
},
"rr_AverageAnnualReturnCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Average Annual Return, Caption",
"label": "Average Annual Return, Caption",
"documentation": "This item represents Average Annual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion."
}
}
},
"auth_ref": [
"r69"
]
},
"ck0000759667_GENERALMONEYMARKETFUNDINCMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "GENERALMONEYMARKETFUNDINCMember",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "GENERAL MONEY MARKET FUND, INC. [Member]",
"label": "GENERALMONEYMARKETFUNDINCMember"
}
}
},
"auth_ref": []
},
"rr_RiskReturnAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskReturnAbstract",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Risk/Return:"
}
}
},
"auth_ref": []
},
"rr_OperatingExpensesColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "OperatingExpensesColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Operating Expenses Column [Text]",
"label": "Operating Expenses Column [Text]",
"documentation": "Annual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)"
}
}
},
"auth_ref": [
"r42"
]
},
"rr_AnnualReturn1991": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1991",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1991",
"label": "Annual Return 1991",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_PerformanceTableUsesHighestFederalRate": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableUsesHighestFederalRate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Uses Highest Federal Rate",
"label": "Performance Table Uses Highest Federal Rate",
"documentation": "Provide a brief explanation that after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes."
}
}
},
"auth_ref": [
"r54"
]
},
"rr_LowestQuarterlyReturnLabel": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "LowestQuarterlyReturnLabel",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Lowest Quarterly Return, Label",
"label": "Lowest Quarterly Return, Label",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_BarChartHighestQuarterlyReturnDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartHighestQuarterlyReturnDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Highest Quarterly Return, Date",
"label": "Highest Quarterly Return, Date",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ShareholderFeesTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ShareholderFeesTableTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Shareholder Fees [Table]",
"documentation": "Contains a command for the SEC Viewer for the role corresponding to ShareholderFeesData."
}
}
},
"auth_ref": []
},
"rr_PerformanceTableNotRelevantToTaxDeferred": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableNotRelevantToTaxDeferred",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Not Relevant to Tax Deferred",
"label": "Performance Table Not Relevant to Tax Deferred",
"documentation": "Provide a brief explanation that the actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts."
}
}
},
"auth_ref": [
"r71"
]
},
"ck0000759667_DREYFUSTAXEXEMPTCASHMANAGEMENTFUNDSMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "DREYFUSTAXEXEMPTCASHMANAGEMENTFUNDSMember",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "DREYFUS TAX EXEMPT CASH MANAGEMENT FUNDS [Member]",
"label": "DREYFUSTAXEXEMPTCASHMANAGEMENTFUNDSMember"
}
}
},
"auth_ref": []
},
"ck0000759667_S000000123Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "S000000123Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND"
],
"lang": {
"en-us": {
"role": {
"label": "GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND"
}
}
},
"auth_ref": []
},
"rr_ThirtyDayYieldCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ThirtyDayYieldCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Thirty Day Yield Caption",
"label": "Thirty Day Yield Caption",
"documentation": "A Fund (other than a Money Market Fund) may include the Fund's yield calculated under Item 21(b)(2). Any Fund may include its tax-equivalent yield calculated under Item 21. If a Fund's yield is included, provide a toll-free (or collect) telephone number that investors can use to obtain current yield information."
}
}
},
"auth_ref": [
"r62"
]
},
"rr_PerformanceTableClosingTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableClosingTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Closing [Text Block]",
"label": "Performance Table Closing [Text Block]",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)"
}
}
},
"auth_ref": [
"r54"
]
},
"rr_BarChartLowestQuarterlyReturnDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartLowestQuarterlyReturnDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Lowest Quarterly Return, Date",
"label": "Lowest Quarterly Return, Date",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_RiskHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk [Heading]",
"label": "Risk [Heading]",
"documentation": "Narrative Risk Disclosure."
}
}
},
"auth_ref": [
"r45"
]
},
"rr_PerformanceTableExplanationAfterTaxHigher": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableExplanationAfterTaxHigher",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Explanation after Tax Higher",
"label": "Performance Table Explanation after Tax Higher",
"documentation": "If average annual total return (after taxes on distributions and redemption) is higher than average annual total return, the reason for this result may be explained."
}
}
},
"auth_ref": [
"r73"
]
},
"rr_ThirtyDayYieldColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ThirtyDayYieldColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Thirty Day Yield Column [Text]",
"label": "Thirty Day Yield Column [Text]",
"documentation": "A Fund (other than a Money Market Fund) may include the Fund's yield calculated under Item 21(b)(2). Any Fund may include its tax-equivalent yield calculated under Item 21. If a Fund's yield is included, provide a toll-free (or collect) telephone number that investors can use to obtain current yield information."
}
}
},
"auth_ref": [
"r62"
]
},
"rr_PerformanceTableHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Heading",
"label": "Performance Table Heading",
"documentation": "This item represents Average Annual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion."
}
}
},
"auth_ref": [
"r66"
]
},
"rr_MoneyMarketSevenDayTaxEquivalentYield": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MoneyMarketSevenDayTaxEquivalentYield",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Money Market Seven Day Tax Equivalent Yield",
"label": "Money Market Seven Day Tax Equivalent Yield",
"documentation": "Calculate a Money Market Fund's 7-day yield under Item 21(a); the Fund's average annual total return under Item 21(b)(1); and the Fund's average annual total return (after taxes on distributions) and average annual total return (after taxes on distributions and redemption) under Items 21(b)(2) and (3), respectively."
}
}
},
"auth_ref": [
"r60"
]
},
"rr_FeeWaiverOrReimbursementOverAssets": {
"xbrltype": "NonPositivePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "FeeWaiverOrReimbursementOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_NetExpensesOverAssets",
"weight": 1.0,
"order": 1.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Fee Waiver or Reimbursement",
"label": "Fee Waiver or Reimbursement",
"documentation": "Total Annual Fund Operating Expenses. If there were expense reimbursement or fee waiver arrangements that reduced any Fund operating expenses and will continue to reduce them for no less than one year from the effective date of the Fund's registration statement, a Fund may add two captions to the table one caption showing the amount of the expense reimbursement or fee waiver, and a second caption showing the Fund's net expenses after subtracting the fee reimbursement or expense waiver from the total fund operating expenses. The Fund should place these additional captions directly below the \"Total Annual Fund Operating Expenses\" caption of the table and should use appropriate descriptive captions, such as \"Fee Waiver [and/or Expense Reimbursement]\" and \"Total Annual Fund Operating Expenses After Fee Waiver [and/or Expense Reimbursement],\" respectively. If the Fund provides this disclosure, also disclose the period for which the expense reimbursement or fee waiver arrangement is expected to continue, and briefly describe who can terminate the arrangement and under what circumstances."
}
}
},
"auth_ref": [
"r37"
]
},
"rr_Component2OtherExpensesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "Component2OtherExpensesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_OtherExpensesOverAssets",
"weight": 1.0,
"order": 1.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Component2 Other Expenses",
"label": "Component2 Other Expenses",
"documentation": "The Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising \"Other Expenses,\" but must include a total of all \"Other Expenses.\" Alternatively, the Fund may include the components of \"Other Expenses\" in a parenthetical to the caption."
}
}
},
"auth_ref": [
"r36"
]
},
"rr_Component3OtherExpensesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "Component3OtherExpensesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_OtherExpensesOverAssets",
"weight": 1.0,
"order": 2.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Component3 Other Expenses",
"label": "Component3 Other Expenses",
"documentation": "The Fund may subdivide this caption into no more than three subcaptions that identify the largest expense or expenses comprising \"Other Expenses,\" but must include a total of all \"Other Expenses.\" Alternatively, the Fund may include the components of \"Other Expenses\" in a parenthetical to the caption."
}
}
},
"auth_ref": [
"r24"
]
},
"rr_PortfolioTurnoverTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PortfolioTurnoverTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Portfolio Turnover [Text Block]",
"label": "Portfolio Turnover [Text Block]",
"documentation": "Disclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item."
}
}
},
"auth_ref": [
"r10"
]
},
"rr_PerformanceNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Narrative [Text Block]",
"label": "Performance Narrative [Text Block]",
"documentation": "Risk/Return Bar Chart and Table."
}
}
},
"auth_ref": [
"r51"
]
},
"rr_RiskTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk [Text Block]",
"label": "Risk [Text Block]",
"documentation": "Text block containing a risk heading and narrative for a single risk."
}
}
},
"auth_ref": [
"r46"
]
},
"rr_AverageAnnualReturnLabel": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnLabel",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Label",
"label": "Label",
"documentation": "This item represents Average Annual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion."
}
}
},
"auth_ref": [
"r56"
]
},
"rr_AcquiredFundFeesAndExpensesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AcquiredFundFeesAndExpensesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": "rr_ExpensesOverAssets",
"weight": 1.0,
"order": 4.0
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Acquired Fund Fees and Expenses",
"label": "Acquired Fund Fees and Expenses",
"documentation": "Total Annual Fund Operating Expenses."
}
}
},
"auth_ref": [
"r37"
]
},
"rr_PerformanceTableFootnotesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableFootnotesTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Footnotes",
"label": "Performance Table Footnotes",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also should show the returns of an appropriate broad-based securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)"
}
}
},
"auth_ref": [
"r54"
]
},
"rr_AllRisksMember": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AllRisksMember",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "All Risks [Member]",
"label": "All Risks [Member]",
"documentation": "The default member of the Risk Axis."
}
}
},
"auth_ref": [
"r46"
]
},
"rr_ExpensesRepresentBothMasterAndFeeder": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesRepresentBothMasterAndFeeder",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses Represent Both Master and Feeder [Text]",
"label": "Expenses Represent Both Master and Feeder [Text]",
"documentation": "If the Fund is a Feeder Fund, reflect the aggregate expenses of the Feeder Fund and the Master Fund in a single fee table using the captions provided. In a footnote to the fee table, state that the table and Example reflect the expenses of both the Feeder and Master Funds."
}
}
},
"auth_ref": [
"r14"
]
},
"rr_ExpenseExampleHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example [Heading]",
"label": "Expense Example [Heading]",
"documentation": "Heading for Expense Example."
}
}
},
"auth_ref": [
"r30"
]
},
"rr_BarChartClosingTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartClosingTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart Closing [Text Block]",
"label": "Bar Chart Closing [Text Block]",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_AnnualReturn1990": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1990",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1990",
"label": "Annual Return 1990",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"rr_ThirtyDayTaxEquivalentYield": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ThirtyDayTaxEquivalentYield",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Thirty Day Tax Equivalent Yield",
"label": "Thirty Day Tax Equivalent Yield",
"documentation": "A Fund (other than a Money Market Fund) may include the Fund's yield calculated under Item 21(b)(2). Any Fund may include its tax-equivalent yield calculated under Item 21. If a Fund's yield is included, provide a toll-free (or collect) telephone number that investors can use to obtain current yield information."
}
}
},
"auth_ref": [
"r62"
]
},
"rr_RiskNondiversifiedStatus": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskNondiversifiedStatus",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Nondiversified Status [Text] (Deprecated 2023-01-31)",
"label": "Risk Nondiversified Status [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r50"
]
},
"ck0000759667_S000000018Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "S000000018Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT"
],
"lang": {
"en-us": {
"role": {
"label": "DREYFUS CASH MANAGEMENT"
}
}
},
"auth_ref": []
},
"rr_ExpensesRestatedToReflectCurrent": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesRestatedToReflectCurrent",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses Restated to Reflect Current [Text]",
"label": "Expenses Restated to Reflect Current [Text]",
"documentation": "In a footnote to the table, disclose that the expense information in the table has been restated to reflect current fees."
}
}
},
"auth_ref": [
"r26"
]
},
"rr_AnnualReturn1992": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1992",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1992",
"label": "Annual Return 1992",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"rr_ExpensesOtherExpensesHadExtraordinaryExpensesBeenIncluded": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesOtherExpensesHadExtraordinaryExpensesBeenIncluded",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses Other Expenses Had Extraordinary Expenses Been Included [Text]",
"label": "Expenses Other Expenses Had Extraordinary Expenses Been Included [Text]",
"documentation": "\"Other Expenses\" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's \"Other Expenses,\" disclose in a footnote to the table what \"Other Expenses\" would have been had the extraordinary expenses been included."
}
}
},
"auth_ref": [
"r23"
]
},
"ck0000759667_RiskReturnSummaryAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "RiskReturnSummaryAbstract",
"lang": {
"en-us": {
"role": {
"label": "Risk/Return Summary [Abstract]"
}
}
},
"auth_ref": []
},
"rr_ShareholderFeeOther": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ShareholderFeeOther",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Shareholder Fee, Other",
"label": "Shareholder Fee, Other",
"documentation": "Other Expenses"
}
}
},
"auth_ref": [
"r36"
]
},
"rr_ThirtyDayYield": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ThirtyDayYield",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Thirty Day Yield",
"label": "Thirty Day Yield",
"documentation": "A Fund (other than a Money Market Fund) may include the Fund's yield calculated under Item 21(b)(2). Any Fund may include its tax-equivalent yield calculated under Item 21. If a Fund's yield is included, provide a toll-free (or collect) telephone number that investors can use to obtain current yield information."
}
}
},
"auth_ref": [
"r62"
]
},
"rr_NetExpensesOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "NetExpensesOverAssets",
"calculation": {
"http://xbrl.sec.gov/rr/role/OperatingExpensesData": {
"parentTag": null,
"weight": null,
"order": null,
"root": true
}
},
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Net Expenses (as a percentage of Assets)",
"label": "Net Expenses (as a percentage of Assets)",
"documentation": "Total Annual Fund Operating Expenses."
}
}
},
"auth_ref": [
"r37"
]
},
"ck0000759667_C000000273Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000273Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus New York Municipal Money Market Fund - Wealth Shares (GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND)",
"terseLabel": "Dreyfus New York Municipal Money Market Fund - Wealth Shares"
}
}
},
"auth_ref": []
},
"rr_AnnualReturn2024": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2024",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2024",
"label": "Annual Return 2024",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_C000000269Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000269Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus National Municipal Money Market Fund - Wealth Shares (General Municipal Money Market Funds, Inc.)",
"terseLabel": "Dreyfus National Municipal Money Market Fund - Wealth Shares"
}
}
},
"auth_ref": []
},
"rr_StrategyPortfolioConcentration": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "StrategyPortfolioConcentration",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Strategy Portfolio Concentration [Text]",
"label": "Strategy Portfolio Concentration [Text]",
"documentation": "Principal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries."
}
}
},
"auth_ref": [
"r44"
]
},
"rr_AverageAnnualReturnYear05": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnYear05",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "5 Years",
"label": "5 Years",
"documentation": "Return Before Taxes."
}
}
},
"auth_ref": [
"r56"
]
},
"ck0000759667_C000000274Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000274Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus New York Municipal Money Market Fund - Service Shares (GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND)",
"terseLabel": "Dreyfus New York Municipal Money Market Fund - Service Shares"
}
}
},
"auth_ref": []
},
"rr_AnnualReturn2020": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2020",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2020",
"label": "Annual Return 2020",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_LiquidityFeeAndorRedemptionGateRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "LiquidityFeeAndorRedemptionGateRiskMember",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Liquidity fee and/or redemption gate risk [Member]",
"label": "Liquidity Fee Andor Redemption Gate Risk Member"
}
}
},
"auth_ref": []
},
"ck0000759667_C000223372Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000223372Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus New York Municipal Money Market Fund - Premier Shares (GENERAL NEW YORK MUNICIPAL MONEY MARKET FUND)",
"terseLabel": "Dreyfus New York Municipal Money Market Fund - Premier Shares"
}
}
},
"auth_ref": []
},
"rr_RiskMoneyMarketFundPriceFluctuates": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskMoneyMarketFundPriceFluctuates",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Money Market Fund Price Fluctuates [Text] (Deprecated 2023-01-31)",
"label": "Risk Money Market Fund Price Fluctuates [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r48"
]
},
"dei_DocumentCreationDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DocumentCreationDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Document Creation Date",
"documentation": "The date the document was made available and submitted, in YYYY-MM-DD format. The date of submission, date of acceptance by the recipient, and the document effective date are all potentially different."
}
}
},
"auth_ref": []
},
"ck0000759667_S000000098Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "S000000098Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND"
],
"lang": {
"en-us": {
"role": {
"label": "DREYFUS TAX EXEMPT CASH MANAGEMENT FUND"
}
}
},
"auth_ref": []
},
"rr_CoregistrantDomain": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "CoregistrantDomain",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Coregistrant [Domain]",
"documentation": "The default member of the Coregistrant axis. It represents any disclosure that applies to the registrant whose Central Index Key (CIK) is that of the default context."
}
}
},
"auth_ref": [
"r2"
]
},
"rr_ExpenseExampleFootnotesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleFootnotesTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example Footnotes [Text Block]",
"label": "Expense Example Footnotes [Text Block]",
"documentation": "The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher."
}
}
},
"auth_ref": [
"r9"
]
},
"rr_AnnualReturn2025": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2025",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2025",
"label": "Annual Return 2025",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_S000000121Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "S000000121Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "General Municipal Money Market Funds, Inc."
}
}
},
"auth_ref": []
},
"dei_DocumentEffectiveDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DocumentEffectiveDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Document Effective Date",
"documentation": "The date when a document, upon receipt and acceptance, becomes officially effective, in YYYY-MM-DD format. Usually it is a system-assigned date time value, but it may be declared by the submitter in some cases."
}
}
},
"auth_ref": []
},
"rr_AnnualFundOperatingExpensesTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualFundOperatingExpensesTableTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Fund Operating Expenses [Table]",
"documentation": "Contains a command for the SEC Viewer for the role corresponding to OperatingExpensesData."
}
}
},
"auth_ref": []
},
"rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "FeeWaiverOrReimbursementOverAssetsDateOfTermination",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Fee Waiver or Reimbursement over Assets, Date of Termination",
"label": "Fee Waiver or Reimbursement over Assets, Date of Termination",
"documentation": "This element represents the date of expected termination of any expense reimbursement or fee waiver arrangements that reduce any Fund operating expenses (SEC Form N-1A 2006-09-14 A.3.table.1.11 Total Annual Fund Operating Expenses A.3.instructions.3.e)."
}
}
},
"auth_ref": [
"r27"
]
},
"rr_AnnualReturn2023": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2023",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2023",
"label": "Annual Return 2023",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"dei_DocumentPeriodEndDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DocumentPeriodEndDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Document Period End Date",
"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."
}
}
},
"auth_ref": []
},
"rr_ExpenseBreakpointMinimumInvestmentRequiredAmount": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseBreakpointMinimumInvestmentRequiredAmount",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Breakpoint, Minimum Investment Required [Amount]",
"label": "Expense Breakpoint, Minimum Investment Required [Amount]",
"documentation": "This element represents the minimum level of investment required to qualify for discounted sales charges or fund expenses (SEC Form N-1A 2006-09-14 A.3.instructions.1.b)."
}
}
},
"auth_ref": [
"r11"
]
},
"rr_YearToDateReturnLabel": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "YearToDateReturnLabel",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Year to Date Return, Label",
"label": "Year to Date Return, Label",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_C000223373Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000223373Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Preferred Shares (DREYFUS CASH MANAGEMENT)",
"terseLabel": "Preferred Shares"
}
}
},
"auth_ref": []
},
"ck0000759667_C000000266Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000266Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus Money Market Fund-Service Shares (GENERAL MONEY MARKET FUND, INC)",
"terseLabel": "Dreyfus Money Market Fund-Service Shares"
}
}
},
"auth_ref": []
},
"rr_RiskReturnHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskReturnHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk/Return [Heading]",
"label": "Risk/Return [Heading]",
"documentation": "Risk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicated"
}
}
},
"auth_ref": [
"r4"
]
},
"rr_PortfolioTurnoverRate": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PortfolioTurnoverRate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Portfolio Turnover, Rate",
"label": "Portfolio Turnover, Rate",
"documentation": "This element represents the rate of portfolio turnover presented as a percentage (SEC Form N-1A 2006-09-14 A.3.example.3 Portfolio Turnover A.3.instructions.5 Portfolio Turnover)."
}
}
},
"auth_ref": [
"r10"
]
},
"rr_PerformanceTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Performance [Table]",
"documentation": "Contains a command for the SEC Viewer for the role corresponding to PerformanceTableData."
}
}
},
"auth_ref": []
},
"rr_BarChartAndPerformanceTableHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartAndPerformanceTableHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart and Performance Table [Heading]",
"label": "Bar Chart and Performance Table [Heading]",
"documentation": "Risk/Return Bar Chart and Table."
}
}
},
"auth_ref": [
"r51"
]
},
"rr_ExpenseExampleWithRedemptionTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleWithRedemptionTableTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Expense Example, With Redemption [Table]",
"documentation": "Contains a command for the SEC Viewer for the role corresponding to ExpenseExample."
}
}
},
"auth_ref": []
},
"ck0000759667_CIK0000703153Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "CIK0000703153Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "C I K 0000703153 [Member]",
"terseLabel": "GENERAL MUNICIPAL MONEY MARKET FUNDS, INC."
}
}
},
"auth_ref": []
},
"rr_BarChartTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartTableTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Bar Chart [Table]",
"documentation": "Contains a command for the SEC Viewer for the role corresponding to BarChartData."
}
}
},
"auth_ref": []
},
"rr_BarChartFootnotesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartFootnotesTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart Footnotes [Text Block]",
"label": "Bar Chart Footnotes [Text Block]",
"documentation": "Multiple Class Funds."
}
}
},
"auth_ref": [
"r63"
]
},
"rr_PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableFootnotesReasonPerformanceInformationForClassDifferentFromImmediatelyPrecedingPeriod",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]",
"label": "Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period [Text]",
"documentation": "This element represents disclosure when presented performance information for a class is different from the class selected for the most immediately preceding period (Form N-1A, Item 2., Instr. 3.(c).(ii).(D))."
}
}
},
"auth_ref": [
"r66"
]
},
"rr_PerformanceTableOneClassOfAfterTaxShown": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceTableOneClassOfAfterTaxShown",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Table One Class of after Tax Shown [Text]",
"label": "Performance Table One Class of after Tax Shown [Text]",
"documentation": "Provide a brief explanation that if the Fund is a Multiple Class Fund that offers more than one Class in the prospectus, after-tax returns are shown for only one Class and after-tax returns for other Classes will vary."
}
}
},
"auth_ref": [
"r54",
"r72"
]
},
"rr_ExpenseExampleNoRedemptionNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, No Redemption Narrative [Text Block]",
"label": "Expense Example, No Redemption Narrative [Text Block]",
"documentation": "Contains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption."
}
}
},
"auth_ref": []
},
"rr_BarChartHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart [Heading]",
"label": "Bar Chart [Heading]",
"documentation": "Risk/Return Bar Chart and Table."
}
}
},
"auth_ref": [
"r51"
]
},
"rr_SupplementToProspectusTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "SupplementToProspectusTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Supplement to Prospectus [Text Block]",
"label": "Supplement to Prospectus [Text Block]",
"documentation": "This element contains the text of a prospectus supplement (submission type 497) not already contained in an element containing amended text or other data from a previous submission."
}
}
},
"auth_ref": [
"r1"
]
},
"rr_AcquiredFundFeesAndExpensesBasedOnEstimates": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AcquiredFundFeesAndExpensesBasedOnEstimates",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Acquired Fund Fees and Expenses, Based on Estimates [Text]",
"label": "Acquired Fund Fees and Expenses, Based on Estimates [Text]",
"documentation": "This element represents a statement that \"Acquired Fund\" (as defined) fees and expenses for the current year are based on estimates."
}
}
},
"auth_ref": [
"r28"
]
},
"rr_OtherExpensesNewFundBasedOnEstimates": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "OtherExpensesNewFundBasedOnEstimates",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Other Expenses, New Fund, Based on Estimates [Text]",
"label": "Other Expenses, New Fund, Based on Estimates [Text]",
"documentation": "This element represents the disclosure for new funds that \"Other Expenses\" are based on estimated amounts for the current fiscal year."
}
}
},
"auth_ref": [
"r33"
]
},
"rr_ExpensesDeferredChargesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesDeferredChargesTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses Deferred Charges [Text Block]",
"label": "Expenses Deferred Charges [Text Block]",
"documentation": "A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter)."
}
}
},
"auth_ref": [
"r16"
]
},
"rr_ExpensesRangeOfExchangeFeesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesRangeOfExchangeFeesTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses Range of Exchange Fees [Text Block]",
"label": "Expenses Range of Exchange Fees [Text Block]",
"documentation": "The Fund may include in a footnote to the table, if applicable, a tabular presentation of the range of exchange fees or a narrative explanation of the fees."
}
}
},
"auth_ref": [
"r18"
]
},
"rr_ExpensesNotCorrelatedToRatioDueToAcquiredFundFees": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesNotCorrelatedToRatioDueToAcquiredFundFees",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]",
"label": "Expenses Not Correlated to Ratio Due to Acquired Fund Fees [Text]",
"documentation": "The Fund may clarify in a footnote to the fee table that the total annual fund operating expenses under Item 3 do not correlate to the ratio of expenses to average net assets given in response to Item 8, which reflects the operating expenses of the Fund and does not include Acquired Fund fees and expenses."
}
}
},
"auth_ref": [
"r29"
]
},
"dei_AmendmentFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "AmendmentFlag",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Amendment Flag",
"documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
}
}
},
"auth_ref": []
},
"rr_ExpensesExplanationOfNonrecurringAccountFee": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpensesExplanationOfNonrecurringAccountFee",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expenses Explanation of Nonrecurring Account Fee [Text]",
"label": "Expenses Explanation of Nonrecurring Account Fee [Text]",
"documentation": "The Fund may include an explanation of any non-recurring account fee in a parenthetical to the caption or in a footnote to the table."
}
}
},
"auth_ref": [
"r19"
]
},
"rr_IndexNoDeductionForFeesExpensesTaxes": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "IndexNoDeductionForFeesExpensesTaxes",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Index No Deduction for Fees, Expenses, Taxes [Text]",
"label": "Index No Deduction for Fees, Expenses, Taxes [Text]",
"documentation": "The Performance Table includes a parenthetical, indicating that the Index \"(reflects no deduction for fees, expenses or taxes)\". This tag is used when this is reflected in a footnote."
}
}
},
"auth_ref": [
"r57"
]
},
"rr_PerformanceAvailabilityWebSiteAddress": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceAvailabilityWebSiteAddress",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Availability Website Address [Text]",
"label": "Performance Availability Website Address [Text]",
"documentation": "If applicable, include a statement explaining that updated performance information is available and providing a Website address and/or toll-free (or collect) telephone number where the updated information may be obtained."
}
}
},
"auth_ref": [
"r52"
]
},
"ck0000759667_C000000027Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000027Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "administrative shares (DREYFUS CASH MANAGEMENT)",
"terseLabel": "administrative shares"
}
}
},
"auth_ref": []
},
"rr_PerformanceAvailabilityPhone": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceAvailabilityPhone",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Availability Phone [Text]",
"label": "Performance Availability Phone [Text]",
"documentation": "If applicable, include a statement explaining that updated performance information is available and providing a Web site address and/or toll-free (or collect) telephone number where the updated information may be obtained."
}
}
},
"auth_ref": [
"r52"
]
},
"rr_MoneyMarketSevenDayYieldCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MoneyMarketSevenDayYieldCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Money Market Seven Day Yield, Caption [Text]",
"label": "Money Market Seven Day Yield, Caption [Text]",
"documentation": "Calculate a Money Market Fund's 7-day yield under Item 21(a); the Fund's average annual total return under Item 21(b)(1); and the Fund's average annual total return (after taxes on distributions) and average annual total return (after taxes on distributions and redemption) under Items 21(b)(2) and (3), respectively."
}
}
},
"auth_ref": [
"r60"
]
},
"rr_AverageAnnualReturnInceptionDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnInceptionDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Inception Date",
"label": "Inception Date",
"documentation": "Return Before Taxes."
}
}
},
"auth_ref": [
"r68"
]
},
"dei_LegalEntityAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "LegalEntityAxis",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Legal Entity [Axis]",
"documentation": "The set of legal entities associated with a report."
}
}
},
"auth_ref": []
},
"rr_AverageAnnualReturnYear10": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnYear10",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "10 Years",
"label": "10 Years",
"documentation": "Return Before Taxes."
}
}
},
"auth_ref": [
"r56"
]
},
"dei_EntityDomain": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityDomain",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"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."
}
}
},
"auth_ref": []
},
"rr_ObjectiveHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ObjectiveHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Objective [Heading]",
"label": "Objective [Heading]",
"documentation": "Investment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund)."
}
}
},
"auth_ref": [
"r5"
]
},
"rr_ExpenseExampleNoRedemptionTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionTableTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Expense Example, No Redemption [Table]",
"documentation": "Contains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption."
}
}
},
"auth_ref": []
},
"rr_AverageAnnualReturnSinceInception": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AverageAnnualReturnSinceInception",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Since Inception",
"label": "Since Inception",
"documentation": "Return Before Taxes."
}
}
},
"auth_ref": [
"r56"
]
},
"rr_ExpenseExampleByYearHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleByYearHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example by Year [Heading]",
"label": "Expense Example by Year [Heading]",
"documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower."
}
}
},
"auth_ref": [
"r7"
]
},
"rr_AnnualReturn2016": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2016",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2016",
"label": "Annual Return 2016",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ExpenseHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense [Heading]",
"label": "Expense [Heading]",
"documentation": "Risk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or \"turns over\" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a \"New Fund\" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds."
}
}
},
"auth_ref": [
"r13"
]
},
"rr_AnnualReturn2019": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2019",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2019",
"label": "Annual Return 2019",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_AnnualReturn2009": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2009",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2009",
"label": "Annual Return 2009",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"ck0000759667_C000000161Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000161Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "DREYFUS TAX EXEMPT CASH MANAGEMENT - Institutional Shares (DREYFUS TAX EXEMPT CASH MANAGEMENT FUND)",
"terseLabel": "DREYFUS TAX EXEMPT CASH MANAGEMENT - Institutional Shares"
}
}
},
"auth_ref": []
},
"ck0000759667_CIK0000353560Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "CIK0000353560Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC"
],
"lang": {
"en-us": {
"role": {
"label": "C I K 0000353560 [Member]",
"terseLabel": "GENERAL MONEY MARKET FUND, INC."
}
}
},
"auth_ref": []
},
"rr_ExpenseExampleByYearCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleByYearCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example by, Year, Caption [Text]",
"label": "Expense Example by, Year, Caption [Text]",
"documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower."
}
}
},
"auth_ref": [
"r7"
]
},
"rr_AnnualReturn2018": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2018",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2018",
"label": "Annual Return 2018",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ExpenseExampleNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example Narrative [Text Block]",
"label": "Expense Example Narrative [Text Block]",
"documentation": "The Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds."
}
}
},
"auth_ref": [
"r6"
]
},
"rr_ExpenseExampleNoRedemptionByYearColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionByYearColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, No Redemption, By Year, Column [Text]",
"label": "Expense Example, No Redemption, By Year, Column [Text]",
"documentation": "You would pay the following expenses if you did not redeem your shares."
}
}
},
"auth_ref": [
"r8"
]
},
"rr_ProspectusDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ProspectusDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Prospectus Date",
"documentation": "The date of the prospectus."
}
}
},
"auth_ref": [
"r3"
]
},
"rr_ProspectusShareClassAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ProspectusShareClassAxis",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Share Class [Axis]",
"documentation": "Prospectus Share Class Axis."
}
}
},
"auth_ref": [
"r1"
]
},
"ck0000759667_C000000265Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000265Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus Money Market Fund - Wealth Shares (GENERAL MONEY MARKET FUND, INC)",
"terseLabel": "Dreyfus Money Market Fund - Wealth Shares"
}
}
},
"auth_ref": []
},
"rr_ExpenseExampleNoRedemptionYear01": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionYear01",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, No Redemption, 1 Year",
"label": "Expense Example, No Redemption, 1 Year",
"documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption."
}
}
},
"auth_ref": [
"r8"
]
},
"rr_ExpenseExampleNoRedemptionByYearCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionByYearCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, No Redemption, By Year, Caption [Text]",
"label": "Expense Example, No Redemption, By Year, Caption [Text]",
"documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption."
}
}
},
"auth_ref": [
"r8"
]
},
"rr_RiskClosingTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskClosingTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Closing [Text Block]",
"label": "Risk Closing [Text Block]",
"documentation": "(ii) (A) If the Fund is a Money Market Fund that is not a government Money Market Fund, as defined in \u00a7270.2a\u2013 7(a)(16) or a retail Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(25), include the following statement: You could lose money by investing in the Fund. Because the share price of the Fund will fluctuate, when you sell your shares they may be worth more or less than what you originally paid for them. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. (B) If the Fund is a Money Market Fund that is a government Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(16), or a retail Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(25), and that is subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter (or is not subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter pursuant to \u00a7 270.2a\u20137(c)(2)(iii) of this chapter, but has chosen to rely on the ability to impose liquidity fees and suspend redemptions consistent with the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii)), include the following statement: You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. (C) If the Fund is a Money Market Fund that is a government Money Market Fund, as defined in \u00a7 270.2a\u20137(a)(16), that is not subject to the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii) of this chapter pursuant to \u00a7 270.2a\u20137(c)(2)(iii) of this chapter, and that has not chosen to rely on the ability to impose liquidity fees and suspend redemptions consistent with the requirements of \u00a7\u00a7 270.2a\u20137(c)(2)(i) and/or (ii), include the following statement: You could lose money by investing in the Fund. Although the Fund seeks to preserve the value of your investment at $1.00 per share, it cannot guarantee it will do so. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time. Instruction. If an affiliated person, promoter, or principal underwriter of the Fund, or an affiliated person of such a person, has contractually committed to provide financial support to the Fund, and the term of the agreement will extend for at least one year following the effective date of the Fund's registration statement, the statement specified in Item 4(b)(1)(ii)(A), Item 4(b)(1)(ii)(B), or Item 4(b)(1)(ii)(C) may omit the last sentence (\"The Fund's sponsor has no legal obligation to provide financial support to the Fund, and you should not expect that the sponsor will provide financial support to the Fund at any time.\"). For purposes of this Instruction, the term \"financial support\" includes any capital contribution, purchase of a security from the Fund in reliance on \u00a7 270.17a\u20139, purchase of any defaulted or devalued security at par, execution of letter of credit or letter of indemnity, capital support agreement (whether or not the Fund ultimately received support), performance guarantee, or any other similar action reasonably intended to increase or stabilize the value or liquidity of the fund's portfolio; however, the term \"financial support\" excludes any routine waiver of fees or reimbursement of fund expenses, routine inter-fund lending, routine inter-fund purchases of fund shares, or any action that would qualify as financial support as defined above, that the board of directors has otherwise determined not to be reasonably intended to increase or stabilize the value or liquidity of the fund's portfolio. (iii) If the Fund is advised by or sold through an insured depository institution, state that: An investment in the Fund is not a deposit of the bank and is not insured or guaranteed by the Federal Deposit Insurance corporation or any other government agency. Instruction. A Money Market Fund that is advised by or sold through an insured depository institution should combine the disclosure required by Items 4(b)(1)(ii) and (iii) in a single statement."
}
}
},
"auth_ref": [
"r47"
]
},
"rr_AnnualReturn2010": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2010",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2010",
"label": "Annual Return 2010",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_AnnualReturn2012": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2012",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2012",
"label": "Annual Return 2012",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ExpenseExampleByYearColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleByYearColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, By Year, Column [Text]",
"label": "Expense Example, By Year, Column [Text]",
"documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower."
}
}
},
"auth_ref": [
"r7"
]
},
"rr_MoneyMarketSevenDayYieldPhone": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MoneyMarketSevenDayYieldPhone",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Money Market Seven Day Yield Phone",
"label": "Money Market Seven Day Yield Phone",
"documentation": "A Fund (other than a Money Market Fund) may include the Fund's yield calculated under Item 21(b)(2). Any Fund may include its tax-equivalent yield calculated under Item 21. If a Fund's yield is included, provide a toll-free (or collect) telephone number that investors can use to obtain current yield information."
}
}
},
"auth_ref": [
"r62"
]
},
"rr_ExpenseExampleNoRedemptionYear03": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionYear03",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, No Redemption, 3 Years",
"label": "Expense Example, No Redemption, 3 Years",
"documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption."
}
}
},
"auth_ref": [
"r8"
]
},
"rr_ExpenseExampleYear01": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleYear01",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, with Redemption, 1 Year",
"label": "Expense Example, with Redemption, 1 Year",
"documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower."
}
}
},
"auth_ref": [
"r30"
]
},
"rr_AnnualReturn2008": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2008",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2008",
"label": "Annual Return 2008",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_CIK0000740123Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "CIK0000740123Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND"
],
"lang": {
"en-us": {
"role": {
"label": "C I K 0000740123 [Member]",
"terseLabel": "DREYFUS TAX EXEMPT CASH MANAGEMENT FUNDS"
}
}
},
"auth_ref": []
},
"dei_EntityInvCompanyType": {
"xbrltype": "invCompanyType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityInvCompanyType",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Inv Company Type",
"documentation": "One of: N-1A (Mutual Fund), N-1 (Open-End Separate Account with No Variable Annuities), N-2 (Closed-End Investment Company), N-3 (Separate Account Registered as Open-End Management Investment Company), N-4 (Variable Annuity UIT Separate Account), N-5 (Small Business Investment Company), N-6 (Variable Life UIT Separate Account), S-1 or S-3 (Face Amount Certificate Company), S-6 (UIT, Non-Insurance Product)."
}
}
},
"auth_ref": [
"r74"
]
},
"rr_PerformanceOneYearOrLess": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceOneYearOrLess",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance One Year or Less [Text]",
"label": "Performance One Year or Less [Text]",
"documentation": "For a Fund that provides annual total returns for only one calendar year or for a Fund that does not include the bar chart because it does not have annual returns for a full calendar year, modify, as appropriate, the narrative explanation required by stating that the information gives some indication of the risks of an investment in the Fund by comparing the Fund's performance with a broad measure of market performance). Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future."
}
}
},
"auth_ref": [
"r52",
"r59"
]
},
"rr_ProspectusTable": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ProspectusTable",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Prospectus:",
"documentation": "Prospectus Table."
}
}
},
"auth_ref": [
"r1"
]
},
"rr_ExpenseFootnotesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseFootnotesTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Footnotes [Text Block]",
"label": "Expense Footnotes [Text Block]",
"documentation": "Shareholder Fees."
}
}
},
"auth_ref": [
"r15"
]
},
"rr_AnnualReturn2011": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2011",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2011",
"label": "Annual Return 2011",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"rr_MaximumCumulativeSalesChargeOverOfferingPrice": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumCumulativeSalesChargeOverOfferingPrice",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Cumulative Sales Charge (as a percentage of Offering Price)",
"label": "Maximum Cumulative Sales Charge (as a percentage of Offering Price)",
"documentation": "Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption."
}
}
},
"auth_ref": [
"r35"
]
},
"rr_ExpenseNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Narrative [Text Block]",
"label": "Expense Narrative [Text Block]",
"documentation": "This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[ ] in [name of fund family] funds. More information about these and other discounts is available from your financial intermediary and in [identify section heading and page number] of the Fund's prospectus and [identify section heading and page number] of the Fund's statement of additional information"
}
}
},
"auth_ref": [
"r11"
]
},
"rr_ExpenseExampleYear03": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleYear03",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, with Redemption, 3 Years",
"label": "Expense Example, with Redemption, 3 Years",
"documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower."
}
}
},
"auth_ref": [
"r7"
]
},
"rr_AnnualReturn2007": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2007",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2007",
"label": "Annual Return 2007",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"ck0000759667_S000000119Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "S000000119Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC"
],
"lang": {
"en-us": {
"role": {
"label": "GENERAL MONEY MARKET FUND, INC"
}
}
},
"auth_ref": []
},
"rr_ExpenseExampleYear05": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleYear05",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, with Redemption, 5 Years",
"label": "Expense Example, with Redemption, 5 Years",
"documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower."
}
}
},
"auth_ref": [
"r7"
]
},
"rr_AnnualReturn2014": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2014",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2014",
"label": "Annual Return 2014",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ExpenseExampleNoRedemptionYear05": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionYear05",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, No Redemption, 5 Years",
"label": "Expense Example, No Redemption, 5 Years",
"documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption."
}
}
},
"auth_ref": [
"r31"
]
},
"rr_AnnualReturn2017": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2017",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2017",
"label": "Annual Return 2017",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ExpenseExampleNoRedemptionYear10": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleNoRedemptionYear10",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, No Redemption, 10 Years",
"label": "Expense Example, No Redemption, 10 Years",
"documentation": "You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption."
}
}
},
"auth_ref": [
"r31"
]
},
"rr_StrategyNarrativeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "StrategyNarrativeTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Strategy Narrative [Text Block]",
"label": "Strategy Narrative [Text Block]",
"documentation": "Principal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries."
}
}
},
"auth_ref": [
"r44"
]
},
"rr_ExpenseExampleYear10": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleYear10",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example, with Redemption, 10 Years",
"label": "Expense Example, with Redemption, 10 Years",
"documentation": "The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower."
}
}
},
"auth_ref": [
"r7"
]
},
"rr_MoneyMarketSevenDayYieldColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MoneyMarketSevenDayYieldColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Money Market Seven Day Yield Column [Text]",
"label": "Money Market Seven Day Yield Column [Text]",
"documentation": "Calculate a Money Market Fund's 7-day yield under Item 21(a); the Fund's average annual total return under Item 21(b)(1); and the Fund's average annual total return (after taxes on distributions) and average annual total return (after taxes on distributions and redemption) under Items 21(b)(2) and (3), respectively."
}
}
},
"auth_ref": [
"r60"
]
},
"dei_DocumentType": {
"xbrltype": "submissionTypeItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DocumentType",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Document Type",
"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'."
}
}
},
"auth_ref": []
},
"rr_ExpenseExampleClosingTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseExampleClosingTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Example Closing [Text Block]",
"label": "Expense Example Closing [Text Block]",
"documentation": "The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher."
}
}
},
"auth_ref": [
"r30"
]
},
"rr_PerformancePastDoesNotIndicateFuture": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformancePastDoesNotIndicateFuture",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Past Does Not Indicate Future [Text]",
"label": "Performance Past Does Not Indicate Future [Text]",
"documentation": "Include the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future."
}
}
},
"auth_ref": [
"r52"
]
},
"rr_StrategyHeading": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "StrategyHeading",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Strategy [Heading]",
"label": "Strategy [Heading]",
"documentation": "Principal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries."
}
}
},
"auth_ref": [
"r44"
]
},
"rr_AnnualReturn2006": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2006",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2006",
"label": "Annual Return 2006",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_AnnualReturn2015": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2015",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2015",
"label": "Annual Return 2015",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_AnnualReturn2013": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2013",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2013",
"label": "Annual Return 2013",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_MoneyMarketSevenDayYield": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MoneyMarketSevenDayYield",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Money Market Seven Day Yield",
"label": "Money Market Seven Day Yield",
"documentation": "Calculate a Money Market Fund's 7-day yield under Item 21(a); the Fund's average annual total return under Item 21(b)(1); and the Fund's average annual total return (after taxes on distributions) and average annual total return (after taxes on distributions and redemption) under Items 21(b)(2) and (3), respectively."
}
}
},
"auth_ref": [
"r60"
]
},
"rr_ShareClassDomain": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ShareClassDomain",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"documentation": "All members of this domain must be elements with name starting with \"C\" and consisting of a 9-digit Fund share class CIK."
}
}
},
"auth_ref": [
"r2"
]
},
"dei_TradingSymbol": {
"xbrltype": "tradingSymbolItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "TradingSymbol",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Trading Symbol",
"documentation": "Trading symbol of an instrument as listed on an exchange."
}
}
},
"auth_ref": []
},
"dei_EntityRegistrantName": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityRegistrantName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Registrant Name",
"documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
}
}
},
"auth_ref": [
"r0"
]
},
"rr_BarChartReturnsForClassNotOfferedInProspectus": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartReturnsForClassNotOfferedInProspectus",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart, Returns for Class Not Offered in Prospectus [Text]",
"label": "Bar Chart, Returns for Class Not Offered in Prospectus [Text]",
"documentation": "When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table."
}
}
},
"auth_ref": [
"r65"
]
},
"rr_AnnualReturn1999": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1999",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1999",
"label": "Annual Return 1999",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"dei_EntityCentralIndexKey": {
"xbrltype": "centralIndexKeyItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityCentralIndexKey",
"presentation": [
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Central Index Key",
"documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
}
}
},
"auth_ref": [
"r0"
]
},
"rr_AnnualReturnInceptionDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturnInceptionDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return, Inception Date",
"label": "Annual Return, Inception Date",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_HighestQuarterlyReturnLabel": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "HighestQuarterlyReturnLabel",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Highest Quarterly Return, Label",
"label": "Highest Quarterly Return, Label",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ObjectiveSecondaryTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ObjectiveSecondaryTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Objective, Secondary [Text Block]",
"label": "Objective, Secondary [Text Block]",
"documentation": "Investment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund)."
}
}
},
"auth_ref": [
"r5"
]
},
"rr_ExpenseBreakpointDiscounts": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExpenseBreakpointDiscounts",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Expense Breakpoint Discounts [Text]",
"label": "Expense Breakpoint Discounts [Text]",
"documentation": "Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown. The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount."
}
}
},
"auth_ref": [
"r11"
]
},
"rr_RiskCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Caption",
"label": "Risk Caption",
"documentation": "Narrative Risk Disclosure."
}
}
},
"auth_ref": [
"r45"
]
},
"rr_AnnualReturn1998": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1998",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1998",
"label": "Annual Return 1998",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_PerformanceAdditionalMarketIndex": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "PerformanceAdditionalMarketIndex",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Performance Additional Market Index [Text]",
"label": "Performance Additional Market Index [Text]",
"documentation": "Include the bar chart and table required by paragraphs (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future."
}
}
},
"auth_ref": [
"r52"
]
},
"ck0000759667_C000000025Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000025Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Institutional Shares (DREYFUS CASH MANAGEMENT)",
"terseLabel": "Institutional Shares"
}
}
},
"auth_ref": []
},
"rr_RiskFootnotesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskFootnotesTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Footnotes [Text Block]",
"label": "Risk Footnotes [Text Block]",
"documentation": "Narrative Risk Disclosure."
}
}
},
"auth_ref": [
"r45"
]
},
"ck0000759667_C000000270Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000270Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus National Municipal Money Market Fund - Service Shares (General Municipal Money Market Funds, Inc.)",
"terseLabel": "Dreyfus National Municipal Money Market Fund - Service Shares"
}
}
},
"auth_ref": []
},
"rr_RiskColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Column [Text]",
"label": "Risk Column [Text]",
"documentation": "Narrative Risk Disclosure."
}
}
},
"auth_ref": [
"r45"
]
},
"rr_AnnualReturnColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturnColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return, Column [Text]",
"label": "Annual Return, Column [Text]",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table."
}
}
},
"auth_ref": [
"r58"
]
},
"rr_AnnualReturn1997": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1997",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1997",
"label": "Annual Return 1997",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"rr_AnnualReturn2001": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2001",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2001",
"label": "Annual Return 2001",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_C000223362Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000223362Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Dreyfus National Municipal Money Market Fund - Premier Shares (General Municipal Money Market Funds, Inc.)",
"terseLabel": "Dreyfus National Municipal Money Market Fund - Premier Shares"
}
}
},
"auth_ref": []
},
"rr_BarChartYearToDateReturnDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartYearToDateReturnDate",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart, Year to Date Return, Date",
"label": "Bar Chart, Year to Date Return, Date",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"ck0000759667_C000000026Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "C000000026Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation"
],
"lang": {
"en-us": {
"role": {
"label": "Investor Shares (DREYFUS CASH MANAGEMENT)",
"terseLabel": "Investor Shares"
}
}
},
"auth_ref": []
},
"rr_AnnualReturn2002": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2002",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2002",
"label": "Annual Return 2002",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_ShareholderFeesColumnName": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ShareholderFeesColumnName",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Shareholder Fees Column [Text]",
"label": "Shareholder Fees Column [Text]",
"documentation": "Shareholder Fees (fees paid directly from your investment)."
}
}
},
"auth_ref": [
"r34"
]
},
"rr_MaximumAccountFee": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumAccountFee",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Account Fee",
"label": "Maximum Account Fee",
"documentation": "Include the caption \"Maximum Account Fees\" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., \"Maximum Account Maintenance Fee\" or \"Maximum Cash Management Fee\"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)"
}
}
},
"auth_ref": [
"r12"
]
},
"rr_RiskMoneyMarketFundMayNotPreserveDollar": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskMoneyMarketFundMayNotPreserveDollar",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Money Market Fund May Not Preserve Dollar [Text] (Deprecated 2023-01-31)",
"label": "Risk Money Market Fund May Not Preserve Dollar [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r47"
]
},
"rr_RiskMoneyMarketFundMayImposeFeesOrSuspendSales": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskMoneyMarketFundMayImposeFeesOrSuspendSales",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Money Market Fund May Impose Fees or Suspend Sales [Text] (Deprecated 2023-01-31)",
"label": "Risk Money Market Fund May Impose Fees or Suspend Sales [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r47"
]
},
"rr_BarChartHighestQuarterlyReturn": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartHighestQuarterlyReturn",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Highest Quarterly Return",
"label": "Highest Quarterly Return",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_RiskNotInsuredDepositoryInstitution": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskNotInsuredDepositoryInstitution",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Not Insured Depository Institution [Text] (Deprecated 2023-01-31)",
"label": "Risk Not Insured Depository Institution [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r49"
]
},
"rr_AnnualReturn1996": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1996",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1996",
"label": "Annual Return 1996",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"ck0000759667_CIK0000759667Member": {
"xbrltype": "domainItemType",
"nsuri": "http://www.dreyfus.com/20231004",
"localname": "CIK0000759667Member",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT"
],
"lang": {
"en-us": {
"role": {
"label": "C I K 0000759667 [Member]",
"terseLabel": "DREYFUS CASH MANAGEMENT"
}
}
},
"auth_ref": []
},
"rr_ExchangeFee": {
"xbrltype": "NonNegativeMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExchangeFee",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Exchange Fee",
"label": "Exchange Fee",
"documentation": "Exchange Fee includes the maximum fee charged for any exchange or transfer of interest from the Fund to another fund. The Fund may include in a footnote to the table, if applicable, a tabular presentation of the range of exchange fees or a narrative explanation of the fees."
}
}
},
"auth_ref": [
"r40"
]
},
"rr_AnnualReturn2003": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2003",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2003",
"label": "Annual Return 2003",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"rr_BarChartDoesNotReflectSalesLoads": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartDoesNotReflectSalesLoads",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart Does Not Reflect Sales Loads [Text]",
"label": "Bar Chart Does Not Reflect Sales Loads [Text]",
"documentation": "Include the bar chart and table required by Item 4 (b)(2)(ii) and (iii) of this section. Provide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown."
}
}
},
"auth_ref": [
"r52"
]
},
"rr_AnnualReturn1995": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1995",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1995",
"label": "Annual Return 1995",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_RedemptionFee": {
"xbrltype": "NonPositiveMonetaryType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RedemptionFee",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Redemption Fee",
"label": "Redemption Fee",
"documentation": "\"Redemption Fee\" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. \"Redemption Fee\" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption."
}
}
},
"auth_ref": [
"r39"
]
},
"rr_MaximumDeferredSalesChargeOverOther": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumDeferredSalesChargeOverOther",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Deferred Sales Charge (as a percentage)",
"label": "Maximum Deferred Sales Charge (as a percentage)",
"documentation": "Maximum Deferred Sales Charge (Load) (as a percentage of ____) \"Maximum Deferred Sales Charge (Load)\" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read \"Maximum Sales Charge (Load)\" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below."
}
}
},
"auth_ref": [
"r16"
]
},
"rr_ShareholderFeesCaption": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ShareholderFeesCaption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Shareholder Fees Caption [Text]",
"label": "Shareholder Fees Caption [Text]",
"documentation": "Shareholder Fees (fees paid directly from your investment)."
}
}
},
"auth_ref": [
"r34"
]
},
"rr_MaximumDeferredSalesChargeOverOfferingPrice": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumDeferredSalesChargeOverOfferingPrice",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Deferred Sales Charge (as a percentage of Offering Price)",
"label": "Maximum Deferred Sales Charge (as a percentage of Offering Price)",
"documentation": "Maximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i \"Maximum Deferred Sales Charge (Load)\" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read \"Maximum Sales Charge (Load)\" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below."
}
}
},
"auth_ref": [
"r16"
]
},
"rr_RiskMoneyMarketFundSponsorMayNotProvideSupport": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskMoneyMarketFundSponsorMayNotProvideSupport",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Money Market Fund Sponsor May Not Provide Support [Text] (Deprecated 2023-01-31)",
"label": "Risk Money Market Fund Sponsor May Not Provide Support [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r47"
]
},
"rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)",
"label": "Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage)",
"documentation": "Maximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)"
}
}
},
"auth_ref": [
"r38"
]
},
"rr_RedemptionFeeOverRedemption": {
"xbrltype": "NonPositivePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RedemptionFeeOverRedemption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Redemption Fee (as a percentage of Amount Redeemed)",
"label": "Redemption Fee (as a percentage of Amount Redeemed)",
"documentation": "\"Redemption Fee\" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. \"Redemption Fee\" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption."
}
}
},
"auth_ref": [
"r17"
]
},
"rr_AnnualReturn1994": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1994",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1994",
"label": "Annual Return 1994",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_RiskLoseMoney": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskLoseMoney",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Lose Money [Text] (Deprecated 2023-01-31)",
"label": "Risk Lose Money [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r45"
]
},
"rr_RiskMoneyMarketFundMayImposeFeesOrSuspendSalesMember": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskMoneyMarketFundMayImposeFeesOrSuspendSalesMember",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Money Market Fund May Impose Fees or Suspend Sales [Member]",
"label": "Risk Money Market Fund May Impose Fees or Suspend Sales [Member]",
"documentation": "In a Risk Text Block, include the statement \"The Fund may impose a fee upon sale of your shares or may temporarily suspend your ability to sell shares if the Fund's liquidity falls below required minimums because of market conditions or other factors.\""
}
}
},
"auth_ref": [
"r47"
]
},
"rr_CoregistrantAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "CoregistrantAxis",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentAndEntityInformation",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"label": "Coregistrant [Axis]",
"documentation": "The Coregistrant Axis may be used to distinguish disclosures that belong to registrants having different Central Index Key (CIK) values that nevertheless all present in the same filing."
}
}
},
"auth_ref": [
"r1"
]
},
"rr_AnnualReturn2004": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2004",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2004",
"label": "Annual Return 2004",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"rr_BarChartReasonSelectedClassDifferentFromImmediatelyPrecedingPeriod": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartReasonSelectedClassDifferentFromImmediatelyPrecedingPeriod",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text]",
"label": "Bar Chart, Reason Selected Class Different from Immediately Preceding Period [Text]",
"documentation": "If the Fund provides annual total returns in the bar chart for a Class that is different from the Class selected for the most immediately preceding period, explain in a footnote to the bar chart the reasons for the selection of a different Class."
}
}
},
"auth_ref": [
"r67"
]
},
"rr_MaximumCumulativeSalesChargeOverOther": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumCumulativeSalesChargeOverOther",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Cumulative Sales Charge (as a percentage)",
"label": "Maximum Cumulative Sales Charge (as a percentage)",
"documentation": "Maximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption."
}
}
},
"auth_ref": [
"r35"
]
},
"rr_AnnualReturn2005": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2005",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2005",
"label": "Annual Return 2005",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_AnnualReturn1993": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn1993",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 1993",
"label": "Annual Return 1993",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r64"
]
},
"rr_ExchangeFeeOverRedemption": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ExchangeFeeOverRedemption",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Exchange Fee (as a percentage of Amount Redeemed)",
"label": "Exchange Fee (as a percentage of Amount Redeemed)",
"documentation": "Exchange Fee includes the maximum fee charged for any exchange or transfer of interest from the Fund to another fund. The Fund may include in a footnote to the table, if applicable, a tabular presentation of the range of exchange fees or a narrative explanation of the fees."
}
}
},
"auth_ref": [
"r18"
]
},
"rr_RiskNotInsured": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "RiskNotInsured",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk Not Insured [Text] (Deprecated 2023-01-31)",
"label": "Risk Not Insured [Text] (Deprecated 2023-01-31)",
"documentation": "Deprecated 2023-01-31"
}
}
},
"auth_ref": [
"r47"
]
},
"rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumSalesChargeImposedOnPurchasesOverOfferingPrice",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)",
"label": "Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price)",
"documentation": "Maximum Deferred Sales Charge (Load) (as a percentage of ____) A.3.instructions.2.a.i \"Maximum Deferred Sales Charge (Load)\" includes the maximum total deferred sales charge (load) payable upon redemption, in installments, or both, expressed as a percentage of the amount or amounts stated in response to Item 7(a), except that, for a sales charge (load) based on net asset value at the time of purchase, show the sales charge (load) as a percentage of the offering price at the time of purchase. A Fund may include in a footnote to the table, if applicable, a tabular presentation showing the amount of deferred sales charges (loads) over time or a narrative explanation of the sales charges (loads) (e.g., __% in the first year after purchase, declining to __% in the __ year and eliminated thereafter). A.3.instructions.2.a.ii If more than one type of sales charge (load) is imposed (e.g., a deferred sales charge (load) and a front-end sales charge (load)), the first caption in the table should read \"Maximum Sales Charge (Load)\" and show the maximum cumulative percentage. Show the percentage amounts and the terms of each sales charge (load) comprising that figure on separate lines below."
}
}
},
"auth_ref": [
"r35"
]
},
"rr_ObjectivePrimaryTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "ObjectivePrimaryTextBlock",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DocumentRiskReturnSummaryUnlabeledGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Objective, Primary [Text Block]",
"label": "Objective, Primary [Text Block]",
"documentation": "Investment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund)."
}
}
},
"auth_ref": [
"r5"
]
},
"rr_MaximumAccountFeeOverAssets": {
"xbrltype": "NonNegativePure4Type",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "MaximumAccountFeeOverAssets",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Maximum Account Fee (as a percentage of Assets)",
"label": "Maximum Account Fee (as a percentage of Assets)",
"documentation": "Include the caption \"Maximum Account Fees\" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., \"Maximum Account Maintenance Fee\" or \"Maximum Cash Management Fee\"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)"
}
}
},
"auth_ref": [
"r41"
]
},
"rr_Risk": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "Risk",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Risk [Text] (Deprecated 2023-01-31)",
"label": "Risk [Text] (Deprecated 2023-01-31)",
"documentation": "Narrative Risk Disclosure."
}
}
},
"auth_ref": [
"r45"
]
},
"rr_AnnualReturn2000": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "AnnualReturn2000",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Annual Return 2000",
"label": "Annual Return 2000",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets)."
}
}
},
"auth_ref": [
"r53"
]
},
"rr_BarChartYearToDateReturn": {
"xbrltype": "pureItemType",
"nsuri": "http://xbrl.sec.gov/rr/2023",
"localname": "BarChartYearToDateReturn",
"presentation": [
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSCASHMANAGEMENT",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsDREYFUSTAXEXEMPTCASHMANAGEMENTFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALMONEYMARKETFUNDINC",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGENERALNEWYORKMUNICIPALMONEYMARKETFUND",
"http://www.dreyfus.com/20231004/role/DisclosureRiskReturnDetailDataElementsGeneralMunicipalMoneyMarketFundsInc"
],
"lang": {
"en-us": {
"role": {
"terseLabel": "Bar Chart, Year to Date Return",
"label": "Bar Chart, Year to Date Return",
"documentation": "If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart."
}
}
},
"auth_ref": [
"r53"
]
}
}
}
},
"std_ref": {
"r0": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Exchange Act",
"Number": "240",
"Section": "12",
"Subsection": "b-2"
},
"r1": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A"
},
"r2": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "1",
"Subsection": "a",
"Paragraph": "1"
},
"r3": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "1",
"Subsection": "a",
"Paragraph": "3"
},
"r4": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "2"
},
"r5": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "2",
"Subsection": "a"
},
"r6": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "example",
"Paragraph": "1",
"Subparagraph": "1"
},
"r7": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "example",
"Paragraph": "1",
"Subparagraph": "2"
},
"r8": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "example",
"Paragraph": "2",
"Subparagraph": "1"
},
"r9": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "example",
"Paragraph": "2",
"Subparagraph": "6"
},
"r10": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "example",
"Paragraph": "3"
},
"r11": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "1",
"Subparagraph": "b"
},
"r12": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "1",
"Subparagraph": "c"
},
"r13": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "1",
"Subparagraph": "d"
},
"r14": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "1",
"Subparagraph": "d",
"Clause": "i"
},
"r15": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "2"
},
"r16": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "2",
"Subparagraph": "a",
"Clause": "i"
},
"r17": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "2",
"Subparagraph": "b"
},
"r18": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "2",
"Subparagraph": "c"
},
"r19": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "2",
"Subparagraph": "d"
},
"r20": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "a"
},
"r21": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "b"
},
"r22": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "c",
"Clause": "i"
},
"r23": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "c",
"Clause": "ii"
},
"r24": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "c",
"Clause": "iii"
},
"r25": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "d"
},
"r26": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "d",
"Clause": "ii",
"Exhibit": "B"
},
"r27": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "e"
},
"r28": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "f",
"Clause": "vi"
},
"r29": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "3",
"Subparagraph": "f",
"Clause": "vii"
},
"r30": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "4"
},
"r31": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "4",
"Subparagraph": "f"
},
"r32": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "5"
},
"r33": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "instructions",
"Paragraph": "6",
"Subparagraph": "a"
},
"r34": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1"
},
"r35": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "1"
},
"r36": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "10"
},
"r37": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "11"
},
"r38": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "3"
},
"r39": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "4"
},
"r40": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "5"
},
"r41": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "6"
},
"r42": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "7"
},
"r43": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "3",
"Subsection": "table",
"Paragraph": "1",
"Subparagraph": "9"
},
"r44": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "a"
},
"r45": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "1"
},
"r46": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "1",
"Subparagraph": "i",
"Clause": "instruction"
},
"r47": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "1",
"Subparagraph": "ii"
},
"r48": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "1",
"Subparagraph": "ii",
"Clause": "A"
},
"r49": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "1",
"Subparagraph": "iii"
},
"r50": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "1",
"Subparagraph": "iv"
},
"r51": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2"
},
"r52": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "i"
},
"r53": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "ii"
},
"r54": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iii"
},
"r55": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iii",
"Clause": "1",
"Exhibit": "1"
},
"r56": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iii",
"Clause": "1",
"Exhibit": "2"
},
"r57": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iii",
"Clause": "1",
"Exhibit": "5"
},
"r58": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "1",
"Exhibit": "a"
},
"r59": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "1",
"Exhibit": "b"
},
"r60": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "2",
"Exhibit": "a"
},
"r61": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "2",
"Exhibit": "c"
},
"r62": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "2",
"Exhibit": "d"
},
"r63": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "3"
},
"r64": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "3",
"Exhibit": "a"
},
"r65": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "3",
"Exhibit": "b"
},
"r66": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "3",
"Exhibit": "c"
},
"r67": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "3",
"Exhibit": "c",
"Sentence": "D",
"Example": "ii"
},
"r68": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "4"
},
"r69": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "instructions",
"Clause": "5"
},
"r70": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iv"
},
"r71": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iv",
"Clause": "B"
},
"r72": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iv",
"Clause": "C"
},
"r73": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-1A",
"Section": "4",
"Subsection": "b",
"Paragraph": "2",
"Subparagraph": "iv",
"Clause": "D"
},
"r74": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Regulation S-T",
"Number": "232",
"Section": "313"
}
}
}