January 31,  | |||||||||||||||||||
(Amounts in millions)  | 2018  | 2017  | 2016  | 2015  | 2014  | ||||||||||||||
Income from continuing operations before income taxes  | $  | 15,123  | $  | 20,497  | $  | 21,638  | $  | 24,799  | $  | 24,656  | |||||||||
Capitalized interest  | (17  | )  | (36  | )  | (39  | )  | (59  | )  | (78  | )  | |||||||||
Consolidated net income attributable to the noncontrolling interest  | (661  | )  | (650  | )  | (386  | )  | (736  | )  | (673  | )  | |||||||||
Adjusted income before income taxes  | 14,445  | 19,811  | 21,213  | 24,004  | 23,905  | ||||||||||||||
Fixed charges:  | |||||||||||||||||||
Interest (1)  | 2,347  | 2,403  | 2,587  | 2,520  | 2,413  | ||||||||||||||
Interest component of rent  | 890  | 862  | 836  | 916  | 933  | ||||||||||||||
            Total fixed charges  | 3,237  | 3,265  | 3,423  | 3,436  | 3,346  | ||||||||||||||
Income before income taxes and fixed charges  | $  | 17,682  | $  | 23,076  | $  | 24,636  | $  | 27,440  | $  | 27,251  | |||||||||
Ratio of earnings to fixed charges  | 5.5  | 7.1  | 7.2  | 8.0  | 8.1  | ||||||||||||||