Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 1,026	$ 519	$ 1,640	$ 952
Income before provision for income taxes	$ 4,552	$ 2,406	$ 7,273	$ 4,380
Effective tax rate			23.00%	22.00%

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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+ Details