Taxes - Schedule of Income Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
Current:
U.S. federal	$ 3,215	$ 2,030	$ 3,313
U.S. state and local	762	610	649
International	1,772	2,654	1,553
Total current tax provision	5,749	5,294	5,515
Deferred:
U.S. federal	(438)	608	(671)
U.S. state and local	141	119	41
International	126	(297)	(129)
Total deferred tax expense (benefit)	(171)	430	(759)
Total provision for income taxes	$ 5,578	$ 5,724	$ 4,756