Income Taxes - Reconciliation of statutory Federal Income Tax Rate (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Income Tax Disclosure [Abstract]
U.S. federal taxes at statutory rate	$ 1,562	$ 1,040	$ 139
State, net of the federal benefit	106	19	29
Effects of non-U.S. operations	315	29	287
Tax credits	(270)	(332)	(239)
Non-deductible expenses	100	43	94
Foreign-derived intangible income deduction	(373)	(56)	(55)
(Windfall)/shortfall related to share-based compensation	(215)	(36)	31
Change in valuation allowance	51	101	171
Other, net	(35)	6	(5)
Provision for (benefit from) income taxes	$ 1,241	$ 814	$ 452