Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income	$ 2,086	$ 1,527	$ 5,514	$ 4,489
Other comprehensive income, net of reclassification adjustments:
Foreign currency translation and other gains (losses)	94	4	384	(23)
Unrealized gains on marketable securities	16	9	44	27
Other comprehensive income, before tax	110	13	428	4
Tax effect	(3)	(2)	(8)	(4)
Other comprehensive income, net	107	11	420	0
Comprehensive income	$ 2,193	$ 1,538	$ 5,934	$ 4,489