Consolidated Statements of Stockholders’ Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income/(Loss)	Retained Earnings
Beginning balance (in shares) at Jan. 31, 2022		989
Beginning balance at Jan. 31, 2022	$ 58,131	$ 1	$ 0	$ 50,919	$ (166)	$ 7,377
Beginning balance (in shares) at Jan. 31, 2022			0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued (in shares)		20
Common stock issued	849			849
Common stock repurchased (in shares)			(28)
Common stock repurchased	(4,000)		$ (4,000)
Stock-based compensation	3,279			3,279
Other comprehensive income (loss), net of tax	(108)				(108)
Net income	208					208
Ending balance (in shares) at Jan. 31, 2023		1,009
Ending balance at Jan. 31, 2023	58,359	$ 1	$ (4,000)	55,047	(274)	7,585
Ending balance (in shares) at Jan. 31, 2023			(28)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued (in shares)		26
Common stock issued	1,994			1,994
Common stock repurchased (in shares)			(36)
Common stock repurchased	(7,692)		$ (7,692)
Stock-based compensation	2,800			2,800
Other comprehensive income (loss), net of tax	49				49
Net income	4,136					4,136
Ending balance (in shares) at Jan. 31, 2024		1,035
Ending balance at Jan. 31, 2024	59,646	$ 1	$ (11,692)	59,841	(225)	11,721
Ending balance (in shares) at Jan. 31, 2024			(64)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued (in shares)		21
Common stock issued	1,535			1,535
Common stock repurchased (in shares)			(30)
Common stock repurchased	(7,815)		$ (7,815)
Stock-based compensation	3,200			3,200
Other comprehensive income (loss), net of tax	(41)				(41)
Net income	6,197					6,197
Cash dividends declared	(1,549)					(1,549)
Ending balance (in shares) at Jan. 31, 2025		1,056
Ending balance at Jan. 31, 2025	$ 61,173	$ 1	$ (19,507)	$ 64,576	$ (266)	$ 16,369
Ending balance (in shares) at Jan. 31, 2025			(94)