Consolidated Statements of Stockholders’ Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance (in shares) at Jan. 31, 2019		770
Beginning balance at Jan. 31, 2019	$ 15,605	$ 1	$ 13,927	$ (58)	$ 1,735
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued (in shares)		21
Common stock issued	816		816
Shares issued related to business combinations (in shares)		102
Shares issued related to business combinations	15,588		15,588
Stock-based expense	1,785		1,785
Other comprehensive income (loss), net	(35)			(35)
Net income	126				126
Ending balance (in shares) at Jan. 31, 2020		893
Ending balance at Jan. 31, 2020	33,885	$ 1	32,116	(93)	1,861
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued (in shares)		26
Common stock issued	1,295		1,295
Stock-based expense	2,190		2,190
Other comprehensive income (loss), net	51			51
Net income	4,072				4,072
Ending balance (in shares) at Jan. 31, 2021		919
Ending balance at Jan. 31, 2021	41,493	$ 1	35,601	(42)	5,933
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued (in shares)		24
Common stock issued	1,270		1,270
Shares issued related to business combinations (in shares)		46
Shares issued related to business combinations	11,269		11,269
Stock-based expense	2,779		2,779
Other comprehensive income (loss), net	(124)			(124)
Net income	1,444				1,444
Ending balance (in shares) at Jan. 31, 2022		989
Ending balance at Jan. 31, 2022	$ 58,131	$ 1	$ 50,919	$ (166)	$ 7,377