CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Common stock and additional paid-in capital	Accumulated other comprehensive loss	Accumulated deficit
Beginning Balance (in shares) at Jan. 31, 2021		220
Beginning balance at Jan. 31, 2021	$ 965	$ 2,579	$ (126)	$ (1,488)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued under stock plans (in shares)		2
Common shares issued under stock plans	(78)	$ (78)
Stock-based compensation expense	544	544
Settlement of liability-classified restricted common shares	3	3
Net income	497			497
Other comprehensive income (loss)	2		2
Shares issued as consideration for business combination	$ 6	$ 6
Repurchase and retirement of common shares (in shares)	(4)	(4)
Repurchase and retirement of common shares	$ (1,090)	$ (131)		(959)
Ending Balance (in shares) at Jan. 31, 2022		218
Ending balance at Jan. 31, 2022	849	$ 2,923	(124)	(1,950)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued under stock plans (in shares)		2
Common shares issued under stock plans	(38)	$ (38)
Stock-based compensation expense	633	633
Settlement of liability-classified restricted common shares	11	11
Net income	823			823
Other comprehensive income (loss)	(61)		(61)
Shares issued as consideration for business combination	$ 10	$ 10
Repurchase and retirement of common shares (in shares)	(5)	(5)
Repurchase and retirement of common shares	$ (1,082)	$ (214)		(868)
Ending Balance (in shares) at Jan. 31, 2023	215	215
Ending balance at Jan. 31, 2023	$ 1,145	$ 3,325	(185)	(1,995)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common shares issued under stock plans (in shares)		3
Common shares issued under stock plans	(60)	$ (60)
Stock-based compensation expense	693	693
Settlement of liability-classified restricted common shares	15	$ 15
Net income	906			906
Other comprehensive income (loss)	$ (49)		(49)
Repurchase and retirement of common shares (in shares)	(4)	(4)
Repurchase and retirement of common shares	$ (795)	$ (171)		(624)
Ending Balance (in shares) at Jan. 31, 2024	214	214
Ending balance at Jan. 31, 2024	$ 1,855	$ 3,802	$ (234)	$ (1,713)