CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance (in shares) at Jan. 31, 2022		299,037,805
Beginning balance at Jan. 31, 2022	$ 5,780,018	$ 299	$ 3,749,514	$ (17,902)	$ 2,048,107
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		1,087,238
Issuance of common stock upon exercise of stock options	7,052	$ 1	7,051
Issuance of common stock upon release of restricted stock units (in shares)		2,865,551
Issuance of common stock upon release of restricted stock units	0	$ 3	(3)
Issuance of common stock for employee stock purchase plan (in shares)		373,259
Issuance of common stock for employee stock purchase plan	34,604		34,604
Repurchases of common stock (in shares)		(11,044,500)
Repurchases of common stock	(990,778)	$ (11)	(990,767)
Stock-based compensation expense	771,969		771,969
Other comprehensive income (loss)	(54,814)			(54,814)
Net income	207,761				207,761
Ending balance (in shares) at Oct. 31, 2022		292,319,353
Ending balance at Oct. 31, 2022	5,755,812	$ 292	3,572,368	(72,716)	2,255,868
Beginning balance (in shares) at Jul. 31, 2022		298,086,507
Beginning balance at Jul. 31, 2022	5,990,397	$ 298	3,830,745	(48,161)	2,207,515
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		229,183
Issuance of common stock upon exercise of stock options	1,809		1,809
Issuance of common stock upon release of restricted stock units (in shares)		959,192
Issuance of common stock upon release of restricted stock units	0	$ 1	(1)
Repurchases of common stock (in shares)		(6,955,529)
Repurchases of common stock	(564,832)	$ (7)	(564,825)
Stock-based compensation expense	304,640		304,640
Other comprehensive income (loss)	(24,555)			(24,555)
Net income	48,353				48,353
Ending balance (in shares) at Oct. 31, 2022		292,319,353
Ending balance at Oct. 31, 2022	5,755,812	$ 292	3,572,368	(72,716)	2,255,868
Beginning balance (in shares) at Jan. 31, 2023		293,822,850
Beginning balance at Jan. 31, 2023	$ 6,206,607	$ 294	4,104,880	(50,385)	2,151,818
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	1,214,532	1,214,532
Issuance of common stock upon exercise of stock options	$ 8,336	$ 1	8,335
Issuance of common stock upon release of restricted stock units (in shares)		8,747,679
Issuance of common stock upon release of restricted stock units	0	$ 9	(9)
Issuance of common stock for employee stock purchase plan (in shares)		552,904
Issuance of common stock for employee stock purchase plan	32,513	$ 1	32,512
Stock-based compensation expense	804,039		804,039
Other comprehensive income (loss)	23,276			23,276
Net income	338,630				338,630
Ending balance (in shares) at Oct. 31, 2023		304,337,965
Ending balance at Oct. 31, 2023	7,413,401	$ 305	4,949,757	(27,109)	2,490,448
Beginning balance (in shares) at Jul. 31, 2023		300,956,027
Beginning balance at Jul. 31, 2023	7,002,352	$ 302	4,689,521	(36,707)	2,349,236
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		169,610
Issuance of common stock upon exercise of stock options	650		650
Issuance of common stock upon release of restricted stock units (in shares)		3,212,328
Issuance of common stock upon release of restricted stock units	0	$ 3	(3)
Stock-based compensation expense	259,589		259,589
Other comprehensive income (loss)	9,598			9,598
Net income	141,212				141,212
Ending balance (in shares) at Oct. 31, 2023		304,337,965
Ending balance at Oct. 31, 2023	$ 7,413,401	$ 305	$ 4,949,757	$ (27,109)	$ 2,490,448