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)		858,055
Issuance of common stock upon exercise of stock options	5,243	$ 1	5,242
Issuance of common stock upon release of restricted stock units (in shares)		1,906,359
Issuance of common stock upon release of restricted stock units	0	$ 2	(2)
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
Repurchase of common stock (in shares)		(4,088,971)
Repurchases of common stock	(425,946)	$ (4)	(425,942)
Stock-based compensation expense	467,329		467,329
Other comprehensive income (loss)	(30,259)			(30,259)
Net income	159,408				159,408
Ending balance (in shares) at Jul. 31, 2022		298,086,507
Ending balance at Jul. 31, 2022	5,990,397	$ 298	3,830,745	(48,161)	2,207,515
Beginning balance (in shares) at Apr. 30, 2022		298,824,233
Beginning balance at Apr. 30, 2022	5,947,887	$ 299	3,831,060	(45,237)	2,161,765
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		314,537
Issuance of common stock upon exercise of stock options	1,899		1,899
Issuance of common stock upon release of restricted stock units (in shares)		1,439,199
Issuance of common stock upon release of restricted stock units	0	$ 2	(2)
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
Repurchase of common stock (in shares)		(2,864,721)
Repurchases of common stock	(293,534)	$ (3)	(293,531)
Stock-based compensation expense	256,715		256,715
Other comprehensive income (loss)	(2,924)			(2,924)
Net income	45,750				45,750
Ending balance (in shares) at Jul. 31, 2022		298,086,507
Ending balance at Jul. 31, 2022	5,990,397	$ 298	3,830,745	(48,161)	2,207,515
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)	1,044,922	1,044,922
Issuance of common stock upon exercise of stock options	$ 7,686	$ 1	7,685
Issuance of common stock upon release of restricted stock units (in shares)		5,535,351
Issuance of common stock upon release of restricted stock units	0	$ 6	(6)
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	544,450		544,450
Other comprehensive income (loss)	13,678			13,678
Net income	197,418				197,418
Ending balance (in shares) at Jul. 31, 2023		300,956,027
Ending balance at Jul. 31, 2023	7,002,352	$ 302	4,689,521	(36,707)	2,349,236
Beginning balance (in shares) at Apr. 30, 2023		297,455,726
Beginning balance at Apr. 30, 2023	6,524,107	$ 298	4,391,418	(34,871)	2,167,262
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)		542,954
Issuance of common stock upon exercise of stock options	3,417		3,417
Issuance of common stock upon release of restricted stock units (in shares)		2,404,443
Issuance of common stock upon release of restricted stock units	0	$ 3	(3)
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	262,177		262,177
Other comprehensive income (loss)	(1,836)			(1,836)
Net income	181,974				181,974
Ending balance (in shares) at Jul. 31, 2023		300,956,027
Ending balance at Jul. 31, 2023	$ 7,002,352	$ 302	$ 4,689,521	$ (36,707)	$ 2,349,236