Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Loss before income tax expense
United States	$ (288,472)	$ (1,338,946)	$ (907,201)
International	23,021	18,163	6,153
Loss before income taxes	(265,451)	(1,320,783)	(901,048)
Current tax provision:
Federal	(2,759)	95	859
State	2,625	271	748
Foreign	15,240	18,527	8,915
Total current tax provision	15,106	18,893	10,522
Deferred tax benefit:
Federal	(1,538)	(305)	(1,306)
State	(290)	(481)	(698)
Foreign	(867)	207	(1,586)
Total deferred tax benefit	(2,695)	(579)	(3,590)
Total tax provision	12,411	18,314	6,932
Reconciliation of federal statutory income tax provision to effective income tax provision
Expected benefit at U.S. federal statutory rate	(55,745)	(277,364)	(189,220)
State income taxes	2,335	(211)	50
Stock-based compensation	63,690	35,097	(31,284)
Research and development tax credits	(32,129)	(30,428)	(37,503)
Non-U.S. tax rate differential	8,659	15,613	5,805
Non-deductible expenses	4,234	4,231	2,064
Change in valuation allowance	24,932	271,662	259,208
Other	(3,565)	(286)	(2,188)
Total tax provision	$ 12,411	$ 18,314	$ 6,932