Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (525,586)	$ (92,393)	$ (519,933)
Other comprehensive income (loss), net of tax:
Unrealized loss on available-for-sale marketable securities, net	(318)	(17)	0
Foreign currency translation adjustments	23,738	(18,730)	5,174
Other comprehensive income (loss)	23,420	(18,747)	5,174
Comprehensive loss	$ (502,166)	$ (111,140)	$ (514,759)