Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (98,858)	$ (68,595)	$ (284,998)	$ (199,392)
Other comprehensive income (loss):
Change in unrealized losses on investments	(8,436)	0	(10,903)	0
Foreign currency translation adjustments	0	0	0	290
Total comprehensive loss	$ (107,294)	$ (68,595)	$ (295,901)	$ (199,102)