Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Statement of Comprehensive Income [Abstract]
Net loss	$ (158,219)	$ (84,480)	$ (362,861)	$ (266,446)
Other comprehensive income (loss):
Foreign currency translation adjustment	(7,697)	(5,943)	(3,370)	(25,446)
Reclassification adjustment for net realized gains on short-term investments included in net income, net of tax	0	0	449	0
Unrealized loss on short-term investments, net of tax	0	(86)	0	(1,389)
Other comprehensive income (loss)	(7,697)	(6,029)	(2,921)	(26,835)
Comprehensive loss	$ (165,916)	$ (90,509)	$ (365,782)	$ (293,281)