Convertible Preferred Stock and Stockholders Equity (Deficit) - Summary of Changes In Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jul. 31, 2022	Apr. 30, 2022	Jul. 31, 2021	Apr. 30, 2021	Jul. 31, 2022	Jul. 31, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 1,880,194	$ 1,921,917	$ 1,899,541	$ (803,704)	$ 1,921,917	$ (803,704)
Other comprehensive income, net of tax	709	(458)	3,696	4,227	251	7,923
Ending Balance	1,849,549	1,880,194	1,898,953	1,899,541	1,849,549	1,898,953
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	10,441	10,899	(8,294)	(12,521)	10,899	(12,521)
Other comprehensive income, net of tax	709	(458)	3,696	4,227
Ending Balance	11,150	10,441	(4,598)	(8,294)	11,150	(4,598)
Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		11,234		(12,504)	11,234	(12,504)
Other comprehensive income, net of tax					552	7,914
Ending Balance	11,786		(4,590)		11,786	(4,590)
Unrealized Gain (Loss) on Marketable Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		$ (335)		$ (17)	(335)	(17)
Other comprehensive income, net of tax					(301)	9
Ending Balance	$ (636)		$ (8)		$ (636)	$ (8)