Revenue, Accounts Receivable, Deferred Revenue, and Remaining Performance Obligations - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 497,248	$ 272,198	$ 919,619	$ 501,112
Product revenue
Disaggregation of Revenue [Line Items]
Revenue	466,268	254,623	860,702	468,453
Professional services and other revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 30,980	$ 17,575	$ 58,917	$ 32,659