Revenue, Accounts Receivable, Deferred Revenue, and Remaining Performance Obligations - Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 557,028	$ 334,441	$ 1,476,647	$ 835,553
United States
Disaggregation of Revenue [Line Items]
Revenue	441,432	265,605	1,171,641	669,172
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	11,637	7,703	31,316	18,860
EMEA
Disaggregation of Revenue [Line Items]
Revenue	79,326	47,671	207,010	117,149
Asia-Pacific and Japan
Disaggregation of Revenue [Line Items]
Revenue	$ 24,633	$ 13,462	$ 66,680	$ 30,372