Revenue, Accounts Receivable, Deferred Revenue, and Remaining Performance Obligations - Revenue from External Customers by Geographic Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Disaggregation of Revenue [Line Items]
Revenue	$ 3,626,396	$ 2,806,489	$ 2,065,659
United States
Disaggregation of Revenue [Line Items]
Revenue	2,761,664	2,166,448	1,633,843
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	101,943	72,784	46,577
EMEA
Disaggregation of Revenue [Line Items]
Revenue	574,748	432,634	292,666
Asia-Pacific and Japan
Disaggregation of Revenue [Line Items]
Revenue	$ 188,041	$ 134,623	$ 92,573