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, 2026	Jan. 31, 2025	Jan. 31, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 4,683,946	$ 3,626,396	$ 2,806,489
United States
Disaggregation of Revenue [Line Items]
Revenue	3,523,974	2,761,664	2,166,448
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	125,278	101,943	72,784
EMEA
Disaggregation of Revenue [Line Items]
Revenue	763,650	574,748	432,634
Asia-Pacific and Japan
Disaggregation of Revenue [Line Items]
Revenue	$ 271,044	$ 188,041	$ 134,623