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, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Disaggregation of Revenue [Line Items]
Revenue	$ 1,212,909	$ 942,094	$ 3,399,952	$ 2,639,626
United States
Disaggregation of Revenue [Line Items]
Revenue	912,638	719,325	2,558,614	2,014,996
Other Americas
Disaggregation of Revenue [Line Items]
Revenue	32,166	26,269	92,397	72,781
EMEA
Disaggregation of Revenue [Line Items]
Revenue	199,421	147,205	553,545	416,734
Asia-Pacific and Japan
Disaggregation of Revenue [Line Items]
Revenue	$ 68,684	$ 49,295	$ 195,396	$ 135,115