Equity Incentive Plans and Stock-based Compensation - Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 71,475	$ 87,488	$ 225,842	$ 270,520
Cost of revenue | Subscription services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	3,317	5,041	10,873	14,601
Cost of revenue | Professional services and other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	2,359	2,953	7,445	8,438
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	21,589	32,688	68,577	106,377
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	32,249	34,211	102,931	96,007
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 11,961	$ 12,595	$ 36,016	$ 45,097