Equity Incentive Plans and Stock-Based Compensation - Stock-Based Compensation Expense in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 369,840	$ 515,583	$ 86,167
Cost of revenue | Subscription services
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	11,894	12,232	513
Cost of revenue | Professional services and other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	11,855	29,849	1,860
Sales and marketing
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	154,922	237,975	16,356
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	102,546	135,713	11,435
General and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 88,623	$ 99,814	$ 56,003