Summary of Significant Accounting Policies - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 1,300,201	$ 835,424	$ 586,067
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	1,036,389	701,635	494,529
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 263,812	$ 133,789	$ 91,538