Income Taxes - Components of the Net Income (Loss) before Provision of Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Income Tax Disclosure [Abstract]
Domestic	$ 1,047,318	$ 663,909	$ 16,268
Foreign	54,314	14,125	10,094
Total	$ 1,101,632	$ 678,034	$ 26,362