Balance Sheet Components - Rollforward of Allowance For Credit Losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 17,000	$ 20,500
Provision for credit losses	25,606	8,029
Write-offs	(19,406)	(11,029)
Ending balance	$ 23,200	$ 17,500