Schedule II: Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Accounts receivable allowances
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	$ 36,844	$ 7,634	$ 2,071
Additions	50,467	47,405	8,583
Write-offs or Deductions	(62,615)	(18,195)	(3,020)
Balance at End of Year	24,696	36,844	7,634
Deferred tax asset valuation allowance
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Year	335,051	36,353	877
Additions	5,511	298,698	35,476
Write-offs or Deductions	(327,957)	0	0
Balance at End of Year	$ 12,605	$ 335,051	$ 36,353