Revenue, Accounts Receivable, Deferred Revenue and Remaining Performance Obligations - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Disaggregation of Revenue [Line Items]
Allowance for doubtful accounts	$ 1.3	$ 2.6
Revenue recognized	535.8	$ 257.9	$ 89.1
Remaining performance obligation	$ 2,600.0
Contract with original term exceed one year, percentage	77.00%
Contracts With Original Terms Exceeding One Year
Disaggregation of Revenue [Line Items]
Weighted average term	2 years 6 months