Summary of Significant Accounting Policies - Deferred Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Accounting Policies [Abstract]
Contract with customer liability	$ 146.8	$ 89.8
Contract with customer liability, revenue recognized	$ 40.9	$ 39.4	$ 25.5