Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Leases [Abstract]
Sublease income	$ 0.6	$ 0.9	$ 1.0
Lessee, operating lease, lease not yet commenced, undiscounted amount	$ 3.6
Lessee, operating lease, lease not yet commenced, term of contract	6 years