Leases - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Lessee, Lease, Description [Line Items]
Lease-related asset impairments	$ 103.7	$ 0.0	$ 0.0
Weighted average remaining lease term	6 years 10 months 24 days	7 years 3 months 18 days
Weighted average discount rate	2.46%	2.69%
Operating lease minimum payments, executed leases that have not commenced	$ 0.0
Facility Closure
Lessee, Lease, Description [Line Items]
Asset impairment charges	103.7
Lease-related asset impairments	74.8
Other asset impairment charges	$ 28.9
Minimum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term	1 year
Lease renewal term	1 year
Optional termination period	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term	68 years
Lease renewal term	10 years
Optional termination period	8 years