Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2021
Lessee, Lease, Description [Line Items]
Additional lease obligation		$ 179,082
Rent expense recognized under operating leases	$ 25,600
Data Center
Lessee, Lease, Description [Line Items]
Additional lease obligation		$ 27,300