Leases - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Lessee, Lease, Description [Line Items]
Lease-related asset impairments	$ 1,000,000	$ 0	$ 12,000,000	$ 0
Sublease income payments			57,000,000
Sublease income payments, expect to receive, for fiscal 2026 through fiscal 2030	37,000,000		37,000,000
Sublease income payments, expect to receive, thereafter	20,000,000		20,000,000
Operating Lease, Lease Not yet Commenced
Lessee, Lease, Description [Line Items]
Aggregate purchase commitments	$ 0		$ 0
Minimum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term	1 year		1 year
Lease renewal term	1 year		1 year
Optional termination period	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease remaining lease term	64 years		64 years
Lease renewal term	5 years		5 years
Optional termination period	4 years		4 years