Leases - Narrative (Details)	3 Months Ended	6 Months Ended
	Jul. 31, 2025 USD ($)	Jul. 31, 2025 USD ($)
Lessee, Lease, Description [Line Items]
Lease-related asset impairments	$ 2,000,000	$ 11,000,000
Sublease income payments		60,000,000
Sublease income payments, expect to receive, for fiscal 2026 through fiscal 2030	40,000,000	40,000,000
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	65 years	65 years
Lease renewal term	7 years	7 years
Optional termination period	5 years	5 years