Leases - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Lessee, Lease, Description [Line Items]
Lease-related asset impairments	$ 0	$ 9,000,000	$ 29,000,000
Weighted average remaining lease term	5 years 9 months 18 days	6 years 2 months 12 days
Weighted average discount rate	2.90%	2.86%
Public income remaining lease term	7 years 1 month 6 days
Sublease income	$ 8,000,000	$ 8,000,000	$ 5,000,000
Sublease income payments	64,000,000
Sublease income payments, expect to receive, for fiscal 2025 through fiscal 2029	34,000,000
Sublease income payments, expect to receive, thereafter	30,000,000
Total non cancellable purchase commitments	843,000,000
Operating Lease, Lease Not yet Commenced
Lessee, Lease, Description [Line Items]
Total non cancellable purchase commitments	$ 0
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	65 years
Lease renewal term	8 years
Optional termination period	5 years