Leases and Other Commitments - Maturities of Lease Liabilities (Details) - USD ($) $ in Millions	Jan. 31, 2022	Jan. 31, 2021
Operating Leases
Fiscal 2023	$ 745
Fiscal 2024	561
Fiscal 2025	483
Fiscal 2026	417
Fiscal 2027	369
Thereafter	1,076
Total minimum lease payments	3,651
Less: Imputed interest	(262)
Total	3,389	$ 3,608
Finance Leases
Fiscal 2023	120
Fiscal 2024	121
Fiscal 2025	112
Fiscal 2026	45
Fiscal 2027	0
Thereafter	0
Total minimum lease payments	398
Less: Imputed interest	(13)
Total	$ 385	$ 128