Leases (Lessee Liability Maturity) (Details) $ in Millions	Jan. 31, 2023 USD ($)
Operating Leases
2024	$ 2,166
2025	2,077
2026	1,917
2027	1,735
2028	1,556
Thereafter	11,018
Total undiscounted lease obligations	20,469
Less imputed interest	(6,168)
Net lease obligations - operating	14,301
Finance Leases
2024	834
2025	774
2026	712
2027	638
2028	545
Thereafter	5,438
Total undiscounted lease obligations	8,941
Less imputed interest	(3,531)
Net lease obligations - financing	$ 5,410