Taxes - Schedule of Deferred Tax Balances (Details) - USD ($) $ in Millions	Jan. 31, 2025	Jan. 31, 2024
Deferred tax assets:
Loss and tax credit carryforwards	$ 7,539	$ 7,136
Accrued liabilities	3,009	3,066
Share-based compensation	263	238
Lease obligations	4,611	4,831
Other	1,076	1,124
Total deferred tax assets	16,498	16,395
Valuation allowances	(7,405)	(7,485)
Deferred tax assets, net of valuation allowances	9,093	8,910
Deferred tax liabilities:
Property and equipment	4,303	4,813
Acquired intangibles	1,096	898
Inventory	3,336	3,035
Lease right of use assets	4,816	4,941
Mark-to-market investments	353	322
Other	460	486
Total deferred tax liabilities	14,364	14,495
Net deferred tax liabilities	$ 5,271	$ 5,585