Taxes - Schedule of Deferred Tax Balances (Details) - USD ($) $ in Millions	Jan. 31, 2024	Jan. 31, 2023
Deferred tax assets:
Loss and tax credit carryforwards	$ 7,136	$ 7,690
Accrued liabilities	3,066	3,312
Share-based compensation	238	237
Lease obligations	4,831	4,653
Other	1,124	839
Total deferred tax assets	16,395	16,731
Valuation allowances	(7,485)	(7,815)
Deferred tax assets, net of valuation allowances	8,910	8,916
Deferred tax liabilities:
Property and equipment	4,813	4,352
Acquired intangibles	898	932
Inventory	3,035	3,032
Lease right of use assets	4,941	4,727
Mark-to-market investments	322	1,390
Other	486	249
Total deferred tax liabilities	14,495	14,682
Net deferred tax liabilities	$ 5,585	$ 5,766