Income Taxes - Schedule of Reconciliation of Federal Statutory Income Tax Rate to Income Tax Expense (Current Year) (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2026	Feb. 01, 2025	Feb. 03, 2024
Amount
Federal income tax at the statutory rate	$ 295	$ 272	$ 340
State and local income taxes, net of federal income tax effect	38	52	57
Foreign tax effects:		3	(5)
Effect of cross-border tax laws, net of related foreign tax credits:
Subpart F inclusion	19
Other	(1)
Nontaxable or nondeductible items:
Goodwill impairment	25	63	0
Other	11
Other adjustments:
Exit of a component of Best Buy Health business	(27)
Other	(11)	10	8
Total income tax expense	$ 337	$ 372	$ 381
Percent
U.S. federal income tax at the statutory rate	21.00%
State and local income taxes, net of federal income tax effect	2.70%
Effect of cross-border tax laws, net of related foreign tax credits:
Subpart F inclusion	1.30%
Other	(0.10%)
Nontaxable or nondeductible items:
Goodwill impairment	1.80%
Other	0.80%
Other adjustments:
Exit of a component of Best Buy Health business	(1.90%)
Other	(0.80%)
Effective income tax rate	24.00%	28.70%	23.50%
China
Amount
Foreign tax effects:	$ (20)
Percent
Foreign tax effects:	(1.40%)
Other foreign jurisdictions
Amount
Foreign tax effects:	$ 8
Percent
Foreign tax effects:	0.60%