Restructuring - Schedule of Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 01, 2026	Aug. 02, 2025	Aug. 01, 2026	Aug. 02, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (6)	$ 114	$ (15)	$ 223
Fiscal 2026 Labor and Store Optimization Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(3)	122	(11)	122
Best Buy Health Optimization and China Sourcing Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1)	(6)	(2)	105
Fiscal 2024 Restructuring Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (2)	$ (2)	$ (2)	$ (4)

- Definition

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