Restructuring (Schedule of Restructuring Charges) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Aug. 02, 2025	Aug. 03, 2024	Aug. 02, 2025	Aug. 03, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 114	$ (7)	$ 223	$ 8
Fiscal 2026 Labor and Store Optimization Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	122	0	122	0
Best Buy Health Optimization and China Sourcing Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(6)	0	105	0
Fiscal 2024 Restructuring Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(2)	(6)	(4)	10
Fiscal 2023 Resource Optimization Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ (1)	$ 0	$ (2)