Restructuring - Schedule of Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Nov. 01, 2025	Nov. 02, 2024	Nov. 01, 2025	Nov. 02, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ (5)	$ (4)	$ 218	$ 4
Fiscal 2026 Labor and Store Optimization Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1)	0	121	0
Best Buy Health Optimization and China Sourcing Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(3)	0	102	0
Fiscal 2024 Restructuring Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	(1)	(4)	(5)	6
Fiscal 2023 Resource Optimization Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 0	$ 0	$ 0	$ (2)