Restructuring - Schedule of Restructuring Charges (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jan. 31, 2026	Jan. 31, 2026	Feb. 01, 2025	Feb. 03, 2024
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 190	$ (3)	$ 153
Fiscal 2026 Labor and Store Optimization Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges		117	0
Best Buy Health Optimization and China Sourcing Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 101	101	0	0
Fiscal 2024 Restructuring Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges		(28)	3	171
Fiscal 2023 Resource Optimization Initiative
Restructuring Cost and Reserve [Line Items]
Restructuring charges		$ 0	$ (6)	$ (18)