Goodwill and Intangible Assets - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Nov. 01, 2025	Aug. 02, 2025	Nov. 02, 2024	Nov. 01, 2025	Nov. 02, 2024	Feb. 01, 2025	[1]
Intangible Assets [Line Items]
Goodwill	$ 790		$ 1,383	$ 790	$ 1,383	$ 908
Goodwill and intangible assets impairment charges	171		$ 0	171	$ 0
Impairment		$ 16
Domestic | Best Buy Health
Intangible Assets [Line Items]
Goodwill impairment	118
Goodwill	$ 298			$ 298

[1] The Consolidated Balance Sheet as of February 1, 2025, has been condensed from the audited consolidated financial statements.