Profit Share Buy-Out (Details) (USD $)	3 Months Ended	11 Months Ended			12 Months Ended			11 Months Ended	12 Months Ended
	Aug. 30, 2008	Feb. 02, 2013		Jan. 28, 2012	Feb. 01, 2014	Mar. 03, 2012		Feb. 02, 2013 International [Member]	Feb. 01, 2014 International [Member]	Mar. 03, 2012 International [Member]	Mar. 03, 2012 Best Buy Europe [Member]	Feb. 28, 2009 Carphone Warehouse Group plc [Member]	Feb. 28, 2009 Best Buy Europe [Member]
Profit Share Buy-Out [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired													50.00%
Percentage Noncontrolling Interests Held												50.00%
Profit share agreement, buy-out price											$ 1,300,000,000
Goodwill acquisitions	1,500,000,000	15,000,000	[1]			94,000,000	[2]	0		0
Goodwill impairments		$ 822,000,000		$ 0	$ 0	$ 0		$ 819,000,000	$ 0	$ 1,200,000,000

[1] Represents goodwill acquired, primarily as a result of an acquisition made by mindSHIFT in fiscal 2013 (11-month).

[2] (1)Represents goodwill acquired, primarily as a result of the mindSHIFT acquisition in fiscal 2012.