Restructuring Charges - Fiscal 2013 Europe (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended							9 Months Ended							21 Months Ended
	Nov. 01, 2014		Nov. 02, 2013		Nov. 01, 2014		Nov. 02, 2013		Nov. 01, 2014 Discontinued Operations [Member]	Nov. 02, 2013 Discontinued Operations [Member]	Feb. 28, 2009 Best Buy Europe [Member]	Nov. 02, 2013 Restructuring Program 2013 Europe [Member]		Nov. 02, 2013 Restructuring Program 2013 Europe [Member] Termination benefits [Member]		Nov. 02, 2013 Restructuring Program 2013 Europe [Member] Facility closure and other costs [Member]	Nov. 01, 2014 Restructuring Program 2013 Europe [Member] Discontinued Operations [Member]	Nov. 02, 2013 Restructuring Program 2013 Europe [Member] Discontinued Operations [Member]	May 03, 2014 Restructuring Program 2013 Europe [Member] Discontinued Operations [Member] International [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges					$ 17		$ 144					$ 38		$ 36		$ 2
Restructuring charges	0	[1]	0	[1]	0	[1]	100	[1]	0	100							0	95
Business Acquisition, Percentage of Voting Interests Acquired											50.00%
Cumulative Amount												95							131
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period												5		0		5
Cash payments												(9)		(2)		(7)
Restructuring reserve, balance at the end of the period												0		0		0
Adjustments												$ (34)	[2]	$ (34)	[2]	$ 0

[1] See Note 5, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

[2] (1)Represents the remaining liability written off as a result of the sale of Best Buy Europe, as described in Note 2, Discontinued Operations.