Restructuring Charges - Fiscal 2013 Europe (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended							21 Months Ended
	May 03, 2014	May 04, 2013	May 04, 2013 Restructuring Program 2013 Europe [Member]	May 04, 2013 Restructuring Program 2013 Europe [Member] Termination benefits [Member]	May 04, 2013 Restructuring Program 2013 Europe [Member] Facility closure and other costs [Member]	May 03, 2014 Discontinued Operations [Member] Restructuring Program 2013 Europe [Member]	May 04, 2013 Discontinued Operations [Member] Restructuring Program 2013 Europe [Member]	May 03, 2014 Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International [Member]	Feb. 28, 2009 Best Buy Europe [Member]
Restructuring Cost and Reserve [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired									50.00%
Restructuring charges	$ 3	$ 59	$ 53			$ 0	$ 53	$ 131
Restructuring Reserve [Roll Forward]
Restructuring reserve, balance at the beginning of the period			5	0	5
Charges	3	6	4	2	2
Cash payments			(5)	(1)	(4)
Restructuring reserve, balance at the end of the period			$ 4	$ 1	$ 3