Restructuring Charges Restructuring Charges - Fiscal 2013 Europe (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended								6 Months Ended		6 Months Ended		6 Months Ended					12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended
	Aug. 03, 2013	Aug. 04, 2012	Aug. 03, 2013	Aug. 04, 2012	Aug. 03, 2013 Termination benefits [Member]		Aug. 03, 2013 Facility closure and other costs [Member]	Aug. 03, 2013 Restructuring Program 2013 Europe [Member]		Feb. 02, 2013 Restructuring Program 2013 Europe [Member]	Aug. 03, 2013 Restructuring Program 2013 Europe [Member] Termination benefits [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] Termination benefits [Member]	Aug. 03, 2013 Restructuring Program 2013 Europe [Member] Facility closure and other costs [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member]	Aug. 04, 2012 Segment, Discontinued Operations [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member]	Aug. 04, 2012 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Impairment of Intangible Assets Related to Restructuring [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Impairment of Intangible Assets Related to Restructuring [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Discontinued Operations [Member] Restructuring Program 2013 Europe [Member] International Segment [Member] Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve								$ 0		$ 5	$ 0	$ 0	$ 0	$ 5
Restructuring charges			113	223				95							100	5	95	0	95	131	7	7	45	57	36	55	4	4	3	8
Restructuring charges	7	91	13	218				38			36		2
Payments for Restructuring								9			2		7
Restructuring Reserve, Accrual Adjustment					$ (34)	[1]	$ 0	$ (34)	[1]

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