Restructuring Charges Restructuring Charges - Renew Blue (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended							6 Months Ended		6 Months Ended		6 Months Ended				9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	9 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 Renew Blue [Member]	Feb. 02, 2013 Restructuring Program 2013 Renew Blue [Member]	Aug. 03, 2013 Restructuring Program 2013 Renew Blue [Member] Termination benefits [Member]	Feb. 02, 2013 Restructuring Program 2013 Renew Blue [Member] Termination benefits [Member]	Aug. 03, 2013 Restructuring Program 2013 Renew Blue [Member] Facility closure and other costs [Member]	Feb. 02, 2013 Restructuring Program 2013 Renew Blue [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Investments Impairment Charge Related to Restructuring [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Investments Impairment Charge Related to Restructuring [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Investments Impairment Charge Related to Restructuring [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Investments Impairment Charge Related to Restructuring [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] Domestic Segment [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Inventory write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Investments Impairment Charge Related to Restructuring [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Investments Impairment Charge Related to Restructuring [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 Renew Blue [Member] International Segment [Member] Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve								$ 68	$ 108	$ 11	$ 54	$ 57	$ 54
Restructuring charges			113	223				21						13	218	21	0	192	0	1	3	33	14	69	0	27	4	62	10	94	0	1	2	9	8	54	0	27	0	3	11	98	0	0	1	24	6	15	0	0	4	59
Restructuring charges	7	91	13	218				24		15		9
Payments for Restructuring								64		53		11
Restructuring Reserve, Accrual Adjustment					(34)	[1]	0	(3)		5		(8)
Restructuring Reserve, Translation Adjustment								$ (3)		$ 0		$ (3)

[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.