Restructuring Charges Restructuring Charges - Fiscal 2013 U.S. (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended					5 Months Ended	6 Months Ended				5 Months Ended	6 Months Ended			5 Months Ended	6 Months Ended			3 Months Ended	6 Months Ended						18 Months Ended	6 Months Ended		18 Months Ended	6 Months Ended		18 Months Ended	6 Months Ended		18 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. 04, 2012 Restructuring Program 2013 U.S. [Member]	Aug. 03, 2013 Restructuring Program 2013 U.S. [Member]	Aug. 04, 2012 Restructuring Program 2013 U.S. [Member]	Feb. 02, 2013 Restructuring Program 2013 U.S. [Member]	Mar. 03, 2012 Restructuring Program 2013 U.S. [Member]	Aug. 04, 2012 Restructuring Program 2013 U.S. [Member] Termination benefits [Member]	Aug. 03, 2013 Restructuring Program 2013 U.S. [Member] Termination benefits [Member]	Feb. 02, 2013 Restructuring Program 2013 U.S. [Member] Termination benefits [Member]	Mar. 03, 2012 Restructuring Program 2013 U.S. [Member] Termination benefits [Member]	Aug. 04, 2012 Restructuring Program 2013 U.S. [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Restructuring Program 2013 U.S. [Member] Facility closure and other costs [Member]	Feb. 02, 2013 Restructuring Program 2013 U.S. [Member] Facility closure and other costs [Member]	Mar. 03, 2012 Restructuring Program 2013 U.S. [Member] Facility closure and other costs [Member]	May 05, 2012 Restructuring Charges 2013 [Member] Domestic Segment [Member] store	Aug. 03, 2013 Segment, Continuing Operations [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Property and equipment write-downs [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Property and equipment write-downs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Termination benefits [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Termination benefits [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Facility closure and other costs [Member]	Aug. 04, 2012 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Facility closure and other costs [Member]	Aug. 03, 2013 Segment, Continuing Operations [Member] Restructuring Program 2013 U.S. [Member] Domestic Segment [Member] Facility closure and other costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve								$ 153	$ 72	$ 153	$ 117	$ 0	$ 45	$ 0	$ 4	$ 0	$ 108	$ 72	$ 113	$ 0
Number of Stores to be Closed																					49
Restructuring charges			113	223					(8)	224												13	218	(8)	224	(8)	224	249	0	27	29	0	81	77	(8)	116	143
Restructuring charges	7	91	13	218				223	3				107	0			116	3
Payments for Restructuring								37	33				35	2			2	31
Restructuring Reserve, Accrual Adjustment					$ (34)	[1]	$ 0	$ 33	$ 15				$ 27	$ 2			$ 6	$ 13

[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.