Restructuring Charges - Fiscal 2013 Europe Restructuring (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended								11 Months Ended		12 Months Ended		11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended			11 Months Ended	12 Months Ended			11 Months Ended	12 Months Ended			11 Months Ended	12 Months Ended		11 Months Ended	12 Months Ended	18 Months Ended	11 Months Ended	12 Months Ended	18 Months Ended	11 Months Ended	12 Months Ended	18 Months Ended	11 Months Ended	12 Months Ended	18 Months Ended	11 Months Ended	12 Months Ended	18 Months Ended	11 Months Ended	12 Months Ended	18 Months Ended
	Feb. 01, 2014	Nov. 02, 2013	Aug. 03, 2013	May 04, 2013	Feb. 02, 2013	Nov. 03, 2012	Aug. 04, 2012	May 05, 2012	Feb. 02, 2013	Jan. 28, 2012	Feb. 01, 2014	Mar. 03, 2012	Feb. 02, 2013 Discontinued Operations [Member]	Feb. 01, 2014 Discontinued Operations [Member]	Mar. 03, 2012 Discontinued Operations [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain]		Mar. 03, 2012 Restructuring Program 2013 Europe [Member] [Domain] [Domain]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Employee Severance [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Employee Severance [Member]		Mar. 03, 2012 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Employee Severance [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Facility Closing [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Facility Closing [Member]		Mar. 03, 2012 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Facility Closing [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member]	Mar. 03, 2012 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Inventory write-downs [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Inventory write-downs [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Inventory write-downs [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Property and equipment write-downs [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Property and equipment write-downs [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Property and equipment write-downs [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Employee Severance [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Employee Severance [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Employee Severance [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Impairment of Intangible Assets Related to Restructuring [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Impairment of Intangible Assets Related to Restructuring [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Impairment of Intangible Assets Related to Restructuring [Member]	Feb. 02, 2013 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Facility Closing [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Facility Closing [Member]	Feb. 01, 2014 Restructuring Program 2013 Europe [Member] [Domain] [Domain] Discontinued Operations [Member] International [Member] Facility Closing [Member]	Feb. 28, 2009 Best Buy Europe [Member]
Restructuring Cost and Reserve [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired																																																	50.00%
Restructuring Reserve																$ 5	$ 0		$ 0	$ 0	$ 0		$ 0	$ 5	$ 0		$ 0
Restructuring charges	115	31	7	6	169	34	91	127	449	280	259	287	34	100	239													36	95	0	36	95	131	0	7	7	12	45	57	19	36	55	0	4	4	5	3	8
Restructuring charges									414	24	159	29				24	38			19	36			5	2
Payments for Restructuring																19	9			19	2			0	7
Restructuring Reserve, Accrual Adjustment																	$ 34	[1]			$ 34	[1]			$ 0	[1]

[1] (1) Represents the remaining liability written off as a result of the sale of Best Buy Europe, as described in Note 4, Discontinued Operations.