Discontinued Operations (Details) In Millions, unless otherwise specified	0 Months Ended			3 Months Ended				9 Months Ended
	Jul. 03, 2013 USD ($)	Jun. 26, 2013 USD ($)	Jun. 26, 2013 GBP (£)	Nov. 02, 2013 USD ($)		Nov. 03, 2012 USD ($)		Nov. 02, 2013 USD ($)		Nov. 03, 2012 USD ($)		Feb. 02, 2013 USD ($)	Jan. 28, 2012 USD ($)	Jun. 26, 2013 Best Buy Europe [Member] USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other Tax Expense (Benefit)				$ 16
Proceeds from divestiture of businesses		526	341
Amount of shares received from divestiture of business	123	123	80
Future cash consideration from divestiture of business, due in one year		39	25
Future cash consideration from divestiture of business, due in two years		39	25
Interest rate on future cash consideration from divestiture of business		2.50%	2.50%
Cash and cash equivalents				2,170		309		2,170		309		1,826	1,199	597
Receivables				1,123		2,250		1,123		2,250		2,704		1,295
Merchandise inventories				6,978		8,156		6,978		8,156		6,571		554
Other current assets				963		1,131		963		1,131		946		168
Net property and equipment				2,726		3,407		2,726		3,407		3,270		159
Other assets				364		524		364		524		522		316
Total Assets				15,068		17,556		15,068		17,556		16,787		3,089
Accounts payable				6,578		7,933		6,578		7,933		6,951		790
Short-term debt				0		310		0		310		596		973
Other current liabilities														1,145
Long-term liabilities				1,035		1,122		1,035		1,122		1,109		65
Total liabilities														2,973
Revenue				0		1,372		2,682		3,825
Restructuring charges				0	[1]	6	[1]	100	[1]	(1)	[1]
Gain (loss) from discontinued operations before income tax benefit (expense)				0		17		(235)		(55)
Income tax benefit (expense)				10	[2]	(6)		34		14
Gain on sale of discontinued operations				0		0		52		0
Equity in loss of affiliates				0		(1)		0		(4)
Net gain (loss) from discontinued operations, including noncontrolling interests				10		10		(149)		(45)
Net (gain) loss from discontinued operations attributable to noncontrolling interests				1		(11)		11		14
Net gain (loss) from discontinued operations attributable to Best Buy Co., Inc. shareholders				11		(1)		(138)		(31)
Income tax benefit, intraperiod tax allocation				$ (6)

[1] See Note 6, Restructuring Charges, for further discussion of the restructuring charges associated with discontinued operations.

[2] Income tax benefit for the three months ended November 2, 2013 includes a $16 million benefit related to the impairment of our investment in Best Buy Europe, partially offset by $(6) million of expense related to a tax allocation between continuing and discontinued operations. The fiscal 2014 effective tax rate for discontinued operations differs from the statutory tax rate primarily due to the tax allocation, restructuring charges and the impairment of our investment in Best Buy Europe. The restructuring charges and impairment generally included minimal related tax benefit. The deferred tax assets related to the restructuring charges generally resulted in an increase in the valuation allowance in an equal amount, while the investment impairment is generally not tax deductible.