Debt - Short-Term Debt (Details) In Millions, unless otherwise specified	11 Months Ended		12 Months Ended														12 Months Ended
	Feb. 02, 2013 USD ($)		Feb. 01, 2014 USD ($)		Feb. 01, 2014 U.S. revolving credit facility [Member] USD ($)	Feb. 01, 2014 New U.S. revolving credit facility, 364 Day [Member] [Domain]	Aug. 03, 2013 New U.S. revolving credit facility, 364 Day [Member] [Domain]	Feb. 01, 2014 U.S. revolving credit facility - 364-Day [Member] USD ($)	Feb. 01, 2014 U.S. revolving credit facility - Five-Year [Member]	Oct. 31, 2011 U.S. revolving credit facility - Five-Year [Member] USD ($)	Feb. 01, 2014 JPMorgan revolving credit facility [Member] USD ($)	Feb. 01, 2014 Europe revolving credit facility [Member] USD ($)	Feb. 01, 2014 Europe revolving credit facility [Member] GBP (£)	Feb. 02, 2013 Europe revolving credit facility [Member] USD ($)	Feb. 01, 2014 Canada revolving demand facility [Member] USD ($)	Feb. 01, 2014 China revolving demand facilities [Member] USD ($)	Feb. 01, 2014 Notes due 2018 [Member]
Short-term Debt
Redemption price upon control triggering event, percentage of principal amount (as a percent)																	101.00%
Short-term debt	$ 596		$ 0									$ 0		$ 596
Weighted-average interest rate (as a percent)														2.00%
Maximum month-end outstanding during the year	596	[1]	597	[1]
Average amount outstanding during the year	477	[1]	135	[1]
Line of credit facility, current borrowing capacity					2,000			500		1,500	1,000		400
Line of credit facility, amount outstanding					0										0	0
Line of credit facility, maximum borrowing capacity					2,500										4	158
Line of credit facility, letter of credit sublimit					$ 300
Debt instrument, basis spread on federal funds rate (as a percent)						0.50%			0.50%
Debt instrument, basis spread on LIBOR (as a percent)						1.00%			1.00%
Debt instrument, lower range on ABR (as a percent)							0.00%		0.00%
Debt instrument, higher range on ABR (as a percent)							0.60%		0.475%
LIBOR margin, low end of the range (as a percent)							0.925%		0.875%
LIBOR margin, high end of the range (as a percent)							1.60%		1.475%
Debt instrument, lower range on facility fee (as a percent)							0.075%		0.125%
Debt instrument, higher range on facility fee (as a percent)							0.275%		0.275%

[1] (1)Amounts relate to our previous £400 million Europe unsecured revolving credit facility agreement (the "RCF"). Interest rates under the previous RCF were variable, based on LIBOR plus an applicable margin based on Best Buy Europe's fixed charges coverage ratio. As described in Note 4, Discontinued Operations, we sold our interest in Best Buy Europe on June 26, 2013.