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Goodwill and Intangible Assets (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Aug. 03, 2013
Aug. 04, 2012
Aug. 03, 2013
Aug. 04, 2012
Aug. 03, 2013
Customer Relationships [Member]
Feb. 02, 2013
Customer Relationships [Member]
Aug. 04, 2012
Customer Relationships [Member]
Finite-Lived Intangible Assets              
Gross Carrying Amount         $ 83 [1] $ 475 $ 465
Accumulated Amortization         (9) [1] (272) (244)
Amortization expense 7 10 12 20      
Depreciation and Amortization, Discontinued Operations $ 6 $ 8 $ 9 $ 17      
[1] (1) Excludes the gross carrying amount and accumulated amortization related to Best Buy Europe, which was sold during the quarter ended August 3, 2013.