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Goodwill and Intangible Assets (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Nov. 02, 2013
Nov. 03, 2012
Nov. 02, 2013
Nov. 03, 2012
Nov. 02, 2013
Customer Relationships [Member]
Feb. 02, 2013
Customer Relationships [Member]
Nov. 03, 2012
Customer Relationships [Member]
Finite-Lived Intangible Assets              
Gross Carrying Amount         $ 83 [1] $ 475 $ 475
Accumulated Amortization         (11) [1] (272) (262)
Amortization expense 1 10 13 30      
Depreciation and amortization, discontinued operations $ 0 $ 9 $ 9 $ 26      
[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.