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Debt (Details)
In Millions, unless otherwise specified
6 Months Ended 6 Months Ended
Aug. 27, 2011
USD ($)
Feb. 26, 2011
USD ($)
Aug. 28, 2010
USD ($)
Aug. 27, 2011
JPMorgan revolving credit facility
USD ($)
Feb. 26, 2011
JPMorgan revolving credit facility
USD ($)
Aug. 28, 2010
JPMorgan revolving credit facility
USD ($)
Aug. 27, 2011
Europe receivables financing facility
USD ($)
Aug. 27, 2011
Europe receivables financing facility
GBP (£)
Feb. 26, 2011
Europe receivables financing facility
USD ($)
Aug. 28, 2010
Europe receivables financing facility
USD ($)
Aug. 27, 2011
Europe revolving credit facility
USD ($)
Aug. 27, 2011
Europe revolving credit facility
GBP (£)
Feb. 26, 2011
Europe revolving credit facility
USD ($)
Aug. 28, 2010
Europe revolving credit facility
USD ($)
Aug. 27, 2011
Canada revolving demand facility
USD ($)
Feb. 26, 2011
Canada revolving demand facility
USD ($)
Aug. 28, 2010
Canada revolving demand facility
USD ($)
Aug. 27, 2011
China revolving demand facilities
USD ($)
Feb. 26, 2011
China revolving demand facilities
USD ($)
Aug. 28, 2010
China revolving demand facilities
USD ($)
Aug. 27, 2011
ING Bank New RCF [Member]
USD ($)
Aug. 27, 2011
ING Bank New RCF [Member]
GBP (£)
Short-term Debt                                            
Short-term debt $ 392 $ 557 $ 383 $ 0 $ 0 $ 0 $ 386 [1]   $ 455 [1] $ 350 [1] $ 0   $ 98 $ 0 $ 0 $ 0 $ 0 $ 6 $ 4 $ 33    
Line of credit facility, current borrowing capacity             445 277       125                 642 400
Line of credit facility, maximum borrowing capacity               £ 350                            
LIBOR margin, low end of the range (as a percent)                                         0.00% 0.00%
LIBOR margin, high end of the range (as a percent)                                         0.50% 0.50%
Commitment fee on unused available capacity (as a percent)                                         40.00% 40.00%
Initial commitment fee (as a percent)                                         0.75% 0.75%
Reporting period lag for consolidation of financial results (in months) 2                                          
[1] This facility is secured by certain network carrier receivables of Best Buy Europe, which are included within receivables in our condensed consolidated balance sheets. The total amount available for borrowing under this facility is based on a percentage of the available acceptable receivables, as defined in the agreement for the facility, and was £277 (or $445) at August 27, 2011.