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Comprehensive Income (Tables)
 6 Months Ended
Aug. 27, 2011
Comprehensive Income Disclosure [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The components of accumulated other comprehensive income (loss), net of tax, attributable to Best Buy Co., Inc. were as follows:
 
 
August 27,

2011
 
February 26,

2011
 
August 28,

2010
Foreign currency translation
$
159


 
$
102


 
$
(58
)
Unrealized gains on available-for-sale investments
51


 
72


 
29


Unrealized gains (losses) on derivative instruments (cash flow hedges)
1


 
(1
)
 
4


Total
$
211


 
$
173


 
$
(25
)