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Comprehensive Income (Tables)
 3 Months Ended
May 04, 2013
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The following tables provide a reconciliation of the components of accumulated other comprehensive income, net of tax, attributable to Best Buy Co., Inc. for the three months ended May 4, 2013 and May 5, 2012 ($ in millions):
 
Foreign Currency Translation
 
Available-For-Sale Investments
 
Total
Balances at February 2, 2013
$
113

 
$
(1
)
 
$
112

Foreign currency translation adjustments
(33
)
 
—

 
(33
)
Unrealized losses on available-for-sale investments
—

 
3

 
3

Balances at May 4, 2013
$
80

 
$
2

 
$
82



 
Foreign Currency Translation
 
Available-For-Sale Investments
 
Total
Balances at March 3, 2012
$
93

 
$
(3
)
 
$
90

Adjustment for fiscal year change
(15
)
 
(1
)
 
(16
)
Balance at January 28, 2012
78

 
(4
)
 
74

Foreign currency translation adjustments
23

 
—

 
23

Unrealized losses on available-for-sale investments
—

 
1

 
1

Balances at May 5, 2012
$
101

 
$
(3
)
 
$
98