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Canadian Leasehold Acquisition (Details) (Canadian Leasehold Acquisition, USD $)
In Millions, unless otherwise specified
1 Months Ended 12 Months Ended
Jan. 29, 2011
site
Jan. 28, 2012
site
Leasehold acquisition    
Arrangement to purchase leasehold interests, maximum number of leasehold sites 220  
Price paid for leasehold interests acquisition before sale of leasehold interests' right $ 1,861  
Number of Canadian leasehold locations selected for new stores   189
Number of leasehold sites under sale of right to acquire the leasehold interests   54
Proceeds from sale of right to acquire the leasehold interests   225
Price paid for leasehold interests' acquisition   1,636
Minimum
   
Leasehold acquisition    
Number of stores to be opened in Canada primarily during 2013 125  
Maximum
   
Leasehold acquisition    
Number of stores to be opened in Canada primarily during 2013 135  
Canadian
   
Assets acquired    
Capital lease assets   2,887
Intangible assets   23
Total assets   2,910
Liabilities    
Capital lease obligations   $ 1,274
Canadian | Minimum
   
Liabilities    
Amortization period of acquired intangible assets (in years)   3
Canadian | Maximum
   
Liabilities    
Amortization period of acquired intangible assets (in years)   13