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Canadian Leasehold Acquisition (Details) (Canadian Leasehold Acquisition, USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 28, 2012
site
Leasehold acquisition  
Arrangement to purchase leasehold interests, maximum number of leasehold sites 189
Price paid for leasehold interests acquisition before sale of leasehold interests' right $ 1,861
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
Canadian
 
Assets acquired  
Buildings and improvements 2,887
Finite-lived intangible assets 23
Liabilities  
Unsecured debt and other borrowings $ 1,274