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Properties and Leases (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Jan. 28, 2012
Jan. 29, 2011
Jan. 30, 2010
Capital lease obligations included in short-term debt $ 4    
Capital lease obligations included in long-term debt 35    
Minimum sublease rentals on operating leases 54    
Deferred rent amortization 8 7 7
Property Lease Guarantee [Member]
     
Potential lease extension date of divested business 2070    
Future minimum lease payments $ 369