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Fair Value Measurements (Fair Value, Lease Guarantees On Recurring Basis, Unobservable Input) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
May 04, 2013
Apr. 28, 2012
Fair Value Measurements [Abstract]    
Beginning Balance $ 2 $ 4
Change in Estimated Fair Value Reported in Earnings 0 0
Ending Balance $ 2 $ 4