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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 6 Months Ended
Aug. 03, 2013
Jul. 28, 2012
Aug. 03, 2013
Jul. 28, 2012
Fair Value Measurements [Abstract]        
Beginning Balance $ 2 $ 4 $ 2 $ 4
Change in Estimated Fair Value Reported in Earnings 0 (1) 0 (1)
Ending Balance $ 2 $ 3 $ 2 $ 3