Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Estimated Fair Value Of Company Long Term Debt) (Details)

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Fair Value Measurements (Estimated Fair Value Of Company Long Term Debt) (Details) - USD ($)
$ in Millions
Aug. 01, 2015
Aug. 02, 2014
Long-term debt $ 7,585 $ 7,375
Carrying Amount    
Long-term debt 7,153 6,713
Notional Amount    
Long-term debt $ 6,994 $ 6,544