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Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details) (USD $)
In Billions, unless otherwise specified
Aug. 25, 2013
May 26, 2013
Fair Value Disclosures [Abstract]    
Carrying value of long-term debt $ 2.50 $ 2.50
Fair value of long-term debt $ 2.50 $ 2.70