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Fair Value Measurements (Carrying Value And Fair Value Of Long-Term Debt) (Details) (USD $)
May 25, 2014
May 26, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying value of long-term debt $ 2,496,400,000 $ 2,496,200,000
Carrying Value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying value of long-term debt 2,500,000,000 2,500,000,000
Fair Value
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Fair value of long-term debt $ 2,630,000,000 $ 2,700,000,000