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Fair Value Measurements (Details Textual) (USD $)
Aug. 28, 2011
May 29, 2011
Fair value measurements (Textuals) [Abstract]    
Carrying amount of long-term debt $ 3,200,000,000 $ 3,200,000,000
Long-term debt at fair value $ 3,700,000,000 $ 3,600,000,000