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Share-Based Payments (Details 2) (USD $)
In Millions, except Per Share data
12 Months Ended
May 29, 2011
May 30, 2010
May 31, 2009
Changes in nonvested share units      
Granted, Share Units 1.60 1.10 1.00
Weighted Average Grant-Date Fair Value $ 3.31 $ 2.73 $ 2.84
Share Units [Member]
     
Changes in nonvested share units      
Nonvested share units at May 30, 2010, Share Units 2.58    
Nonvested share units at May 30, 2010, Weighted Average Grant-Date Fair Value $ 20.81    
Granted, Share Units 1.57    
Weighted Average Grant-Date Fair Value $ 21.55    
Vested/Issued, Share Units (0.59)    
Vested/Issued, Weighted Average Grant-Date Fair Value $ 20.99    
Forfeited, Share Units (0.31)    
Forfeited, Weighted Average Grant-Date Fair Value $ 19.25    
Nonvested share units at May 29, 2011, Share Units 3.25    
Nonvested share units at May 29, 2011, Weighted Average Grant-Date Fair Value $ 19.56