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Share-Based Payments (Details 3) (USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
May 27, 2012
May 29, 2011
May 30, 2010
Summary of the activity for performance share awards      
Granted, Shares Units 1.80 1.60 1.10
Performance Shares [Member]
     
Summary of the activity for performance share awards      
Nonvested share units at May 29, 2011, Share Units 1.37    
Granted, Shares Units 0.51    
Adjustments for performance results attained, Shares 0.16    
Vested/issued, Share Units (0.60)    
Forfeited, Share Units (0.17)    
Nonvested share units at May 27, 2012, Share Units 1.27    
Nonvested share units at May 29, 2011, Weighted Average Grant-date Fair Value 20.42    
Granted, Weighted Average Grant-Date Fair Value 26.11    
Adjustments for performance results attained, Weighted Average Grant-Date Fair Value 20.48    
Vested/issued, Weighted Average Grant-Date Fair Value 20.48    
Forfeited, Weighted Average Grant-Date Fair Value 22.24    
Nonvested share units at May 27, 2012, Weighted Average Grant-Date Fair Value 22.44