Business Segment and Geographic Information (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
May 29, 2011
Feb. 27, 2011
Nov. 28, 2010
Aug. 29, 2010
May 30, 2010
Feb. 28, 2010
Nov. 29, 2009
Aug. 30, 2009
May 29, 2011
May 30, 2010
May 31, 2009
May 25, 2008
Segment Reporting By Segment Abstract                        
Net sales $ 3,634.3 $ 3,646.2 $ 4,066.6 $ 3,533.1 $ 3,529.2 $ 3,589.3 $ 4,034.7 $ 3,482.4 $ 14,880.2 $ 14,635.6 $ 14,555.8  
Segment Reporting Segment Operating Profit Loss                 2,945.6 2,840.5 2,624.2  
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated Amount                 184.1 203.0 342.5  
Divestiture (gain)                 17.4 0 84.9  
Restructuring, impairment, and other exit costs                 4.4 31.4 41.6  
Operating profit                 2,774.5 2,606.1 2,325.0  
Total 3,634.3 3,646.2 4,066.6 3,533.1 3,529.2 3,589.3 4,034.7 3,482.4 14,880.2 14,635.6 14,555.8  
Entity Wide Information About Geographic Areas [Abstract]                        
United States                 11,987.8 11,934.4 11,942.1  
Non-United States                 2,892.4 2,701.2 2,613.7  
United States 2,752.1       2,619.7       2,752.1 2,619.7    
Non-United States 593.8       508.0       593.8 508.0    
Total 3,345.9       3,127.7       3,345.9 3,127.7    
United States 123.7       66.1       123.7 66.1    
Non-United States 495.9       607.1       495.9 607.1    
Total 619.6       673.2       619.6 673.2 749.8 661.0
US Retail Segment [Member]
                        
Segment Reporting By Segment Abstract                        
Net sales                 10,163.9 10,209.8 9,973.6  
Segment Reporting Segment Operating Profit Loss                 2,347.9 2,385.2 2,206.6  
Total                 10,163.9 10,209.8 9,973.6  
Segment Percent Of Consolidated Net Sales                 19.30%      
International Segment [Member]
                        
Segment Reporting By Segment Abstract                        
Net sales                 2,875.5 2,684.9 2,571.8  
Segment Reporting Segment Operating Profit Loss                 291.4 192.1 239.2  
Total                 2,875.5 2,684.9 2,571.8  
Segment Percent Of Consolidated Net Sales                 68.30%      
Bakeries And Foodservice Segment [Member]
                        
Segment Reporting By Segment Abstract                        
Net sales                 1,840.8 1,740.9 2,010.4  
Segment Reporting Segment Operating Profit Loss                 306.3 263.2 178.4  
Total                 $ 1,840.8 $ 1,740.9 $ 2,010.4  
Segment Percent Of Consolidated Net Sales                 12.40%     Â