Goodwill and Other Intangibles (Details) (USD $)
In Millions
 12 Months Ended
May 29, 2011
May 30, 2010
May 31, 2009
Brands $ 3,771.7 $ 3,679.6  
Patents, trademarks, and other finite-lived intangibles 69.2 54.4  
Less accumulated amortization (27.6) (19.0)  
Finite Lived Intangible Assets Net 41.6 35.4  
Total 10,564.1 10,307.8  
Goodwill [Line Items]      
Goodwill 6,750.8 6,592.8 6,663.0
Balance as of May 25, 2008 6,592.8 6,663.0 6,786.1
Acquisitions 71.5   41.6
Divestitures (2.4)   (41.6)
Deferred tax adjustment related to divestitures     (63.8)
Deferred tax adjustment resulting from change in acquisition-related income tax liabilities     19.1
Other activity, primarily foreign currency translation 88.9 70.2 78.4
Balance as of May 31, 2009 6,750.8 6,592.8 6,663.0
Balance as of May 30, 2010 6,750.8 6,592.8 6,663.0
Balance as of May 29, 2011 6,750.8 6,592.8 6,663.0
Indefinite Lived Intangible Assets By Segment [Line Items]      
Other intangible assets 3,813.3 3,715.0 3,747.0
Balance as of May 25, 2008 3,715.0 3,747.0 3,777.2
Acquisitions 45.3   19.4
Other activity, primarily foreign currency translation (53.0) 32.0 49.6
Balance as of May 31, 2009 3,813.3 3,715.0 3,747.0
Balance as of May 30, 2010 3,813.3 3,715.0 3,747.0
Balance as of May 29, 2011 3,813.3 3,715.0 3,747.0
US Retail Segment [Member]
      
Goodwill [Line Items]      
Goodwill 5,142.9 5,098.3 5,098.3
Balance as of May 25, 2008 5,098.3 5,098.3 5,107.0
Acquisitions 44.6   41.6
Divestitures 0   (17.8)
Deferred tax adjustment related to divestitures     (46.5)
Deferred tax adjustment resulting from change in acquisition-related income tax liabilities     14.0
Other activity, primarily foreign currency translation 0 0 0
Balance as of May 31, 2009 5,142.9 5,098.3 5,098.3
Balance as of May 30, 2010 5,142.9 5,098.3 5,098.3
Balance as of May 29, 2011 5,142.9 5,098.3 5,098.3
US Retail Segment [Member]
      
Indefinite Lived Intangible Assets By Segment [Line Items]      
Other intangible assets 3,242.5 3,206.6 3,208.9
Balance as of May 25, 2008 3,206.6 3,208.9 3,175.2
Acquisitions 39.3   19.4
Other activity, primarily foreign currency translation 3.4 2.3 (14.3)
Balance as of May 31, 2009 3,242.5 3,206.6 3,208.9
Balance as of May 30, 2010 3,242.5 3,206.6 3,208.9
Balance as of May 29, 2011 3,242.5 3,206.6 3,208.9
International Segment [Member]
      
Goodwill [Line Items]      
Goodwill 162.6 122.0 123.3
Balance as of May 25, 2008 122.0 123.3 146.4
Acquisitions 26.9   0
Divestitures (0.5)   (0.1)
Deferred tax adjustment related to divestitures     (4.5)
Deferred tax adjustment resulting from change in acquisition-related income tax liabilities     1.3
Other activity, primarily foreign currency translation 14.2 1.3 19.8
Balance as of May 31, 2009 162.6 122.0 123.3
Balance as of May 30, 2010 162.6 122.0 123.3
Balance as of May 29, 2011 162.6 122.0 123.3
International Segment [Member]
      
Indefinite Lived Intangible Assets By Segment [Line Items]      
Other intangible assets 497.9 445.3 462.6
Balance as of May 25, 2008 445.3 462.6 518.8
Acquisitions 6.0   0
Other activity, primarily foreign currency translation (46.6) 17.3 56.2
Balance as of May 31, 2009 497.9 445.3 462.6
Balance as of May 30, 2010 497.9 445.3 462.6
Balance as of May 29, 2011 497.9 445.3 462.6
Joint Ventures [Member]
      
Goodwill [Line Items]      
Goodwill 524.2 449.5 518.4
Balance as of May 25, 2008 449.5 518.4 577.0
Acquisitions 0   0
Divestitures 0   0
Deferred tax adjustment related to divestitures     0
Deferred tax adjustment resulting from change in acquisition-related income tax liabilities     0
Other activity, primarily foreign currency translation 74.7 68.9 58.6
Balance as of May 31, 2009 524.2 449.5 518.4
Balance as of May 30, 2010 524.2 449.5 518.4
Balance as of May 29, 2011 524.2 449.5 518.4
Joint Ventures [Member]
      
Indefinite Lived Intangible Assets By Segment [Line Items]      
Other intangible assets 72.9 63.1 75.5
Balance as of May 25, 2008 63.1 75.5 83.2
Acquisitions 0   0
Other activity, primarily foreign currency translation (9.8) 12.4 7.7
Balance as of May 31, 2009 72.9 63.1 75.5
Balance as of May 30, 2010 72.9 63.1 75.5
Balance as of May 29, 2011 72.9 63.1 75.5
Bakeries and Foodservice [Member]
      
Goodwill [Line Items]      
Goodwill 921.1 923.0 923.0
Balance as of May 25, 2008 923.0 923.0 955.7
Acquisitions 0   0
Divestitures (1.9)   (23.7)
Deferred tax adjustment related to divestitures     (12.8)
Deferred tax adjustment resulting from change in acquisition-related income tax liabilities     3.8
Other activity, primarily foreign currency translation 0 0 0
Balance as of May 31, 2009 921.1 923.0 923.0
Balance as of May 30, 2010 921.1 923.0 923.0
Balance as of May 29, 2011 $ 921.1 $ 923.0 $ 923.0