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Acquisitions (Details) (USD $)
12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Apr. 27, 2011
Apr. 28, 2010
Apr. 29, 2009
Apr. 01, 2011
Coniexpress S.A. Industrias Alimenticias [Member]
Apr. 27, 2011
Coniexpress S.A. Industrias Alimenticias [Member]
Customer-related assets [Member]
Apr. 01, 2011
Coniexpress S.A. Industrias Alimenticias [Member]
Customer-related assets [Member]
Apr. 27, 2011
Foodstar Holding Pte [Member]
Nov. 02, 2010
Foodstar Holding Pte [Member]
Jan. 27, 2010
Arthur's Fresh Company [Member]
Oct. 29, 2008
Benedicta [Member]
Jan. 28, 2009
Golden Circle Limited [Member]
Jan. 28, 2009
La Bonne Cuisine [Member]
Apr. 29, 2009
Papillon [Member]
Apr. 27, 2011
Heinz UFE Ltd [Member]
Apr. 28, 2010
Heinz UFE Ltd [Member]
Apr. 28, 2010
Cairo Food Industries [Member]
Apr. 29, 2009
Cairo Food Industries [Member]
Acquisitions (Textuals) [Abstract]                                  
Cash paid for acquisition       $ 493,500,000       $ 165,400,000 $ 11,000,000 $ 116,000,000   $ 28,000,000 $ 6,000,000        
Acquisition including acquired cash       10,600,000       30,000,000                  
Acquisition including short-term investment       60,100,000                          
Purchase price for acquisition                     211,000,000            
Debt assumed in acquisition                     68,000,000            
Acquisition of remaining interest in subsidiary     49.00%                       21.00%   49.00%
Payments to acquire additional interest in subsidiaries 6,338,000 62,064,000 0                     6,300,000   62,100,000  
Noncontrolling Interest, Ownerhsip interest by Parent       80.00%                     79.00%   51.00%
Preliminary allocations of the purchase price resulted in goodwill       300,200,000       77,300,000                  
Estimate of the acquisition date fair value               44,500,000                  
Business acquisition purchase price allocation intangible assets total excluding goodwill       161,900,000       70,700,000                  
Assets related to trademarks and recipes which are not subject to amortization       142,000,000       42,400,000                  
Business acquisition purchase price allocation intangible assets which are subject to amortization           19,900,000   28,300,000                  
Business acquisition purchase price allocation intangible assets which are subject to amortization, useful life         15   31                    
Business acquisition, idemnification asset       26,300,000                          
Business acquisition, contingent liability       52,600,000                          
Pre-tax cost incurred related to acquisition       $ 11,300,000