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HOG PRODUCTION COST SAVINGS INITIATIVE (Details) (Hog Production Segment [Member], USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended 21 Months Ended
Oct. 30, 2011
Jul. 31, 2011
Oct. 30, 2011
Oct. 30, 2011
May 01, 2011
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve, Period Expense $ 1.2 $ 1.1      
Restructuring and Related Cost, Cost Incurred to Date       39.4  
Estimated Remaining Restructuring and Related Costs 3.7   3.7 3.7  
Cost Savings Activities [Domain]
          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve 0.4   0.4 0.4 2.4
Restructuring Reserve, Period Expense 1.2 1.0      
Restructuring Reserve, Settled with Cash     (4.2)    
Restructuring and Related Cost, Cost Incurred to Date       31.3  
Estimated Remaining Restructuring and Related Costs 3.7   3.7 3.7  
Contract Termination [Member]
          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve 0.4   0.4 0.4 0.8
Restructuring Reserve, Period Expense 0.3 0.1      
Restructuring Reserve, Settled with Cash     (0.8)    
Restructuring and Related Cost, Cost Incurred to Date       22.6  
Estimated Remaining Restructuring and Related Costs 3.0   3.0 3.0  
Other Costs Associated with Restructuring and Related Activities [Member]
          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve 0   0 0 1.6
Restructuring Reserve, Period Expense 0.9 0.9      
Restructuring Reserve, Settled with Cash     (3.4)    
Restructuring and Related Cost, Cost Incurred to Date       8.7  
Estimated Remaining Restructuring and Related Costs 0.7   0.7 0.7  
Other Cost Savings Charges [Domain]
          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve, Period Expense 0 0.1      
Restructuring and Related Cost, Cost Incurred to Date       8.1  
Estimated Remaining Restructuring and Related Costs 0   0 0  
Accelerated Depreciation Associated with Restructuring and Related Activities [Member]
          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve, Period Expense 0 0.1      
Restructuring and Related Cost, Cost Incurred to Date       5.6  
Estimated Remaining Restructuring and Related Costs 0   0 0  
Impairment Charges Associated with Restructuring and Related Activities [Member]
          
Restructuring Cost and Reserve [Line Items]          
Restructuring Reserve, Period Expense 0 0      
Restructuring and Related Cost, Cost Incurred to Date       2.5  
Estimated Remaining Restructuring and Related Costs $ 0   $ 0 $ 0