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DERIVATIVE FINANCIAL INSTRUMENTS Fair Value (Details) (USD $)
In Millions, unless otherwise specified
Jul. 29, 2012
Apr. 29, 2012
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset $ 132.9 $ 79.0
Derivative Liability, Fair Value, Gross Liability 64.5 30.7
Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 107.1 60.1
Derivative Liability, Fair Value, Gross Liability 21.9 9.6
Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 25.8 18.9
Derivative Liability, Fair Value, Gross Liability 42.6 21.1
Grain Contracts [Member] | Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 102.6 35.3
Derivative Liability, Fair Value, Gross Liability 15.3 9.6
Grain Contracts [Member] | Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 21.1 9.1
Derivative Liability, Fair Value, Gross Liability 34.2 1.0
Livestock Contracts [Member] | Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 3.6 22.9
Derivative Liability, Fair Value, Gross Liability 5.9 0
Livestock Contracts [Member] | Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 2.7 7.4
Derivative Liability, Fair Value, Gross Liability 2.0 7.2
Energy Contracts [Member] | Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 1.7 0
Derivative Liability, Fair Value, Gross Liability 6.0 12.2
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 0.9 1.9
Derivative Liability, Fair Value, Gross Liability 0.7 0
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
   
Derivatives, Fair Value [Line Items]    
Derivative Asset, Fair Value, Gross Asset 0.3 2.4
Derivative Liability, Fair Value, Gross Liability $ 0.4 $ 0.7