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DERIVATIVE FINANCIAL INSTRUMENTS Notional Amounts (Details) (USD $)
 3 Months Ended
Jul. 31, 2011
pounds
Cash Flow Hedging [Member] | Lean Hogs, in Pounds [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Mass 469,720,000
Maximum Notional Volumes, Mass 960,360,000
Cash Flow Hedging [Member] | Corn, in Bushels [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Other Units 26,705,000
Maximum Notional Volumes, Other Units 39,350,000
Cash Flow Hedging [Member] | Interest Rate Swap [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Monetary 200,000,000
Maximum Notional Volumes, Monetary 200,000,000
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Monetary 23,496,793 [1]
Maximum Notional Volumes, Monetary 37,795,270 [1]
Cash Flow Hedging [Member] | Soybean Meal, in Tons [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Mass 223,700
Maximum Notional Volumes, Mass 282,700
Fair Value Hedging [Member] | Lean Hogs, in Pounds [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Mass 0
Maximum Notional Volumes, Mass 221,680,000
Fair Value Hedging [Member] | Corn, in Bushels [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Other Units 3,490,000
Maximum Notional Volumes, Other Units 5,220,000
Not Designated as Hedging Instrument [Member] | Lean Hogs, in Pounds [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Mass 31,320,000
Maximum Notional Volumes, Mass 334,320,000
Not Designated as Hedging Instrument [Member] | Corn, in Bushels [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Other Units 8,485,000
Maximum Notional Volumes, Other Units 17,825,000
Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Monetary 43,724,684 [1]
Maximum Notional Volumes, Monetary 99,628,898 [1]
Not Designated as Hedging Instrument [Member] | Soybean Meal, in Tons [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Mass 1,400
Maximum Notional Volumes, Mass 133,500
Not Designated as Hedging Instrument [Member] | Soybeans, in Bushels [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Other Units 250,000
Maximum Notional Volumes, Other Units 290,000
Not Designated as Hedging Instrument [Member] | Wheat, in Bushels [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Other Units 0
Maximum Notional Volumes, Other Units 1,620,000
Not Designated as Hedging Instrument [Member] | Natural Gas, in Million BTU [Member]
  
Derivative [Line Items]  
Minimum Notional Volumes, Other Units 1,830,000
Maximum Notional Volumes, Other Units 2,400,000
[1] Amounts represent the U.S. dollar equivalent of various foreign currency contracts.