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Derivatives and Hedging (Details)
item in Millions, bu in Millions, $ in Millions
12 Months Ended
Oct. 25, 2015
USD ($)
item
T
bu
Oct. 26, 2014
USD ($)
item
bu
Derivatives and hedging    
Maximum number of upcoming fiscal years to hedge grain or natural gas exposure 2 years  
Accumulated change, pretax, in accumulated gains and (losses) from derivative instruments designated and qualifying as the effective portion of cash flow hedges | $ $ 1.0 $ (14.8)
The Company expects to recognize the majority of hedging losses over this period 12 months  
Corn | Derivatives not designated as hedges    
Derivatives and hedging    
Futures contracts, volume (in million bushels) 2.6 2.9
Corn | Cash Flow Hedges    
Derivatives and hedging    
Futures contracts, volume (in million bushels) 20.1 18.3
Corn | Fair Value Hedges    
Derivatives and hedging    
Futures contracts, volume (in million bushels) 5.3 8.0
Lean hogs | Fair Value Hedges    
Derivatives and hedging    
Futures contracts, volume ( in centum weight) | item 0.4 0.7
Soybean meal | Derivatives not designated as hedges    
Derivatives and hedging    
Futures contracts, volume (in tons) | T 11,500