DERIVATIVES AND HEDGING (Details) In Millions, unless otherwise specified	9 Months Ended
	Jul. 31, 2011 USD ($)	Oct. 31, 2010 USD ($)	Jul. 31, 2011 Corn B	Oct. 31, 2010 Corn B	Jul. 31, 2011 Soybean Meal USD ($) T	Oct. 31, 2010 Soybean Meal T	Jul. 31, 2011 Natural Gas MMBTU	Oct. 31, 2010 Natural Gas MMBTU	Jul. 31, 2011 Lean Hogs CWT	Oct. 31, 2010 Lean Hogs CWT	Jul. 31, 2011 Foreign Currency CAD
Derivatives and hedging
Futures contracts and swaps, Volume			15,400,000	21,100,000		190,400	900,000	1,600,000
Futures contracts, Volume			17,800,000	9,900,000					1,400,000	1,100,000
Futures and options contracts, Volume				1,500,000	9,100	1,200
Hedging gains, before tax, included in accumulated other comprehensive loss related to de-designated commodity derivatives previously designated as cash flow hedges					$ 8.2
Maximum number of upcoming fiscal years to hedge grain or natural gas exposure	2Y
Accumulated change, pretax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges	44.4	32.9
The Company expects to recognize the majority of hedging gains over this period	12M
Notional amount											4.5