DERIVATIVES AND HEDGING (Details 2) (USD $)	Jul. 31, 2011	Oct. 31, 2010
Derivatives fair value
Asset Derivatives, Other current assets	$ (15,868,000)	$ 56,532,000
Liability Derivatives, Accounts payable	(75,473,000)	6,390,000
Recognized right to reclaim cash collateral	25,900,000
Recognized obligation to return cash collateral	81,300,000	44,900,000
Derivatives designated as hedges | Commodity contracts
Derivatives fair value
Asset Derivatives, Other current assets	(17,860,000)	54,395,000
Liability Derivatives, Accounts payable	(74,801,000)	6,390,000
Derivatives not designated as hedges | Commodity contracts
Derivatives fair value
Asset Derivatives, Other current assets	1,992,000	2,137,000
Liability Derivatives, Accounts payable	(733,000)
Derivatives not designated as hedges | Foreign exchange contracts
Derivatives fair value
Liability Derivatives, Accounts payable	61,000
Commodity contracts
Derivatives fair value
Liability Derivatives, Accounts payable	75,500,000
Recognized right to reclaim cash collateral	25,900,000
Recognized obligation to return cash collateral	81,300,000
Commodity asset derivatives, net of the effects of master netting arrangements	10,000,000
Commodity liability derivatives, net of the effects of master netting arrangements	$ 5,800,000