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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2012	Jul. 31, 2011
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Tax on unrealized gain (loss) on derivative instruments	$ 3,080	$ 3,283	$ 9,388	$ (7,616)

Tax effect on the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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