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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jan. 31, 2012	Jan. 31, 2011
Condensed Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Tax on unrealized gain (loss) on derivative instruments	$ (7,076)	$ 395

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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