Consolidated Statements Of Stockholders' Equity And Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Consolidated Statements Of Stockholders' Equity And Comprehensive Income [Abstract]
Unrealized gain (loss) on investments, tax	$ 226	$ 1,522	$ (1,583)
Deferred gains (losses) on cash flow hedges, tax	3,049	1,520	(3,952)
Reclassification adjustment on deferred (gain) loss of cash flow hedges, tax	$ (422)	$ 2,923	$ (1,560)

Tax effect of the gross appreciation or the gross loss, net of reclassification adjustment, in the value of the total unsold available-for-sale securities at the end of an accounting period.

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Tax effect on reclassification adjustment for accumulated gains and losses from derivative instrument designated and qualifying as the effective portion of cash flow hedges included in accumulated comprehensive income that was realized in net income during the period.

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- Definition

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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