Stock-Based Benefit Plans (Details 4) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Intrinsic value of options exercised and the fair value of options which became vested or modified
Intrinsic value of options exercised	$ 23,573	$ 25,327	$ 74,659
Fair value of options vested	$ 11,027	$ 12,336	$ 15,528

The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph c(2)

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration