Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012
Reconciliation of change in gross unrecognized tax benefits
Balance, beginning of period	$ 78,105us-gaap_UnrecognizedTaxBenefits	$ 80,991us-gaap_UnrecognizedTaxBenefits	$ 104,669us-gaap_UnrecognizedTaxBenefits
Increase in benefit as a result of tax positions taken in prior years	10,314	5,699	5,000
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	442		5,489
Decrease in benefit as a result of completion of tax audits	(1,222)		(1,782)
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(29,321)	(8,585)	(32,385)
Balance, end of period	$ 58,318us-gaap_UnrecognizedTaxBenefits	$ 78,105us-gaap_UnrecognizedTaxBenefits	$ 80,991us-gaap_UnrecognizedTaxBenefits

Decrease in benefit as result of completion of tax audits.

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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-Section 50

-Paragraph 15A

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

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