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Taxes - Provision for Income Taxes and Effective Tax Rates (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
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Jul. 31, 2014 | Jul. 31, 2013 | Jul. 31, 2014 | Jul. 31, 2013
Income Tax Disclosure [Abstract] |  |  |  |
Income before income taxes | $ 70,771 | $ 58,172 | $ 210,014 | $ 216,609
Provision (benefit) for income tax | $ 5,115 | $ 5,875 | $ 13,345 | $ 25,699
Effective tax rate | 7.20% | 10.10% | 6.40% | 11.90%

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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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