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Taxes - Provision for Income Taxes and Effective Tax Rates (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Jul. 31, 2016 | Jul. 31, 2015 | Jul. 31, 2016 | Jul. 31, 2015
Income Tax Disclosure [Abstract] |  |  |  |
Income before income taxes | $ 85,231 | $ 65,193 | $ 246,796 | $ 225,692
Provision (benefit) for income taxes | $ 20,513 | $ 9,806 | $ 52,667 | $ 49,520
Effective tax rate | 24.10% | 15.00% | 21.30% | 21.90%

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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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