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Financial Assets and Liabilities - Effects on Changes in Fair Values of Non-Designated Forward Contracts (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Apr. 30, 2017 | Apr. 30, 2016 | Apr. 30, 2017 | Apr. 30, 2016
Financial Assets And Liabilities [Abstract] |  |  |  |
Gain (loss) recorded in other income (expense), net | $ 1,263 | $ 1,914 | $ 1,322 | $ (1,849)

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- Definition Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 + Details
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