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Financial Assets and Liabilities - Notional Amounts of Derivative Instruments (Detail) - USD ($) $ in Thousands | Jul. 31, 2019 | Oct. 31, 2018
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Financial Assets And Liabilities [Abstract] |  |
Total gross notional amount | $ 779,127 | $ 1,135,549
Net fair value | $ (565) | $ (18,120)

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Financial Assets and Liabilities [Abstract] + References No definition available. + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 + Details
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