Financial Assets and Liabilities - Fair Values of Derivative Instrument Designated and Non-Designated as Hedging Instruments in Unaudited Condensed Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	Jul. 31, 2017	Oct. 31, 2016
Designated As Hedging Instrument | Other current assets
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments, assets	$ 17,017	$ 4,625
Designated As Hedging Instrument | Accrued liabilities
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments, liabilities	1,741	19,910
Non-Designated Hedging Instrument | Other current assets
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments, assets	306	27
Non-Designated Hedging Instrument | Accrued liabilities
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments, liabilities	$ 118	$ 101