Financial Assets and Liabilities - Income Statement Location and Amount of Gains and Losses on Derivative Instrument Fair Values for Designated Hedge Instruments, Net of Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	$ (17,428)	$ 20,928	$ (25,839)
Amount of gain (loss) reclassified from OCI (effective portion)	10,888	(3,564)	(20,710)
Foreign Exchange Contracts | Revenues
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	693	7,582	(14,580)
Amount of gain (loss) reclassified from OCI (effective portion)	1,103	(2,759)	(8,585)
Foreign Exchange Contracts | Operating expenses
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	(18,121)	13,346	(11,259)
Amount of gain (loss) reclassified from OCI (effective portion)	$ 9,785	$ (805)	$ (12,125)