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, 2020	Oct. 31, 2019	Oct. 31, 2018
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	$ 7,834	$ 4,733	$ (17,428)
Amount of gain (loss) reclassified from OCI (effective portion)	(73)	(14,637)	10,888
Foreign Exchange Contracts | Revenues
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	3,034	278	693
Amount of gain (loss) reclassified from OCI (effective portion)	530	1,436	1,103
Foreign Exchange Contracts | Operating expenses
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	4,800	4,455	(18,121)
Amount of gain (loss) reclassified from OCI (effective portion)	$ (603)	$ (16,073)	$ 9,785