Financial Assets and Liabilities - Unaudited Condensed Consolidated Statement of Operations Location and Amount of Gains and Losses on Derivative Instrument Fair Values for Designated Hedge Instruments, Net of Tax (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	$ 3,664	$ 12,399	$ 8,971	$ 3,965
Amount of gain (loss) reclassified from OCI (effective portion)	4,830	(709)	12,180	(1,563)
Foreign Exchange Contracts | Revenues
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	251	626	1,892	2,836
Amount of gain (loss) reclassified from OCI (effective portion)	1,563	466	2,597	648
Foreign Exchange Contracts | Operating expenses
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	3,413	11,773	7,079	1,129
Amount of gain (loss) reclassified from OCI (effective portion)	$ 3,267	$ (1,175)	$ 9,583	$ (2,211)