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
	Jan. 31, 2017	Jan. 31, 2016
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	$ 6,545	$ (12,759)
Amount of gain (loss) reclassified from OCI (effective portion)	(3,854)	(3,716)
Foreign Exchange Contracts | Revenues
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	8,604	(1,491)
Amount of gain (loss) reclassified from OCI (effective portion)	(1,753)	212
Foreign Exchange Contracts | Operating expenses
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	(2,059)	(11,268)
Amount of gain (loss) reclassified from OCI (effective portion)	$ (2,101)	$ (3,928)