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, 2016	Jan. 31, 2015
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	$ (12,759)	$ (12,829)
Amount of gain (loss) reclassified from OCI (effective portion)	(3,716)	(1,055)
Foreign Exchange Contracts | Revenues
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	(1,491)	2,966
Amount of gain (loss) reclassified from OCI (effective portion)	212	2,381
Foreign Exchange Contracts | Operating Expenses
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	(11,268)	(15,795)
Amount of gain (loss) reclassified from OCI (effective portion)	$ (3,928)	$ (3,436)