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, unless otherwise specified	3 Months Ended
	Jan. 31, 2015	Jan. 31, 2014
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	$ (12,829)	$ (594)
Amount of gain (loss) reclassified from OCI (effective portion)	(1,055)	3,306
Foreign Exchange Contracts | Revenue
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	2,966	3,188
Amount of gain (loss) reclassified from OCI (effective portion)	2,381	2,756
Foreign Exchange Contracts | Operating Expenses
Financial Assets and Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	(15,795)	(3,782)
Amount of gain (loss) reclassified from OCI (effective portion)	$ (3,436)	$ 550