Financial Assets And Liabilities (Gains And Losses On Derivative Instruments Recognized In Statement Of Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Oct. 31, 2011	Oct. 31, 2010
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	$ (8,872)	$ (11,708)
Amount of gain (loss) reclassified from OCI (effective portion)	(1,989)	3,443
Revenue [Member] | Foreign Exchange Contracts [Member]
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	(5,647)	(9,747)
Amount of gain (loss) reclassified from OCI (effective portion)	(8,561)	1,689
Operating Expenses [Member] | Foreign Exchange Contracts [Member]
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in OCI on derivatives (effective portion)	(3,225)	(1,961)
Amount of gain (loss) reclassified from OCI (effective portion)	$ 6,572	$ 1,754