Financial Assets And Liabilities (Fair Values Of Derivative Instruments Designated And Non-Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2011	Oct. 31, 2010
Designated As Hedging Instrument [Member] | Other Current Assets [Member]
Financial Assets And Liabilities [Line Items]
Fair values of derivative assets	$ 2,161	$ 5,680
Designated As Hedging Instrument [Member] | Other Current Liabilities [Member]
Financial Assets And Liabilities [Line Items]
Fair values of derivative liabilities	16,827	11,626
Non-Designated Hedging Contracts [Member] | Other Current Liabilities [Member]
Financial Assets And Liabilities [Line Items]
Fair values of derivative liabilities	$ 29	$ 1,554