Financial Assets And Liabilities (Fair Values Of Derivative Instrument Designated And Non-Designated As Hedging Instruments) (Details) (USD $) In Thousands, unless otherwise specified	Jan. 31, 2012	Oct. 31, 2011
Designated As Hedging Instrument [Member] | Other Current Assets [Member]
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments designated as hedging instruments	$ 1,202	$ 2,161
Designated As Hedging Instrument [Member] | Accrued Liabilities [Member]
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments designated as hedging instruments	16,433	16,827
Non-Designated Hedging Contracts [Member] | Other Current Assets [Member]
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments designated as hedging instruments	180
Non-Designated Hedging Contracts [Member] | Accrued Liabilities [Member]
Financial Assets And Liabilities [Line Items]
Fair values of derivative instruments designated as hedging instruments	$ 61	$ 29