Financial Assets And Liabilities (Fair Values Of Derivative Instrument Designated And Non-Designated As Hedging Instruments In Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Apr. 30, 2012	Oct. 31, 2011
Designated As Hedging Instrument [Member] | Other Current Assets [Member]
Financial Assets And Liabilities [Line Items]
Fair Values of derivative instruments	$ 3,067	$ 2,161
Designated As Hedging Instrument [Member] | Other Current Liabilities [Member]
Financial Assets And Liabilities [Line Items]
Fair Values of derivative instruments	10,008	16,827
Non-Designated Hedging Instrument [Member] | Other Current Assets [Member]
Financial Assets And Liabilities [Line Items]
Fair Values of derivative instruments	871
Non-Designated Hedging Instrument [Member] | Other Current Liabilities [Member]
Financial Assets And Liabilities [Line Items]
Fair Values of derivative instruments	$ 79	$ 29