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Financial Assets and Liabilities - Fair Values of Derivative Instrument Designated and Non-Designated as Hedging Instruments in Unaudited Condensed Consolidated Balance Sheet (Detail) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2014
Oct. 31, 2013
Designated As Hedging Instrument | Other Current Assets
   
Financial Assets and Liabilities [Line Items]    
Fair values of derivative instruments $ 6,193 $ 12,417
Designated As Hedging Instrument | Accrued Liabilities
   
Financial Assets and Liabilities [Line Items]    
Fair values of derivative instruments 3,247 5,103
Non-Designated Hedging Instrument | Other Current Assets
   
Financial Assets and Liabilities [Line Items]    
Fair values of derivative instruments 159 20
Non-Designated Hedging Instrument | Accrued Liabilities
   
Financial Assets and Liabilities [Line Items]    
Fair values of derivative instruments $ 96 $ 135