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	Apr. 30, 2014	Oct. 31, 2013
Designated As Hedging Instrument | Other Current Assets
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments	$ 11,176	$ 12,417
Designated As Hedging Instrument | Accrued Liabilities
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments	3,385	5,103
Non-Designated Hedging Instrument | Other Current Assets
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments	561	20
Non-Designated Hedging Instrument | Accrued Liabilities
Financial Assets and Liabilities [Line Items]
Fair values of derivative instruments	$ 41	$ 135