Financial Assets and Liabilities - Ineffective Portion and Portion Excluded from Effectiveness Testing of Derivative Hedge Gains (Losses) (Detail) - Foreign Exchange Contracts - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Financial Assets And Liabilities [Line Items]
Amount of gain (loss) recognized in income statement on derivatives (ineffective portion)	$ 311	$ 1,468	$ 878
Amount of gain (loss) recognized in income statement on derivatives (excluded from effectiveness testing)	$ 3,018	$ 6,058	$ 3,704