Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Apr. 30, 2017	Oct. 31, 2016
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Cumulative currency translation adjustments	$ (75,399)	$ (84,700)
Unrealized gain (loss) on derivative instruments, net of taxes	(3,815)	(19,896)
Unrealized gain (loss) on available-for-sale securities, net of taxes	(35)	19
Total accumulated other comprehensive income (loss)	$ (79,249)	$ (104,577)