Interest and Other Income (Loss), Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Other Income and Expenses [Abstract]
Interest income	$ 13,703	$ 6,579	$ 4,058
Gain (loss) on non-hedge designated foreign currency forward contracts	6,791	(1,198)	(23,355)
Foreign currency exchange gains (losses)	(19,434)	(4,376)	5,870
Loss on fair value of debt conversion liability	(12,070)	0	0
Other	(1,019)	(92)	858
Interest and other income (loss), net	$ (12,029)	$ 913	$ (12,569)