Interest and Other Income (Loss), Net (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Other Income and Expenses [Abstract]
Interest income		$ 14,410	$ 13,703	$ 6,579
Gain (loss) on non-hedge designated foreign currency forward contracts		3	6,791	(1,198)
Foreign currency exchange losses		(9,800)	(19,434)	(4,376)
Loss on fair value of debt conversion liability	$ (12,100)	0	(12,070)	0
Other		(737)	(1,019)	(92)
Interest and other income (loss), net		$ 3,876	$ (12,029)	$ 913