Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Net income (loss)	$ 33,616	$ (473,363)
Change in unrealized gain (loss) on available-for-sale securities, net of tax	301	(261)
Change in cumulative translation adjustments	1,150	8,202
Other comprehensive income (loss)	(4,860)	13,392
Total comprehensive income (loss)	28,756	(459,971)
Change in unrealized gain on foreign currency forward contracts, net of tax
Change in unrealized gain (loss) on foreign currency forward contracts and forward starting interest rate swaps, net of tax	1,560	1,553
Change in unrealized gain (loss) on forward starting interest rate swap, net of tax
Change in unrealized gain (loss) on foreign currency forward contracts and forward starting interest rate swaps, net of tax	$ (7,871)	$ 3,898