Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2017	Oct. 31, 2016	Oct. 31, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 136,563	$ 266,826	$ 225,934
Other comprehensive income (loss):
Change in foreign currency translation adjustment	14,293	5,808	(39,567)
Change in unrealized gains (losses) on investments, net of tax of $0, for fiscal years 2017, 2016 and 2015	(19)	47	(28)
Cash flow hedges:
Deferred gains (losses), net of tax of $(4,380), $4,372, and $7,107 for fiscal years 2017, 2016 and 2015, respectively	20,760	(25,767)	(18,614)
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $(168), $(6,253), and $(6,212) for fiscal years 2017, 2016 and 2015, respectively	3,564	20,710	14,923
Other comprehensive income (loss), net of tax effects	38,598	798	(43,286)
Comprehensive income	$ 175,161	$ 267,624	$ 182,648