Unaudited Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2016	Apr. 30, 2015	Apr. 30, 2016	Apr. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 69,376	$ 55,596	$ 129,411	$ 120,785
Other comprehensive income (loss):
Change in foreign currency translation adjustment	17,388	3,677	2,933	(19,778)
Changes in unrealized gains (losses) on available-for-sale securities, net of tax of $0 for periods presented	106	12	59	30
Cash flow hedges:
Deferred gains (losses), net of tax of $(2,367) and $1,285, for the three and six months ended April 30, 2016, respectively, and of $668 and $5,513 for each of the same periods in fiscal 2015, respectively	3,041	(1,345)	(9,593)	(14,120)
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $(1,790) and $(3,171), for the three and six months ended April 30, 2016, respectively, and of $(3,018) and $(3,408), for each of the same periods in fiscal 2015, respectively	5,197	6,371	8,913	7,427
Other comprehensive income (loss), net of tax effects	25,732	8,715	2,312	(26,441)
Comprehensive income	$ 95,108	$ 64,311	$ 131,723	$ 94,344