Unaudited Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2020	Apr. 30, 2019	Apr. 30, 2020	Apr. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 109,920	$ 118,210	$ 213,981	$ 271,724
Other comprehensive income (loss):
Change in foreign currency translation adjustment	(10,965)	(3,327)	(4,003)	2,056
Cash flow hedges:
Deferred gains (losses), net of tax of $2,763 and $2,346, for the three and six months ended April 30, 2020, respectively, and of $(123) and $(1,714) for each of the same periods in fiscal 2019, respectively.	(10,085)	447	(8,434)	5,914
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $(32) and $(128), for the three and six months ended April 30, 2020, respectively, and of $(1,050) and $(2,286) for each of the same periods in fiscal 2019, respectively.	331	4,012	854	8,487
Other comprehensive income (loss), net of tax effects	(20,719)	1,132	(11,583)	16,457
Comprehensive income	$ 89,201	$ 119,342	$ 202,398	$ 288,181