Unaudited Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ (3,691)	$ 86,588
Other comprehensive income (loss):
Change in foreign currency translation adjustment	21,080	(4,661)
Changes in unrealized gains (losses) on available-for-sale securities, net of tax of $0 for periods presented	0	(63)
Cash flow hedges:
Deferred gains (losses), net of tax of $(3,419) and $(681), respectively	13,013	6,453
Reclassification adjustment on deferred (gains) losses included in net income, net of tax of $1,325 and $(850), respectively	(5,306)	3,854
Other comprehensive income (loss), net of tax effects	28,787	5,583
Comprehensive income	$ 25,096	$ 92,171