Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	$ (47,474)
Other comprehensive income, net of tax	12,780	$ 6,128
Ending balance,	(34,694)
Unamortized net gains (losses) on cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	301	687
Other comprehensive income (loss) before reclassifications and tax	0	0
Tax impact	0	0
Reclassification adjustments, before tax	(33)	6
Tax impact	8	(2)
Other comprehensive income, net of tax	(25)	4
Ending balance,	276	691
Net unrealized holding gains (losses) on available-for-sale investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	4,128	2,943
Other comprehensive income (loss) before reclassifications and tax	962	535
Tax impact	(242)	(208)
Reclassification adjustments, before tax	0	0
Tax impact	0	0
Other comprehensive income, net of tax	720	327
Ending balance,	4,848	3,270
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	(51,903)	(61,213)
Other comprehensive income (loss) before reclassifications and tax	12,085	5,797
Tax impact	0	0
Reclassification adjustments, before tax	0	0
Tax impact	0	0
Other comprehensive income, net of tax	12,085	5,797
Ending balance,	(39,818)	(55,416)
Total [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance,	(47,474)	(57,583)
Other comprehensive income (loss) before reclassifications and tax	13,047	6,332
Tax impact	(242)	(208)
Reclassification adjustments, before tax	(33)	6
Tax impact	8	(2)
Other comprehensive income, net of tax	12,780	6,128
Ending balance,	$ (34,694)	$ (51,455)