Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Nov. 01, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 1,184,119
Other comprehensive income (loss), net of tax	(384)	$ 962
Ending balance	1,245,024
Unamortized net gains on cash flow hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	100	200
Cumulative effect adjustment upon adoption of new accounting standard (ASU 2016-01)		0
Beginning Balance, as adjusted			$ 200
Other comprehensive income (loss) before reclassifications and tax	0	0
Tax impact	0	0
Reclassification adjustments, before tax	(33)	(33)
Tax impact	9	9
Other comprehensive income (loss), net of tax	(24)	(24)
Ending balance	76	176
Net unrealized gains on available-for-sale investments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0	3,714
Cumulative effect adjustment upon adoption of new accounting standard (ASU 2016-01)		(3,714)
Beginning Balance, as adjusted			0
Other comprehensive income (loss) before reclassifications and tax	0	0
Tax impact	0	0
Reclassification adjustments, before tax	0	0
Tax impact	0	0
Other comprehensive income (loss), net of tax	0	0
Ending balance	0	0
Foreign currency translation adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(58,417)	(57,095)
Cumulative effect adjustment upon adoption of new accounting standard (ASU 2016-01)		0
Beginning Balance, as adjusted			(57,095)
Other comprehensive income (loss) before reclassifications and tax	(360)	986
Tax impact	0	0
Reclassification adjustments, before tax	0	0
Tax impact	0	0
Other comprehensive income (loss), net of tax	(360)	986
Ending balance	(58,777)	(56,109)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(58,317)	(53,181)
Cumulative effect adjustment upon adoption of new accounting standard (ASU 2016-01)		(3,714)
Beginning Balance, as adjusted			$ (56,895)
Other comprehensive income (loss) before reclassifications and tax	(360)	986
Tax impact	0	0
Reclassification adjustments, before tax	(33)	(33)
Tax impact	9	9
Other comprehensive income (loss), net of tax	(384)	962
Ending balance	$ (58,701)	(55,933)
Accumulated Other Comprehensive Loss [Member] | Accounting Standards Update 2016-01 [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cumulative effect adjustment upon adoption of new accounting standard (ASU 2016-01)		$ (3,714)