Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	9 Months Ended
	Jul. 31, 2018	Jul. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income - beginning balance	$ 2,136,342
Accumulated other comprehensive income - ending balance	1,778,954
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income - beginning balance	(11,017)	$ (24,329)
Other comprehensive income (loss) before reclassifications	3,101	17,092
Amounts reclassified from AOCI	(789)	1,742
Accumulated other comprehensive income - ending balance	(8,705)	(5,495)
Unrealized Loss on Available-for-sale Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income - beginning balance	(451)	139
Other comprehensive income (loss) before reclassifications	(59)	(533)
Amounts reclassified from AOCI	0	0
Accumulated other comprehensive income - ending balance	(510)	(394)
Unrealized Gain (Loss) Derivatives | Foreign Currency Forward Contracts
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income - beginning balance	(1,386)	(1,091)
Other comprehensive income (loss) before reclassifications	(9)	896
Amounts reclassified from AOCI	(1,058)	2,010
Accumulated other comprehensive income - ending balance	(2,453)	1,815
Unrealized Gain (Loss) Derivatives | Forward Starting Interest Rate Swap
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income - beginning balance	218	(5,967)
Other comprehensive income (loss) before reclassifications	5,330	4,838
Amounts reclassified from AOCI	269	(268)
Accumulated other comprehensive income - ending balance	5,817	(1,397)
Cumulative Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated other comprehensive income - beginning balance	(9,398)	(17,410)
Other comprehensive income (loss) before reclassifications	(2,161)	11,891
Amounts reclassified from AOCI	0	0
Accumulated other comprehensive income - ending balance	$ (11,559)	$ (5,519)