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Condensed Consolidated Statements of Comprehensive Income (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 93,928	$ 94,884	$ 234,418	$ 290,674
Components of other comprehensive income (loss):
Foreign currency translation adjustments	(7,172)	(26,361)	227	(7,063)
Amortization of prior service cost and net actuarial losses, net of tax	2,378	2,796	5,328	7,118
Total other comprehensive income (loss)	(4,794)	(23,565)	5,555	55
Total comprehensive income	$ 89,134	$ 71,319	$ 239,973	$ 290,729

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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