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Condensed Consolidated Statements of Comprehensive Income (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 104,555	$ 49,988
Components of other comprehensive income (loss):
Translation adjustments	38,582	(5,751)
Amortization of prior service cost and net actuarial losses, net of tax	1,509	1,691
Total other comprehensive income (loss)	40,091	(4,060)
Total comprehensive income	$ 144,646	$ 45,928

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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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