Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 377,375	$ 295,802	$ 271,843
Components of other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	(28,619)	22,697	(8,693)
Pension and postretirement benefit plans:
Prior service (cost) credit arising during the year	(45)		1,831
Net actuarial gain (loss) arising during the year	(7,783)	2,641	(22,482)
Amortization of prior service (cost) credit	(322)	(210)	92
Amortization of actuarial loss	10,536	7,972	6,724
Settlement loss recognized	200	712	111
Curtailment (gain) loss recognized			(1,144)
Total pension and postretirement benefit plans	2,586	11,115	(14,868)
Total other comprehensive income (loss)	(26,033)	33,812	(23,561)
Reclassification due to adoption of new accounting standard (Note 2)	(18,846)
Total comprehensive income	$ 332,496	$ 329,614	$ 248,282