Condensed Consolidated Statements of Comprehensive Income (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Jan. 31, 2016	Jan. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 41,161	$ 42,885
Components of other comprehensive income (loss):
Translation adjustments	(11,581)	(30,867)
Amortization of prior service cost and net actuarial losses, net of tax	1,631	2,164
Total other comprehensive income (loss)	(9,950)	(28,703)
Total comprehensive income	$ 31,211	$ 14,182