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Condensed Consolidated Statements of Comprehensive Income (UNAUDITED) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2016
Statement Of Income And Comprehensive Income [Abstract]        
Net income $ 64,523 $ 70,601 $ 114,511 $ 111,762
Components of other comprehensive income:        
Translation adjustments 5,849 20,315 99 8,733
Amortization of prior service cost and net actuarial losses, net of tax 1,708 1,858 3,398 3,489
Total other comprehensive income 7,557 22,173 3,497 12,222
Total comprehensive income $ 72,080 $ 92,774 $ 118,008 $ 123,984