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Condensed Consolidated Statements of Comprehensive Income (UNAUDITED) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Apr. 30, 2016
Apr. 30, 2015
Statement Of Income And Comprehensive Income [Abstract]        
Net income $ 70,601 $ 49,214 $ 111,762 $ 92,099
Components of other comprehensive income (loss):        
Translation adjustments 20,315 (306) 8,733 (30,561)
Amortization of prior service cost and net actuarial losses, net of tax 1,858 2,123 3,489 4,287
Total other comprehensive income (loss) 22,173 1,817 12,222 (26,274)
Total comprehensive income $ 92,774 $ 51,031 $ 123,984 $ 65,825