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Pension and Other Postretirement Plans - Net Periodic Benefit Cost (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2016
Apr. 30, 2015
Apr. 30, 2016
Apr. 30, 2015
Pension Plan, United States [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 2,984 $ 3,031 $ 5,745 $ 5,431
Interest cost 4,032 3,841 7,966 7,523
Expected return on plan assets (4,914) (4,578) (9,833) (9,158)
Amortization of prior service cost (credit) 19 30 38 60
Amortization of net actuarial loss 2,314 2,633 4,240 4,886
Total benefit cost 4,435 4,957 8,156 8,742
Pension Plan, International [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 719 692 1,420 1,433
Interest cost 609 627 1,222 1,299
Expected return on plan assets (377) (395) (765) (812)
Amortization of prior service cost (credit) (24) (22) (45) (46)
Amortization of net actuarial loss 471 485 936 1,309
Settlement loss       1,275
Total benefit cost $ 1,398 $ 1,387 $ 2,768 $ 4,458