Pension and Other Postretirement Plans - Net Periodic Benefit Cost (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Apr. 30, 2017 |
Apr. 30, 2016 |
Apr. 30, 2017 |
Apr. 30, 2016 |
|
Pension Plan, United States [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | $ 3,184 | $ 2,984 | $ 6,243 | $ 5,745 |
Interest cost | 3,243 | 4,032 | 6,454 | 7,966 |
Expected return on plan assets | (5,265) | (4,914) | (10,443) | (9,833) |
Amortization of prior service cost (credit) | 11 | 19 | 23 | 38 |
Amortization of net actuarial loss | 2,457 | 2,314 | 4,785 | 4,240 |
Total benefit cost | 3,630 | 4,435 | 7,062 | 8,156 |
Pension Plan, International [Member] | ||||
Defined Benefit Plan Disclosure [Line Items] | ||||
Service cost | 625 | 719 | 1,159 | 1,420 |
Interest cost | 419 | 609 | 768 | 1,222 |
Expected return on plan assets | (358) | (377) | (643) | (765) |
Amortization of prior service cost (credit) | (76) | (24) | (147) | (45) |
Amortization of net actuarial loss | 662 | 471 | 1,261 | 936 |
Total benefit cost | $ 1,272 | $ 1,398 | $ 2,398 | $ 2,768 |