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Pension and Other Postretirement Plans | 9 Months Ended
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Jul. 31, 2015
Compensation And Retirement Disclosure [Abstract] |
Pension and Other Postretirement Plans |
7. | Pension and other postretirement plans
The components of net periodic pension cost for the three and nine months ended July 31, 2015 and July 31, 2014 were:
|  | U.S. |  |  | International |
Three Months Ended |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Service cost |  | $ | 2,716 |  |  | $ | 2,018 |  |  | $ | 697 |  |  | $ | 691 |
Interest cost |  |  | 3,761 |  |  |  | 3,480 |  |  |  | 641 |  |  |  | 783 |
Expected return on plan assets |  |  | (4,579 | ) |  |  | (4,324 | ) |  |  | (405 | ) |  |  | (430 | )
Amortization of prior service cost (credit) |  |  | 30 |  |  |  | 59 |  |  |  | (22 | ) |  |  | (20 | )
Amortization of net actuarial loss |  |  | 2,443 |  |  |  | 1,985 |  |  |  | 492 |  |  |  | 384 |
Total benefit cost |  | $ | 4,371 |  |  | $ | 3,218 |  |  | $ | 1,403 |  |  | $ | 1,408 |
|  | U.S. |  |  | International |
Nine Months Ended |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Service cost |  | $ | 8,147 |  |  | $ | 6,053 |  |  | $ | 2,130 |  |  | $ | 2,102 |
Interest cost |  |  | 11,284 |  |  |  | 10,441 |  |  |  | 1,940 |  |  |  | 2,392 |
Expected return on plan assets |  |  | (13,737 | ) |  |  | (12,972 | ) |  |  | (1,217 | ) |  |  | (1,309 | )
Amortization of prior service cost (credit) |  |  | 90 |  |  |  | 177 |  |  |  | (68 | ) |  |  | (59 | )
Amortization of net actuarial loss |  |  | 7,329 |  |  |  | 5,955 |  |  |  | 1,801 |  |  |  | 1,170 |
Settlement loss |  |  | — |  |  |  | — |  |  |  | 1,275 |  |  |  | — |
Total benefit cost |  | $ | 13,113 |  |  | $ | 9,654 |  |  | $ | 5,861 |  |  | $ | 4,296 |
The components of other postretirement benefit cost for the three and nine months ended July 31, 2015 and July 31, 2014 were:
|  | U.S. |  |  | International |
Three Months Ended |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Service cost |  | $ | 225 |  |  | $ | 259 |  |  | $ | 7 |  |  | $ | 7 |
Interest cost |  |  | 744 |  |  |  | 766 |  |  |  | 9 |  |  |  | 9 |
Amortization of prior service credit |  |  | (110 | ) |  |  | (112 | ) |  |  | — |  |  |  | — |
Amortization of net actuarial (gain) loss |  |  | 289 |  |  |  | 358 |  |  |  | — |  |  |  | (3 | )
Total benefit cost |  | $ | 1,148 |  |  | $ | 1,271 |  |  | $ | 16 |  |  | $ | 13 |
|  | U.S. |  |  | International |
Nine Months Ended |  | 2015 |  |  | 2014 |  |  | 2015 |  |  | 2014 |
Service cost |  | $ | 675 |  |  | $ | 778 |  |  | $ | 22 |  |  | $ | 22 |
Interest cost |  |  | 2,232 |  |  |  | 2,297 |  |  |  | 27 |  |  |  | 28 |
Amortization of prior service credit |  |  | (329 | ) |  |  | (337 | ) |  |  | — |  |  |  | — |
Amortization of net actuarial (gain) loss |  |  | 866 |  |  |  | 1,076 |  |  |  | — |  |  |  | (10 | )
Total benefit cost |  | $ | 3,444 |  |  | $ | 3,814 |  |  | $ | 49 |  |  | $ | 40 |

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