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Pension and Other Postretirement Plans | 3 Months Ended
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Jan. 31, 2017
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 months ended January 31, 2017 and January 31, 2016 were:
|  | U.S. |  |  | International |
Three Months Ended |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Service cost |  | $ | 3,058 |  |  | $ | 2,761 |  |  | $ | 534 |  |  | $ | 701 |
Interest cost |  |  | 3,211 |  |  |  | 3,934 |  |  |  | 348 |  |  |  | 613 |
Expected return on plan assets |  |  | (5,177 | ) |  |  | (4,919 | ) |  |  | (285 | ) |  |  | (387 | )
Amortization of prior service cost (credit) |  |  | 12 |  |  |  | 19 |  |  |  | (70 | ) |  |  | (22 | )
Amortization of net actuarial loss |  |  | 2,327 |  |  |  | 1,926 |  |  |  | 599 |  |  |  | 465 |
Total benefit cost |  | $ | 3,431 |  |  | $ | 3,721 |  |  | $ | 1,126 |  |  | $ | 1,370 |
The components of other postretirement benefit cost for the three months ended January 31, 2017 and January 31, 2016 were:
|  | U.S. |  |  | International |
Three Months Ended |  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Service cost |  | $ | 221 |  |  | $ | 248 |  |  | $ | 5 |  |  | $ | 4 |
Interest cost |  |  | 587 |  |  |  | 765 |  |  |  | 5 |  |  |  | 6 |
Amortization of prior service credit |  |  | (41 | ) |  |  | (66 | ) |  |  | — |  |  |  | — |
Amortization of net actuarial (gain) loss |  |  | 229 |  |  |  | 212 |  |  |  | (4 | ) |  |  | (6 | )
Total benefit cost |  | $ | 996 |  |  | $ | 1,159 |  |  | $ | 6 |  |  | $ | 4 |

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66047640&loc=d3e39622-114963 + Details
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