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Pension Plans and Other Postretirement Benefits Components of Pension and Postretirement Benefits Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Actuarial loss (gain) | $ 26,700 | $ (30,100) |  |  |  |  |
U.S. Pension Plans |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Service cost |  |  | $ 1,028 |  | $ 1,233 |  | $ 7,029
Interest cost |  |  | 30,514 |  | 30,235 |  | 30,491
Expected return on assets |  |  | (36,445) |  | (40,495) |  | (39,714)
Actuarial loss (gain) |  |  | 5,988 |  | 2,665 |  | 116,705
Amortization of prior service benefit |  |  | 75 |  | 75 |  | (727)
Total net pension benefits cost (credit) |  |  | $ 1,160 | [1] | $ (6,287) | [1] | $ 113,784
Weighted-average assumption percentages: |  |  |  |  |  |  |
Discount rate |  |  | 4.67% |  | 4.19% |  | 5.14%
Expected return on plan assets |  |  | 6.89% |  | 6.88% |  | 6.91%
Rate of compensation increase |  |  | 0.00% |  | 0.00% |  | 3.50%
Foreign Pension Plans |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Service cost |  |  | $ 3,133 |  | $ 3,909 |  | $ 1,746
Interest cost |  |  | 6,570 |  | 6,405 |  | 1,571
Expected return on assets |  |  | (4,027) |  | (3,670) |  | (427)
Actuarial loss (gain) |  |  | 19,418 |  | (27,043) |  | 10,270
Amortization of prior service benefit |  |  | 859 |  | 43 |  | 50
Total net pension benefits cost (credit) |  |  | $ 25,953 | [1] | $ (20,356) | [1] | $ 13,210
Weighted-average assumption percentages: |  |  |  |  |  |  |
Discount rate |  |  | 2.76% |  | 2.22% |  | 3.41%
Expected return on plan assets |  |  | 6.66% |  | 5.76% |  | 4.00%
Rate of compensation increase |  |  | 3.16% |  | 3.15% |  | 3.16%
Other Postretirement Benefits |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Service cost |  |  | $ 115 |  | $ 137 |  | $ 216
Interest cost |  |  | 2,483 |  | 2,573 |  | 3,040
Expected return on assets |  |  | (187) |  | (263) |  | (342)
Actuarial loss (gain) |  |  | 1,275 |  | (5,707) |  | 3,868
Amortization of prior service benefit |  |  | (95) |  | (95) |  | (95)
Total net pension benefits cost (credit) |  |  | $ 3,591 |  | (3,355) | [2] | $ 6,687
Net pension or postretirement benefits credit |  |  |  |  | $ 2,600 |  |
Weighted-average assumption percentages: |  |  |  |  |  |  |
Discount rate |  |  | 4.59% |  | 4.15% |  | 5.03%
Expected return on plan assets |  |  | 7.00% |  | 7.00% |  | 7.00%
Rate of compensation increase |  |  | 3.50% |  | 3.50% |  | 3.50%
Pension Plans |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Net pension or postretirement benefits credit |  |  | $ 10,800 |  | $ 6,200 |  |
[1] | For the years ended December 31, 2016 and 2015, $10.8 million and $6.2 million, respectively, of net pension benefits credit is included in Income (loss) from discontinued operations (net of tax) in the consolidated statements of income. See Note 3, “Divestitures,” for additional information.
[2] | For the year ended December 31, 2015, $2.6 million of net postretirement benefits credit is included in Income (loss) from discontinued operations (net of tax) in the consolidated statements of income. See Note 3, “Divestitures,” for additional information.

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- Definition Mark-to-market adjustments for the gain or losses occurring on pension or postretirement plans during the year, and any mark-to-market true-up or other adjustments. + References No definition available. + Details
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- Definition The amount of the prior service cost or credit recognized in net periodic benefit cost relating to benefit changes attributable to plan participants' prior service pursuant to a plan amendment or a plan initiation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Prior Service Cost -URI http://asc.fasb.org/extlink&oid=49177896 + Details
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- Definition The interest rate used to adjust for the time value of money. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512046 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition An amount calculated as a basis for determining the extent of delayed recognition of the effects of changes in the fair value of assets. The expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Expected Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512171 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(2) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Service Cost (Component of Net Periodic Pension Cost) -URI http://asc.fasb.org/extlink&oid=6525008 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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