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Employee and Retiree Benefit Plans - Amount Related to Foreign Benefit Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets at December 31 |  | $ 547,484 | $ 487,094
Foreign Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets at December 31 |  | 197,965 | 170,551
Pension Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Benefit obligation at December 31 | $ 883,269 | 777,645 | 881,932
Fair value of plan assets at December 31 | 547,484 | 487,094 | 563,825
Net plan liabilities recognized | (335,785) | (290,551) |
Net periodic benefit expense (benefit) | 25,150 | 28,840 | 24,102
Pension Benefits | Foreign Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Benefit obligation at December 31 |  | 209,923 | 173,860
Fair value of plan assets at December 31 |  | 197,965 | 170,551
Net plan liabilities recognized |  | (11,957) | 3,309
Net periodic benefit expense (benefit) |  | (933) | 3,983
Other Postretirement Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Benefit obligation at December 31 | 108,401 | 94,779 | 106,276
Fair value of plan assets at December 31 | 0 | 0 | 0
Net plan liabilities recognized | (108,401) | (94,779) |
Net periodic benefit expense (benefit) | $ 5,230 | 5,354 | 4,971
Other Postretirement Benefits | Foreign Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Benefit obligation at December 31 |  | 387 | 812
Fair value of plan assets at December 31 |  | 0 | 0
Net plan liabilities recognized |  | 387 | 812
Net periodic benefit expense (benefit) |  | $ 147 | $ 146

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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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