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Benefit Plans Net Periodic Pension Costs (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Service Cost | $ 16,597 | $ 16,635 | $ 16,906
Defined Benefit Plan, Interest Cost | 14,841 | 12,938 | 12,955
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | 35,049 | 37,934 | 37,086
Amortization of Actuarial (Gains) Losses and Plan Amendments | 15,467 | 18,756 | 20,129
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 11,856 | 10,395 | 12,904
Pension Plan [Member] | Foreign Plan [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Service Cost | 15,534 | 15,545 | 16,341
Defined Benefit Plan, Interest Cost | 10,192 | 8,630 | 8,511
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | 29,162 | 31,005 | 30,349
Amortization of Actuarial (Gains) Losses and Plan Amendments | 13,784 | 14,575 | 16,247
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 10,348 | 7,745 | 10,750
Pension Plan [Member] | UNITED STATES |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Service Cost | 1,063 | 1,090 | 565
Defined Benefit Plan, Interest Cost | 4,585 | 4,242 | 4,374
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | 5,887 | 6,929 | 6,737
Amortization of Actuarial (Gains) Losses and Plan Amendments | 2,374 | 5,804 | 6,556
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | 2,135 | 4,207 | 4,758
Other Postretirement Benefits Plan [Member] | UNITED STATES |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Defined Benefit Plan, Service Cost | 0 | 0 | 0
Defined Benefit Plan, Interest Cost | 64 | 66 | 70
Amortization of Actuarial (Gains) Losses and Plan Amendments | (691) | (1,623) | (2,674)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) | $ (627) | $ (1,557) | $ (2,604)

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- Definition Amortization of actuarial (gains) losses and plan amendments and prior service cost recorded to net periodic pension cost from other comprehensive income during the period, gross. + References No definition available. + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: 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=118257860&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h)(3) -URI http://asc.fasb.org/extlink&oid=118255775&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 6 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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- Definition Amount of cost recognized for passage of time related to defined benefit plan. + 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 (h)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: 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=118257860&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920 + Details
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