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Retirement Plans And Postretirement Benefits (Projected Future Postretirement Cash Flow By Year) (Details) $ in Thousands | Dec. 31, 2017 USD ($)
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U.S. |
Defined Benefit Plan Disclosure [Line Items] |
Expected employer contributions | $ 4,542
2018 | 9,086
2019 | 9,053
2020 | 9,083
2021 | 9,116
2022 | 9,103
2023 - 2027 | 44,783
U.S. | Postretirement Costs |
Defined Benefit Plan Disclosure [Line Items] |
Expected employer contributions | 855
2018 | 855
2019 | 800
2020 | 740
2021 | 678
2022 | 622
2023 - 2027 | 2,415
Foreign |
Defined Benefit Plan Disclosure [Line Items] |
Expected employer contributions | 558
2018 | 864
2019 | 751
2020 | 743
2021 | 778
2022 | 771
2023 - 2027 | 6,285
Foreign | Postretirement Costs |
Defined Benefit Plan Disclosure [Line Items] |
Expected employer contributions | 912
2018 | 912
2019 | 907
2020 | 909
2021 | 900
2022 | 885
2023 - 2027 | $ 4,518

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