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Retirement Benefit Plans (Expected Plan Benefit Payments) (Details) $ in Thousands | Dec. 31, 2019 USD ($)
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Defined Benefit Plan Disclosure [Line Items] |
2020 | $ 23,823
2021 | 24,904
2022 | 26,018
2023 | 27,006
2024 | 28,269
2025-2029 | 160,431
Total | 290,451
Pension Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2020 | 22,974
2021 | 24,016
2022 | 25,163
2023 | 26,130
2024 | 27,414
2025-2029 | 156,055
Total | 281,752
Other Post-Retirement Benefits [Member] |
Defined Benefit Plan Disclosure [Line Items] |
2020 | 849
2021 | 888
2022 | 855
2023 | 876
2024 | 855
2025-2029 | 4,376
Total | $ 8,699

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