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Employee Benefit Plans - Expected Benefit Payments (Details) - Pension Plans $ in Thousands | Dec. 31, 2018 USD ($)
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Pension benefits expected to be paid |
2019 | $ 104,596
2020 | 107,603
2021 | 112,469
2022 | 116,601
2023 | 120,086
2024-2028 | $ 639,201

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