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Employee Benefit Plans - Estimated Future Benefit Payments (Details) | 12 Months Ended
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Dec. 31, 2020 USD ($)
Postretirement Plans |
Estimated future benefit payments, net of subsidies: |
2021 | $ 6,800,000
2022 | 6,200,000
2023 | 5,600,000
2024 | 5,000,000.0
2025 | 4,600,000
Subsequent five years | 17,000,000.0
Non-qualified pension plans |
Employee benefit plans |
Expected minimum required funding contributions in 2019 | 5,400,000
United States |
Employee benefit plans |
Employer contributions | 0
Estimated future benefit payments, net of subsidies: |
2021 | 25,100,000
2022 | 26,300,000
2023 | 25,700,000
2024 | 25,500,000
2025 | 24,500,000
Subsequent five years | 105,400,000
Foreign Plan |
Employee benefit plans |
Employer contributions | 900,000
Expected minimum required funding contributions in 2019 | 1,000,000.0
Estimated future benefit payments, net of subsidies: |
2021 | 5,000,000.0
2022 | 6,200,000
2023 | 6,100,000
2024 | 6,400,000
2025 | 7,400,000
Subsequent five years | $ 37,700,000

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