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Pension and Other Post-retirement Benefits Estimated Future Annual Benefit Payments From Plan Assets (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Pension Benefits |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
2020 | $ 45.0
2021 | 45.0
2022 | 44.6
2023 | 44.2
2024 | 43.9
2025 through 2029 | 213.6
Other Postretirement Benefits Plan |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
2020 | 1.5
2021 | 1.4
2022 | 1.3
2023 | 1.3
2024 | 1.3
2025 through 2029 | $ 5.3

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