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Pension and Other Post-retirement Benefits Estimated Future Annual Benefit Payments From Plan Assets (Details) $ in Millions | Dec. 31, 2020 USD ($)
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Pension Benefits |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
2020 | $ 44.5
2021 | 44.2
2022 | 43.8
2023 | 43.4
2024 | 43.0
2026 through 2030 | 208.0
Other Postretirement Benefits Plan |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
2020 | 1.4
2021 | 1.3
2022 | 1.3
2023 | 1.2
2024 | 1.2
2026 through 2030 | $ 4.6

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