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Retirement Benefits (Details 14) $ in Millions | Dec. 31, 2019 USD ($)
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Pension Benefits [Member] |
Defined Benefit Plan Expected Future Benefit Payments [Abstract] |
2020 | $ 174.7
2021 | 172.0
2022 | 170.3
2023 | 168.3
2024 | 166.0
2025-2029 | 786.5
Other Postretirement Benefits |
Defined Benefit Plan Expected Future Benefit Payments [Abstract] |
2020 | 32.8
2021 | 34.1
2022 | 31.6
2023 | 29.4
2024 | 27.4
2025-2029 | 110.1
Medicare Part D Subsidy [Abstract] |
2020 | 0.3
2021 | 0.3
2022 | 0.2
2023 | 0.2
2024 | 0.2
2025-2029 | $ 0.7

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