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Benefit Plans and Other Postretirement Benefits, Other (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Pension Benefits |  |  |  |
Accumulated other comprehensive income (loss), before tax |  |  |  |
Actuarial losses, net |  | $ 241.2 | $ 242.2 |
Prior service cost |  | 9.5 | 6.5 |
Defined Benefit Plan, Contributions |  |  |  |
Plan contributions by employer |  | 6.6 | 88.3 | $ 22.5
Expected benefits payments |  |  |  |
2020 |  | 33.6 |  |
2021 |  | 35.2 |  |
2022 |  | 37.5 |  |
2023 |  | 38.2 |  |
2024 |  | 40.1 |  |
2025-2029 |  | 205.8 |  |
Pension Benefits | United States |  |  |  |
Accumulated other comprehensive income (loss), before tax |  |  |  |
Actuarial losses, net |  | 164.3 | 178.8 |
Prior service cost |  | 8.7 | 5.7 |
Defined Benefit Plan, Contributions |  |  |  |
Plan contributions by employer | $ 81.0 | 1.0 | 81.7 |
Expected benefits payments |  |  |  |
2020 |  | 26.7 |  |
2021 |  | 27.9 |  |
2022 |  | 28.9 |  |
2023 |  | 29.8 |  |
2024 |  | 30.5 |  |
2025-2029 |  | 152.7 |  |
Pension Benefits | Foreign. |  |  |  |
Accumulated other comprehensive income (loss), before tax |  |  |  |
Actuarial losses, net |  | 76.9 | 63.4 |
Prior service cost |  | 0.8 | 0.8 |
Defined Benefit Plan, Contributions |  |  |  |
Plan contributions by employer |  | 5.6 | 6.6 |
Expected benefits payments |  |  |  |
2020 |  | 6.9 |  |
2021 |  | 7.3 |  |
2022 |  | 8.6 |  |
2023 |  | 8.4 |  |
2024 |  | 9.6 |  |
2025-2029 |  | 53.1 |  |
Other Foreign Statutory Plans [Member] | Foreign. |  |  |  |
Net liability |  |  |  |
Net liability for foreign subsidiaries with benefits under local statutory plans |  | $ 15.1 | $ 13.7 |

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