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Benefit Plans, Defined Benefit Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | $ 317.4 | $ 285.4 |
U.S. Plans [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 251.4 | 226.4 | $ 293.8
International Plans [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 66.0 | 59.0 | $ 87.6
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 261.3 | 234.9 |
Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 49.0 | 42.9 |
Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 7.1 | 7.6 |
Equity Securities [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 162.9 | 155.0 |
US Equities [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 142.5 | 135.7 |
US Equities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 142.5 | 135.7 |
US Equities [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.0 | 0.0 |
US Equities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.0 | 0.0 |
Non-US Equities [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 20.4 | 19.3 |
Non-US Equities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 20.4 | 19.3 |
Non-US Equities [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.0 | 0.0 |
Non-US Equities [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.0 | 0.0 |
Fixed Income Securities [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 112.0 | 91.9 |
Corporate Debt Instruments [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 112.0 | 91.9 |
Corporate Debt Instruments [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 98.0 | 79.6 |
Corporate Debt Instruments [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 14.0 | 12.3 |
Corporate Debt Instruments [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.0 | 0.0 |
Real Estate [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.8 | 0.8 |
Real Estate [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.0 | 0.0 |
Real Estate [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.0 | 0.0 |
Real Estate [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.8 | 0.8 |
Other [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 41.7 | 37.7 |
Other [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 0.4 | 0.3 |
Other [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | 35.0 | 30.6 |
Other [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair Value of Plan Assets [Abstract] |  |  |
Fair value of plan assets | $ 6.3 | $ 6.8 |

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