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Benefit Plans, Defined Benefit Pension Plan Assets Measured at Fair Value (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | $ 381.3 | $ 358.2 |
U.S. Plans [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 293.7 | 271.6 | $ 261.5
International Plans [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 87.6 | 86.6 | $ 78.5
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 303.5 | 280.7 |
Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 71.8 | 69.2 |
Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 6.0 | 8.3 |
Equity Securities [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 206.7 | 200.0 |
US Equities [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 182.7 | 182.0 |
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 | 182.7 | 182.0 |
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 | 24.0 | 18.0 |
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 | 24.0 | 18.0 |
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 | 116.5 | 99.7 |
Corporate Debt Instruments [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 116.5 | 99.7 |
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 | 96.4 | 80.4 |
Corporate Debt Instruments [Member] | Significant Other Observable Inputs (Level 2) [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 20.1 | 19.3 |
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 | 1.0 | 1.0 |
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 | 1.0 | 1.0 |
Other [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | 57.1 | 57.5 |
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 | 51.7 | 49.9 |
Other [Member] | Significant Unobservable Inputs (Level 3) [Member] |  |  |
Fair value of plan assets [Abstract] |  |  |
Fair value of plan assets | $ 5.0 | $ 7.3 |

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