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Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Stockholders' Equity Attributable to Parent | $ (2,438.9) | $ (2,273.0) | $ (2,029.6) |
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Stockholders' Equity Attributable to Parent | 8.9 | 9.9 | 11.2 | $ 12.6
OCI, before Reclassifications, before Tax, Attributable to Parent | 3.4 | (3.6) | 5.8 |
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | 2.1 | (5.3) | 4.0 |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | (0.3) | (0.4) | (0.4) |
Accumulated Foreign Currency Adjustment Attributable to Parent |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Stockholders' Equity Attributable to Parent | 160.1 | 106.3 | 152.1 | 95.4
OCI, before Reclassifications, before Tax, Attributable to Parent | (53.8) | 45.8 | (56.7) |
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | 0.0 | 0.0 | 0.0 |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 0.0 | 0.0 | 0.0 |
Accumulated Defined Benefit Plans Adjustment Attributable to Parent |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Stockholders' Equity Attributable to Parent | (40.6) | (51.4) | (48.3) | (52.6)
OCI, before Reclassifications, before Tax, Attributable to Parent | 13.9 | (4.1) | (1.6) |
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | (0.4) | (0.1) | (8.1) |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | 3.5 | (0.9) | 2.2 |
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |
Stockholders' Equity Attributable to Parent | 209.6 | 167.6 | 211.6 | $ 160.6
OCI, before Reclassifications, before Tax, Attributable to Parent | (36.5) | 38.1 | (52.5) |
Reclassification from AOCI, Current Period, before Tax, Attributable to Parent | (1.7) | 5.4 | 4.1 |
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent | $ (3.8) | $ 0.5 | $ (2.6) |

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