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Accumulated Other Comprehensive Loss (Details) $ in Millions | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Oct. 31, 2023 USD ($) item | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($)
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Beginning balance |  |  |  | $ 747.6 |
Ending balance |  | $ 855.1 |  | 855.1 |
Number of automotive businesses sold | item | 3 |  |  |  |
Accumulated other comprehensive loss |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Beginning balance | $ (173.7) | (147.8) | $ (173.7) | (163.4) | $ (161.1)
Other comprehensive income (loss) before reclassifications |  | (48.3) | 19.9 | (34.1) | 6.2
Income taxes |  | (0.2) | (0.5) | (0.8) | (0.7)
Total other comprehensive income (loss) |  | (47.5) | 19.9 | (31.9) | 7.3
Ending balance |  | (195.3) | (153.8) | (195.3) | (153.8)
Foreign Currency Translation |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Beginning balance | (70.8) | (49.0) | (70.8) | (62.8) | (57.5)
Other comprehensive income (loss) before reclassifications |  | (48.2) | 19.3 | (34.4) | 6.0
Income taxes |  | 0.0 | 0.0 | 0.0 | 0.0
Total other comprehensive income (loss) |  | (48.2) | 19.3 | (34.4) | 6.0
Ending balance |  | (97.2) | (51.5) | (97.2) | (51.5)
Defined Benefit Plans |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Beginning balance | (102.8) | (99.1) | (102.8) | (100.7) | (104.4)
Other comprehensive income (loss) before reclassifications |  | 0.0 | 0.0 | 0.0 | 0.0
Reclassification from accumulated other comprehensive income (loss) |  | 1.1 | 1.0 | 3.2 | 3.1
Unrecognized net pension gain in disposed businesses |  |  | (0.6) |  | (0.6)
Income taxes |  | (0.3) | (0.3) | (0.8) | (0.8)
Total other comprehensive income (loss) |  | 0.8 | 0.1 | 2.4 | 1.7
Ending balance |  | (98.3) | (102.7) | (98.3) | (102.7)
Write-off of net actuarial gains |  |  | 0.6 |  | 0.6
Cash Flow Hedges |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Beginning balance | $ (0.1) | 0.3 | (0.1) | 0.1 | 0.8
Other comprehensive income (loss) before reclassifications |  | (0.1) | 0.6 | 0.3 | 0.2
Reclassification from accumulated other comprehensive income (loss) |  | (0.1) | 0.1 | (0.2) | (0.7)
Income taxes |  | 0.1 | (0.2) | 0.0 | 0.1
Total other comprehensive income (loss) |  | (0.1) | 0.5 | 0.1 | (0.4)
Ending balance |  | $ 0.2 | $ 0.4 | $ 0.2 | $ 0.4

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