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Accumulated Other Comprehensive Loss (Details) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2023 Business | Dec. 31, 2023 Business | Mar. 31, 2024 USD ($) Business | Mar. 31, 2023 USD ($)
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Balance |  |  |  | $ 592.8 |
Other comprehensive income (loss) before reclassifications |  |  |  | (3.4) | $ (15.5)
Unrecognized net pension gain in disposed businesses |  |  |  | (0.6) |
Income taxes |  |  |  | (1.4) | (1.1)
Total other comprehensive income (loss) |  |  |  | (2.3) | (11.6)
Balance |  |  |  | $ 747.6 | 592.8
Number of automotive businesses sold | Business |  | 3 | 3 | 3 |
Accumulated Other Comprehensive Loss [Member] |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Balance |  |  |  | $ (161.1) | (149.5)
Balance |  |  |  | (163.4) | (161.1)
Foreign Currency Translation [Member] |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Balance |  |  |  | (57.5) | (39.1)
Other comprehensive income (loss) before reclassifications |  |  |  | (5.3) | (18.4)
Income taxes |  |  |  | 0.0 | 0.0
Total other comprehensive income (loss) |  |  |  | (5.3) | (18.4)
Balance |  |  |  | (62.8) | (57.5)
Defined Benefit Plans [Member] |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Balance |  |  |  | (104.4) | (111.1)
Other comprehensive income (loss) before reclassifications |  |  |  | 1.8 | 2.5
Reclassification from accumulated other comprehensive income (loss) | [1] |  |  | 4.1 | 5.3
Unrecognized net pension gain in disposed businesses | [2] |  |  | (0.6) |
Income taxes |  |  |  | (1.6) | (1.1)
Total other comprehensive income (loss) |  |  |  | 3.7 | 6.7
Balance |  |  |  | (100.7) | (104.4)
Cash Flow Hedges [Member] |  |  |  |  |
Changes in Accumulated Other Comprehensive Loss [Abstract] |  |  |  |  |
Balance |  |  |  | 0.8 | 0.7
Other comprehensive income (loss) before reclassifications |  |  |  | 0.1 | 0.4
Reclassification from accumulated other comprehensive income (loss) | [3] |  |  | (1.0) | (0.3)
Income taxes |  |  |  | 0.2 | 0.0
Total other comprehensive income (loss) |  |  |  | (0.7) | 0.1
Balance |  |  |  | $ 0.1 | $ 0.8
[1] | Amounts are included in the calculation of net periodic benefit cost for the Company’s defined benefit plans, which include pension and other postretirement plans. See Note 18 for additional information about the Company’s pension plans.
[2] | As a result of the sale of three automotive businesses based in Germany, the Company wrote-off $0.6 million of net actuarial gains related to the disposal group’s pension plan. See Note 2 for additional information regarding the sale.
[3] | Amounts represent net gains and losses associated with cash flow hedges that were reclassified to net earnings. See Note 19 for additional information regarding derivative instruments.

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