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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