Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Mar. 31, 2025
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	$ 682.8	$ 661.5
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract assets	16.1		$ 13.3
Contract liabilities	35.3		$ 35.1
Increase in contract assets	2.8
Increase in contract liabilities	0.2
Americas
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	429.7	424.7
Europe
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	198.2	191.6
Asia
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	55.0	50.0
Data Centers
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	186.9	162.6
Heat Transfer Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	143.2	144.6
HVAC Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	67.2	50.0
Heavy-duty equipment
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	106.3	110.5
On-highway applications
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	179.2	193.8
Climate Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	397.3	357.2
Climate Solutions | Americas
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	276.7	240.0
Climate Solutions | Europe
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	114.2	111.5
Climate Solutions | Asia
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	6.5	5.8
Climate Solutions | Data Centers
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	186.9	162.6
Climate Solutions | Heat Transfer Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	143.2	144.6
Climate Solutions | HVAC Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	67.2	50.0
Performance Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	285.5	304.3
Performance Technologies | Americas
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	153.0	184.7
Performance Technologies | Europe
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	84.0	80.1
Performance Technologies | Asia
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	48.5	44.2
Performance Technologies | Heavy-duty equipment
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	106.3	110.5
Performance Technologies | On-highway applications
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	179.2	193.8
Operating segments
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	682.9	666.3
Operating segments | Climate Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	397.4	357.3
Operating segments | Performance Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	285.5	309.0
Inter-segment Sales
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	0.1	4.8
Inter-segment Sales | Climate Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	$ 0.1	0.1
Inter-segment Sales | Performance Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue		$ 4.7