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Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	$ 616.8	$ 561.4	$ 1,936.3	$ 1,804.3
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Contract assets	11.3		11.3		$ 12.9
Contract liabilities	44.1		44.1		$ 79.4
Decrease in contract assets			(1.6)
Decrease in contract liabilities			(35.3)
Products transferred at a point in time
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	593.6	541.8	1,885.6	1,745.3
Products transferred over time
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	29.4	23.1	67.6	75.9
Americas
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	415.7	329.7	1,275.7	1,008.2
Europe
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	160.0	178.8	530.0	644.8
Asia
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	47.3	56.4	147.5	168.2
Data center cooling
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	166.9	60.5	488.4	207.5
Heat transfer
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	88.1	101.5	303.3	361.5
HVAC&R
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	105.7	92.0	292.6	260.9
Air-cooled
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	133.9	162.0	457.7	508.0
Liquid-cooled
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	91.3	112.1	294.4	373.2
Advanced solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	30.9	33.3	99.9	93.2
Climate Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	360.7	254.0	1,084.3	829.9
Climate Solutions | Products transferred at a point in time
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	333.5	233.7	1,025.1	763.5
Climate Solutions | Products transferred over time
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	27.3	20.3	59.4	66.4
Climate Solutions | Americas
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	255.5	153.5	748.1	480.9
Climate Solutions | Europe
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	97.9	92.3	315.3	328.3
Climate Solutions | Asia
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	7.4	8.2	21.1	20.7
Climate Solutions | Data center cooling
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	166.9	60.5	488.4	207.5
Climate Solutions | Heat transfer
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	88.1	101.5	303.3	361.5
Climate Solutions | HVAC&R
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	105.7	92.0	292.6	260.9
Climate Solutions | Air-cooled
Disaggregation of Revenue [Abstract]
Disaggregation of revenue			0.0	0.0
Climate Solutions | Liquid-cooled
Disaggregation of Revenue [Abstract]
Disaggregation of revenue			0.0	0.0
Climate Solutions | Advanced solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue			0.0	0.0
Performance Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	256.1	307.4	852.0	974.4
Performance Technologies | Products transferred at a point in time
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	260.1	308.1	860.5	981.8
Performance Technologies | Products transferred over time
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	2.1	2.8	8.2	9.5
Performance Technologies | Americas
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	160.2	176.2	527.6	527.3
Performance Technologies | Europe
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	62.1	86.5	214.7	316.5
Performance Technologies | Asia
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	39.9	48.2	126.4	147.5
Performance Technologies | Data center cooling
Disaggregation of Revenue [Abstract]
Disaggregation of revenue			0.0	0.0
Performance Technologies | Heat transfer
Disaggregation of Revenue [Abstract]
Disaggregation of revenue			0.0	0.0
Performance Technologies | HVAC&R
Disaggregation of Revenue [Abstract]
Disaggregation of revenue			0.0	0.0
Performance Technologies | Air-cooled
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	133.9	162.0	457.7	508.0
Performance Technologies | Liquid-cooled
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	91.3	112.1	294.4	373.2
Performance Technologies | Advanced solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	30.9	33.3	99.9	93.2
Operating segments
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	623.0	564.9	1,953.2	1,821.2
Operating segments | Climate Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	360.8	254.0	1,084.5	829.9
Operating segments | Performance Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	262.2	310.9	868.7	991.3
Inter-segment Sales
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	6.2	3.5	16.9	16.9
Inter-segment Sales | Climate Solutions
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	0.1		0.2	0.0
Inter-segment Sales | Performance Technologies
Disaggregation of Revenue [Abstract]
Disaggregation of revenue	$ 6.1	$ 3.5	$ 16.7	$ 16.9

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