Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2023
Disaggregation of Revenue [Abstract]
Net sales	$ 561.4	$ 560.0	$ 1,804.3	$ 1,679.8
Contract Balances [Abstract]
Contract assets	14.7		14.7		$ 19.3
Contract liabilities	79.2		79.2		$ 21.5
Decrease in contract assets			(4.6)
Increase in contract liabilities			57.7
Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	542.4	534.3	1,747.8	1,599.7
Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	23.1	32.1	75.9	101.3
Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	330.1	315.7	1,009.8	958.5
Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	179.0	192.0	645.7	569.3
Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	56.4	58.7	168.2	173.2
Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	90.0	113.7	321.7	374.7
HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	92.0	89.8	260.9	262.0
Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	60.5	45.1	207.5	111.9
Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	162.0	158.9	508.0	481.2
Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	112.1	117.3	373.2	347.2
Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	44.8	35.2	133.0	102.8
Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	242.5	248.6	790.1	748.6
Climate Solutions [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	233.0	233.3	761.8	707.1
Climate Solutions [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	9.5	15.3	28.3	41.8
Climate Solutions [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	145.2	148.5	450.0	444.2
Climate Solutions [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	89.1	94.4	319.4	284.3
Climate Solutions [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	8.2	5.7	20.7	20.4
Climate Solutions [Member] | Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	90.0	113.7	321.7	374.7
Climate Solutions [Member] | HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	92.0	89.8	260.9	262.0
Climate Solutions [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	60.5	45.1	207.5	111.9
Climate Solutions [Member] | Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Climate Solutions [Member] | Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Climate Solutions [Member] | Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	318.9	311.4	1,014.2	931.2
Performance Technologies [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	309.4	301.0	986.0	892.6
Performance Technologies [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	13.6	16.8	47.6	59.5
Performance Technologies [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	184.9	167.2	559.8	514.3
Performance Technologies [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	89.9	97.6	326.3	285.0
Performance Technologies [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	48.2	53.0	147.5	152.8
Performance Technologies [Member] | Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Performance Technologies [Member] | HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Performance Technologies [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Performance Technologies [Member] | Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	162.0	158.9	508.0	481.2
Performance Technologies [Member] | Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	112.1	117.3	373.2	347.2
Performance Technologies [Member] | Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	44.8	35.2	133.0	102.8
Operating Segments [Member]
Disaggregation of Revenue [Abstract]
Net sales	565.5	566.4	1,823.7	1,701.0
Operating Segments [Member] | Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	242.5	248.6	790.1	748.9
Operating Segments [Member] | Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	323.0	317.8	1,033.6	952.1
Inter-segment Sales [Member]
Disaggregation of Revenue [Abstract]
Net sales	4.1	6.4	19.4	21.2
Inter-segment Sales [Member] | Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.3
Inter-segment Sales [Member] | Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 4.1	$ 6.4	$ 19.4	$ 20.9