Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Mar. 31, 2023
Disaggregation of Revenue [Abstract]
Net sales	$ 622.4	$ 541.0
Contract Balances [Abstract]
Contract assets	26.6		$ 19.3
Contract liabilities	35.5		$ 21.5
Increase in contract assets	7.3
Increase in contract liabilities	14.0
Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	599.1	512.6
Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	31.6	36.1
Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	326.6	303.7
Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	247.2	195.1
Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	56.9	49.9
Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	125.9	134.7
HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	77.7	79.0
Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	68.2	30.5
Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	172.7	153.0
Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	134.7	110.9
Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	43.2	32.9
Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	271.8	244.2
Climate Solutions [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	257.7	230.8
Climate Solutions [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	14.1	13.6
Climate Solutions [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	141.6	139.4
Climate Solutions [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	123.7	99.0
Climate Solutions [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	6.5	6.0
Climate Solutions [Member] | Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	125.9	134.7
Climate Solutions [Member] | HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	77.7	79.0
Climate Solutions [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	68.2	30.5
Climate Solutions [Member] | Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0
Climate Solutions [Member] | Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0
Climate Solutions [Member] | Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0
Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	350.6	296.8
Performance Technologies [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	341.4	281.8
Performance Technologies [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	17.5	22.5
Performance Technologies [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	185.0	164.3
Performance Technologies [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	123.5	96.1
Performance Technologies [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	50.4	43.9
Performance Technologies [Member] | Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0
Performance Technologies [Member] | HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0
Performance Technologies [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0
Performance Technologies [Member] | Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	172.7	153.0
Performance Technologies [Member] | Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	134.7	110.9
Performance Technologies [Member] | Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	43.2	32.9
Operating Segments [Member]
Disaggregation of Revenue [Abstract]
Net sales	630.7	548.7
Operating Segments [Member] | Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	271.8	244.4
Operating Segments [Member] | Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	358.9	304.3
Inter-segment Sales [Member]
Disaggregation of Revenue [Abstract]
Net sales	(8.3)	(7.7)
Inter-segment Sales [Member] | Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.2
Inter-segment Sales [Member] | Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 8.3	$ 7.5