Revenue Recognition (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Abstract]
Net sales	$ 2,297.9	$ 2,050.1	$ 1,808.4
Contract Balances [Abstract]
Contract assets	19.3	26.8
Contract liabilities	21.5	11.8
Decrease in contract assets	(7.5)
Increase in contract liabilities	9.7
Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	2,202.1	1,983.0	1,767.4
Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	126.0	99.9	72.6
Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,282.9	1,071.5	851.7
Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	814.5	772.4	718.1
Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 230.7	239.0	270.2
Maximum [Member]
Revenue Recognition [Abstract]
Period of time after billing when payment is received	90 days
Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 521.2	488.3	386.9
HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	336.3	325.5	279.7
Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	154.0	96.3	64.5
Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	658.6	572.3	520.3
Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	483.9	448.3	458.9
Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	143.9	119.4	98.1
Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,011.5	910.1	731.1
Climate Solutions [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	959.8	889.3	722.7
Climate Solutions [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	52.1	21.2	8.5
Climate Solutions [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	580.9	485.9	379.7
Climate Solutions [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	406.0	396.7	307.0
Climate Solutions [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	25.0	27.9	44.5
Climate Solutions [Member] | Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	521.2	488.3	386.9
Climate Solutions [Member] | HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	336.3	325.5	279.7
Climate Solutions [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	154.0	96.3	64.5
Climate Solutions [Member] | Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0
Climate Solutions [Member] | Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0
Climate Solutions [Member] | Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0
Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,286.4	1,140.0	1,077.3
Performance Technologies [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,242.3	1,093.7	1,044.7
Performance Technologies [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	73.9	78.7	64.1
Performance Technologies [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	702.0	585.6	472.0
Performance Technologies [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	408.5	375.7	411.1
Performance Technologies [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	205.7	211.1	225.7
Performance Technologies [Member] | Heat Transfer [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0
Performance Technologies [Member] | HVAC & Refrigeration [Member]
Disaggregation of Revenue [Abstract]
Net sales	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
Performance Technologies [Member] | Air-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	658.6	572.3	520.3
Performance Technologies [Member] | Liquid-Cooled [Member]
Disaggregation of Revenue [Abstract]
Net sales	483.9	448.3	458.9
Performance Technologies [Member] | Advanced Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	143.9	119.4	98.1
Operating Segments [Member]
Disaggregation of Revenue [Abstract]
Net sales	2,328.1	2,082.9	1,840.0
Operating Segments [Member] | Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,011.9	910.5	731.2
Operating Segments [Member] | Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	1,316.2	1,172.4	1,108.8
Inter-segment Sales [Member]
Disaggregation of Revenue [Abstract]
Net sales	(30.2)	(32.8)	(31.6)
Inter-segment Sales [Member] | Climate Solutions [Member]
Disaggregation of Revenue [Abstract]
Net sales	(0.4)	(0.4)	(0.1)
Inter-segment Sales [Member] | Performance Technologies [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ (29.8)	$ (32.4)	$ (31.5)