Segment Information (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
Segment Information [Abstract]
Net sales		$ 561.4	$ 560.0	$ 1,804.3	$ 1,679.8
Gross profit		$ 127.3	$ 97.6	$ 390.3	$ 277.2
Gross profit (% of sales)		22.70%	17.40%	21.60%	16.50%
Operating income		$ 61.7	$ 39.5	$ 193.9	$ 101.9
Total assets		1,651.4		1,651.4		$ 1,565.9
Climate Solutions [Member]
Segment Information [Abstract]
Net sales		242.5	248.6	790.1	748.6
Performance Technologies [Member]
Segment Information [Abstract]
Net sales		318.9	311.4	1,014.2	931.2
Other [Member]
Segment Information [Abstract]
Total assets	[1]	945.7		945.7		843.0
Operating Segments [Member]
Segment Information [Abstract]
Net sales		565.5	566.4	1,823.7	1,701.0
Gross profit		$ 127.1	$ 97.8	$ 389.3	$ 277.7
Gross profit (% of sales)		22.50%	17.30%	21.30%	16.30%
Operating income		$ 70.0	$ 47.6	$ 224.5	$ 131.0
Operating Segments [Member] | Segment Total [Member]
Segment Information [Abstract]
Net sales		565.5	566.4	1,823.7	1,701.0
Operating Segments [Member] | Climate Solutions [Member]
Segment Information [Abstract]
Net sales		242.5	248.6	790.1	748.9
Gross profit		$ 66.1	$ 54.8	$ 206.9	$ 162.5
Gross profit (% of sales)		27.30%	22.00%	26.20%	21.70%
Operating income		$ 38.8	$ 30.2	$ 127.7	$ 89.9
Total assets		348.0		348.0		334.8
Operating Segments [Member] | Performance Technologies [Member]
Segment Information [Abstract]
Net sales		323.0	317.8	1,033.6	952.1
Gross profit		$ 61.0	$ 43.0	$ 182.4	$ 115.2
Gross profit (% of sales)		18.90%	13.50%	17.60%	12.10%
Operating income		$ 31.2	$ 17.4	$ 96.8	$ 41.1
Total assets		357.7		357.7		$ 388.1
Inter-segment Sales [Member]
Segment Information [Abstract]
Net sales		4.1	6.4	19.4	21.2
Inter-segment Sales [Member] | Climate Solutions [Member]
Segment Information [Abstract]
Net sales		0.0	0.0	0.0	0.3
Inter-segment Sales [Member] | Performance Technologies [Member]
Segment Information [Abstract]
Net sales		4.1	6.4	19.4	20.9
Corporate and Eliminations [Member]
Segment Information [Abstract]
Net sales		(4.1)	(6.4)	(19.4)	(21.2)
Gross profit		$ 0.2	$ (0.2)	$ 1.0	$ (0.5)
Gross profit (% of sales)		0.00%	0.00%	0.00%	0.00%
Operating income		$ (8.3)	$ (8.1)	$ (30.6)	$ (29.1)

[1] Represents cash and cash equivalents, other current assets, property plant and equipment, intangible assets, goodwill, deferred income taxes, and other noncurrent assets for the Climate Solutions and Performance Technologies segments and Corporate.