Revenue Recognition (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Mar. 31, 2020
Disaggregation of Revenue [Abstract]
Net sales	$ 461.4	$ 500.2	$ 809.2	$ 1,029.2
Contract with Customer, Asset and Liability [Abstract]
Contract assets	14.6		14.6		$ 21.7
Contract liabilities	8.4		8.4		$ 5.6
Decrease in contract assets			(7.1)
Increase in contract liabilities			2.8
Total Segments [Member]
Disaggregation of Revenue [Abstract]
Net sales	471.5	515.6	827.2	1,063.4
Total Segments [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	452.1	482.7	792.4	998.2
Total Segments [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	19.4	32.9	34.8	65.2
Total Segments [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	221.6	269.2	382.9	548.8
Total Segments [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	183.9	189.7	320.1	397.6
Total Segments [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	66.0	56.7	124.2	117.0
Total Segments [Member] | Commercial HVAC&R [Member]
Disaggregation of Revenue [Abstract]
Net sales	153.4	162.0	279.8	330.9
Total Segments [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	28.0	36.2	56.8	71.0
Total Segments [Member] | Industrial Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	12.7	11.7	24.6	23.1
Total Segments [Member] | Commercial Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	65.3	81.8	113.7	180.5
Total Segments [Member] | Off-Highway [Member]
Disaggregation of Revenue [Abstract]
Net sales	58.9	59.6	113.0	133.5
Total Segments [Member] | Automotive and Light Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	125.6	135.1	193.0	264.3
Total Segments [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Net sales	27.6	29.2	46.3	60.1
CIS [Member]
Disaggregation of Revenue [Abstract]
Net sales	134.1	156.7	256.6	325.5
CIS [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	122.9	132.4	232.2	276.3
CIS [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	11.2	24.3	24.4	49.2
CIS [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	67.6	86.0	127.5	183.1
CIS [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	53.0	57.5	103.9	116.1
CIS [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	13.5	13.2	25.2	26.3
CIS [Member] | Commercial HVAC&R [Member]
Disaggregation of Revenue [Abstract]
Net sales	105.3	115.9	199.2	246.8
CIS [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	14.4	26.7	28.2	50.9
CIS [Member] | Industrial Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	12.7	11.7	24.6	23.1
CIS [Member] | Commercial Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
CIS [Member] | Off-Highway [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
CIS [Member] | Automotive and Light Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
CIS [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Net sales	1.7	2.4	4.6	4.7
BHVAC [Member]
Disaggregation of Revenue [Abstract]
Net sales	61.9	56.0	109.5	105.0
BHVAC [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	61.9	56.0	109.5	105.0
BHVAC [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
BHVAC [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	38.5	38.1	64.5	67.2
BHVAC [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	23.4	17.9	45.0	37.8
BHVAC [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
BHVAC [Member] | Commercial HVAC&R [Member]
Disaggregation of Revenue [Abstract]
Net sales	48.1	46.1	80.6	84.1
BHVAC [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	13.6	9.5	28.6	20.1
BHVAC [Member] | Industrial Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
BHVAC [Member] | Commercial Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
BHVAC [Member] | Off-Highway [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
BHVAC [Member] | Automotive and Light Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
BHVAC [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.2	0.4	0.3	0.8
HDE [Member]
Disaggregation of Revenue [Abstract]
Net sales	165.6	187.2	289.1	403.6
HDE [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	157.4	178.6	278.7	387.6
HDE [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	8.2	8.6	10.4	16.0
HDE [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	98.6	127.5	166.5	263.5
HDE [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	32.1	31.7	56.2	78.1
HDE [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	34.9	28.0	66.4	62.0
HDE [Member] | Commercial HVAC&R [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
HDE [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
HDE [Member] | Industrial Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
HDE [Member] | Commercial Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	61.5	76.1	107.8	168.8
HDE [Member] | Off-Highway [Member]
Disaggregation of Revenue [Abstract]
Net sales	58.1	56.7	111.5	126.9
HDE [Member] | Automotive and Light Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	28.0	30.4	41.0	57.2
HDE [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Net sales	18.0	24.0	28.8	50.7
Automotive [Member]
Disaggregation of Revenue [Abstract]
Net sales	109.9	115.7	172.0	229.3
Automotive [Member] | Products Transferred at a Point in Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	109.9	115.7	172.0	229.3
Automotive [Member] | Products Transferred Over Time [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Automotive [Member] | Americas [Member]
Disaggregation of Revenue [Abstract]
Net sales	16.9	17.6	24.4	35.0
Automotive [Member] | Europe [Member]
Disaggregation of Revenue [Abstract]
Net sales	75.4	82.6	115.0	165.6
Automotive [Member] | Asia [Member]
Disaggregation of Revenue [Abstract]
Net sales	17.6	15.5	32.6	28.7
Automotive [Member] | Commercial HVAC&R [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Automotive [Member] | Data Center Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Automotive [Member] | Industrial Cooling [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.0	0.0	0.0	0.0
Automotive [Member] | Commercial Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	3.8	5.7	5.9	11.7
Automotive [Member] | Off-Highway [Member]
Disaggregation of Revenue [Abstract]
Net sales	0.8	2.9	1.5	6.6
Automotive [Member] | Automotive and Light Vehicle [Member]
Disaggregation of Revenue [Abstract]
Net sales	97.6	104.7	152.0	207.1
Automotive [Member] | Other [Member]
Disaggregation of Revenue [Abstract]
Net sales	$ 7.7	$ 2.4	$ 12.6	$ 3.9