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Revenue Recognition, Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2021
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | $ 502.2 | $ 484.3 | $ 1,475.7 | $ 1,293.5 |
Contract Balances [Abstract] |  |  |  |  |
Contract assets | 18.0 |  | 18.0 |  | $ 5.7
Contract liabilities | 9.9 |  | 9.9 |  | 5.6
Increase in contract assets |  |  | 12.3 |  |
Increase in contract liabilities |  |  | 4.3 |  |
Products Transferred at a Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 489.8 | 480.6 | 1,444.5 | 1,274.2 |
Products Transferred Over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 22.6 | 17.5 | 68.8 | 52.3 |
Americas [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 267.1 | 234.5 | 772.3 | 617.9 |
Europe [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 184.1 | 192.5 | 563.4 | 513.3 |
Asia [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 61.2 | 71.1 | 177.6 | 195.3 |
Commercial HVAC&R [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 195.7 | 166.0 | 569.9 | 457.9 |
Data Center Cooling [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 24.2 | 12.6 | 59.7 | 46.7 |
Industrial Cooling [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 16.9 | 17.5 | 50.9 | 53.2 |
Commercial Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 80.8 | 72.5 | 244.6 | 186.2 |
Off-Highway [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 81.7 | 69.1 | 241.0 | 182.1 |
Automotive and Light Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 87.8 | 134.2 | 267.5 | 327.2 |
Liquid-Cooled Automotive Business [Member] | Held for Sale [Member] |  |  |  |  |
Contract Balances [Abstract] |  |  |  |  |
Contract assets |  |  |  |  | 7.1
Contract liabilities |  |  |  |  | $ 2.9
Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 25.3 | 26.2 | 79.7 | 73.2 |
Segment Total [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 512.4 | 498.1 | 1,513.3 | 1,326.5 |
BHVAC [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 90.6 | 73.7 | 234.7 | 196.3 |
BHVAC [Member] | Products Transferred at a Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 86.6 | 73.3 | 226.0 | 190.6 |
BHVAC [Member] | Products Transferred Over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 4.0 | 0.4 | 8.7 | 5.7 |
BHVAC [Member] | Americas [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 55.0 | 45.0 | 131.6 | 109.5 |
BHVAC [Member] | Europe [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 35.6 | 28.7 | 103.1 | 86.8 |
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 | 66.1 | 60.9 | 173.4 | 148.9 |
BHVAC [Member] | Data Center Cooling [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 24.2 | 12.6 | 59.7 | 46.7 |
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 | 0.3 | 0.2 | 1.6 | 0.7 |
CIS [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 148.6 | 124.9 | 456.2 | 369.6 |
CIS [Member] | Products Transferred at a Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 138.6 | 115.8 | 421.8 | 341.4 |
CIS [Member] | Products Transferred Over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 10.0 | 9.1 | 34.4 | 28.2 |
CIS [Member] | Americas [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 79.4 | 66.8 | 244.7 | 194.8 |
CIS [Member] | Europe [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 63.1 | 47.9 | 189.4 | 139.4 |
CIS [Member] | Asia [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 6.1 | 10.2 | 22.1 | 35.4 |
CIS [Member] | Commercial HVAC&R [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 129.6 | 105.1 | 396.5 | 309.0 |
CIS [Member] | Data Center Cooling [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 0.0 | 0.0 | 0.0 | 0.0 |
CIS [Member] | Industrial Cooling [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 16.9 | 17.5 | 50.9 | 53.2 |
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 | 2.1 | 2.3 | 8.8 | 7.4 |
HDE [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 200.8 | 185.6 | 598.4 | 474.7 |
HDE [Member] | Products Transferred at a Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 192.2 | 177.6 | 572.7 | 456.3 |
HDE [Member] | Products Transferred Over Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 8.6 | 8.0 | 25.7 | 18.4 |
HDE [Member] | Americas [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 124.7 | 107.9 | 371.0 | 274.4 |
HDE [Member] | Europe [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 36.2 | 35.0 | 112.8 | 91.2 |
HDE [Member] | Asia [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 39.9 | 42.7 | 114.6 | 109.1 |
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 | 77.7 | 67.0 | 233.8 | 174.8 |
HDE [Member] | Off-Highway [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 80.6 | 68.3 | 237.5 | 179.8 |
HDE [Member] | Automotive and Light Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 21.1 | 28.8 | 61.9 | 69.8 |
HDE [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 21.4 | 21.5 | 65.2 | 50.3 |
Automotive [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 72.4 | 113.9 | 224.0 | 285.9 |
Automotive [Member] | Products Transferred at a Point in Time [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 72.4 | 113.9 | 224.0 | 285.9 |
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 | 8.0 | 14.8 | 25.0 | 39.2 |
Automotive [Member] | Europe [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 49.2 | 80.9 | 158.1 | 195.9 |
Automotive [Member] | Asia [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 15.2 | 18.2 | 40.9 | 50.8 |
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 | 3.1 | 5.5 | 10.8 | 11.4 |
Automotive [Member] | Off-Highway [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 1.1 | 0.8 | 3.5 | 2.3 |
Automotive [Member] | Automotive and Light Vehicle [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | 66.7 | 105.4 | 205.6 | 257.4 |
Automotive [Member] | Other [Member] |  |  |  |  |
Disaggregation of Revenue [Abstract] |  |  |  |  |
Net sales | $ 1.5 | $ 2.2 | $ 4.1 | $ 14.8 |

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