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Segment and Geographic Information, Property, Plant and Equipment by Geographical Area (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment | [1] | $ 315.4 | $ 269.9 |
Impairment charges (reversals) - net |  | (55.7) | 166.8 | $ 8.6
Liquid-Cooled Automotive Business [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Impairment charges (reversals) - net |  | (56.0) |  |
Reportable Geographical Component [Member] | United States [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment |  | 83.6 | 80.3 |
Reportable Geographical Component [Member] | China [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment |  | 45.6 | 31.3 |
Reportable Geographical Component [Member] | Hungary [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment |  | 44.0 | 27.6 |
Reportable Geographical Component [Member] | Mexico [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment |  | 38.5 | 43.5 |
Reportable Geographical Component [Member] | Italy [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment |  | 33.2 | 30.0 |
Reportable Geographical Component [Member] | Germany [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment |  | 12.5 | 1.8 |
Reportable Geographical Component [Member] | Other [Member] |  |  |  |
Segment and Geographic Information [Abstract] |  |  |  |
Property, plant and equipment |  | $ 58.0 | $ 55.4 |
[1] | As of March 31, 2021, the Company had written-down the carrying value of held for sale property, plant and equipment within the liquid-cooled automotive business to zero. During fiscal 2022, the business no longer met the requirements to be classified as held for sale. As a result, the Company remeasured its long-lived assets to the lower of carrying value or fair value and recorded net impairment reversals totaling $56.0 million during fiscal 2022. The assets within the liquid-cooled automotive business are located in Hungary, Germany, China, the U.S., Italy, and the Netherlands. See Note 2 for additional information.

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