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Segment and Geographic Information, Property, Plant and Equipment by Geographical Area (Details) - USD ($) $ in Millions | Mar. 31, 2021 | Mar. 31, 2020
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Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment | [1] | $ 269.9 | $ 448.0
Reportable Geographical Components [Member] | United States [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | 80.3 | 114.6
Reportable Geographical Components [Member] | Mexico [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | 43.5 | 50.0
Reportable Geographical Components [Member] | China [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | 31.3 | 56.8
Reportable Geographical Components [Member] | Italy [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | 30.0 | 49.8
Reportable Geographical Components [Member] | Hungary [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | 27.6 | 55.4
Reportable Geographical Components [Member] | Germany [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | 1.8 | 27.0
Reportable Geographical Components [Member] | Austria [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | 0.0 | 26.0
Reportable Geographical Components [Member] | Other [Member] |  |  |
Segment and Geographic Information [Abstract] |  |  |
Property, plant and equipment |  | $ 55.4 | $ 68.4
[1] | In connection with the pending sales of the liquid- and air-cooled automotive businesses within the Automotive segment, the Company wrote-down the carrying value of the disposal groups’ property, plant and equipment to zero as of March 31, 2021. The assets impaired were located in Hungary, Germany, Austria, China, the U.S., Italy, and the Netherlands. See Note 2 for additional information on the held for sale businesses and impairment charges recorded during fiscal 2021.

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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(14)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(8)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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