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Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Goodwill [Roll Forward] |  |  |
Beginning balance |  | $ 165.1 | $ 15.8
Acquired goodwill | [1] | 1.3 | 150.6
Effect of exchange rate changes |  | 7.4 | (1.3)
Ending balance |  | 173.8 | 165.1
Asia [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance |  | 0.5 | 0.5
Acquired goodwill | [1] | 0.0 | 0.0
Effect of exchange rate changes |  | 0.0 | 0.0
Ending balance |  | 0.5 | 0.5
BHVAC [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance |  | 13.7 | 15.3
Acquired goodwill | [1] | 0.0 | 0.0
Effect of exchange rate changes |  | 1.3 | (1.6)
Ending balance |  | 15.0 | 13.7
CIS [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Beginning balance |  | 150.9 | 0.0
Acquired goodwill | [1] | 1.3 | 150.6
Effect of exchange rate changes |  | 6.1 | 0.3
Ending balance |  | 158.3 | 150.9
Americas [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Accumulated impairment losses |  | 31.6 | 31.6
Europe [Member] |  |  |
Goodwill [Roll Forward] |  |  |
Accumulated impairment losses |  | $ 8.7 | $ 8.7
[1] | See Note 2 for additional information about the goodwill recorded as a result of the acquisition of Luvata HTS.

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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