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Segment and Geographic Information, Net sales by End Market (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
Revenue from External Customer [Line Items] |  |  |
Net sales | $ 1,503.0 | $ 1,352.5 | $ 1,496.4
Automotive [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Net sales | 461.0 | 396.8 | 401.8
Commercial Vehicle [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Net sales | 382.5 | 459.8 | 512.5
Off-Highway [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Net sales | 202.8 | 206.2 | 274.6
HVAC&R [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Net sales | 400.9 | 232.1 | 229.6
Other [Member] |  |  |
Revenue from External Customer [Line Items] |  |  |
Net sales | $ 55.8 | $ 57.6 | $ 77.9

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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