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Derivative Instruments, (Gain) Loss by Hedging Relationship, by Income Statement Location (Details) - USD ($) $ in Millions | 12 Months Ended
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Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
Derivative Instruments, (Gain) Loss [Line Items] |  |  |
Total gain (loss) recognized in continuing operations | $ 1.8 | $ (0.1) | $ (1.3)
Cost of Sales [Member] | Commodity Derivatives [Member] |  |  |
Derivative Instruments, (Gain) Loss [Line Items] |  |  |
Total gain (loss) recognized in continuing operations | 0.5 | (0.7) | (0.2)
Other Income (Expense) - Net [Member] | Foreign Exchange Contracts [Member] |  |  |
Derivative Instruments, (Gain) Loss [Line Items] |  |  |
Total gain (loss) recognized in continuing operations | $ 1.3 | $ 0.6 | $ (1.1)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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