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Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Consolidation principles [Abstract] |  |  |
Investments in non-consolidated affiliated companies | 20.00% |  |
Shipping and handling costs [Abstract] |  |  |
Shipping and handling costs | $ 2.5 | $ 4.9 | $ 4.0
Research and development [Abstract] |  |  |
Research and development cost | 61.1 | 62.0 | 61.7
Short-term investments [Abstract] |  |  |
Short-term investments | 3.3 | 2.8 |
Trade accounts receivable [Abstract] |  |  |
Trade receivables, allowance for doubtful accounts | 0.5 | 1.0 |
Trade receivables sold without recourse | 71.3 | 87.0 | 82.4
Loss on the sale of accounts receivables | (0.3) | (0.3) | (0.3)
Goodwill impaired [Abstract] |  |  |
Goodwill impairment charges |  | (7.8) |
New accounting guidance [Abstract] |  |  |
Deferred income taxes | 123.1 | 115.4 |
Supplemental cash flow information [Abstract] |  |  |
Interest paid | 10.7 | 10.3 | 12.6
Income taxes paid | $ 10.1 | 15.9 | $ 11.4
Tools [Member] |  |  |
Tooling [Abstract] |  |  |
Property, plant and equipment, depreciable lives | 3 years |  |
Company-owned tooling, net | $ 18.8 | 18.7 |
Customer owned tooling receivable | $ 8.5 | 11.6 |
New Accounting Pronouncement, Early Adoption, Effect [Member] |  |  |
New accounting guidance [Abstract] |  |  |
Deferred income taxes |  | 13.0 |
Electronics Cooling Business [Member] |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Final payment on promissory note |  | 1.5 |
Gain on sale (Pre-tax) |  | 0.9 |
Gain on sale (After-tax) |  | $ 0.6 |

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