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Contingencies and Litigation (Details) BRL in Millions, $ in Millions | 12 Months Ended |
--- | --- | ---
Mar. 31, 2017 USD ($) Customer Site | Mar. 31, 2017 BRL Customer Site | Mar. 31, 2016 USD ($) Customer | Mar. 31, 2015 Customer | Mar. 31, 2016 BRL
Concentration Risk [Line Items] |  |  |  |  |
Number of major customers | 2 | 2 | 2 | 2 |
Number of top customers | 10 |  |  |  |
CADE [Member] |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |
Minimum period of alleged violations of antitrust regulations | 7 years | 7 years |  |  |
Litigation settlement amount | $ 4.7 | BRL 15.0 |  |  |
CADE [Member] | Minimum [Member] |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |
Brazil legal matter - accrual |  |  | $ 2.8 |  | BRL 10.0
CADE [Member] | SG&A Expenses [Member] |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |
Brazil legal matter - expense | 1.6 | BRL 5.0 |  |  |
Closed and Sold Manufacturing Facility [Member] |  |  |  |  |
Site Contingency [Line Items] |  |  |  |  |
Reserves for environmental matters | $ | $ 16.8 |  | $ 5.1 |  |
Closed and Sold Manufacturing Facility [Member] | United States [Member] |  |  |  |  |
Site Contingency [Line Items] |  |  |  |  |
Number of sites remediation considered for potentially responsible party | Site | 3 | 3 |  |  |
Customer Concentration Risk [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage | 54.00% | 54.00% | 63.00% | 63.00% |
Credit Concentration Risk [Member] |  |  |  |  |
Concentration Risk [Line Items] |  |  |  |  |
Concentration risk, percentage | 35.00% | 35.00% | 45.00% |  |

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