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v2.4.1.9

Contingencies and Litigation (Details) In Millions, unless otherwise specified | 12 Months Ended |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Mar. 31, 2015 USD ($) Customer Site | Mar. 31, 2014 USD ($) Customer | Mar. 31, 2013 USD ($) Customer | Mar. 31, 2015 BRL | Mar. 31, 2012 USD ($) | Mar. 31, 2015 Customer Concentration Risk [Member] | Mar. 31, 2014 Customer Concentration Risk [Member] | Mar. 31, 2013 Customer Concentration Risk [Member] | Mar. 31, 2015 Credit Concentration Risk [Member] | Mar. 31, 2014 Credit Concentration Risk [Member]
Concentration Risk [Line Items] |  |  |  |  |  |  |  |  |  |
Number of major customers | 2 mod_EntityWideRevenueNumberOfMajorCustomers | 1 mod_EntityWideRevenueNumberOfMajorCustomers | 1 mod_EntityWideRevenueNumberOfMajorCustomers |  |  |  |  |  |  |
Concentration risk, percentage (in hundredths) |  |  |  |  |  | 63.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 56.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 59.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember | 47.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember | 46.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember
Number of top customers | 10 mod_NumberOfTopCustomers |  |  |  |  |  |  |  |  |
European value added tax [Abstract] |  |  |  |  |  |  |  |  |  |
Value added tax payable |  |  |  |  | $ 10.7 us-gaap_SalesAndExciseTaxPayableCurrentAndNoncurrent |  |  |  |  |
Reduction to selling general and administrative expense | 2.0 mod_ReductionToSellingGeneralAndAdministrativeExpense | 2.9 mod_ReductionToSellingGeneralAndAdministrativeExpense | 1.6 mod_ReductionToSellingGeneralAndAdministrativeExpense |  |  |  |  |  |  |
Environmental Matters [Abstract] |  |  |  |  |  |  |  |  |  |
Number of sites remediation considered for potentially responsible party | 3 mod_NumberOfSitesRemediationConsideredForPotentiallyResponsibleParty |  |  |  |  |  |  |  |  |
Reserves for environmental matters | 3.8 us-gaap_LossContingencyEstimateOfPossibleLoss | 5.1 us-gaap_LossContingencyEstimateOfPossibleLoss |  |  |  |  |  |  |  |
Legal Matters [Abstract] |  |  |  |  |  |  |  |  |  |
Brazil legal matter | $ 3.2 us-gaap_LossContingencyRangeOfPossibleLossMinimum |  |  | 10.0 us-gaap_LossContingencyRangeOfPossibleLossMinimum |  |  |  |  |  |

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- Definition Number of sites for which United States Environmental Protection Agency ("USEPA") has designated the entity as a potentially responsible party ("PRP") for remediation. + References No definition available. + Details
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