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Commitments and Contingencies (Details) - Unfavorable Regulatory Action [Member] € in Millions | Sep. 30, 2018 USD ($) Employees | Sep. 30, 2018 EUR (€) Employees | Dec. 31, 2000 assessment
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Raw Materials Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  | 2
Electricity Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  | 4
Raw Materials Assessment And Remaining Electricity Assessments [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Liability recorded | $ 0 |  |
Malaucene Co-Employment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Liability recorded | 0 |  |
Maximum [Member] | Raw Materials Assessment 2 [Member] [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | 10,700,000 |  |
Maximum [Member] | Electricity Assessment One [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | 5,000,000 |  |
Maximum [Member] | Second Electricity Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | 7,500,000 |  |
Maximum [Member] | Electricity Assessment Three [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | 500,000 |  |
Maximum [Member] | Electricity Assessment Four [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | $ 8,200,000 |  |
Maximum [Member] | Malaucene Co-Employment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss | € |  | € 1.3 |
Number of pending claims | Employees | 18 | 18 |

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- Definition The number of assessments from the tax authorities of the State of Rio de Janeiro for unpaid Imposto sobre circulacao de Mercadorias e Servicos (or ICMS) taxes, a form of value-added tax in Brazil. + References No definition available. + 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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