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Commitments and Contingencies (Details) - Unfavorable Regulatory Action [Member] $ in Millions | Sep. 30, 2015 USD ($) | Dec. 31, 2013 assessment | Dec. 31, 2000 assessment
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Raw Materials Assessment 2 [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss, maximum | $ 10.0 |  |
Raw Materials Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of assessments from the tax authorities regarding ICMS taxes | assessment |  |  | 2
Number of tax assessments related to periods that predated acquisition and are covered by indemnification | assessment |  |  | 1
Number of assessments from the tax authorities regarding electricity taxes | assessment |  | 3 |
Raw Materials Assessment 1 [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss, maximum | 16.0 |  |
Portion covered by indemnification | 12.0 |  |
Second Electricity Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss, maximum | 6.0 |  |
Electricity Assessment One [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss, maximum | 3.0 |  |
Third Electricity Assessment [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, range of possible loss, maximum | $ 3.0 |  |

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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 Number of the tax assessments by the State of Rio de Janeiro that are for periods prior to the acquisition of Pirahy and are covered, in part, by an indemnification from the sellers. + References No definition available. + Details
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- Definition Number of assessments from the tax authorities regarding electricity taxes + References No definition available. + Details
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- Definition The portion of the estimated loss that is covered by the indemnification of the prior owners as part of the purchase. + References No definition available. + Details
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- Definition The estimated maximum amount of possible loss from the contingency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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