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Legal Proceedings (Details) R$ in Millions, $ in Millions | Mar. 22, 2018 USD ($) | Feb. 25, 2015 USD ($) | Feb. 25, 2015 BRL (R$) | Jan. 13, 2015 USD ($) | Jan. 13, 2015 BRL (R$)
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Loss Contingency [Abstract] |  |  |  |  |
Assessments sought again entity | R$ |  |  | R$ 33.3 |  | R$ 14.4
Brazilian Federal Tax Authorities |  |  |  |  |
Loss Contingency [Abstract] |  |  |  |  |
Assessments sought again entity | $ 5.3 |  |  |  |
Reduction in principal, penalties and interest (percent) | 38.00% |  |  |  |
Pending Litigation | Brazilian Federal Tax Authorities |  |  |  |  |
Loss Contingency [Abstract] |  |  |  |  |
Assessments sought again entity |  | $ 8.6 |  | $ 3.7 |

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