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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$) | Jun. 30, 2018 USD ($)
--- | --- | --- | --- | --- | --- | ---
Income Tax Examination [Line Items] |  |  |  |  |  |
Accrued estimated losses |  |  |  |  |  | $ 0.2
Brazilian Federal Tax Authorities [Member] |  |  |  |  |  |
Income Tax Examination [Line Items] |  |  |  |  |  |
Assessments sought again entity | $ 5.3 | $ 8.6 | R$ 33.3 | $ 3.7 | R$ 14.4 |
Reduction in principal, penalties and interest (percent) | 38.00% |  |  |  |  |

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