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18. Taxes recoverable/payable (Details 1) - BRL (R$) R$ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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SummaryOfTaxesRecoverablePayableLineItems [Line Items] |  |
Current tax liabilities | R$ 200,563 | R$ 183,965
Cofins and Pasep |  |
SummaryOfTaxesRecoverablePayableLineItems [Line Items] |  |
Current tax liabilities | 82,381 | 74,034
INSS (Social Security contribution) |  |
SummaryOfTaxesRecoverablePayableLineItems [Line Items] |  |
Current tax liabilities | 38,871 | 35,365
IRRF (Withholding income tax on financial investments) |  |
SummaryOfTaxesRecoverablePayableLineItems [Line Items] |  |
Current tax liabilities | 66,825 | 58,204
Other |  |
SummaryOfTaxesRecoverablePayableLineItems [Line Items] |  |
Current tax liabilities | R$ 12,486 | R$ 16,362

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- Definition The amount of payment due on social security and taxes other than income tax. Income taxes include all domestic and foreign taxes that are based on taxable profits. Income taxes also include taxes, such as withholding taxes, that are payable by a subsidiary, associate or joint arrangement on distributions to the reporting entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 78 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_78&doctype=Standard -URIDate 2018-03-16 + Details
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