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20. PROVISION FOR TAX, SOCIAL SECURITY, LABOR, CIVIL, ENVIRONMENTAL RISKS AND JUDICIAL DEPOSITS (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
ProvisionForTaxSocialSecurityLaborCivilEnvironmentalRisksAndJudicialDepositsLineItems [Line Items] |  |
Accrued liabilities | R$ 635,388 | R$ 623,247
Judicial deposits | 325,117 | 328,371
Accrued liabilities current | 81,073 | 96,479
Accrued liabilities non current | 554,315 | 526,768
Judicial deposits current |  |
Judicial deposits non current | 325,117 | 328,371
Tax [member] |  |
ProvisionForTaxSocialSecurityLaborCivilEnvironmentalRisksAndJudicialDepositsLineItems [Line Items] |  |
Accrued liabilities | 134,645 | 128,411
Judicial deposits | 2,444 | 31,060
Social security [member] |  |
ProvisionForTaxSocialSecurityLaborCivilEnvironmentalRisksAndJudicialDepositsLineItems [Line Items] |  |
Accrued liabilities | 8,170 | 7,039
Judicial deposits |  |
Labor [member] |  |
ProvisionForTaxSocialSecurityLaborCivilEnvironmentalRisksAndJudicialDepositsLineItems [Line Items] |  |
Accrued liabilities | 328,334 | 305,309
Judicial deposits | 212,737 | 227,213
Civil [member] |  |
ProvisionForTaxSocialSecurityLaborCivilEnvironmentalRisksAndJudicialDepositsLineItems [Line Items] |  |
Accrued liabilities | 151,776 | 138,990
Judicial deposits | 67,819 | 53,771
Environmental [member] |  |
ProvisionForTaxSocialSecurityLaborCivilEnvironmentalRisksAndJudicialDepositsLineItems [Line Items] |  |
Accrued liabilities | 12,463 | 43,498
Judicial deposits | 17,683 | 3,731
Deposit of a guarantee [member] |  |
ProvisionForTaxSocialSecurityLaborCivilEnvironmentalRisksAndJudicialDepositsLineItems [Line Items] |  |
Accrued liabilities |  |
Judicial deposits | R$ 24,434 | R$ 12,596

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- Definition The amount of liabilities to pay for goods or services that have been received or supplied but have not been paid, invoiced or formally agreed with the supplier, including amounts due to employees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of deposit liabilities from banks held by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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