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16 PROVISION FOR TAX, SOCIAL SECURITY, LABOR, CIVIL AND ENVIRONMENTAL RISKS AND JUDICIAL DEPOSITS (Details Narrative)
R$ in Thousands
 1 Months Ended 12 Months Ended
Dec. 23, 2019
BRL (R$)
Oct. 15, 2019
BRL (R$)
Dec. 27, 2018
BRL (R$)
Aug. 27, 2017
BRL (R$)
Apr. 08, 2013
BRL (R$)
Jan. 31, 2014
BRL (R$)
Dec. 31, 2019
BRL (R$)
Numnber
Dec. 31, 2018
BRL (R$)
Dec. 31, 2017
BRL (R$)
ProvisionForTaxSocialSecurityLaborCivilAndEnvironmentalRisksAndJudicialDepositsLineItems [Line Items]                  
Number of lawsuits defendant | Numnber             7,590    
Penalty fee       R$ 25,000          
Profit earned   R$ 1,000,000         R$ 2,244,511 R$ 5,200,583 R$ 111,229
Payment paid R$ 689,000                
Municipality of Volta Redonda [Member]                  
ProvisionForTaxSocialSecurityLaborCivilAndEnvironmentalRisksAndJudicialDepositsLineItems [Line Items]                  
Penalty fee         R$ 35,000        
Agreement [Member]                  
ProvisionForTaxSocialSecurityLaborCivilAndEnvironmentalRisksAndJudicialDepositsLineItems [Line Items]                  
Addition investment amount     R$ 21,000            
Description of service allocated     30% of this amount being allocated to services of environmental interest, preservation works, improvement and recovery of the quality of the environment of Volta Redonda.            
INEA [Member]                  
ProvisionForTaxSocialSecurityLaborCivilAndEnvironmentalRisksAndJudicialDepositsLineItems [Line Items]                  
Penalty fee           R$ 35,000