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18. INCOME TAX AND SOCIAL CONTRIBUTION (Details Narrative) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
IncomeTaxAndSocialContributionLineItems [Line Items]    
Profit generated by foreign subsidiaries R$ 1,284,483  
Income tax and social contribution 412,420  
Tax losses carryforward 1,681,000 R$ 1,466,000
Negative base of social contribution 627,000 R$ 550,000
Reversed of estimated losses 1,369,000  
Deferred tax asset R$ 4,628,000  
Top of range [member]    
IncomeTaxAndSocialContributionLineItems [Line Items]    
Tax credits maturity terms 10 years