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19 Payroll, Social Charges and Accruals (Tables)
 12 Months Ended
Dec. 31, 2020
Payroll Social Charges And Accruals [Abstract]  
Schedule of payroll social charges and accruals
  12.31.2020 12.31.2019
Social security liabilities    
Taxes and social contribution   42,748  47,022
Social security charges on paid vacation and 13th salary  29,742  29,182
   72,490  76,204
Labor liabilities    
Payroll, net -  3,330
Vacation and 13th salary  100,175  98,648
Provisons by performance andprofit sharing  483,110 156,040
Voluntary retirement program  28,071  2,820
Other liabilities 200  2
   611,556 260,840
   684,046 337,044