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Taxes (Details 4) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Notes and other explanatory information [abstract]    
Financial liabilities, beginning R$ 1,995,158 R$ 3,326,795
Monetary variation 199,241 261,463
Financial liabilities transfer to sectorial financial liabilities (1,462,673) (1,593,100)
Financial liabilities, ending 731,726 R$ 1,995,158
Financial liabilities, current 558,591  
Financial liabilities, Noncurrent R$ 173,135