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Taxes (Details 5) - BRL (R$)
R$ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2022
Jun. 30, 2022
Dec. 31, 2023
Notes and other explanatory information [abstract]      
Provision, beginning R$ 1,821,933 R$ 1,851,257
Provision for allocation of PIS and Cofins credits   810,563  
Monetary variation 29,324 1,011,370 58,518
Provision, ending R$ 1,851,257 R$ 1,821,933 R$ 1,909,775