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Related parties (Details Narrative) - BRL (R$)
R$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2020
Dec. 31, 2021
Related Parties      
Assets R$ 162 R$ 20 R$ 100
Liability 6,427   R$ 6,136
Expense R$ 16 R$ 58