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Schedule of commitment for purchase goods and services (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
IfrsStatementLineItems [Line Items]      
Borrowings R$ 25,456,030 R$ 22,404,426 R$ 18,620,279
Mortgage guarantees 20,343 44,816  
Related To F I N A M E [Member]      
IfrsStatementLineItems [Line Items]      
Mortgage guarantees 16,742  
Related To Tax Incentives And Other [Member]      
IfrsStatementLineItems [Line Items]      
Mortgage guarantees R$ 3,601 R$ 44,816