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Segment information (Details 2) - Corporate [Member] - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
IfrsStatementLineItems [Line Items]      
Total R$ 90,290 R$ (627,874) R$ 90,405
Results With Sale And Disposal Of Fixed Assets [Member]      
IfrsStatementLineItems [Line Items]      
Total 86,475 3,582 65,884
Reversal Provision For Tax And Civil Contingencies [Member]      
IfrsStatementLineItems [Line Items]      
Total 21,707 (50,397) 30,587
Gain Losses With Demobilization [Member]      
IfrsStatementLineItems [Line Items]      
Total (277) 1,398 (6,814)
Investigations Involving The Company [Member]      
IfrsStatementLineItems [Line Items]      
Total (1,111) (588,774) (9,003)
Result In The Sale Of Investment [Member]      
IfrsStatementLineItems [Line Items]      
Total 76,148
Others [Member]      
IfrsStatementLineItems [Line Items]      
Total R$ (16,504) R$ 6,317 R$ (66,397)