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Cash and cash equivalents (Details) - BRL (R$)
R$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
IfrsStatementLineItems [Line Items]    
Cash and bank accounts R$ 1,607,257 R$ 1,865,077
Cash equivalents 9,264,664 8,130,929
Brazilian Reais [Member]    
IfrsStatementLineItems [Line Items]    
Cash and bank accounts 160,310 154,399
Cash equivalents R$ 4,881,537 3,757,694
Brazilian Reais [Member] | Investment funds [member]    
IfrsStatementLineItems [Line Items]    
Average rate 11.65%  
Cash equivalents R$ 4,676 3,492
Brazilian Reais [Member] | Bank deposit certificates [Member]    
IfrsStatementLineItems [Line Items]    
Average rate 11.89%  
Cash equivalents R$ 4,876,861 3,754,202
Saudi Arabia, Riyals    
IfrsStatementLineItems [Line Items]    
Cash and bank accounts 307,151 307,440
United States of America, Dollars    
IfrsStatementLineItems [Line Items]    
Cash and bank accounts R$ 768,868 946,999
United States of America, Dollars | Term Deposit [Member]    
IfrsStatementLineItems [Line Items]    
Average rate 5.82%  
Cash equivalents R$ 2,069,531 2,469,028
United States of America, Dollars | Overnight [Member]    
IfrsStatementLineItems [Line Items]    
Average rate 1.74%  
Cash equivalents R$ 17,570 12,720
Euro Member Countries, Euro    
IfrsStatementLineItems [Line Items]    
Cash and bank accounts 24,506 93,321
Turkey, New Lira    
IfrsStatementLineItems [Line Items]    
Cash and bank accounts 93,641 83,339
Others Currencies [Member]    
IfrsStatementLineItems [Line Items]    
Cash and bank accounts 252,781 279,579
Cash equivalents R$ 2,775,870 2,508,158
Others Currencies [Member] | Term Deposit [Member]    
IfrsStatementLineItems [Line Items]    
Average rate 6.15%  
Cash equivalents R$ 612,110
Others Currencies [Member] | Term Deposit One [Member]    
IfrsStatementLineItems [Line Items]    
Cash equivalents R$ 76,659 R$ 26,410