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Shareholders' equity - Business Combinations (Details)
R$ in Thousands, $ in Millions
Dec. 31, 2024
BRL (R$)
Dec. 31, 2023
BRL (R$)
Mar. 04, 2023
BRL (R$)
Mar. 04, 2023
USD ($)
Disclosure of classes of share capital [line items]        
HPX Liabilities   R$ 285,206    
HPX net assets   R$ 373,153    
HPX Corporation [Member]        
Disclosure of classes of share capital [line items]        
Cost of shares issued R$ 146,741      
Fair value of Earn-out shares (44,240)      
Adjusted cost of shares issued to HPX shareholders 102,501      
HPX Assets 48,083      
HPX Liabilities 49,676      
HPX net assets     R$ (1,593)  
Stock listing expense R$ 100,909   R$ 100,900 $ 19.4