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Financial Instruments - Summary of credit risk of financial institution and government of cash, cash equivalents and financial investments (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Disclosure of external credit grades [line items]    
Counterparty credit rating R$ 8,031,684 R$ 7,170,563
AAA [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating 7,557,385 6,714,493
AA [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating 285,520 408,375
A [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating 3,668 464
Others [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating [1] R$ 185,111 R$ 47,231
[1] Refers substantially to investments as minority interest, which are classified as long-term investments.