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Risks and 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, 2023
Dec. 31, 2022
Disclosure of external credit grades [line items]    
Counterparty credit rating R$ 7,170,563 R$ 6,584,962
AAA [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating 6,714,493 5,720,996
AA [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating 408,375 809,583
A [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating 464 3,457
Others [member]    
Disclosure of external credit grades [line items]    
Counterparty credit rating [1] R$ 47,231 R$ 50,926
[1] Refers substantially to investments as minority interest, which are classified as long term investments.