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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
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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.

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- Definition The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents] + References No definition available. + Details
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