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Investments in associates and joint ventures (Details 5) - Principal Jointly Controlled Entities Banco Rci Brasil [Member] - BRL (R$) R$ in Thousands | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
IfrsStatementLineItems [Line Items] |  |
Assets | R$ 13,984,420 | R$ 12,276,584
Liabilities | (12,767,790) | (10,782,915)
Cash and Cash Equivalents | 350,232 | 336,955
Depreciation and amortization | (2,080) | (1,937)
Income | 680,804 | 772,324
Interest income | 2,164,109 | 1,891,374
Interest expenses | (1,483,305) | (1,119,050)
Income / (Expense) from Income Tax | (260,142) | (139,420)
Current Liabilities (excluding Trading, Other Liabilities, and Provisions) | (5,161,615) | (4,698,162)
Non-Current Liabilities (excluding Trading, Other Liabilities, and Provisions) | R$ (7,606,175) | R$ (6,084,753)

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