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Borrowing and onlending (Details) - BRL (R$) R$ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Disclosure of detailed information about borrowings [line items] |  |
Borrowing and onlending | R$ 25,071 | R$ 27,405
Caixa Economica Federal | Minimum |  |
Disclosure of detailed information about borrowings [line items] |  |
Interest rate | 4.50% |
Caixa Economica Federal | Maximum |  |
Disclosure of detailed information about borrowings [line items] |  |
Interest rate | 6.00% |

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