Related parties - Narrative (Details) - BRL (R$) R$ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Notes and other explanatory information [abstract] | |||
| Assets | R$ 213 | R$ 191 | |
| Liability | (11,290) | (7,641) | |
| Expense | R$ (44) | R$ (19) | R$ (62) |