Derivatives - Schedule of Notional Amount Of Credit Derivatives Purchased (Details) - BRL (R$) R$ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of detailed information about financial instruments [line items] | ||
| Received risk | R$ (87,134) | R$ (73,103) |
| Transferred risk | 28,138 | 27,708 |
| Net risk | (58,996) | (45,395) |
| CDS | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Received risk | (34,561) | (37,066) |
| Transferred risk | 28,138 | 27,708 |
| Net risk | (6,423) | (9,358) |
| TRS | ||
| Disclosure of detailed information about financial instruments [line items] | ||
| Received risk | (52,573) | (36,037) |
| Net risk | R$ (52,573) | R$ (36,037) |