Shareholders’ equity (Details Narrative) - BRL (R$) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Apr. 26, 2024 |
|
| Shareholders Equity | |||
| Share issued | 9,090,909,090 | ||
| Share capital amount | R$ 10,000,000,000 | ||
| Increase in share capital amount | R$ 65,000,000,000 | ||
| Description of buyback program | The Buyback Program covers the acquisition of up to 36,205,005 Units, representing 36,205,005 common shares and 36,205,005 preferred shares, which corresponded, on December 31, 2025, to approximately 1% of the Bank's share capital. On December 31, 2025, Banco Santander had 356,245,448 common shares and 384,049,858 preferred shares outstanding. | ||
| Gain (loss) on sold of treasury shares | R$ 22,106,000 | R$ 25,163,000 | |