Note 19 Secured tax assets (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Secured tax assets [Line Items] | |||
| Secured pensions tax assets | € 1,557 | € 1,622 | € 1,622 |
| Secured loss allowances tax assets | 6,328 | 6,357 | 6,912 |
| Total secured tax assets | € 7,885 | € 7,979 | € 8,534 |