Note 14 Loans and advances maturing in more than one year by fixed interest rate and floating (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Loans and advances maturing in more than one year by interest rate [Line Items] | |||
| National security | € 136,454 | € 129,642 | € 129,248 |
| Foreign security | 177,757 | 150,966 | 139,104 |
| Total loans and advances maturing in more than one year | 314,211 | 280,608 | 268,352 |
| Fixed interest rate [member] | |||
| Loans and advances maturing in more than one year by interest rate [Line Items] | |||
| National security | 76,871 | 67,284 | 63,060 |
| Foreign security | 95,806 | 85,473 | 77,381 |
| Total loans and advances maturing in more than one year | 172,677 | 152,757 | 140,441 |
| Floating interest rate [member] | |||
| Loans and advances maturing in more than one year by interest rate [Line Items] | |||
| National security | 59,584 | 62,359 | 66,188 |
| Foreign security | 81,950 | 65,493 | 61,723 |
| Total loans and advances maturing in more than one year | € 141,534 | € 127,851 | € 127,911 |