Note 37 Interest expense breakdown by origin (Details) - EUR (€) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Interest expense by origin [Line Items] | |||
| Interest expense on financial liabilities designated at fair value through profit or loss | € 4,392,000,000 | € 5,633,000,000 | € 3,979,000,000 |
| Interest Expense For Financial Liabilities Measured At Amortised Cost | 26,182,000,000 | 28,506,000,000 | 19,276,000,000 |
| Interest Expense For Adjustment Interest On Accounting Coverage | 388,000,000 | 1,097,000,000 | 809,000,000 |
| Interest Expense On Chargeable Cost To Pension Funds | 234,000,000 | 228,000,000 | 174,000,000 |
| Other Interest Expense | 869,000,000 | 929,000,000 | 523,000,000 |
| Interest expense | 32,065,000,000 | 36,392,000,000 | 24,761,000,000 |
| Interest Expense For Insurance Activity | € 979,000,000 | € 1,016,000,000 | € 633,000,000 |