Insurance contracts linked to pensions (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|---|---|---|---|
| Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items] | |||
| Insurance contracts that are assets | € 67 | € 81 | € 93 |
| Banco Santander, S.A. | |||
| Disclosure of reconciliation of changes in insurance contracts by remaining coverage and incurred claims [line items] | |||
| Insurance contracts that are assets | € 67 | € 81 | € 93 |