Risk Report - Asset Quality - Collateral Obtained (Detail: Text Values) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Asset Quality [Abstract] | ||
| Carrying amount of foreclosed residential real estate properties | € 19 | € 17 |
| Collateral obtained during the reporting period | 49 | 254 |
| Collateral on consolidating securitization trusts | € 47 | € 47 |