Other operating expenses - Additional information (Details) - EUR (€) € in Millions |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Disclosure Of Other Operating Expense [Line Items] | |||
| Contributions to the Single and Local Resolution Funds | € 58 | € 41 | |
| Increase (decrease) in local bank taxes | 58 | ||
| Local bank taxes | 319 | € 261 | |
| Germany, Belgium, Poland | |||
| Disclosure Of Other Operating Expense [Line Items] | |||
| Contributions to the deposit guarantee schemes | € 25 | € 136 | |