Net interest income - Additional information (Details) - EUR (€) € in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Net Interest Income Disclosure [Line Items] | |||
| Interest paid, TLTRO III | € 12,843 | € 15,105 | € 11,940 |
| TLTRO III | |||
| Net Interest Income Disclosure [Line Items] | |||
| Interest paid, TLTRO III | 59 | 557 | |
| EU IAS 39 carve-out | |||
| Net Interest Income Disclosure [Line Items] | |||
| Increase (decrease) of net interest income | 276 | € 265 | € 187 |
| Without EU IAS 39 carve-out | |||
| Net Interest Income Disclosure [Line Items] | |||
| Increase (decrease) of net interest income | € 342 | ||