Risk management - Most important foreign exchange year-end trading positions (Details) - Foreign exchange - Trading portfolios, netting - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| US Dollar | ||
| Market Risk [Line Items] | ||
| Reportable ECL | € (260) | € (93) |
| Turkish Lira | ||
| Market Risk [Line Items] | ||
| Reportable ECL | 229 | 84 |
| Chinese Yuan | ||
| Market Risk [Line Items] | ||
| Reportable ECL | 88 | (37) |
| Korean Won | ||
| Market Risk [Line Items] | ||
| Reportable ECL | 62 | |
| Japanese Yen | ||
| Market Risk [Line Items] | ||
| Reportable ECL | (49) | € 61 |
| Romanian Leu | ||
| Market Risk [Line Items] | ||
| Reportable ECL | € 42 |