Deposits from banks - Schedule of deposits from banks by type (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of deposits from banks [Line Items] | ||
| Non-interest bearing | € 117 | € 171 |
| Interest bearing | 18,400 | 16,553 |
| Deposits from banks | 18,517 | 16,723 |
| Netherlands | ||
| Disclosure of deposits from banks [Line Items] | ||
| Non-interest bearing | 2 | 5 |
| Interest bearing | 6,438 | 5,845 |
| Deposits from banks | 6,440 | 5,850 |
| Rest of the world | ||
| Disclosure of deposits from banks [Line Items] | ||
| Non-interest bearing | 115 | 166 |
| Interest bearing | 11,962 | 10,707 |
| Deposits from banks | € 12,077 | € 10,873 |