Transfer of financial assets, assets pledged and received as collateral - Schedule of financial assets received as collateral (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| – equity securities | ||
| Financial assets received as collateral [Line Items] | ||
| Total received collateral available for sale or repledge at fair value | € 21,494 | € 22,815 |
| of which sold or repledged at fair value | 16,018 | 12,024 |
| – debt securities | ||
| Financial assets received as collateral [Line Items] | ||
| Total received collateral available for sale or repledge at fair value | 144,257 | 140,285 |
| of which sold or repledged at fair value | € 98,422 | € 90,708 |