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Debt securities in issue (Tables) | 6 Months Ended
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Jun. 30, 2025
Debt Securities in Issue [Abstract] |
Summary of maturities of debt securities in issue |
Changes in debt securities in issue
in EUR million | 30 June 2025 | 31 December 2024
Opening balance as at 1 January | 142,367 |  | 124,670 |
Additions | 80,301 |  | 124,701 |
Redemptions / Disposals | -65,413 |  | -113,014 |
Amortisation | 357 |  | 1,098 |
Other | -149 |  | 261 |
Changes in unrealised revaluations | 472 |  | 1,139 |
Foreign exchange movement | -6,919 |  | 3,512 |
Closing balance | 151,016 |  | 142,367 |

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