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Subordinated loans - Schedule of subordinated loans by group companies (Details) - Subordinated loans - EUR (€) € in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Disclosure of detailed information about borrowings [line items] |  |
Opening balance as at 1 January | € 17,878 | € 15,401
Changes in liabilities arising from financing activities [abstract] |  |
Additions | 1,232 | 4,603
Redemptions / Disposals | (1,818) | (2,931)
Amortisation | 11 | 28
Other | (7) | 24
Changes in unrealised revaluations | 270 | 188
Foreign exchange movement | (1,000) | 565
Closing balance | € 16,566 | € 17,878

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