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Equity - Summary of equity (Details) - EUR (€) € in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Share capital and share premium |  |  |  |
Share capital | € 31 | € 35 | € 37 | € 39
Share premium | 17,116 | 17,116 | 17,116 | 17,105
Total share capital and share premium | 17,148 | 17,151 | 17,154 |
Other reserves |  |  |  |
Reserve of cash flow hedges | (1,693) | (2,058) | (3,055) |
Revaluation reserves credit liability | (15) | 31 | 70 |
Revaluation reserve: Property in own use | 161 | 178 | 176 |
Net defined benefit asset/liability remeasurement reserve | (333) | (317) | (232) |
Currency translation reserve | (1,986) | (2,527) | (2,395) |
Share of associates and joint ventures and other | 2,607 | 3,047 | 3,603 |
Treasury shares | (765) | (1,994) | (1,205) | (1,612)
Other reserves | (687) | (2,767) | (2,192) |
Retained earnings | 36,243 | 40,299 | 41,538 |
Shareholders’ equity (parent) | 52,703 | 54,684 | 56,500 |
Non-controlling interests | 995 | 944 | 504 |
Total equity | 53,698 | 55,628 | 57,004 | € 52,802
Equity securities at FVOCI |  |  |  |
Other reserves |  |  |  |
Revaluation reserve: equity securities at FVOCI | 1,816 | 1,152 | 1,187 |
Revaluation reserve: debt instruments at FVOCI | 1,816 | 1,152 | 1,187 |
Debt instruments at FVOCI |  |  |  |
Other reserves |  |  |  |
Revaluation reserve: equity securities at FVOCI | (479) | (280) | (341) |
Revaluation reserve: debt instruments at FVOCI | € (479) | € (280) | € (341) |

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