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Equity - Retained earnings additional information (Details) - EUR (€) € / shares in Units, shares in Thousands, € in Millions | 5 Months Ended | 12 Months Ended
--- | --- | ---
Oct. 13, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of equity [Line Items] |  |  |  |
Dividends recognised as distributions to owners | € 1,500 | € 2,668 | € 2,178 | € 1,288
Other cash distributions |  | 0 | 1,171 | 1,054
Purchased Share buyback programme |  | € 3,482 | € 1,721 | € 1,604
Authorised share capital, ordinary shares (in shares) |  | 9,142,000 | 9,142,000 | 14,729,000
Increased dividend percentage |  | 2.585% |  |
Cumulative preference shares |  |  |  |
Disclosure of equity [Line Items] |  |  |  |
Authorised share capital, ordinary shares (in shares) |  | 4,600,000 |  |
Par value (in eur per share) |  | € 0.01 |  |
ING Group |  |  |  |
Disclosure of equity [Line Items] |  |  |  |
Purchased Share buyback programme |  | € (3,217) | € (1,983) | € (140)

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