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Equity share capital (Details) - EUR (€) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Movements of share capital [Line Items] |  |  |
Scrip dividend | € 130,000,000 | € 136,000,000 | € 132,000,000
Reduction of issued capital | 200,000 |  |
Issued capital [member] |  |  |
Movements of share capital [Line Items] |  |  |
Scrip dividend | € 0 | € 0 | € (3,000,000)
Ordinary shares [member] | Issued capital [member] |  |  |
Movements of share capital [Line Items] |  |  |
Number of shares outstanding |  | 740,688,365 | 727,443,261
Scrip dividend number of shares | 12,122,194 | 13,245,104 |
Reduction of share capital number of shares | (23,250,608) | 0 |
Issued capital |  | € 7,406,884 | € 7,274,433
Scrip dividend | € 121,222 | 132,451 |
Reduction of issued capital | € (232,506) | € 0 |
Ordinary shares [member] | Share capital [Member] |  |  |
Movements of share capital [Line Items] |  |  |
Number of shares outstanding | 729,559,951 | 740,688,365 |
Issued capital | € 7,295,600 | € 7,406,884 |

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