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Segments - Additional information (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of operating segments [line items] |  |  |
Total income | € 21,087 | € 18,121 | € 30,418
Impairments | 35 | 5 | 192
Net Results IFRS-EU | Segments banking activities |  |  |
Disclosure of operating segments [line items] |  |  |
Total income | 22,615 | 22,575 | 18,561
Operating expenses | 12,121 | 11,564 | 11,199
Net Results IFRS-EU | Segments banking activities | Corporate Line |  |  |
Disclosure of operating segments [line items] |  |  |
Total income | 378 | 450 | 84
Hyperinflationary accounting, income | (117) | (179) |
Total income excl hyperinflationary impacts | 134 |  |
Impairments | 53 |  |
Operating expenses | € 533 | 542 | € 535
Decrease in operating expenses (in percent) | 1.70% |  |
Hyperinflationary accounting, net profit (loss) | € 35 | 48 |
Hyperinflation impact, restructuring costs | 25 |  |
Hyperinflation impact, one-off CLA payment to staff | 22 |  |
Provision for hyperinflationary impact | € 21 | € 51 |

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