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Equity - Hyperinflation additional information (Details) - EUR (€) € in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of equity [Line Items] |  |  |  |
Total equity | € 55,628 | € 57,004 | € 52,802 | € 52,640
Currency translation reserve | (2,527) | (2,395) | (3,483) |
Retained earnings | 40,299 | 41,538 | 35,462 |
Shareholders' equity (parent) |  |  |  |
Disclosure of equity [Line Items] |  |  |  |
Total equity | 54,684 | 56,500 | € 52,066 | € 51,619
Opening balance after adjustment, cumulative effect at date of initial application | IAS 29 |  |  |  |
Disclosure of equity [Line Items] |  |  |  |
Total equity | 54 | 100 |  |
Currency translation reserve | 284 | 1,011 |  |
Retained earnings | 0 | (563) |  |
Other reserves | 3 | (17) |  |
Net result (before non-controlling interests) | € (234) | (331) |  |
Opening balance after adjustment, cumulative effect at date of initial application | IAS 29 | Shareholders' equity (parent) |  |  |  |
Disclosure of equity [Line Items] |  |  |  |
Total equity |  | € 64 |  |

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