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Equity - Schedule of changes in currency translation reserve (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of equity [Line Items] |  |  |
Opening balance | € 2,767 | € 2,192 |
Closing balance | 687 | 2,767 | € 2,192
Currency translation reserve |  |  |
Disclosure of equity [Line Items] |  |  |
Opening balance | (2,527) | (2,395) | (3,483)
Unrealised revaluations | (222) | 183 | (7)
Realised gains/losses transferred to the statement of profit or loss | 1 |  | 4
Exchange rate differences | 763 | (316) | 444
Closing balance | € (1,986) | € (2,527) | (2,395)
Currency translation reserve | Impact IAS 29 on opening balance |  |  |
Disclosure of equity [Line Items] |  |  |
Opening balance |  |  | € 647

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- Definition A component of equity representing reserves within equity, not including retained earnings. [Refer: Retained earnings] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_e&doctype=Standard -URIDate 2024-03-27 + Details
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