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Taxation - Summary of total unused tax losses carried forward analysed by expiry terms (Details) - EUR (€) € in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
No deferred tax asset recognised | € 815 | € 937
Deferred tax asset recognised | 1,055 | 1,731
Within 1 year |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
No deferred tax asset recognised |  |
Deferred tax asset recognised |  | 591
More than 1 year but less than 5 years |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
No deferred tax asset recognised | 126 | 120
Deferred tax asset recognised | 633 | 587
More than 5 years but less than 10 years |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
No deferred tax asset recognised | 9 | 9
Deferred tax asset recognised | 2 | 2
More than 10 years but less than 20 years |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
No deferred tax asset recognised |  |
Deferred tax asset recognised |  |
Unlimited |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
No deferred tax asset recognised | 681 | 808
Deferred tax asset recognised | € 421 | € 550

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- Definition The amount of unused tax losses for which no deferred tax asset is recognised in the statement of financial position. [Refer: Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2023-01-01 -Paragraph 81 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2023-en-r&anchor=para_81_e&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Unused tax losses for which deferred tax asset recognised. + References No definition available. + Details
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