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Taxation - Summary of deferred tax in connection with unused tax losses carried forward (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Changes in deferred tax liability (asset) [abstract] |  |
Total unused tax losses carried forward | € 1,870 | € 2,668
Unused tax losses carried forward not recognised as a deferred tax asset | 815 | 937
Unused tax losses carried forward recognised as a deferred tax asset | € 1,055 | € 1,731
Average tax rate | 19.90% | 21.10%
Deferred tax asset | € 209 | € 365

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- References No definition available. + Details
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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 Average effective deferred tax rate. + References No definition available. + Details
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- Definition Deferred tax in connection with unused tax losses carried forward. + References No definition available. + Details
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- Definition Unused tax losses carried forward. + References No definition available. + Details
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- Definition Unused tax losses carried forward recognised as deferred tax asset. + References No definition available. + Details
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