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Right-of-use assets and associated lease liabilities - Narrativo (Details) - EUR (€) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Detail information about right of use and associated liabilities [Line Items] |  |  |
Carry out several phases of a project for periods of less than a year or are considered to have low value | € 5,000 |  |
Disposals due to payments lease liabilities | (104,000,000) | € (87,000,000) |
Additions to right-of-use assets | 143,000,000 | 87,000,000 |
Miscellaneous other operating expense | 4,931,000,000 | 4,878,000,000 | € 4,182,000,000
Leases expenses [Member] |  |  |
Detail information about right of use and associated liabilities [Line Items] |  |  |
Miscellaneous other operating expense | 257,000,000 | 251,000,000 | € 257,000,000
Construction division [Member] |  |  |
Detail information about right of use and associated liabilities [Line Items] |  |  |
Additions to right-of-use assets | € 109,000,000 | € 72,000,000 |

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- Definition Carry out several phases of a project for periods of less than a year or are considered to have low value + References No definition available. + Details
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- Definition Detail information about right of use and associated liabilities + References No definition available. + Details
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- Definition Disposals due to payments lease liabilities + References No definition available. + Details
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- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2024-01-01 -Paragraph 53 -Subparagraph h -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2024-en-r&anchor=para_53_h&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of miscellaneous other operating expenses. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Details
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- Details
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