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Breakdown of Contractual Assets and Liabilities, and Capitalized Costs - Movement In Contract Liabilities (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Contract Assets And Liabilities [Line Items] |  |
Contract liabilities, beginning balance | € 1,813 | € 1,929
Additions | 5,874 | 5,536
Disposals (previous years) | (970) | (975)
Disposals (current year) | (4,809) | (4,701)
Transfers | (2) | 7
Translation differences and inflation adjustments | (29) | 17
Contract liabilities, ending balance | 1,877 | 1,813
Long-term contracts |  |
Contract Assets And Liabilities [Line Items] |  |
Contract liabilities, beginning balance | 778 | 891
Additions | 250 | 162
Disposals (previous years) | (1) | (2)
Disposals (current year) | 0 | (1)
Transfers | (222) | (279)
Translation differences and inflation adjustments | 8 | 7
Contract liabilities, ending balance | 813 | 778
Short-term contracts |  |
Contract Assets And Liabilities [Line Items] |  |
Contract liabilities, beginning balance | 1,035 | 1,038
Additions | 5,624 | 5,374
Disposals (previous years) | (969) | (973)
Disposals (current year) | (4,809) | (4,700)
Transfers | 220 | 286
Translation differences and inflation adjustments | (37) | 10
Contract liabilities, ending balance | € 1,064 | € 1,035

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- Definition The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 105 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 116 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_a&doctype=Standard -URIDate 2024-03-27 + Details
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Period Type: | instant

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- Definition The increase in contract liabilities resulting from business combinations. [Refer: Total for all business combinations [member]; Contract liabilities] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 15 -IssueDate 2024-01-01 -Paragraph 118 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_118_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition [Line Items] for Contract Assets And Liabilities [Table] + References No definition available. + Details
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- Definition Decrease Through Disposals, Contract Liabilities + References No definition available. + Details
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Balance Type: | debit
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- Definition Decrease Through Disposals from Prior Years, Contract Liabilities + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Increase (Decrease) Through Transfers, Contract Liabilities + References No definition available. + Details
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- Definition Increase (Decrease) Through Translation Differences And Hyperinflation Adjustments, Contract Liabilities + References No definition available. + Details
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- Details
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- Details
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Period Type: |