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Provisions - Movements in the Fair Value of Plan Assets (Details) - Post-employment defined benefit plans - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | € (395) |
Net defined benefit asset (liability) at end of period | (284) | € (395)
Fair value of plan assets |  |
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | 894 | 870
Translation differences | (128) | 31
Interest income | 67 | 77
Actuarial losses and gains | (31) | (30)
Company contributions | 2 | 2
Benefits paid | (47) | (48)
Transfers | 0 | (4)
Other movements | (6) | (4)
Net defined benefit asset (liability) at end of period | 751 | 894
Germany | Operating segments |  |
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | (133) |
Net defined benefit asset (liability) at end of period | (120) | (133)
Germany | Operating segments | Fair value of plan assets |  |
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | 103 | 101
Translation differences | 0 | 0
Interest income | 4 | 3
Actuarial losses and gains | 0 | 0
Company contributions | 2 | 2
Benefits paid | (3) | (3)
Transfers | (1) | 0
Other movements | 1 | 0
Net defined benefit asset (liability) at end of period | 106 | 103
Brazil | Operating segments |  |
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | (187) |
Net defined benefit asset (liability) at end of period | (89) | (187)
Brazil | Operating segments | Fair value of plan assets |  |
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | 777 | 751
Translation differences | (129) | 31
Interest income | 63 | 74
Actuarial losses and gains | (31) | (30)
Company contributions | 0 | 0
Benefits paid | (44) | (45)
Transfers | 0 | 0
Other movements | (8) | (4)
Net defined benefit asset (liability) at end of period | 628 | 777
Others | Operating segments |  |
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | (1) |
Net defined benefit asset (liability) at end of period | 0 | (1)
Others | Operating segments | Fair value of plan assets |  |
Net Defined Benefit Liability Asset [Roll Forward] |  |
Net defined benefit asset (liability) at beginning of period | 14 | 18
Translation differences | 1 | 0
Interest income | 0 | 0
Actuarial losses and gains | 0 | 0
Company contributions | 0 | 0
Benefits paid | 0 | 0
Transfers | 1 | (4)
Other movements | 1 | 0
Net defined benefit asset (liability) at end of period | € 17 | € 14

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- Definition The decrease (increase) in net defined benefit liability (asset) resulting from contributions to a defined benefit plan by the employer. [Refer: Net defined benefit liability (asset); Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph f -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_f&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The decrease (increase) in a net defined benefit liability (asset) resulting from the remeasurement of that net defined benefit liability (asset). [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_c&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from changes in foreign exchange rates. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_e&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from changes that the entity does not separately disclose in the same statement or note. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The increase (decrease) in the net defined benefit liability (asset) resulting from the passage of time. [Refer: Interest expense; Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_b&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The amount of deficit or surplus in a defined benefit plan, adjusted for any effect of limiting a net defined benefit asset to the asset ceiling. [Refer: Defined benefit plans [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 140 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_140_a&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition The decrease (increase) in the net defined benefit liability (asset) resulting from payments from the plan. [Refer: Net defined benefit liability (asset)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2024-01-01 -Paragraph 141 -Subparagraph g -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2024-en-r&anchor=para_141_g&doctype=Standard -URIDate 2024-03-27 + Details
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- Definition Increase (decrease) through transfers, net defined benefit liability (asset) + References No definition available. + Details
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- Definition Net Defined Benefit Liability Asset [Roll Forward] + References No definition available. + Details
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