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Provisions - Schedule of funding status of the defined benefit obligations, Other Foreign Subsidiaries (Details) - EUR (€) € in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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Other foreign subsidiaries |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Present value of the obligations | € 6,886 | € 6,903 | € 8,485
Charge to the participants | 152 | 157 | 114
Fair value of plan assets | 6,284 | 6,502 | 7,787
Provisions - Provisions for pensions | 450 | 244 | 584
Internal provisions for pensions | 1,083 | 1,084 | 1,434
Net assets for pensions | (170) | (141) | (154)
Unrecognised net assets for pensions | (463) | € (699) | € (696)
Brazil |  |  |
Disclosure of net defined benefit liability (asset) [line items] |  |  |
Present value of the obligations | 4,569 |  |
Charge to the participants | 152 |  |
Fair value of plan assets | 4,730 |  |
Provisions - Provisions for pensions | (313) |  |
Internal provisions for pensions | 210 |  |
Net assets for pensions | (60) |  |
Unrecognised net assets for pensions | € (463) |  |

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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_57_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The fair value of defined benefit plan assets. Plan assets comprise assets held by a long-term employee benefit fund and qualifying insurance policies. [Refer: At fair value [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_57_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The fair value of any plan assets, less the present value of the defined benefit obligation. [Refer: Plan assets [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2025-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2025-en-r&anchor=para_57_a&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition Internal provisions for pensions. + References No definition available. + Details
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