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Intangible assets - Goodwill - Narrative (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Disclosure of reconciliation of changes in goodwill [line items] |  |  |
Exchange differences and other items | € (291) | € (605) | € 240
Impairment loss recognised in profit or loss, goodwill | € 4 | € 4 | € 20
Sensitivity analysis, discount rate adjustment, increase (in basis points) | 0.50% |  |
Sensitivity analysis, discount rate adjustment, decrease (in basis points) | 0.50% |  |
Sensitivity analysis, perpetuity growth rate adjustment, decrease (in basis points) | 0.50% |  |
Sensitivity analysis, perpetuity growth rate adjustment, increase (in basis points) | 0.50% |  |
Sensitivity analysis, cash flow projections, decrease | 5.00% |  |
Minimum |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |
Earnings projections based on financial budgets, approve period | 3 years |  |
Maximum |  |  |
Disclosure of reconciliation of changes in goodwill [line items] |  |  |
Earnings projections based on financial budgets, approve period | 5 years |  |

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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2025-01-01 -Paragraph B67 -Subparagraph d -Clause v -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_d_v&doctype=Appendix&subtype=B -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 37 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_37_c&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 37 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_37_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The increase (decrease) in goodwill resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2025-01-01 -Paragraph B67 -Subparagraph d -Clause vi -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2025-en-r&anchor=para_B67_d_vi&doctype=Appendix&subtype=B -URIDate 2025-03-27 + Details
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