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Segment information - Summary of Geographical Information on Net Sales and Non-Current Assets (Details) - EUR (€) € in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Dec. 31, 2025
Disclosure of geographical areas [line items] |  |  |
Net sales | € 22,106 | € 19,889 |
Non-current assets [abstract] |  |  |
Property, plant and equipment | 10,364 |  | € 10,052
Other intangible assets | 26,359 |  | 26,261
Europe |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 4,304 | 4,144 |
Non-current assets [abstract] |  |  |
Property, plant and equipment | 5,998 |  | 5,760
Other intangible assets | 3,951 |  | 5,094
of which France |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 725 | 835 |
Non-current assets [abstract] |  |  |
Property, plant and equipment | 3,161 |  | 3,123
Other intangible assets | 0 |  | 0
United States |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 11,633 | 9,535 |
Non-current assets [abstract] |  |  |
Property, plant and equipment | 2,270 |  | 2,229
Other intangible assets | 21,972 |  | 20,694
Rest of the World |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 6,169 | 6,210 |
Non-current assets [abstract] |  |  |
Property, plant and equipment | 2,096 |  | 2,063
Other intangible assets | 436 |  | 473
of which China |  |  |
Disclosure of geographical areas [line items] |  |  |
Net sales | 1,325 | € 1,388 |
Non-current assets [abstract] |  |  |
Property, plant and equipment | 167 |  | 122
Other intangible assets | € 0 |  | € 0

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- Definition The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2025-01-01 -Paragraph 118 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2025-en-r&anchor=para_118_e&doctype=Standard -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 263 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_e&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 263 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_263_e&doctype=Standard -URIDate 2025-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 54 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_c&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. Note that right-of-use assets are not included. [Contrast: Property, plant and equipment including right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2025-01-01 -Paragraph 73 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=16&code=ifrs-tx-2025-en-r&anchor=para_73_e&doctype=Standard -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 200 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e&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 200 -Subparagraph e -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_200_e&doctype=Standard -URIDate 2025-03-27 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 54 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_a&doctype=Standard -URIDate 2025-03-27 + Details
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