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Goodwill and other intangible assets - Amortization of Softwares Recognized in Income Statement (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Cost of sales | € 13,205 | € 12,628 | [1] | € 11,882 | [1]
Research and development expenses | 7,394 | 6,507 | [1] | 6,501 | [1]
Selling and general expenses | 9,183 | 8,933 | [1] | 8,739 | [1]
Other operating expenses | 4,382 | 3,443 | [1] | 2,523 | [1]
Net income excluding the exchanged/held-for-exchange Animal Health business | 64 | 338 | [1] | 401 | [1]
Amortization expense | 1,749 | 1,911 | [1] | 1,804 | [1]
Amortization of computer software and other rights of an industrial or operational nature |  |  |  |  |
Disclosure of detailed information about intangible assets [line items] |  |  |  |  |
Cost of sales | 16 | 14 | [2] | 9 |
Research and development expenses | 1 | 3 | [2] | 1 |
Selling and general expenses | 87 | 100 | [2] | 82 |
Other operating expenses | 1 | 2 | [2] | 4 |
Net income excluding the exchanged/held-for-exchange Animal Health business | 1 | 1 | [2] | 1 |
Amortization expense | € 106 | € 120 | [2] | € 97 |
[1] | Figures for comparative periods (2023 and 2022) have been re-presented on a consistent basis to reflect the classification of Opella as a discontinued operation
[2] | (a)Figures for comparative periods (2023 and 2022) have been re-presented on a consistent basis to reflect the classification of Opella as a discontinued operation

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- Definition The amount of all expenses directly or indirectly attributed to the goods or services sold. Attributed expenses include, but are not limited to, costs previously included in the measurement of inventory that has now been sold, such as depreciation and maintenance of factory buildings and equipment used in the production process, unallocated production overheads, and abnormal amounts of production costs of inventories. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 99 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_99&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 103 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_103&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of miscellaneous other operating expenses. [Refer: Other operating income (expense)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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