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Income and Expenses - Additional Information (Details) - EUR (€) € in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Income And Expenses [Line Items] |  |  |  |
Decrease cost of sales |  | € (2,395.2) |  |
Cost of sales (as a percent) |  | (80.00%) |  |
Cost of sales |  | € 599.8 | € 2,995.0 | € 2,911.5
Inventories |  | 357.7 | 439.6 |
Increase of research and development expense |  | € 246.1 |  |
Research and development expense (as a percent) |  | 16.00% |  |
Research and development expenses |  | € 1,783.1 | 1,537.0 | 949.2
Increase of sales and marketing expense |  | € 3.2 |  |
Sales and marketing expense (as a percent) |  | 5.00% |  |
Sales and marketing expenses |  | € 62.7 | 59.5 | 50.4
Increase of general and administrative expense |  | € 13.3 |  |
General and administrative expense (as a percent) |  | 3.00% |  |
General and administrative expenses | [1] | € 495.0 | 481.7 | 276.8
Fair value adjustments of financial instruments measured at fair value |  | 0.0 | 0.0 | € 277.8
Omicron XBB.1.5-Adapted Monovalent COVID-19 Vaccine |  |  |  |
Disclosure Of Income And Expenses [Line Items] |  |  |  |
Cost of sales |  | 27.3 |  |
Inventories |  | 19.6 | € 0.0 |
Maximum | Omicron XBB.1.5-Adapted Monovalent COVID-19 Vaccine |  |  |  |
Disclosure Of Income And Expenses [Line Items] |  |  |  |
Write-downs (reversals of write-downs) of inventories |  | € 46.9 |  |
[1] | Adjustments to prior-year figures due to change in functional allocation of general and administrative expenses and other operating expenses (see Note 7.2).

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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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