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Share-Based Payments - Summary of Expense Recognized for Employee Services Received (Details) € in Millions, £ in Millions | 1 Months Ended | 12 Months Ended |
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May 31, 2022 EUR (€) | May 31, 2021 EUR (€) | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 EUR (€) | Dec. 31, 2021 EUR (€) | Dec. 31, 2023 GBP (£)
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Expense arising from equity-settled share-based payment arrangements |  |  | € 44.1 | € 46.5 | € 61.0 |
Expense / (Income) arising from cash-settled share-based payment arrangements |  |  | 7.3 | 61.5 | 32.7 |
Total |  |  | 51.4 | 108.0 | 93.7 |
Cost of sales |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Total |  |  | 6.5 | 3.0 | 7.0 |
Research and development expenses |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Total |  |  | 33.4 | 84.6 | 60.5 |
Sales and marketing expenses |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Total |  |  | 1.0 | 0.8 | 0.5 |
General and administrative expenses |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Total |  |  | 10.5 | 19.6 | 25.7 |
Employee Stock Ownership Plan |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Expense arising from equity-settled share-based payment arrangements |  |  | 0.0 | 13.8 | 20.2 |
Expense / (Income) arising from cash-settled share-based payment arrangements |  |  | (0.9) | 53.4 | 6.3 |
Chief Executive Officer Grant |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Expense arising from equity-settled share-based payment arrangements |  |  | 1.2 | 3.1 | 5.9 |
Management Board Grant |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Expense arising from equity-settled share-based payment arrangements |  |  | 3.2 | 4.3 | 2.4 |
Expense / (Income) arising from cash-settled share-based payment arrangements |  |  | (2.4) | 0.0 | 3.6 |
Reclassification for share-based payment arrangement | € 3.3 | € 1.1 |  |  |  |
BioNTech 2020 Employee Equity Plan for Employees Based Outside North America |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Expense arising from equity-settled share-based payment arrangements |  |  | 36.3 | 25.3 | 32.5 |
InstaDeep Employee Incentive Plan |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Expense arising from equity-settled share-based payment arrangements |  |  | 3.4 | 0.0 | 0.0 |
Long-term deposits | £ |  |  |  |  |  | £ 15.0
BioNTech Restricted Stock Unit Plan for North America Employees |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |
Expense / (Income) arising from cash-settled share-based payment arrangements |  |  | € 10.6 | € 8.1 | € 22.8 |

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- Definition The amount of expense arising from cash-settled share-based payment transactions in which the goods or services received did not qualify for recognition as assets. [Refer: Expense from share-based payment transactions] + 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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