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Related Party Disclosures - Summary of Compensation of Key Management Personnel (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of transactions between related parties [line items] |  |  |
Total compensation paid to key management personnel | € 8.9 | € 15.5 | € 20.8
Management Board |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Fixed compensation | 3.9 | 2.9 | 2.2
Short-term incentive – first installment | 0.7 | 0.6 | 0.6
Short-term incentive – second installment | 1.0 | 0.7 | 1.2
Other variable compensation | 0.8 | 0.1 | 0.0
Share-based payments (incl. long-term incentive) | 1.9 | 10.7 | 16.4
Total compensation paid to key management personnel | € 8.3 | € 15.0 | € 20.4
Management Board | Jens Holstein |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Phantom shares awarded (in shares) | 4,246 | 4,246 | 4,246
Supervisory Board |  |  |
Disclosure of transactions between related parties [line items] |  |  |
Total compensation paid to key management personnel | € 0.6 | € 0.5 | € 0.4

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- Definition The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2023-01-01 -Paragraph 17 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=24&code=ifrs-tx-2023-en-r&anchor=para_17&doctype=Standard -URIDate 2023-03-23 + Details
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