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Share-based Payment - Schedule of Warrant Activity (Detail) | 12 Months Ended
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Dec. 31, 2024 € / shares | Dec. 31, 2023 € / shares | Dec. 31, 2022 € / shares
Disclosure Of Warrant Activity [line items] |  |  |
Ending balance | 6,204,122 |  |
Ending balance | € 93.25 |  |
Warrants [member] |  |  |
Disclosure Of Warrant Activity [line items] |  |  |
Beginning balance | 6,523,784 | 6,864,011 | 7,085,073
Granted during the year | 504,105 | 395,275 | 357,092
Exercised during the year | (682,048) | (555,144) | (214,613)
Forfeited during the year | (141,719) | (180,358) | (363,541)
Ending balance | 6,204,122 | 6,523,784 | 6,864,011
Vested at the reporting date | 5,226,643 | 5,273,056 | 4,972,026
Beginning balance | € 86.38 | € 81.3 | € 80.3
Granted during the year | 122.48 | 91.07 | 100.4
Exercised during the year | 43.35 | 17.76 | 21.83
Forfeited during the year | 107.85 | 115.79 | 123.62
Ending balance | 93.25 | 86.38 | 81.3
Vested at the reporting date | € 89.33 | € 80.02 | € 66.34

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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_45&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2024-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2024-en-r&anchor=para_47_b&doctype=Standard -URIDate 2024-03-27 + Details
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