| Contract Liabilities and Advances from Customers - Summary of Contract Liabilities and Advances from Customers (Details) - EUR (€) € in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | 
|---|---|---|
| Deferred income including contract liabilities [abstract] | ||
| Contract Liabilities | € 22,306 | € 14,847 | 
| Advances from customers | 62,310 | 26,568 | 
| Total contract liabilities and advances from customers | 84,616 | 41,415 | 
| Current | 45,198 | 41,415 | 
| Non-current | € 39,418 | € 0 | 
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- Definition The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition The amount of current deferred income including current contract liabilities. [Refer: Deferred income including contract liabilities] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition The amount of liabilities representing income that has been received (or the amount is due) but is not yet earned, including contract liabilities. [Refer: Contract liabilities] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- References No definition available. 
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- Definition The amount of non-current deferred income including non-current contract liabilities. [Refer: Deferred income including contract liabilities] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Definition Advances from customers. No definition available. 
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