Inventories - Narrative (Details) - EUR (€) € in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2025 |
|
| Disclosure Of Inventories [Line Items] | ||
| Inventories, write-down provision | € 48,604 | € 44,462 |
| Raw materials, write-down provision | 20,167 | 18,855 |
| Finished goods, write-down provision | € 4,473 | 4,089 |
| Shelf-life period | 12 months | |
| VLA2001 | ||
| Disclosure Of Inventories [Line Items] | ||
| Raw materials, write-down provision | € 17,200 | 17,200 |
| IXIARO, DUKORAL and IXCHIQ | ||
| Disclosure Of Inventories [Line Items] | ||
| Raw materials and work in progress, write-down provision | 26,900 | 23,200 |
| Finished goods, write-down provision | € 4,500 | € 4,100 |