Off-balance sheet arrangements narrative (Details) - EUR (€) |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Off-balance sheet arrangements | ||
| Purchase Commitments Related To Projects In Development Phase | € 61,700,000 | € 160,900,000 |
| Purchase Commitment Related to Shared Services | 25,200,000 | 46,000,000 |
| Purchase Commitment Related to Jyseleca Product Supply Chain | 1,600,000 | 2,600,000 |
| Purchase Commitment Related to Commercial And Medical Affairs | 400,000 | 1,700,000 |
| Purchase Commitment Related To Project In Discovery Research Phase | 2,500,000 | 60,900,000 |
| Purchase commitments | € 91,344,000 | € 272,240,000 |