Discontinued operations and assets held for sale - Transfer of Jyseleca Business to Alfasigma (Details) - Jyseleca business, classified as held for sale |
12 Months Ended | |||
|---|---|---|---|---|
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Dec. 30, 2023
item
|
Oct. 30, 2023
country
|
Dec. 31, 2025
EUR (€)
|
Dec. 31, 2024
EUR (€)
|
|
| Disclosure of analysis of single amount of off-balance sheet arrangements [line items] | ||||
| Number of positions in European countries agreed to transfer | item | 400 | |||
| Number of European countries in which positions has been agreed to transfer | country | 14 | |||
| Upfront payment received | € 50,000,000 | |||
| Potential Sales Based Milestones To Receive. | 120,000,000 | |||
| Contributions related to development activities. | € 25,000,000 | € 15,000,000 | ||