Equity Investments - Roll-forward (Details) - EUR (€) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of financial assets [line items] | ||
| Fair value adjustment of the year | € 2,500,000 | € 0 |
| Equity instruments | ||
| Disclosure of financial assets [line items] | ||
| Cost at January 1 | 13,575,000 | |
| Cost at December 31 | 52,941,000 | 13,575,000 |
| Fair value adjustment at January 1 | (390,000) | |
| Fair value adjustment of the year | 2,485,000 | (390,000) |
| Fair value adjustment at December 31 | 2,095,000 | (390,000) |
| Equity instruments | Gross amount before fair value adjustment. | ||
| Disclosure of financial assets [line items] | ||
| Cost at January 1 | 13,965,000 | |
| Acquisition of the year | 36,880,000 | 13,965,000 |
| Cost at December 31 | € 50,845,000 | € 13,965,000 |