Property, Plant and Equipment - Additional Information (Details) - EUR (€) € in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Total non-current assets | € 5,842.0 | € 3,726.2 |
| United States | Total for all subsidiaries | ||
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Total non-current assets | 129.8 | 177.6 |
| United Kingdom | Total for all subsidiaries | ||
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Total non-current assets | 464.2 | 529.6 |
| Germany | ||
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Total non-current assets | 2,511.5 | 1,682.7 |
| CHINA | Total for all subsidiaries | ||
| Disclosure of detailed information about property, plant and equipment [line items] | ||
| Total non-current assets | € 168.8 | € 0.6 |