Segment reporting - Additional Information (Details) - EUR (€) € in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
|
| Operating Segments [Abstract] | ||||
| Adjustments for share based payments including employer tax | € (4.2) | € 2.3 | € (6.8) | € 7.6 |
| Acquisition related costs | € 0.3 | € 0.3 | € 0.8 | € 0.8 |