Segment reporting - Narrative (Details) € in Thousands |
Jun. 30, 2026
EUR (€)
segment
|
Dec. 31, 2025
EUR (€)
|
|---|---|---|
| Disclosure of operating segments [abstract] | ||
| Number of reportable segments | segment | 3 | |
| Number of operating segments | segment | 3 | |
| Disclosure of operating segments [line items] | ||
| Total non-current assets (other than financial instruments and deferred tax assets) | € | € 1,653,571 | € 1,441,952 |
| Netherlands | ||
| Disclosure of operating segments [line items] | ||
| Total non-current assets (other than financial instruments and deferred tax assets) | € | € 4,027 | € 2,383 |