Finance income and costs (Details) - EUR (€) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Dec. 31, 2024 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Analysis of income and expense [abstract] | |||||
| Interest income | € 1,200,000 | € 2,000,000.0 | € 2,700,000 | € 3,800,000 | |
| Net gain on refinancing | 0 | € 4,100,000 | 10,300,000 | 0 | 14,400,000 |
| Reversal of impairment loss on short term investments | 0 | 5,700,000 | 0 | 5,700,000 | |
| Net foreign exchange gains on translation of financial assets and financial liabilities | 12,400,000 | 0 | 7,800,000 | 0 | |
| Finance income | 13,600,000 | 18,000,000.0 | 10,500,000 | 23,900,000 | |
| Interest expense (b) | (27,600,000) | (26,400,000) | (55,600,000) | (49,100,000) | |
| Net pension interest costs | (1,200,000) | (1,000,000.0) | (2,400,000) | (2,200,000) | |
| Amortization of debt discounts and borrowing costs | (1,700,000) | (1,700,000) | (3,500,000) | (3,400,000) | |
| Net Foreign Exchange Losses On Financial Assets And Liabilities | 0 | (2,100,000) | 0 | (12,300,000) | |
| Net fair value losses on derivatives held at fair value through profit or loss | 0 | (200,000) | 0 | (400,000) | |
| Finance costs | (30,500,000) | (31,400,000) | (61,500,000) | (67,400,000) | |
| Net financing costs | € (16,900,000) | € (13,400,000) | € (51,000,000.0) | € (43,500,000) | |