Long-term debt (Details) - EUR (€) € in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Long-term debt | ||
| Long-term debt | € 7,416,042 | € 7,287,881 |
| Less current portion | (1,674,554) | (1,596,029) |
| Long-term debt, less current portion | 5,741,488 | 5,691,852 |
| Schuldschein loans | ||
| Long-term debt | ||
| Long-term debt | 225,607 | 227,296 |
| Bonds | ||
| Long-term debt | ||
| Long-term debt | 7,059,077 | 6,967,743 |
| Other | ||
| Long-term debt | ||
| Long-term debt | € 131,358 | € 92,842 |