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Lease liabilities (non-current and current) - Summary of Maturity Analysis of Contractual Undiscounted Cash Flows of Lease Liabilities (Details) - EUR (€) € in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | € 70,893 | € 78,069
Later than one year [member] |  |
Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | 13,629 | 13,054
One to five years (member) |  |
Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | 39,294 | 42,309
More than 5 years [member] |  |
Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | € 17,970 | € 22,706

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