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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, 2023 | Dec. 31, 2022
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Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | € 78,069 | € 61,340
Later than one year [member] |  |
Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | 13,054 | 13,404
One to five years (member) |  |
Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | 42,309 | 35,116
More than 5 years [member] |  |
Disclosure of Non Current and Current Portion of the Lease Liabilities [Line Items] |  |
Undiscounted lease liabilities | € 22,706 | € 12,820

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