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Financial Instruments - Fair Values and Risk Management - Summary of Changes in Liabilities Arising from Financing Activities (Detail) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | € 103,091 | € 112,235 | € 101,851
Cash outflows | (26,610) | (22,497) | (16,311)
Cash inflows | 11,195 | 6,308 | 12,227
Other changes | 19,181 | 7,045 | 14,468
Ending balance | 106,857 | 103,091 | 112,235
Long-term borrowings [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 17,290 | 17,439 | 16,426
Cash outflows | (8,715) | (4,473) | (4,788)
Cash inflows | 10,912 | 4,038 | 5,873
Other changes | (2,134) | 286 | (72)
Ending balance | 17,353 | 17,290 | 17,439
Lease liabilities [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 51,849 | 57,138 | 53,593
Cash outflows | (11,057) | (10,049) | (10,090)
Other changes | 21,535 | 4,760 | 13,635
Ending balance | 62,327 | 51,849 | 57,138
Short-term borrowings [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 27,500 | 34,924 | 28,701
Cash outflows | (6,703) | (7,424) |
Cash inflows |  |  | 6,210
Other changes |  |  | 13
Ending balance | 20,797 | 27,500 | 34,924
Bank overdrafts [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 1,754 | 1,223 | 2,111
Cash outflows |  |  | (888)
Cash inflows | 283 | 531 |
Ending balance | 2,037 | 1,754 | 1,223
Non-controlling interests [member] |  |  |
Disclosure of reconciliation of liabilities arising from financing activities [line items] |  |  |
Beginning balance | 4,698 | 1,511 | 1,020
Cash outflows | (135) | (551) | (545)
Cash inflows |  | 1,739 | 144
Other changes | (220) | 1,999 | 892
Ending balance | € 4,343 | € 4,698 | € 1,511

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