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Related party transactions - Schedule of Balances with Related Parties (Details) - EUR (€) € in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Disclosure of transactions between related parties [line items] |  |
Non-current assets | € 1,644,495 | € 1,627,811
Current assets | 1,190,213 | 1,206,162
Non-current liabilities | 985,235 | 998,201
Current liabilities | 750,392 | 852,885
Zegna Group |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 1,644,495 | 1,627,811
Current assets | 1,190,213 | 1,206,162
Non-current liabilities | 985,235 | 998,201
Current liabilities | 750,392 | 852,885
Total transactions with related parties |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 72,498 | 79,300
Current assets | 11,108 | 53,407
Non-current liabilities | 61,350 | 68,372
Current liabilities | 20,387 | 43,193
Associates |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 0 | 0
Current assets | 91 | 14
Non-current liabilities | 0 | 0
Current liabilities | 617 | 844
Associates | Filati Biagioli Modesto S.p.A. |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 0 | 0
Current assets | 91 | 14
Non-current liabilities | 0 | 0
Current liabilities | 617 | 780
Associates | Norda Run Inc. |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 0 | 0
Current assets | 0 | 0
Non-current liabilities | 0 | 0
Current liabilities | 0 | 0
Associates | Luigi Fedeli e Figlio S.r.l. |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 0 | 0
Current assets | 0 | 0
Non-current liabilities | 0 | 0
Current liabilities | 0 | 64
Companies controlled by Monterubello or its shareholders, the Company’s directors or Senior Management Team | EZ Real Estate |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 34,723 | 39,222
Current assets | 619 | 81
Non-current liabilities | 28,577 | 33,284
Current liabilities | 7,036 | 8,955
Companies controlled by Monterubello or its shareholders, the Company’s directors or Senior Management Team | Alan Real Estate S.A. |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 35,830 | 37,357
Current assets | 0 | 0
Non-current liabilities | 32,106 | 33,332
Current liabilities | 5,410 | 5,153
Companies controlled by Monterubello or its shareholders, the Company’s directors or Senior Management Team | Schneider Group |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 0 | 0
Current assets | 3 | 211
Non-current liabilities | 0 | 0
Current liabilities | 2,508 | 2,319
Companies controlled by Monterubello or its shareholders, the Company’s directors or Senior Management Team | Agnona S.r.l. |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 0 | 0
Current assets | 96 | 33
Non-current liabilities | 0 | 0
Current liabilities | 132 | 125
Companies controlled by Monterubello or its shareholders, the Company’s directors or Senior Management Team | Other companies controlled by Monterubello or its shareholders, Zegna directors or senior management |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 329 | 179
Current assets | 114 | 280
Non-current liabilities | 0 | 0
Current liabilities | 1,441 | 1,944
UBS Group AG |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 1,616 | 2,542
Current assets | 10,185 | 52,788
Non-current liabilities | 667 | 1,756
Current liabilities | 2,489 | 23,254
Other |  |
Disclosure of transactions between related parties [line items] |  |
Non-current assets | 0 | 0
Current assets | 0 | 0
Non-current liabilities | 0 | 0
Current liabilities | € 754 | € 599

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