v3.26.1
Related party transactions - Schedule of Transactions with Related Parties (Details) - EUR (€)
€ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Disclosure of transactions between related parties [line items]    
Revenues € 987,290 € 927,690
Cost of sales 319,475 301,658
Selling, general and administra-tive expenses 531,071 501,804
Marketing expenses 68,205 62,882
Foreign exchange (losses)/gains (3,082) 10,214
Zegna Group    
Disclosure of transactions between related parties [line items]    
Revenues 987,290 927,690
Cost of sales 319,475 301,658
Selling, general and administra-tive expenses 531,071 501,804
Marketing expenses 68,205 62,882
Financial income/(expenses) (19,616) (4,201)
Foreign exchange (losses)/gains (3,082) 10,214
Total for all related parties    
Disclosure of transactions between related parties [line items]    
Revenues 277 40
Cost of sales 7,804 11,789
Selling, general and administra-tive expenses 5,625 6,160
Marketing expenses 1,135 1,063
Financial income/(expenses) (856) (1,062)
Foreign exchange (losses)/gains (2,122) 2,296
Associates    
Disclosure of transactions between related parties [line items]    
Revenues 0 10
Cost of sales 3,119 3,049
Selling, general and administra-tive expenses 7 7
Marketing expenses 0 0
Financial income/(expenses) 0 0
Foreign exchange (losses)/gains 0 0
Associates | Filati Biagioli Modesto S.p.A.    
Disclosure of transactions between related parties [line items]    
Revenues 0 0
Cost of sales 3,118 3,049
Selling, general and administra-tive expenses 7 6
Marketing expenses 0 0
Financial income/(expenses) 0 0
Foreign exchange (losses)/gains 0 0
Associates | Other associates    
Disclosure of transactions between related parties [line items]    
Revenues 0 10
Cost of sales 1 0
Selling, general and administra-tive expenses 0 1
Marketing expenses 0 0
Financial income/(expenses) 0 0
Foreign exchange (losses)/gains 0 0
Companies controlled by Monterubello or its shareholders, the Company’s directors or Senior Management Team | EZ Real Estate S.r.l    
Disclosure of transactions between related parties [line items]    
Revenues 1 9
Cost of sales 1,326 1,287
Selling, general and administra-tive expenses 2,321 1,874
Marketing expenses 1,102 1,027
Financial income/(expenses) (283) (355)
Foreign exchange (losses)/gains 0 0
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]    
Revenues 0 0
Cost of sales 0 4,247
Selling, general and administra-tive expenses 0 10
Marketing expenses 0 0
Financial income/(expenses) 0 5
Foreign exchange (losses)/gains 0 0
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]    
Revenues 0 0
Cost of sales 911 878
Selling, general and administra-tive expenses 1,803 1,796
Marketing expenses 0 0
Financial income/(expenses) (658) (835)
Foreign exchange (losses)/gains 1 0
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]    
Revenues 227 16
Cost of sales 12 22
Selling, general and administra-tive expenses 127 134
Marketing expenses 31 36
Financial income/(expenses) 0 0
Foreign exchange (losses)/gains 0 0
Companies controlled by Monterubello or its shareholders, the Company’s directors or Senior Management Team | Other companies controlled by Monterubello or its shareholders, the Company's directors or Senior Management Team    
Disclosure of transactions between related parties [line items]    
Revenues 49 5
Cost of sales 2,436 2,306
Selling, general and administra-tive expenses 212 434
Marketing expenses 2 0
Financial income/(expenses) 1 1
Foreign exchange (losses)/gains 1 0
UBS Group AG    
Disclosure of transactions between related parties [line items]    
Revenues 0 0
Cost of sales 0 0
Selling, general and administra-tive expenses 699 515
Marketing expenses 0 0
Financial income/(expenses) 84 122
Foreign exchange (losses)/gains (2,124) 2,296
Other    
Disclosure of transactions between related parties [line items]    
Revenues 0 0
Cost of sales 0 0
Selling, general and administra-tive expenses 456 1,390
Marketing expenses 0 0
Financial income/(expenses) 0 0
Foreign exchange (losses)/gains € 0 € 0