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Summary of material accounting policy information - Schedule of Scope of Consolidation (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 07, 2025
Dec. 03, 2025
Jan. 01, 2024
Apr. 27, 2023
Dec. 31, 2025
Dec. 31, 2024
CGU Ermenegildo Zegna Korea Co.Ltd.            
Accounting Policies [Line Items]            
Group’s percentage interest     100.00%      
Luigi Fedeli e Figlio S.r.l.            
Accounting Policies [Line Items]            
Proportion of ownership interest in associate         15.00% 15.00%
Tom Ford International LLC            
Accounting Policies [Line Items]            
Proportion of ownership interest in associate       15.00%    
Norda Run Inc.            
Accounting Policies [Line Items]            
Proportion of ownership interest in associate   7.50%     32.50% 25.00%
Tizeta S.r.l.            
Accounting Policies [Line Items]            
Company         Tizeta S.r.l.  
Registered office         Sesto Fiorentino (FI)  
Issued capital         € 284,278  
Group’s percentage interest         100.00% 100.00%
Tom Ford Distribution S.r.l.            
Accounting Policies [Line Items]            
Company         Tom Ford Distribution S.r.l.  
Registered office         Sesto Fiorentino (FI)  
Issued capital         € 117,616  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna Monaco S.a.r.l            
Accounting Policies [Line Items]            
Company         Ermenegildo Zegna Monaco S.a.r.l.  
Registered office         Principato di Monaco  
Issued capital         € 150,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Registered office         Amsterdam (Netherlands)  
Issued capital         € 9,153,722  
Ermenegildo Zegna N.V. | Filati Biagioli Modesto S.p.A.            
Accounting Policies [Line Items]            
Issued capital         € 16,884,402  
Name of associate         Filati Biagioli Modesto S.r.l. (1)  
Principal place of business of associate         Montale (PT)  
Name of the Investor         Ermenegildo Zegna N.V.  
Proportion of ownership interest in associate         48.50% 45.00%
Ermenegildo Zegna N.V. | Luigi Fedeli e Figlio S.r.l.            
Accounting Policies [Line Items]            
Issued capital         € 3,358,000  
Name of associate         Luigi Fedeli e Figlio S.r.l.  
Principal place of business of associate         Monza (MB)  
Name of the Investor         Ermenegildo Zegna N.V.  
Proportion of ownership interest in associate         15.00% 15.00%
Ermenegildo Zegna N.V. | Sharmoon.EZ.Garments Co. Ltd            
Accounting Policies [Line Items]            
Issued capital         € 100,000,000  
Name of foreign associates, joint arrangements and other investments         Sharmoon.EZ.Garments Co. Ltd  
Principal place of business of other investments         Wenzhou (China)  
Group’s percentage interest         5.00% 5.00%
Name of the Investor         Ermenegildo Zegna N.V.  
Ermenegildo Zegna N.V. | Consorzio Re. Crea            
Accounting Policies [Line Items]            
Issued capital         € 1,038,543  
Name of foreign associates, joint arrangements and other investments         Consorzio Re.Crea  
Principal place of business of other investments         Milan  
Group’s percentage interest         5.00%  
Name of the Investor         Ermenegildo Zegna N.V.  
Proportion of ownership interests held by non-controlling interests         15.40% 15.40%
Ermenegildo Zegna N.V. | In.co. S.p.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         In.co. S.p.A.  
Registered office         Valdilana (BI)  
Issued capital         € 4,050,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Tizeta S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Percentage interest, per investor         0.364  
Ermenegildo Zegna N.V. | Lanificio Ermenegildo Zegna e Figli S.p.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Lanificio Ermenegildo Zegna e Figli S.p.A.  
Registered office         Valdilana (BI)  
Issued capital         € 3,100,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ezi S.p.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ezi S.p.A.  
Registered office         Milan  
Issued capital         € 5,750,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | EZ Service S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         EZ Service S.r.l.  
Registered office         Valdilana (BI)  
Issued capital         € 500,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Bonotto S.p.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Bonotto S.p.A.  
Registered office         Colceresa (VI)  
Issued capital         € 1,239,600  
Group’s percentage interest         60.00% 60.00%
Ermenegildo Zegna N.V. | Cappellificio Cervo S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Cappellificio Cervo S.r.l.  
Registered office         Biella  
Issued capital         € 300,000  
Group’s percentage interest         51.00% 51.00%
Ermenegildo Zegna N.V. | Gruppo Dondi S.p.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Gruppo Dondi S.p.A.  
Registered office         Carpi (MO)  
Issued capital         € 1,502,800  
Group’s percentage interest         65.00% 65.00%
Ermenegildo Zegna N.V. | Tessitura Ubertino S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Tessitura Ubertino S.r.l.  
Registered office         Valdilana (BI)  
Issued capital         € 100,000  
Group’s percentage interest         60.00% 60.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Giyim Sanayi ve Tic. A. S.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Giyim Sanayi ve Tic. A. S.  
Registered office         Istanbul (Turkey)  
Issued capital         € 118,291,439  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna H.m.b.H.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna H.m.b.H.  
Registered office         Wien (Austria)  
Issued capital         € 610,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Société de Textiles Astrum France S.à.r.l.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Société de Textiles Astrum France S.à.r.l.  
Registered office         Paris (France)  
Issued capital         € 500,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna GmbH            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna GmbH  
Registered office         Munich (Germany)  
Issued capital         € 500,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Zegna Japan Co., LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Zegna Japan Co., LTD  
Registered office         Minato-Ku-Tokyo (Japan)  
Issued capital         € 100,000,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Fantasia (London) Limited            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Fantasia (London) Limited  
Registered office         London (UK)  
Issued capital         € 499,800  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna S.A. de C.V.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna S.A. de C.V.  
Registered office         Ciudad de Mexico (Mexico)  
Issued capital         € 459,600,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ezeti Portugal. S.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ezeti Portugal. S.A.  
Registered office         Lisbon (Portugal)  
Issued capital         € 800,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Italco S.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Italco S.A.  
Registered office         Sant Quirze (Spain)  
Issued capital         € 1,911,300  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Czech s.r.o            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Czech s.r.o  
Registered office         Prague (Czech Republic)  
Issued capital         € 1,350,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Co.Ti. Service S.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Co.Ti. Service S.A.  
Registered office         Stabio (Switzerland)  
Issued capital         € 27,940,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Consitex S.A.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Consitex S.A.  
Registered office         Stabio (Switzerland)  
Issued capital         € 15,000,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Corporation            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Corporation  
Registered office         New York, NY  
Issued capital         € 500,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Zegna (China) Enterprise Management Co., Ltd.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Zegna (China) Enterprise Management Co., Ltd.  
Registered office         Shanghai (China)  
Issued capital         € 58,309,140  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna (China) Co., LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna (China) Co., LTD  
Registered office         Shanghai (China)  
Issued capital         € 50,000,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Hong Kong LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Hong Kong LTD  
Registered office         Hong Kong  
Issued capital         € 538,240,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | E.Z. Trading (Hong Kong) LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         E.Z. Trading (Hong Kong) LTD  
Registered office         Hong Kong  
Issued capital         € 82,120,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Canada Inc.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Canada Inc.  
Registered office         Toronto (Canada)  
Issued capital         € 700,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | E. Z. New Zealand LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         E. Z. New Zealand LTD  
Registered office         Auckland (New Zealand)  
Issued capital         € 5,800,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | E. Z. Thai Holding Ltd            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         E. Z. Thai Holding Ltd  
Registered office         Bangkok (Thailand)  
Issued capital         € 3,000,000  
Group’s percentage interest         49.00% 49.00%
Ermenegildo Zegna N.V. | Zegna South Asia Private LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Zegna South Asia Private LTD  
Registered office         Mumbai (India)  
Issued capital         € 902,316,770  
Group’s percentage interest         51.00% 51.00%
Ermenegildo Zegna N.V. | ISMACO TEKSTİL LİMİTED ŞİRKETİ            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         ISMACO TEKSTİL LİMİTED ŞİRKETİ  
Registered office         Istanbul (Turkey)  
Issued capital         € 10,000,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ezesa Brasil Participacoes LTDA            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ezesa Brasil Participacoes LTDA  
Registered office         San Paolo (Brazil)  
Issued capital         € 77,481,487  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Maroc S.A.R.L.A.U.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Maroc S.A.R.L.A.U.  
Registered office         Casablanca (Morocco)  
Issued capital         € 530,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Vietnam LLC            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Vietnam LLC  
Registered office         Hanoi City (Vietnam)  
Issued capital         € 132,294,900,000  
Group’s percentage interest         90.00% 90.00%
Ermenegildo Zegna N.V. | Zegna Doha Trading WLL            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Zegna Doha Trading WLL (6)  
Registered office         Doha (Qatar)  
Issued capital         € 2,000,000  
Group’s percentage interest         70.00% 0.00%
Ermenegildo Zegna N.V. | EZ US Holding Inc            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         EZ US Holding Inc. (7)  
Registered office         Wilmington (U.S.A.)  
Issued capital         € 1,000,099  
Group’s percentage interest         0.00% 100.00%
Ermenegildo Zegna N.V. | E.Zegna Attica Single Member Societé Anonyme            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         E.Zegna Attica Single Member Societé Anonyme  
Registered office         Athens (Greece)  
Issued capital         € 650,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenelgildo Zegna Denmark ApS            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenelgildo Zegna Denmark ApS  
Registered office         Aarhus (Denmark)  
Issued capital         € 400,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | EZ CA Holding Corp.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         EZ CA Holding Corp.  
Registered office         Toronto (Canada)  
Issued capital         € 1,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | CGU Ermenegildo Zegna Korea Co.Ltd.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Ermenegildo Zegna Korea Co. Ltd.  
Registered office         Seoul (Korea)  
Issued capital         € 11,134,170,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna N.V. | Ermenegildo Zegna Monaco S.a.r.l            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Percentage interest, per investor         0.99  
Ermenegildo Zegna N.V. | Thom Browne Inc.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Thom Browne Inc.  
Registered office         Wilmington (U.S.A.)  
Issued capital         € 5,510  
Group’s percentage interest         92.00% 92.00%
Ermenegildo Zegna N.V. | Tom Ford International LLC            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna N.V.  
Company         Tom Ford International LLC  
Registered office         Delaware (U.S.A.)  
Issued capital         € 11,000,099  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | Tizeta S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Percentage interest, per investor         0.364  
Tom Ford International LLC | Tom Ford Distribution S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Percentage interest, per investor         0.1498  
Tom Ford International LLC | Tom Ford Switzerland Sagl            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Switzerland Sagl  
Registered office         Stabio (Switzerland)  
Issued capital         € 1,000,000  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | Tom Ford Retail UK Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Retail UK Limited  
Registered office         London (UK)  
Issued capital         € 1  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | Tom Ford Studio Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Studio Limited  
Registered office         London (UK)  
Issued capital         € 50,000  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | T.F. Property Ltd            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         T.F. Property Ltd (2)  
Registered office         London (UK)  
Issued capital         € 1  
Group’s percentage interest         0.00% 100.00%
Tom Ford International LLC | Tom Ford Retail LLC            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Retail LLC  
Registered office         New York (U.S.A.)  
Issued capital         € 2,060,000  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | Tom Ford Retail Hong Kong Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Retail Hong Kong Limited  
Registered office         Hong Kong  
Issued capital         € 1,000,000  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | Tom Ford Hong Kong Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Hong Kong Limited  
Registered office         Hong Kong  
Issued capital         € 1,000  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | Tom Ford Retail Korea (Yuhan Hoesa)            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Retail Korea (Yuhan Hoesa)  
Registered office         Seoul (Korea)  
Issued capital         € 50,000,000  
Group’s percentage interest         100.00% 100.00%
Tom Ford International LLC | Tom Ford Retail Japan GK (Godo Kaisha)            
Accounting Policies [Line Items]            
Held directly by         Tom Ford International LLC  
Company         Tom Ford Retail Japan GK (Godo Kaisha)  
Registered office         Tokyo (Japan)  
Issued capital         € 10,000,000  
Group’s percentage interest         100.00% 100.00%
Tom Ford Distribution S.r.l. | Tizeta S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Tom Ford Distribution S.r.l.  
Percentage interest, per investor         0.272  
Tom Ford Distribution S.r.l. | Tom Ford Showroom Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford Distribution S.r.l.  
Company         Tom Ford Showroom Limited  
Registered office         London (UK)  
Issued capital         € 1  
Group’s percentage interest         100.00% 100.00%
Thom Browne Trading SA | Thom Browne Services Italy S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne Services Italy S.r.l.  
Registered office         Milan  
Issued capital         € 10,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | Thom Browne France Services            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne France Services  
Registered office         Paris (France)  
Issued capital         € 50,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | Thom Browne UK Limited            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne UK Limited  
Registered office         Beckenham (UK)  
Issued capital         € 1  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | Thom Browne (China) Co., Ltd.            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne (China) Co., Ltd.  
Registered office         Shanghai (China)  
Issued capital         € 195,973,210  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | Thom Browne (Macau) Limited            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne (Macau) Limited  
Registered office         Hong Kong  
Issued capital         € 500,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | Thom Browne Canada            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne Canada  
Registered office         Vancouver (Canada)  
Issued capital         € 100  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | Thom Browne Hong Kong Limited            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne Hong Kong Limited  
Registered office         Hong Kong  
Issued capital         € 500,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | Thom Browne Eyewear (T.B.E.) SA            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne Eyewear (T.B.E.) SA  
Registered office         Stabio (Switzerland)  
Issued capital         € 1,000,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Trading SA | CGU Thom Browne Korea Ltd.            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Trading SA  
Company         Thom Browne Korea Ltd.  
Registered office         Seoul (South Korea)  
Issued capital         € 100,000,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Services Italy S.r.l | Thom Browne Retail Italy S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Services Italy S.r.l.  
Company         Thom Browne Retail Italy S.r.l.  
Registered office         Milan  
Issued capital         € 10,000  
Group’s percentage interest         92.00% 92.00%
Tom Ford Switzerland Sagl | Tom Ford Distribution S.r.l.            
Accounting Policies [Line Items]            
Held directly by         Tom Ford Switzerland Sagl  
Percentage interest, per investor         0.8502  
Ezeti S.L. | Ermenegildo Zegna Madrid S.A.            
Accounting Policies [Line Items]            
Held directly by         Ezeti S.L.  
Company         Ermenegildo Zegna Madrid S.A. (3)  
Registered office         Barcelona (Spain)  
Issued capital         € 901,500  
Group’s percentage interest         0.00% 100.00%
Italco S.A. | Ezeti S.L.            
Accounting Policies [Line Items]            
Held directly by         Italco S.A.  
Company         Ezeti S.L.  
Registered office         Barcelona (Spain)  
Issued capital         € 500,032  
Group’s percentage interest         100.00% 100.00%
Consitex S.A. | Ermenegildo Zegna Far-East Pte LTD            
Accounting Policies [Line Items]            
Held directly by         Consitex S.A.  
Company         Ermenegildo Zegna Far-East Pte LTD  
Registered office         Singapore  
Issued capital         € 21,776,432  
Group’s percentage interest         100.00% 100.00%
Consitex S.A. | Ermenegildo Zegna (Macau) LTD            
Accounting Policies [Line Items]            
Held directly by         Consitex S.A.  
Company         Ermenegildo Zegna (Macau) LTD  
Registered office         Kowloon Bay (Hong Kong)  
Issued capital         € 4,650,000  
Group’s percentage interest         100.00% 100.00%
Consitex S.A. | Zegna Gulf Trading LLC            
Accounting Policies [Line Items]            
Held directly by         Consitex S.A.  
Company         Zegna Gulf Trading LLC  
Registered office         Dubai (UAE)  
Issued capital         € 300,000  
Group’s percentage interest         49.00% 49.00%
Consitex S.A. | Zegna Consitex Arabia For Trading LLC            
Accounting Policies [Line Items]            
Held directly by         Consitex S.A.  
Company         Zegna Consitex Arabia for Trading LLC  
Registered office         Riyadh (KSA)  
Issued capital         € 28,600,000  
Group’s percentage interest         70.00% 70.00%
Consitex S.A. | Ermenegildo Zegna Monaco S.a.r.l            
Accounting Policies [Line Items]            
Held directly by         Consitex S.A.  
Percentage interest, per investor         0.01  
Ermenegildo Zegna Far-East Pte LTD | Ermenegildo Zegna Australia PTY LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna Far-East Pte LTD  
Company         Ermenegildo Zegna Australia PTY LTD  
Registered office         Sydney (Australia)  
Issued capital         € 18,000,000  
Group’s percentage interest         100.00% 100.00%
Ermenegildo Zegna Far-East Pte LTD | The Italian Fashion Co. LTD            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna Far-East Pte LTD  
Percentage interest, per investor         0.31  
Ermenegildo Zegna Far-East Pte LTD | Ermenegildo Zegna Malaysia Sdn. Bhd.            
Accounting Policies [Line Items]            
Held directly by         Ermenegildo Zegna Far-East Pte LTD  
Company         Ermenegildo Zegna Malaysia Sdn. Bhd.  
Registered office         Kuala Lumpur (Malaysia)  
Issued capital         € 3,000,000  
Group’s percentage interest         100.00% 100.00%
E. Z. Thai Holding Ltd | The Italian Fashion Co. LTD            
Accounting Policies [Line Items]            
Held directly by         E. Z. Thai Holding Ltd  
Company         The Italian Fashion Co. LTD  
Registered office         Bangkok (Thailand)  
Issued capital         € 16,000,000  
Group’s percentage interest         65.00% 65.00%
Percentage interest, per investor         0.34  
Zegna Gulf Trading LLC | Zegna for Retail of Readymade and Novelty Clothes W.L.L.            
Accounting Policies [Line Items]            
Held directly by         Zegna Gulf Trading LLC  
Company         Zegna for Retail of Readymade and Novelty Clothes W.L.L.  
Registered office         Kuwait City (Kuwait)  
Issued capital         € 125,000  
Group’s percentage interest         49.00% 49.00%
Thom Browne Inc. | Thom Browne Japan Inc.            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Inc.  
Company         Thom Browne Japan Inc.  
Registered office         Tokyo (Japan)  
Issued capital         € 1,000,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Inc. | Thom Browne Trading SA            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Inc.  
Company         Thom Browne Trading SA  
Registered office         Stabio (Switzerland)  
Issued capital         € 100,000  
Group’s percentage interest         92.00% 92.00%
Thom Browne Eyewear SA | Thom Browne Eyewear France SAS            
Accounting Policies [Line Items]            
Held directly by         Thom Browne Eyewear SA  
Company         Thom Browne Eyewear France SAS  
Registered office         Paris (France)  
Issued capital         € 40,000  
Group’s percentage interest         92.00% 92.00%
Tom Ford Retail Hong Kong Limited | Tom Ford Retail Macau Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford Retail Hong Kong Limited  
Company         Tom Ford Retail Macau Limited (4)  
Registered office         Macau  
Issued capital         € 25,000  
Group’s percentage interest         0.00% 100.00%
Percentage interest, per investor         0.96  
Tom Ford Retail Hong Kong Limited | Tom Ford Clothing Retail Shanghai Company Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford Retail Hong Kong Limited  
Company         Tom Ford Clothing Retail Shanghai Company Limited  
Registered office         Shanghai (China)  
Issued capital         € 37,000,155  
Group’s percentage interest         100.00% 100.00%
EZ CA Holding Corp. | Tom Ford International LLC            
Accounting Policies [Line Items]            
Issued capital         € 8,069,414  
Name of foreign associates, joint arrangements and other investments         Norda Run Inc. (5)  
Principal place of business of associate         Toronto (Canada)  
Name of the Investor         EZ CA Holding Corp.  
Proportion of ownership interest in associate         32.50% 25.00%
Lanificio Ermenegildo Zegna e Figli S.p.A | Acquedotto Piancone S.r.l.            
Accounting Policies [Line Items]            
Issued capital         € 42,000  
Name of foreign associates, joint arrangements and other investments         Acquedotto Piancone S.r.l.  
Principal place of business of other investments         Valdilana (BI)  
Group’s percentage interest         67.00% 67.00%
Name of the Investor         Lanificio Ermenegildo Zegna e Figli S.p.A.  
Lanificio Ermenegildo Zegna e Figli S.p.A | Pettinatura di Verrone S.r.l.            
Accounting Policies [Line Items]            
Issued capital         € 3,000,000  
Name of foreign associates, joint arrangements and other investments         Pettinatura di Verrone S.r.l.  
Principal place of business of other investments         Verrone (BI)  
Name of the Investor         Lanificio Ermenegildo Zegna e Figli S.p.A.  
Proportion of ownership interests held by non-controlling interests         15.00% 15.00%
Bonotto S.p.A. | F2 S.r.l.            
Accounting Policies [Line Items]            
Issued capital         € 90,000  
Name of foreign associates, joint arrangements and other investments         F2 S.r.l.  
Principal place of business of other investments         Schio (VI)  
Name of the Investor         Bonotto S.p.A.  
Proportion of ownership interests held by non-controlling interests         29.00% 29.00%
Tom Ford Hong Kong Limited | Tom Ford Retail Macau Limited            
Accounting Policies [Line Items]            
Held directly by         Tom Ford Hong Kong Limited  
Percentage interest, per investor         0.04  
Zegna Doha Trading WLL            
Accounting Policies [Line Items]            
Proportion of ownership interest in associate 70.00%