v3.25.2
Right-of-use assets - Additional Information (Detail) - EUR (€)
€ in Thousands
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Disclosure of quantitative information about right-of-use assets [line items]    
Net impairment of leased and owned stores € 6,101 € 4,979
Zegna Segment    
Disclosure of quantitative information about right-of-use assets [line items]    
Net impairment of leased and owned stores € 4,046 € 3,036
Bottom of range    
Disclosure of quantitative information about right-of-use assets [line items]    
Rental contracts, term 1 year  
Extension options term 1 year  
Top of range    
Disclosure of quantitative information about right-of-use assets [line items]    
Rental contracts, term 15 years  
Extension options term 10 years