v3.26.1
Assets in the course of construction - Addditional Information (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure Of Assets In The Course Of Construction [Line Items]      
Impairment charge     € 425
Space segment [member]      
Disclosure Of Assets In The Course Of Construction [Line Items]      
Borrowing costs capitalised € 31 € 16 € 28
Percentage of weighted average effective rate 3.96% 3.45% 3.10%
Percentage of weighted average interest rate 3.70% 3.14% 2.97%
Addition on assets in course of construction for o3b mpower € 106 € 159  
Addition on assets in course of construction for geo satellites € 62 € 129