v3.26.1
Revenue From Contracts With Customers - Schedule of Revenue Allocated to the Relevant Business Unit (Detail) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue € 2,627 € 2,001 € 2,030
2025 [member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue 2,627    
Gross Revenue 2,610    
2024 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue   2,001  
Gross Revenue   1,999  
2023 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue     2,030
Gross Revenue     2,029
Media [Member] | 2025 [member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue 977    
Media [Member] | 2024 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue   914  
Media [Member] | 2023 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue     967
Networks [Member] | 2025 [member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue 1,633    
Networks [Member] | 2024 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue   1,085  
Networks [Member] | 2023 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue     1,062
Other Units [Member] | 2025 [member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue [1] € 17    
Other Units [Member] | 2024 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue [1]   € 2  
Other Units [Member] | 2023 [Member]      
Disclosure Of Revenue Allocated To The Relevant Business Units [Line Items]      
Revenue [1]     € 1
[1] Other includes revenue not directly applicable to SES Video or SES Networks