v3.26.1
Note 17 Other Intangible Assets (Details) - EUR (€)
€ in Millions
Jun. 30, 2026
Dec. 31, 2025
Other intangible assets [Line Items]    
Intangible assets other than goodwill € 2,356 € 2,140
Computer software [member]    
Other intangible assets [Line Items]    
Intangible assets other than goodwill 2,308 2,105
Intangible assets with indefinite useful life [domain]    
Other intangible assets [Line Items]    
Intangible assets other than goodwill 9 8
Intangible assets with definite useful life [Member]    
Other intangible assets [Line Items]    
Intangible assets other than goodwill € 39 € 27