v3.26.1
Provisions - Schedule of funding status of the defined benefit obligations, United Kingdom (Details) - United Kingdom - EUR (€)
€ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of net defined benefit liability (asset) [line items]      
Present value of the obligations € 8,164 € 8,898 € 9,451
Fair value of plan assets 8,740 9,400 10,208
Provisions - Provisions for pensions (576) (502) (757)
Internal provisions for pensions 25 28 76
Net assets for pensions € (601) € (530) € (833)