v3.25.4
Pension and other post-employment benefits - Summary of pension and other staff-related benefit costs (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of net defined benefit liability (asset) [line items]      
Current service cost € 29 € 29 € 28
Past service cost 1 1 1
Interest cost (19) (16) (21)
Effect of curtailment or settlement (1)  
Defined benefit plans 11 13 8
Defined contribution plans 460 423 391
Pension and other post-employment benefits 471 435 399
Other staff-related benefits 16 20 19
Pension and other staff-related benefits 488 455 418
Net defined benefit asset/liability      
Disclosure of net defined benefit liability (asset) [line items]      
Current service cost 28 28 27
Past service cost 1 1 1
Interest cost (21) (19) (23)
Effect of curtailment or settlement (1)  
Defined benefit plans 7 9 5
Other post-employment benefits, net      
Disclosure of net defined benefit liability (asset) [line items]      
Current service cost 1 1 1
Other post-employment benefits      
Disclosure of net defined benefit liability (asset) [line items]      
Interest cost 3 3 2
Defined benefit plans € 3 € 4 € 3