v3.25.4
Pension and other post-employment benefits - Schedule of changes in present value of defined benefit obligation and other post-employment benefits (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of defined benefit plans [line items]      
Current service cost € 29 € 29 € 28
Interest cost (19) (16) (21)
Remeasurements: Actuarial gains and losses arising from changes in demographic assumptions (6) 3  
Remeasurements: Actuarial gains and losses arising from changes in financial assumptions (32) (94)  
Past service cost 1 1 1
Effect of curtailment or settlement (1)  
Defined benefit obligation      
Disclosure of defined benefit plans [line items]      
Opening balance as at 1 January 2,219 2,288  
Current service cost 28 28  
Interest cost 86 87  
Remeasurements: Actuarial gains and losses arising from changes in demographic assumptions 6 (3)  
Remeasurements: Actuarial gains and losses arising from changes in financial assumptions (32) (94)  
Participants contributions 4 3  
Benefits paid (127) (132)  
Past service cost 1 1  
Effect of curtailment or settlement (12) (9)  
Exchange rate differences and other changes (65) 51  
Closing balance 2,110 2,219 2,288
Other post-employment benefits      
Disclosure of defined benefit plans [line items]      
Opening balance as at 1 January 38 30  
Current service cost 1 1  
Interest cost 3 3  
Remeasurements: Actuarial gains and losses arising from changes in financial assumptions 6 5  
Benefits paid (1) (1)  
Exchange rate differences and other changes (5) 1  
Closing balance € 42 € 38 € 30