v3.25.0.1
Leases - Summary of Roll-forward of Lease Right-of-use Assets (Details) - EUR (€)
€ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Reconciliation of changes in right-of-use assets [abstract]    
Beginning balance € 300  
Ending balance 226 € 300
Cost    
Reconciliation of changes in right-of-use assets [abstract]    
Beginning balance 684 675
Increases 25 22
Decreases (140) (1)
Exchange differences 28 (12)
Ending balance 597 684
Accumulated amortization    
Reconciliation of changes in right-of-use assets [abstract]    
Beginning balance (384) (258)
Depreciation charge (44) (56)
Impairment charge (25) (74)
Decreases 99 1
Exchange differences (17) 3
Ending balance € (371) € (384)