v3.25.0.1
Property and equipment - Summary of Property and Equipment (Details) - EUR (€)
€ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance € 247  
Ending balance 188 € 247
Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 537 540
Additions 12 8
Disposals (74) (1)
Exchange differences 20 (10)
Ending balance 495 537
Accumulated amortization    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (290) (192)
Depreciation charge (41) (54)
Impairment charge (18) (49)
Disposals 52 1
Exchange differences (10) 4
Ending balance (307) (290)
Property and equipment    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 14  
Ending balance 14 14
Property and equipment | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 93 92
Additions 8 4
Disposals (5) (1)
Exchange differences 5 (2)
Ending balance 101 93
Property and equipment | Accumulated amortization    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (79) (60)
Depreciation charge (10) (14)
Impairment charge (1) (7)
Disposals 6 1
Exchange differences (3) 1
Ending balance (87) (79)
Leasehold improvements    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 233  
Ending balance 174 233
Leasehold improvements | Cost    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance 444 448
Additions 4 4
Disposals (69) 0
Exchange differences 15 (8)
Ending balance 394 444
Leasehold improvements | Accumulated amortization    
Disclosure of detailed information about property, plant and equipment [line items]    
Beginning balance (211) (132)
Depreciation charge (31) (40)
Impairment charge (17) (42)
Disposals 46 0
Exchange differences (7) 3
Ending balance € (220) € (211)