v3.25.0.1
Segment information - Summary of Non-Current Asset by Geographic Area (Details) - EUR (€)
€ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Disclosure of operating segments [line items]      
Non-current assets € 3,626 € 3,086  
Property and Equipment and Lease Right-of-Use Assets      
Disclosure of operating segments [line items]      
Non-current assets 414 547 € 765
Property and Equipment and Lease Right-of-Use Assets | Sweden      
Disclosure of operating segments [line items]      
Non-current assets 67 84 142
Property and Equipment and Lease Right-of-Use Assets | United States      
Disclosure of operating segments [line items]      
Non-current assets 270 387 529
Property and Equipment and Lease Right-of-Use Assets | Other countries      
Disclosure of operating segments [line items]      
Non-current assets € 77 € 76 € 94