v3.26.1
Segment data (Additional Information) (Details) - Segment
6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Segment Reporting Information [Line Items]    
Number of reportable segments 1  
Number of operating segments 1  
Switzerland    
Segment Reporting Information [Line Items]    
Percentage Of Assets Held 37.00% 29.00%