v3.26.1
Provisions - Schedule of Main Assumptions Used (Details) - aDS
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
SWITZERLAND      
Disclosure of other provisions [line items]      
Discount rate (DR) 1.30%    
Interest rate (IR) for projecting savings capital 1.75%    
Long-term expected rate of salary increase (SI) 1.50%    
Rate of pension increase (PI) 0.00%    
Long-term expected inflation rate (social security increase rate) 1.00%    
Long term rate of mortality improvement (LTR) 0.0125    
Capital option upon retirement 30.00%    
FRANCE      
Disclosure of other provisions [line items]      
Discount rate (DR) 3.50% 3.35% 3.20%