v3.26.1
Financial risk management - Key assumptions used for preferred shares issued by subsidiaries (Details) - Preferred shares issued by subsidiaries - Financial liabilities measured at FVTPL
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Voyager Group Inc. | Risk-free interest rate      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.038 0.044 0.039
Voyager Group Inc. | DLOM      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.128 0.13 0.125
Voyager Group Inc. | Expected volatility      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.54 0.544 0.535
Soda Technology Inc. | Risk-free interest rate      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.036 0.042 0.041
Soda Technology Inc. | DLOM      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.031 0.057 0.069
Soda Technology Inc. | Expected volatility      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.383 0.412 0.392
City Puzzle Holding Limited | Risk-free interest rate      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.036 0.043 0.042
City Puzzle Holding Limited | DLOM      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.085 0.103 0.067
City Puzzle Holding Limited | Expected volatility      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.444 0.485 0.413
Xiaoju Technology Holdings (CAY) Co. | Risk-free interest rate      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.038    
Xiaoju Technology Holdings (CAY) Co. | DLOM      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.14    
Xiaoju Technology Holdings (CAY) Co. | Expected volatility      
Key assumptions used for preferred shares issued by subsidiaries      
Significant unobservable inputs 0.619