v3.25.4
Report of Directors Financial Review Risk Report - Scenario weighting - Narrative (Details)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Consensus central scenario    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 75.00% 75.00%
Consensus central scenario | Mainland China    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 75.00% 75.00%
Consensus central scenario | Hong Kong    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 75.00% 75.00%
Consensus central scenario | US    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 75.00% 75.00%
Consensus central scenario | UK    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 75.00% 75.00%
Consensus upside scenario    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus upside scenario | Mainland China    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus upside scenario | Hong Kong    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus upside scenario | US    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus upside scenario | UK    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus downside scenario    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus downside scenario | Mainland China    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus downside scenario | Hong Kong    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus downside scenario | US    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Consensus downside scenario | UK    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 10.00% 10.00%
Downside 2 scenario    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 5.00% 5.00%
Downside 2 scenario | Mainland China    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 5.00% 5.00%
Downside 2 scenario | Hong Kong    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 5.00% 5.00%
Downside 2 scenario | US    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 5.00% 5.00%
Downside 2 scenario | UK    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 5.00% 5.00%
Upside and central scenarios    
Disclosure of sensitivity analysis for actuarial assumptions [line items]    
Probability 85.00%