v3.25.2
Report of the directors financial review risk report - The consensus Upside scenario (Details) - Consensus Upside scenario allowance for ECL
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
UK | 2025    
Disclosure of financial assets [line items]    
GDP level (%, start-to-peak) 11.00% 11.30%
UK | 2026    
Disclosure of financial assets [line items]    
Unemployment rate (%, min) 3.00% 3.50%
House price index (%, start-to-peak) 18.20% 24.20%
Inflation rate (YoY % change, min) 3.30% 1.40%
Central bank policy rate (%, min) 4.30% 3.60%
US | 2025    
Disclosure of financial assets [line items]    
GDP level (%, start-to-peak) 14.90% 13.60%
US | 2026    
Disclosure of financial assets [line items]    
Unemployment rate (%, min) 3.60% 3.60%
House price index (%, start-to-peak) 24.70% 23.60%
Inflation rate (YoY % change, min) 3.60% 1.60%
Central bank policy rate (%, min) 4.40% 3.60%
Hong Kong | 2025    
Disclosure of financial assets [line items]    
GDP level (%, start-to-peak) 19.10% 21.40%
Hong Kong | 2026    
Disclosure of financial assets [line items]    
Unemployment rate (%, min) 2.70% 2.90%
House price index (%, start-to-peak) 19.80% 25.30%
Inflation rate (YoY % change, min) 2.50% (0.10%)
Central bank policy rate (%, min) 4.70% 4.00%
Mainland China | 2025    
Disclosure of financial assets [line items]    
GDP level (%, start-to-peak) 28.50% 27.50%
Mainland China | 2026    
Disclosure of financial assets [line items]    
Unemployment rate (%, min) 4.60% 4.90%
House price index (%, start-to-peak) 9.40% 9.80%
Inflation rate (YoY % change, min) 2.20% (1.00%)
Central bank policy rate (%, min) 3.30% 2.70%
France | 2025    
Disclosure of financial assets [line items]    
GDP level (%, start-to-peak) 8.40% 8.90%
France | 2026    
Disclosure of financial assets [line items]    
Unemployment rate (%, min) 6.60% 6.40%
House price index (%, start-to-peak) 23.30% 22.80%
Inflation rate (YoY % change, min) 2.30% 0.10%
Central bank policy rate (%, min) 2.50% 1.40%
UAE | 2025    
Disclosure of financial assets [line items]    
GDP level (%, start-to-peak) 28.90% 28.90%
UAE | 2026    
Disclosure of financial assets [line items]    
Unemployment rate (%, min) 2.00% 2.20%
House price index (%, start-to-peak) 24.20% 26.10%
Inflation rate (YoY % change, min) 2.50% 0.60%
Central bank policy rate (%, min) 4.40% 3.60%
Mexico | 2025    
Disclosure of financial assets [line items]    
GDP level (%, start-to-peak) 16.40% 13.60%
Mexico | 2026    
Disclosure of financial assets [line items]    
Unemployment rate (%, min) 3.00% 3.00%
House price index (%, start-to-peak) 29.00% 31.70%
Inflation rate (YoY % change, min) 4.20% 3.10%
Central bank policy rate (%, min) 8.50% 7.60%