v3.25.2
Interests in associates and joint ventures - Key assumptions in value in use calculation (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Jun. 16, 2025
Dec. 31, 2024
Bank of Communications Co., Limited        
Disclosure of associates [line items]        
Long-term profit growth rate 3.00% 3.00%   3.00%
Long-term asset growth rate 3.25% 3.25%   3.25%
Discount rate 8.08% 8.08%   8.53%
Expected credit losses as a percentage of customer advances in the long term 0.87% 0.87%   0.97%
Risk-weighted assets as a percentage of total assets in the long term 62.00% 62.00%   62.00%
Effective tax rate in the long-term 15.00% 15.00%   15.00%
Capital adequacy ratio 12.50% 12.50%   12.50%
Tier 1 capital adequacy ratio 9.50% 9.50%   9.50%
Proportion of ownership interest in associate 16.00%   19.03%  
Fair value $ 13,145 $ 13,145   $ 11,631
Investments in associates reported in separate financial statements $ 21,348 $ 21,348   $ 22,367
Bank of Communications Co., Limited | Discount rate        
Disclosure of associates [line items]        
Change in bps due to reasonably possible favourable changes in key assumptions 5000.00% 5000.00%    
Bank of Communications Co., Limited | Minimum        
Disclosure of associates [line items]        
Discount rate 7.10% 7.10%   7.10%
Expected credit losses as a percentage of customer advances in the short to medium term 0.74% 0.74%   0.74%
Risk-weighted assets as a percentage of total assets in the short to medium term 62.00% 62.00%   62.00%
Loans and advances to customer growth rate 8.00% 8.00%   7.50%
Operating income ratio   1.90%   0.10%
Cost-income ratio 35.00% 35.00%   34.60%
Recoverable amount of asset or cash-generating unit $ 11,000 $ 11,000   $ 13,500
Fair value over five years $ 6,800 $ 6,800    
Bank of Communications Co., Limited | Maximum        
Disclosure of associates [line items]        
Discount rate 8.90% 8.90%   8.80%
Expected credit losses as a percentage of customer advances in the short to medium term 0.88% 0.88%   0.93%
Risk-weighted assets as a percentage of total assets in the short to medium term 63.30% 63.30%   62.50%
Loans and advances to customer growth rate 9.00% 9.00%   9.50%
Operating income ratio   9.10%   9.90%
Cost-income ratio 39.50% 39.50%   39.80%
Recoverable amount of asset or cash-generating unit $ 29,600 $ 29,600   $ 30,800
Fair value over five years 13,100 $ 13,100    
Saudi Awwal Bank        
Disclosure of associates [line items]        
Proportion of ownership interest in associate   31.00%    
Fair value 5,724 $ 5,724   5,705
Investments in associates reported in separate financial statements $ 5,245 $ 5,245   $ 5,027