v3.26.1
Events after the balance sheet date (Details) - USD ($)
$ / shares in Units, $ in Millions
 6 Months Ended
Aug. 04, 2026
Jun. 30, 2026
Jun. 30, 2027
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Disclosure of non-adjusting events after reporting period [line items]            
Assets   $ 3,438,161   $ 3,438,161 $ 3,214,371 $ 3,233,034
Liabilities   3,241,080   3,241,080   3,027,368
Gain/(loss) recognised on assets held for sale [1]       (433) (34)  
Expense of restructuring activities       318 $ 616  
Major ordinary share transactions            
Disclosure of non-adjusting events after reporting period [line items]            
Stock repurchase amount $ 1,000          
Ordinary shares | Second interim dividend            
Disclosure of non-adjusting events after reporting period [line items]            
Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share (in USD per share) $ 0.10          
Discontinued operations            
Disclosure of non-adjusting events after reporting period [line items]            
Assets   22,336   22,336   9,713
Liabilities   30,097   30,097   23,382
HSBC Bank (Uruguay) S.A. | Discontinued operations            
Disclosure of non-adjusting events after reporting period [line items]            
Assets   2,287   2,287   2,142
Liabilities   2,077   2,077   $ 1,959
Singapore Insurance | HSBC Insurance (Asia-Pacific) Holdings Limited | Forecast            
Disclosure of non-adjusting events after reporting period [line items]            
Gain/(loss) recognised on assets held for sale     $ 1,800      
Singapore Insurance | Discontinued operations            
Disclosure of non-adjusting events after reporting period [line items]            
Assets   10,737   10,737    
Liabilities   10,434   10,434    
Australian Home and Personal Loans Portfolio | HSBC Austrailia            
Disclosure of non-adjusting events after reporting period [line items]            
Increase/(decrease) through foreign exchange reclassified to income statement on disposal of a foreign operation   (300)        
Australian Home and Personal Loans Portfolio | HSBC Austrailia | Forecast            
Disclosure of non-adjusting events after reporting period [line items]            
Expense of restructuring activities     300      
Australian Home and Personal Loans Portfolio | Discontinued operations | HSBC Austrailia            
Disclosure of non-adjusting events after reporting period [line items]            
Assets   25,300   25,300    
Egypt Retail Banking Business | HSBC Bank Egypt S.A.E. | Forecast            
Disclosure of non-adjusting events after reporting period [line items]            
Gain/(loss) recognised on assets held for sale     $ (300)      
Egypt Retail Banking Business | Discontinued operations | HSBC Bank Egypt S.A.E.            
Disclosure of non-adjusting events after reporting period [line items]            
Assets   400   400    
Liabilities   $ 2,800   $ 2,800    
[1] Amounts in 1H26 include $0.2bn from the recycling of foreign currency translation reserve losses arising on completion of the sale of our UK life insurance
business, HSBC Life (UK) Limited, and $0.3bn of disposal losses recognised upon the ‘held for sale‘ classification of HSBC Continental Europe’s shareholding in
HSBC Bank Malta p.l.c.