v3.25.2
Assets held for sale, liabilities of disposal groups held for sale and business acquisitions - Narrative (Details)
$ in Millions, € in Billions
 3 Months Ended 6 Months Ended 12 Months Ended
Jan. 01, 2025
USD ($)
Sep. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2026
USD ($)
Dec. 31, 2024
USD ($)
Jan. 01, 2024
USD ($)
Jan. 01, 2024
EUR (€)
Disclosure of detailed information about business combination [line items]                  
Total external assets       $ 3,214,371 $ 2,975,003   $ 3,017,048    
Gain/(loss) recognised on assets held for sale [1]       34 $ (3,256)        
Assets held for sale       38,978     27,234    
Liabilities of disposal groups held for sale       46,165     29,011    
Discontinued operations                  
Disclosure of detailed information about business combination [line items]                  
Total external assets       38,716     27,126    
French portfolio of home and certain other loans                  
Disclosure of detailed information about business combination [line items]                  
Gain/(loss) recognised on assets held for sale $ 1,400                
Common Equity Tier One Capital 1, Percentage Increase/(Decrease) 0.20%                
Assets held for sale       6,200          
French portfolio of home and certain other loans | – net income or losses from financial instruments held for trading or managed on a fair value basis                  
Disclosure of detailed information about business combination [line items]                  
Unrealised gains or losses recognised in profit or loss relating to assets held at end of period $ 100     100          
French portfolio of home and certain other loans | Discontinued operations                  
Disclosure of detailed information about business combination [line items]                  
Total external assets       6,197       $ 8,300 € 7.1
Custody Business In Germany                  
Disclosure of detailed information about business combination [line items]                  
Assets held for sale       1,000          
Liabilities of disposal groups held for sale       12,600          
Custody Business In Germany | Disposal of major subsidiary [member]                  
Disclosure of detailed information about business combination [line items]                  
Gain/(loss) recognised on assets held for sale           $ (100)      
Custody Business In Germany | Discontinued operations                  
Disclosure of detailed information about business combination [line items]                  
Total external assets       1,014          
HSBC Life (UK) Limited                  
Disclosure of detailed information about business combination [line items]                  
Assets held for sale       6,200          
Liabilities of disposal groups held for sale       5,900          
HSBC Life (UK) Limited | Disposal of major subsidiary [member]                  
Disclosure of detailed information about business combination [line items]                  
Gain/(loss) recognised on assets held for sale   $ 100       $ 200      
Internationale Kapitalanlagegesellschaft mbH                  
Disclosure of detailed information about business combination [line items]                  
Assets held for sale       100          
Liabilities of disposal groups held for sale       100          
HSBC Bank (Uruguay) S.A.                  
Disclosure of detailed information about business combination [line items]                  
Assets held for sale       2,200          
Liabilities of disposal groups held for sale       2,000          
German private banking business                  
Disclosure of detailed information about business combination [line items]                  
Assets held for sale       2,700          
Liabilities of disposal groups held for sale       2,700          
German private banking business | Disposal of major subsidiary [member]                  
Disclosure of detailed information about business combination [line items]                  
Gain/(loss) recognised on assets held for sale     $ (200)            
German private banking business | Discontinued operations                  
Disclosure of detailed information about business combination [line items]                  
Total external assets       2,688     2,231    
South Africa                  
Disclosure of detailed information about business combination [line items]                  
Assets held for sale       800          
Liabilities of disposal groups held for sale       3,200          
Reserve Of Exchange Differences On Translation And Other Reserves       200          
South Africa | Discontinued operations                  
Disclosure of detailed information about business combination [line items]                  
Total external assets       776     $ 673    
HSBC Assurances Vie (France) | HSBC Continental Europe                  
Disclosure of detailed information about business combination [line items]                  
Assets held for sale       27,900          
Liabilities of disposal groups held for sale       26,900          
HSBC Assurances Vie (France) | Disposal of major subsidiary [member] | HSBC Continental Europe                  
Disclosure of detailed information about business combination [line items]                  
Gain/(loss) recognised on assets held for sale     200            
Bahrain retail banking business | Disposal of major subsidiary [member] | HSBC Bank Middle East                  
Disclosure of detailed information about business combination [line items]                  
Gain/(loss) recognised on assets held for sale     $ (100)            
Bahrain retail banking business | Discontinued operations                  
Disclosure of detailed information about business combination [line items]                  
Total external assets       $ 181          
[1] Includes amounts from ‘Other operating income‘ relating to the execution of all sales of business operations. In 1H24, a gain of $4.6bn inclusive of the recycling of $0.6bn in
foreign currency translation reserve losses and $0.4bn of other reserves recycling losses on the sale of our banking business in Canada, and an impairment loss of $1.2bn
relating to the sale of our business in Argentina was recognised.
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