v3.25.4
Assets held for sale, liabilities of disposal groups held for sale and business acquisitions - Narrative (Details)
$ in Millions, € in Billions
 3 Months Ended 10 Months Ended 12 Months Ended
Nov. 27, 2025
USD ($)
Oct. 31, 2025
USD ($)
Oct. 03, 2025
USD ($)
Sep. 16, 2025
Mar. 31, 2026
USD ($)
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Sep. 30, 2025
USD ($)
Jan. 01, 2024
USD ($)
Jan. 01, 2024
EUR (€)
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             $ 3,233,034 $ 3,017,048 $ 3,038,677      
– total liabilities             3,027,368 2,824,775        
Gain/(loss) on disposal of operations [1]             $ (47) (1,752) $ (61)      
HSBC Bank Malta p.l.c.                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Percentage of share class held by immediate parent company (or by the Group) where this varies             70.03%          
Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             $ 9,713 27,126        
– total liabilities             23,382 29,011        
HSBC Continental Europe | HSBC Bank Malta p.l.c.                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Percentage of share class held by immediate parent company (or by the Group) where this varies       70.03%                
France retail banking busines | HSBC Continental Europe                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Loans and advances at amortised cost                     $ 8,300 € 7.1
– foreign exchange reclassified to income statement on disposal or dilution of a foreign operation   $ 1,500                    
Hedging gains (losses) for hedge of group of items with offsetting risk positions             100          
France retail banking busines | HSBC Continental Europe | Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets                   $ 6,000    
HSBC Life (UK) Limited                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
– foreign exchange reclassified to income statement on disposal or dilution of a foreign operation             200          
Gain/(loss) on disposal of operations             (100)          
HSBC Life (UK) Limited | Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             6,624          
– total liabilities             6,386          
Bahrain Retail Banking Business | HSBC Bank Middle East Limited                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Gain/(loss) on disposal of operations $ 100                      
French life insurance business | Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets               24,222        
– total liabilities               23,420        
French life insurance business | HSBC Continental Europe                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets                   28,200    
– total liabilities                   27,200    
Gain/(loss) on disposal of operations             (200)          
Germany private banking business | Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets               2,231        
– total liabilities               2,226        
Germany private banking business | HSBC Continental Europe                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets                   1,500    
– total liabilities                   $ 1,500    
Gain/(loss) on disposal of operations     $ 200                  
HSBC Bank Malta p.l.c. | HSBC Continental Europe | Forecast | Disposal of major subsidiary                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Gain/(loss) on disposal of operations           $ (400)            
HSBC Bank (Uruguay) S.A. | Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             2,142          
– total liabilities             1,959          
HSBC Bank (Uruguay) S.A. | HSBC Latin America Holdings (UK) Limited                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             2,100          
– total liabilities             2,000          
German custody business | Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             356          
– total liabilities             12,465          
German custody business | HSBC Continental Europe                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             400          
– total liabilities             12,500          
German custody business | HSBC Continental Europe | Forecast | Disposal of major subsidiary                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Gain/(loss) on disposal of operations         $ 100              
South Africa                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             400          
– total liabilities             2,100          
Reserve of exchange differences on translation and other reserves             100          
South Africa | Discontinued operations                        
Disclosure of analysis of single amount of discontinued operations [line items]                        
Total assets             442 673        
– total liabilities             $ 2,082 $ 3,345        
[1] In 2024, the amount includes a $1.0bn loss on disposal and a $5.2bn loss on the recycling in foreign currency translation reserve losses and other reserves
arising on sale of our business in Argentina. This was partly offset by a gain of $4.6bn, inclusive of the recycling of $0.6bn in foreign currency translation reserve
losses and $0.4bn of other reserves losses but excluding the $0.3bn gain on the foreign exchange hedging (see footnote 4 above) on the sale of our banking
business in Canada. The amount in 2023 primarily reflected losses due to restrictions impacting the recoverability of assets in Russia, partly offset by a gain on
sale of our retail banking operations in France.