v3.25.4
Derivatives - Notional contract amounts and fair value of derivatives by product contract type held by HSBC (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of detailed information about hedging instruments [line items]    
Notional contract amount of trading instruments $ 32,176,498 $ 30,052,812
Nominal contract amount of hedging instruments 532,346 488,270
Trading Assets $ 328,804 $ 373,855
Fair value of hedging assets 6,179 7,528
Gross total fair values of derivative assets 334,983 381,383
Fair value of derivative assets 237,740 268,637
Fair value of trading liabilities 329,870 372,189
Fair value of hedging liabilities 5,227 5,005
Gross total fair values of derivative liabilities 335,097 377,194
Fair value of derivative liabilities 237,854 264,448
Derivatives    
Disclosure of detailed information about hedging instruments [line items]    
Amounts offset on derivative liabilities (97,243) (112,746)
Derivatives    
Disclosure of detailed information about hedging instruments [line items]    
Amounts offset on derivative assets (97,243) (112,746)
Foreign exchange    
Disclosure of detailed information about hedging instruments [line items]    
Notional contract amount of trading instruments $ 13,639,520 $ 11,706,591
Nominal contract amount of hedging instruments 108,585 82,161
Trading Assets $ 111,012 $ 142,055
Fair value of hedging assets 1,233 2,738
Gross total fair values of derivative assets 112,245 144,793
Fair value of trading liabilities 110,786 133,910
Fair value of hedging liabilities 662 75
Gross total fair values of derivative liabilities 111,448 133,985
Interest rate    
Disclosure of detailed information about hedging instruments [line items]    
Notional contract amount of trading instruments $ 17,272,408 $ 17,316,173
Nominal contract amount of hedging instruments 423,761 406,109
Trading Assets $ 190,296 $ 209,794
Fair value of hedging assets 4,946 4,790
Gross total fair values of derivative assets 195,242 214,584
Fair value of trading liabilities 182,569 212,980
Fair value of hedging liabilities 4,565 4,930
Gross total fair values of derivative liabilities 187,134 217,910
Equities    
Disclosure of detailed information about hedging instruments [line items]    
Notional contract amount of trading instruments $ 908,649 $ 768,732
Nominal contract amount of hedging instruments 0 0
Trading Assets $ 15,660 $ 17,116
Fair value of hedging assets 0 0
Gross total fair values of derivative assets 15,660 17,116
Fair value of trading liabilities 21,311 20,643
Fair value of hedging liabilities 0 0
Gross total fair values of derivative liabilities 21,311 20,643
Credit    
Disclosure of detailed information about hedging instruments [line items]    
Notional contract amount of trading instruments $ 164,160 $ 143,136
Nominal contract amount of hedging instruments 0 0
Trading Assets $ 1,294 $ 1,756
Fair value of hedging assets 0 0
Gross total fair values of derivative assets 1,294 1,756
Fair value of trading liabilities 2,212 1,769
Fair value of hedging liabilities 0 0
Gross total fair values of derivative liabilities 2,212 1,769
Commodity and other    
Disclosure of detailed information about hedging instruments [line items]    
Notional contract amount of trading instruments $ 191,761 $ 118,180
Nominal contract amount of hedging instruments 0 0
Trading Assets $ 10,542 $ 3,134
Fair value of hedging assets 0 0
Gross total fair values of derivative assets 10,542 3,134
Fair value of trading liabilities 12,992 2,887
Fair value of hedging liabilities 0 0
Gross total fair values of derivative liabilities $ 12,992 $ 2,887