v3.26.1
Financial investments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financial investments measured at fair value through other comprehensive income    
Disclosure of financial assets [line items]    
Financial assets $ 386,439 $ 385,122
Financial investments measured at fair value through other comprehensive income | – treasury and other eligible bills    
Disclosure of financial assets [line items]    
Financial assets 110,301 105,075
Financial investments measured at fair value through other comprehensive income | – debt securities    
Disclosure of financial assets [line items]    
Financial assets 274,196 277,867
Financial investments measured at fair value through other comprehensive income | – equity securities    
Disclosure of financial assets [line items]    
Financial assets 1,490 1,755
Financial investments measured at fair value through other comprehensive income | – other instruments    
Disclosure of financial assets [line items]    
Financial assets 452 425
Debt instruments measured at amortised cost    
Disclosure of financial assets [line items]    
Financial assets 218,320 182,089
Debt instruments measured at amortised cost | – treasury and other eligible bills    
Disclosure of financial assets [line items]    
Financial assets 17,495 23,445
Debt instruments measured at amortised cost | – debt securities    
Disclosure of financial assets [line items]    
Financial assets 200,825 158,644
Financial investments    
Disclosure of financial assets [line items]    
Financial assets $ 604,759 $ 567,211