v3.25.2
Investments in securities - Summary of Investments in Securities (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Disclosure Of Investments In Securities [Line Items]    
Investments in securities $ 2,255 $ 3,246
At fair value    
Disclosure Of Investments In Securities [Line Items]    
Investments in securities 2,218 3,218
At fair value | Measured by reference to prices in active markets for identical assets    
Disclosure Of Investments In Securities [Line Items]    
Investments in securities 1,197 1,983
At fair value | Measured by reference to other observable inputs    
Disclosure Of Investments In Securities [Line Items]    
Investments in securities 95 92
At fair value | Measured using predominantly unobservable inputs    
Disclosure Of Investments In Securities [Line Items]    
Investments in securities 926 1,143
At cost    
Disclosure Of Investments In Securities [Line Items]    
Investments in securities 37 28
Equities    
Disclosure Of Investments In Securities [Line Items]    
Investments in securities 1,104 1,605
Equity securities at fair value through other comprehensive income 1,104 1,605
Debt securities    
Disclosure Of Investments In Securities [Line Items]    
Investments in securities 1,151 1,641
Equity securities at fair value through other comprehensive income 1,017 1,285
Equity securities at fair value through profit or loss 97 328
Debt securities at amortised cost $ 37 $ 28