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Debt and Capital - Additional information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt and capital [line items]        
Current restricted cash and cash equivalents $ 0 $ 12    
Undrawn borrowing facilities 7,790 10,239    
Cash and cash equivalents $ 1,740 6,201 $ 3,025 $ 3,604
Description of changes in LIBOR rate A reasonably possible change in the Secured Overnight Financing Rate (SOFR) (+2.0%/-2.0% (2022: USD London Interbank Offered Rate (USD LIBOR) +1.5%/-1.5%)), with all variables held constant, would not have a material impact on the Group’s equity or the income statement in the current period.      
Other financial assets $ 329 797    
Interest rate swap contract [member] | Cash flow hedges [member]        
Debt and capital [line items]        
Nominal amount of financial instrument interest rate swaps used to hedge credit risk 600      
Interest rate benchmark rates not exposed to cash flow hedge [member] | Currency swap contract [member]        
Debt and capital [line items]        
Derivative financial liabilities 0 5    
Interest rate risk [member] | Interest rate benchmark rates not exposed to cash flow hedge [member]        
Debt and capital [line items]        
Cash and cash equivalents 1,605 6,143    
Interest bearing liabilities excluding transaction costs 0 83    
Other financial assets $ 0 $ 167