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Cash and Cash Equivalents - Summary of Group's Cash and Cash Equivalents by Currency (Detail) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents $ 3,923 $ 1,740 $ 6,201 $ 3,025
Foreign exchange risk [member]        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents 3,923 1,740    
Foreign exchange risk [member] | US dollar [member]        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents 3,617 1,480    
Foreign exchange risk [member] | Australian dollar [member]        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents 173 112    
Foreign exchange risk [member] | Other [member]        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents $ 133 $ 148