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Cash and Cash Equivalents - Summary of Group's Cash and Cash Equivalents by Currency (Detail) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents $ 6,201 $ 3,025 $ 3,604 $ 4,058
Foreign exchange risk [member]        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents 6,201 3,025    
Foreign exchange risk [member] | US dollar        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents 5,886 2,917    
Foreign exchange risk [member] | Australian dollar        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents 182 63    
Foreign exchange risk [member] | Other        
Disclosure In Tabular Form Of Cash And Cash And Cash Equivalents By Currency [Line Items]        
Cash and cash equivalents $ 133 $ 45