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Revenues - Additional Information (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2024
USD ($)
Client
Dec. 31, 2023
USD ($)
Client
Dec. 31, 2022
USD ($)
Client
Disclosure of revenue [line items]      
Revenue $ 19,293 $ 17,311 $ 18,757
Number of external client accounted for 10% or more of Group's revenue | Client 0 0 0
Revenues from contracts with customers which have been included in "Contract liabilities" line item in the statement of financial position at the beginning of each year $ 58 $ 61 $ 117
Domestic market [member]      
Disclosure of revenue [line items]      
Revenue 16,202 15,083 16,100
International market [member]      
Disclosure of revenue [line items]      
Revenue $ 2,922 $ 1,912 $ 2,337