v3.26.1
Revenues - Additional Information (Detail)
$ in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
Client
Dec. 31, 2024
USD ($)
Client
Dec. 31, 2023
USD ($)
Client
Disclosure of revenue [line items]      
Revenue $ 18,448 $ 19,293 $ 17,311
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 $ 64 $ 58 $ 61
Domestic market [member]      
Disclosure of revenue [line items]      
Revenue 15,498 16,202 15,083
International market [member]      
Disclosure of revenue [line items]      
Revenue $ 2,786 $ 2,922 $ 1,912