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Related Party Transactions - Summary of Remuneration of Directors and Other Key Management Personnel (Detail) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Disclosure of transactions between related parties [abstract]    
Salaries, Director fees and other short-term benefits $ 5 $ 4
Post-employment compensation 1 1
Share-based payments $ 7 $ 6