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Equity (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Disclosure Equity Abstract    
Research and development reserves, Beginning balance $ 3,281 $ 3,084
Statutory reserves, Beginning balance 3,281 3,084
Research and development reserves, Transfers to reserves 116 197
Statutory reserves, Transfers to reserves 8,544 197
Capital remuneration reserve, Transfers to reserves 8,428  
Research and development reserves, Ending balance 3,397 3,281
Capital remuneration reserve, Ending balance 8,428  
Statutory reserves, Ending balance $ 11,825 $ 3,281