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Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of detailed information about intangible assets [line items]      
Carrying amount of intangible assets $ 41,286 $ 40,209  
Intangible Assets Research And Development Expenses Expensed [Member]      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets expensed research and development 256 268 $ 298
Intangible Assets With Indefinite Useful Life [member]      
Disclosure of detailed information about intangible assets [line items]      
Carrying amount of intangible assets 38,239 37,652  
Intangible Assets With Finite Useful Life [member]      
Disclosure of detailed information about intangible assets [line items]      
Carrying amount of intangible assets $ 3,047 $ 2,557