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Intangible Assets - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about intangible assets [line items]      
Carrying amount of intangible assets $ 41,985 $ 40,034  
Intangible Assets Research And Development Expenses Expensed [Member]      
Disclosure of detailed information about intangible assets [line items]      
Intangible assets expensed research and development 194 222 $ 256
Intangible Assets With Indefinite Useful Life [member]      
Disclosure of detailed information about intangible assets [line items]      
Carrying amount of intangible assets 38,478 36,948  
Intangible Assets With Finite Useful Life [member]      
Disclosure of detailed information about intangible assets [line items]      
Carrying amount of intangible assets $ 3,507 $ 3,086