v3.25.4
Goodwill and other intangible assets - Goodwill (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]    
Balance at the beginning of the year [1] $ 83,880 $ 84,626
Business acquisitions 459 87
Other, including impairments and foreign currency translation (1,265) (833)
Balance at the end of the year [1] $ 83,074 $ 83,880
[1] Net of accumulated goodwill impairments of $13.0 billion as of December 31, 2025, $11.5 billion as of December 31, 2024 and $11.1 billion as of December 31, 2023.