v3.25.4
Goodwill and Intangible Assets Gross carrying value, accumulated amortization and net carrying value of intangible assets (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) $ 27,946 $ 31,618
Intangible Assets, Accumulated Amortization (7,472) (8,350)
Intangible Assets, Net (Excluding Goodwill) 20,474 23,268
Customer-Related Intangible Assets [Member]    
Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) 14,456 17,190
Intangible Assets, Accumulated Amortization (5,966) (6,675)
Intangible Assets, Net (Excluding Goodwill) 8,490 10,515
Trademarks and Technology [Member]    
Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) 2,356 2,917
Intangible Assets, Accumulated Amortization (1,265) (1,284)
Intangible Assets, Net (Excluding Goodwill) 1,091 1,633
Operating licenses and certificates, trademarks, and other indefinite-lived [Member]    
Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) 10,734 10,454
Intangible Assets, Accumulated Amortization 0 0
Intangible Assets, Net (Excluding Goodwill) 10,734 10,454
Other Intangible Assets [Member]    
Intangible Assets [Line Items]    
Intangible Assets, Gross (Excluding Goodwill) 400 1,057
Intangible Assets, Accumulated Amortization (241) (391)
Intangible Assets, Net (Excluding Goodwill) $ 159 $ 666