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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract]      
Indefinite-life intangible assets $ 17,299 $ 17,492  
Definite-life intangible assets 2,991 2,907  
Total intangible assets, gross 20,290 20,399 $ 19,670
Accumulated amortization (1,999) (1,917)  
Intangible assets, net $ 18,291 $ 18,482