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Goodwill And Acquired Intangibles (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Goodwill and Intangible Assets [Line Items]    
Carrying amount of indefinite-lived intangible assets relating to trade names $ 197 $ 197
Carrying amount of indefinite-lived research and development 202 202
Amortization expense of acquired finite-lived intangible assets $ 284 317
Global Services | Operating Segments [Member] | Distribution Rights [Member]    
Goodwill and Intangible Assets [Line Items]    
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   178
Global Services | Operating Segments [Member] | Trade Names [Member]    
Goodwill and Intangible Assets [Line Items]    
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)   $ 293