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Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($)
$ in Millions
Sep. 30, 2022
Dec. 31, 2021
Goodwill [Line Items]    
Total goodwill $ 38,251 $ 41,184
Operating segments | Life Sciences    
Goodwill [Line Items]    
Total goodwill 29,145 31,638
Operating segments | Diagnostics    
Goodwill [Line Items]    
Total goodwill 6,705 7,044
Operating segments | Environmental & Applied Solutions    
Goodwill [Line Items]    
Total goodwill $ 2,401 $ 2,502