Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Total goodwill	$ 39,856	$ 39,752
Operating segments | Biotechnology
Goodwill [Line Items]
Total goodwill	22,167	22,087
Operating segments | Life Sciences
Goodwill [Line Items]
Total goodwill	8,319	8,314
Operating segments | Diagnostics
Goodwill [Line Items]
Total goodwill	6,883	6,875
Operating segments | Environmental & Applied Solutions
Goodwill [Line Items]
Total goodwill	$ 2,487	$ 2,476