Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions	Sep. 29, 2023	Dec. 31, 2022
Goodwill [Line Items]
Total goodwill	$ 39,155	$ 39,752
Operating segments | Biotechnology
Goodwill [Line Items]
Total goodwill	21,643	22,087
Operating segments | Life Sciences
Goodwill [Line Items]
Total goodwill	8,227	8,314
Operating segments | Diagnostics
Goodwill [Line Items]
Total goodwill	6,805	6,875
Operating segments | Environmental & Applied Solutions
Goodwill [Line Items]
Total goodwill	$ 2,480	$ 2,476