Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions	Sep. 27, 2024	Dec. 31, 2023
Goodwill [Line Items]
Total goodwill	$ 42,173	$ 41,608
Operating segments | Biotechnology
Goodwill [Line Items]
Total goodwill	22,533	22,477
Operating segments | Life Sciences
Goodwill [Line Items]
Total goodwill	12,708	12,221
Operating segments | Diagnostics
Goodwill [Line Items]
Total goodwill	$ 6,932	$ 6,910