Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions	Mar. 28, 2025	Dec. 31, 2024
Goodwill [Line Items]
Total goodwill	$ 41,657	$ 40,497
Operating segments | Biotechnology
Goodwill [Line Items]
Total goodwill	22,315	21,437
Operating segments | Life Sciences
Goodwill [Line Items]
Total goodwill	12,505	12,305
Operating segments | Diagnostics
Goodwill [Line Items]
Total goodwill	$ 6,837	$ 6,755