Goodwill and Other Intangible Assets (Goodwill by Segment) (Details) - USD ($) $ in Millions	Mar. 27, 2026	Dec. 31, 2025
Goodwill [Line Items]
Total goodwill	$ 42,765	$ 43,151
Operating segments | Biotechnology
Goodwill [Line Items]
Total goodwill	22,999	23,313
Operating segments | Life Sciences
Goodwill [Line Items]
Total goodwill	12,805	12,856
Operating segments | Diagnostics
Goodwill [Line Items]
Total goodwill	$ 6,961	$ 6,982