Segment Information (Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 28, 2024	Jun. 30, 2023	Jun. 28, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Sales	$ 5,743	$ 5,912	$ 11,539	$ 11,861
Operating profit	1,168	1,163	2,480	2,680
Other
Segment Reporting Information [Line Items]
Operating profit	(83)	(81)	(161)	(158)
Biotechnology | Operating segments
Segment Reporting Information [Line Items]
Sales	1,713	1,885	3,237	3,749
Operating profit	462	480	787	1,076
Life Sciences | Operating segments
Segment Reporting Information [Line Items]
Sales	1,770	1,796	3,515	3,505
Operating profit	233	340	468	661
Diagnostics | Operating segments
Segment Reporting Information [Line Items]
Sales	2,260	2,231	4,787	4,607
Operating profit	$ 556	$ 424	$ 1,386	$ 1,101