Segment Information (Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 27, 2024	Sep. 29, 2023	Sep. 27, 2024	Sep. 29, 2023
Segment Reporting Information [Line Items]
Sales	$ 5,798	$ 5,624	$ 17,337	$ 17,485
Operating profit	958	1,185	3,438	3,865
Other
Segment Reporting Information [Line Items]
Operating profit	(82)	(84)	(243)	(242)
Biotechnology | Operating segments
Segment Reporting Information [Line Items]
Sales	1,653	1,664	4,890	5,413
Operating profit	390	417	1,177	1,493
Life Sciences | Operating segments
Segment Reporting Information [Line Items]
Sales	1,782	1,706	5,297	5,211
Operating profit	35	313	503	974
Diagnostics | Operating segments
Segment Reporting Information [Line Items]
Sales	2,363	2,254	7,150	6,861
Operating profit	$ 615	$ 539	$ 2,001	$ 1,640