Segment Information (Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 01, 2022	Jul. 02, 2021	Jul. 01, 2022	Jul. 02, 2021
Segment Reporting Information [Line Items]
Sales	$ 7,751	$ 7,218	$ 15,439	$ 14,076
Operating profit	2,205	2,005	4,377	4,002
Other
Segment Reporting Information [Line Items]
Operating profit	(76)	(68)	(144)	(133)
Life Sciences | Operating segments
Segment Reporting Information [Line Items]
Sales	3,967	3,734	7,849	7,280
Operating profit	1,174	1,144	2,292	2,295
Diagnostics | Operating segments
Segment Reporting Information [Line Items]
Sales	2,561	2,336	5,205	4,514
Operating profit	800	649	1,686	1,275
Environmental & Applied Solutions | Operating segments
Segment Reporting Information [Line Items]
Sales	1,223	1,148	2,385	2,282
Operating profit	$ 307	$ 280	$ 543	$ 565