Segment Information (Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2021	Jul. 03, 2020	Jul. 02, 2021	Jul. 03, 2020
Segment Reporting Information [Line Items]
Sales	$ 7,218	$ 5,297	$ 14,076	$ 9,640
Operating profit	2,005	844	4,002	1,542
Other
Segment Reporting Information [Line Items]
Operating profit	(68)	(83)	(133)	(202)
Life Sciences | Operating segments
Segment Reporting Information [Line Items]
Sales	3,734	2,642	7,280	4,292
Operating profit	1,144	412	2,295	738
Diagnostics | Operating segments
Segment Reporting Information [Line Items]
Sales	2,336	1,660	4,514	3,287
Operating profit	649	293	1,275	544
Environmental & Applied Solutions | Operating segments
Segment Reporting Information [Line Items]
Sales	1,148	995	2,282	2,061
Operating profit	$ 280	$ 222	$ 565	$ 462