Segment Information (Segment Results) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2021	Oct. 02, 2020	Oct. 01, 2021	Oct. 02, 2020
Segment Reporting Information [Line Items]
Sales	$ 7,229	$ 5,884	$ 21,305	$ 15,524
Operating profit	1,309	1,088	5,311	2,630
Other
Segment Reporting Information [Line Items]
Operating profit	(67)	(70)	(200)	(272)
Life Sciences | Operating segments
Segment Reporting Information [Line Items]
Sales	3,632	2,923	10,912	7,215
Operating profit	975	505	3,270	1,243
Diagnostics | Operating segments
Segment Reporting Information [Line Items]
Sales	2,449	1,889	6,963	5,176
Operating profit	145	408	1,420	952
Environmental & Applied Solutions | Operating segments
Segment Reporting Information [Line Items]
Sales	1,148	1,072	3,430	3,133
Operating profit	$ 256	$ 245	$ 821	$ 707