Business Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Segment Reporting Information [Line Items]
Revenues	$ 11,818	$ 9,906
Operating Income	2,821	3,049
Restructuring and other costs	(2)	(14)
Amortization of acquisition-related intangible assets	(609)	(423)
Interest income	18	12
Interest expense	(136)	(125)
Other income/(expense)	(163)	(183)
Income before income taxes	2,540	2,753
Life Sciences Solutions [Member]
Segment Reporting Information [Line Items]
Restructuring and other costs	(1)
Analytical Instruments [Member]
Segment Reporting Information [Line Items]
Restructuring and other costs	(2)
Specialty Diagnostics [Member]
Segment Reporting Information [Line Items]
Restructuring and other costs	(1)
Laboratory Products and Services [Member]
Segment Reporting Information [Line Items]
Restructuring and other costs	2
Total Reportable Segments [Member]
Segment Reporting Information [Line Items]
Operating Income	3,450	3,510
Total Reportable Segments [Member] | Life Sciences Solutions [Member]
Segment Reporting Information [Line Items]
Revenues	4,231	4,203
Operating Income	2,176	2,279
Total Reportable Segments [Member] | Analytical Instruments [Member]
Segment Reporting Information [Line Items]
Revenues	1,518	1,387
Operating Income	301	272
Total Reportable Segments [Member] | Specialty Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenues	1,482	1,615
Operating Income	353	428
Total Reportable Segments [Member] | Laboratory Products and Services [Member]
Segment Reporting Information [Line Items]
Revenues	5,442	3,597
Operating Income	620	531
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues	(855)	(896)
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Cost of revenues adjustments	(11)	(8)
Selling, general and administrative expenses adjustments	(7)	(16)
Restructuring and other costs	(2)	(14)
Amortization of acquisition-related intangible assets	$ (609)	$ (423)