Business Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Segment Reporting Information [Line Items]
Revenues		$ 6,917	$ 6,316	$ 13,147	$ 12,441
Cost of revenues charges, net		(2)		(4)
Selling, general and administrative charges, net		(42)		(48)
Restructuring and other (costs) income, net		(12)	484	(50)	473
Amortization of acquisition-related intangible assets				(842)	(851)
Consolidated operating income		1,391	1,496	2,297	2,416
Interest Income		8	60	44	127
Interest Expense		(137)	(181)	(263)	(370)
Other (Expense) Income, Net		(9)	18	3	37
Income before income taxes		1,253	1,393	2,081	2,210
Life Sciences Solutions [Member]
Segment Reporting Information [Line Items]
Restructuring and other (costs) income, net				(1)
Analytical Instruments [Member]
Segment Reporting Information [Line Items]
Restructuring and other (costs) income, net		(5)		(19)
Specialty Diagnostics [Member]
Segment Reporting Information [Line Items]
Selling, general and administrative charges, net		(42)		(46)
Restructuring and other (costs) income, net		(4)		(6)
Laboratory Products and Services [Member]
Segment Reporting Information [Line Items]
Cost of revenues charges, net		(2)		(4)
Selling, general and administrative charges, net				(2)
Restructuring and other (costs) income, net		(1)		(19)
Total Reportable Segments [Member]
Segment Reporting Information [Line Items]
Consolidated operating income	[1]	1,864	1,482	3,241	2,852
Total Reportable Segments [Member] | Life Sciences Solutions [Member]
Segment Reporting Information [Line Items]
Revenues		2,602	1,710	4,376	3,317
Consolidated operating income	[1]	1,234	609	1,909	1,170
Total Reportable Segments [Member] | Analytical Instruments [Member]
Segment Reporting Information [Line Items]
Revenues		1,051	1,324	2,152	2,646
Consolidated operating income	[1]	135	286	306	568
Total Reportable Segments [Member] | Specialty Diagnostics [Member]
Segment Reporting Information [Line Items]
Revenues		988	943	1,946	1,900
Consolidated operating income	[1]	214	242	450	484
Total Reportable Segments [Member] | Laboratory Products and Services [Member]
Segment Reporting Information [Line Items]
Revenues		2,787	2,633	5,517	5,146
Consolidated operating income	[1]	281	345	576	630
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues		(511)	(294)	(844)	(568)
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Cost of revenues charges, net		(2)	(5)	(4)	(11)
Selling, general and administrative charges, net		(42)	(36)	(48)	(47)
Restructuring and other (costs) income, net		(12)	484	(50)	473
Amortization of acquisition-related intangible assets		$ (417)	$ (429)	$ (842)	$ (851)

[1] Represents operating income before certain charges to cost of revenues and selling, general and administrative expenses; restructuring and other costs/income, net; and amortization of acquisition-related intangibles.