Nature of Operations and Summary of Significant Accounting Policies - Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Beginning balance	$ 41,924	$ 26,041
Acquisitions	24	16,024
Finalization of purchase price allocations for 2021 acquisitions	177
Currency translation	(929)	(141)
Ending balance	41,196	41,924
Life Sciences Solutions
Goodwill [Roll Forward]
Beginning balance	10,143	8,590
Acquisitions	0	1,560
Finalization of purchase price allocations for 2021 acquisitions	9
Currency translation	(6)	(7)
Ending balance	10,146	10,143
Analytical Instruments
Goodwill [Roll Forward]
Beginning balance	5,043	5,079
Acquisitions	24	56
Finalization of purchase price allocations for 2021 acquisitions	0
Currency translation	(102)	(92)
Ending balance	4,965	5,043
Specialty Diagnostics
Goodwill [Roll Forward]
Beginning balance	3,277	3,370
Acquisitions	0	8
Finalization of purchase price allocations for 2021 acquisitions	0
Currency translation	(186)	(101)
Ending balance	3,091	3,277
Laboratory Products and Biopharma Services
Goodwill [Roll Forward]
Beginning balance	23,461	9,002
Acquisitions	0	14,400
Finalization of purchase price allocations for 2021 acquisitions	168
Currency translation	(635)	59
Ending balance	$ 22,994	$ 23,461

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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