Restructuring Reserves (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Reserve [Roll Forward]
Beginning balance	$ 21	$ 34	$ 80
Net restructuring charges incurred	37	51	52
Payments	(40)	(57)	(69)
Currency translation	(1)	(7)	(1)
Ending balance	17	21	34
Restructuring and Related Costs, Other Costs (Income), Net	160	48	465
Loss (Gain) on Divestiture of Businesses	0	0	$ (482)
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income [Extensible List]			Restructuring and other costs (income)
Impairment of Intangible Assets (Excluding Goodwill)	122	$ 32
Charges For Cash Compensation Due To Employees Of Acquired Businesses	$ 35
Other restructuring charges			$ 17
Restructuring Reserve, Expected Final Year of Payments	2022
Specialty Diagnostics [Member]
Restructuring Reserve [Roll Forward]
Loss (Gain) on Divestiture of Businesses			(482)
Cumulative Effect, Period of Adoption, Adjustment [Member]
Restructuring Reserve [Roll Forward]
Beginning balance			$ (28)