Restructuring Charges and Other Costs Associated with Acquisitions and Cost-Reduction/Productivity Initiatives - Components of Costs Incurred (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost and Reserve [Line Items]
Employee termination costs		$ 33	$ 8	$ 33
Asset write-offs and asset impairments		47	43	7
Exit costs	[1],[2]	3	0	0
Total Restructuring charges and certain acquisition-related costs		43	25	51
International
Restructuring Cost and Reserve [Line Items]
Employee termination costs		12		2
Manufacturing, Research, Corporate
Restructuring Cost and Reserve [Line Items]
Employee termination costs		21	8	31
Employee Severance
Restructuring Cost and Reserve [Line Items]
Employee termination costs	[1],[2]	17	8	33
Facility Closing
Restructuring Cost and Reserve [Line Items]
Employee termination costs		13
Asset write-offs and asset impairments		13	0	0
Direct Cost
Restructuring Cost and Reserve [Line Items]
Integration costs	[3]	$ 10	$ 17	$ 18

[1] The restructuring charges are associated with the following: •For the year ended December 31, 2021, Manufacturing/research/corporate of $21 million and International of $12 million. •For the year ended December 31, 2020, Manufacturing/research/corporate of $8 million. •For the year ended December 31, 2019, Manufacturing/research/corporate of $31 million and International of $2 million.

[2] The restructuring charges for the year ended December 31, 2021 are primarily related to the realignment of our international operations and other cost-reduction and productivity initiatives.     The restructuring charges for the year ended December 31, 2020 are primarily related to CEO transition-related costs and other cost-reduction and productivity initiatives.     The restructuring charges for the year ended December 31, 2019 are primarily related to the acquisition of Abaxis and CEO transition-related costs.

[3] Integration costs represent external, incremental costs directly related to integrating acquired businesses and primarily include expenditures for consulting and the integration of systems and processes, as well as product transfer costs.