Revenue - Revenue by Product (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from External Customer [Line Items]
Revenues	$ 8,080	$ 7,776	$ 6,675
Vaccines
Revenue from External Customer [Line Items]
Revenues	1,718	1,673	1,476
Other pharmaceuticals
Revenue from External Customer [Line Items]
Revenues	1,043	966	821
Dermatology [Member]
Revenue from External Customer [Line Items]
Revenues	1,329	1,180	941
Anti-infectives
Revenue from External Customer [Line Items]
Revenues	1,081	1,215	1,206
Parasiticides
Revenue from External Customer [Line Items]
Revenues	1,860	1,635	1,173
Other non-pharmaceuticals
Revenue from External Customer [Line Items]
Revenues	250	231	210
Medicated feed additives
Revenue from External Customer [Line Items]
Revenues	360	420	460
Animal health diagnostics
Revenue from External Customer [Line Items]
Revenues	353	374	305
Total Products and Services
Revenue from External Customer [Line Items]
Revenues	7,994	7,694	6,592
Contract Manufacturing and Human Health Diagnostics [Member]
Revenue from External Customer [Line Items]
Revenues	$ 86	$ 82	$ 83