Revenue (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Summary of Activity in Sales Rebates and Discounts Liability

The following table summarizes the activity in the sales rebates and discounts liability in the U.S., France, and the United Kingdom:

	Year Ended December 31,
	2020		2019
Beginning balance	$	175.9	$	138.2
Reduction of revenue	389.3		373.9
Payments	(401.3)		(336.2)
Additions related to the Bayer Animal Health acquisition	49.6		—
Foreign currency translation adjustments	3.0		—
Ending balance	$	216.5	$	175.9

Disaggregation of Revenue

The following table summarizes our revenue disaggregated by product category for the years ended December 31:

	2020		2019		2018
Pet Health Disease Prevention	$	992.7	$	787.9	$	804.6
Pet Health Therapeutics	365.8		348.0		283.1
Farm Animal Future Protein & Health	734.1		745.1		711.2
Farm Animal Ruminants & Swine	1,100.5		1,110.3		1,174.0
Contract Manufacturing (1)	80.2		79.7		93.9
Total Revenue	$	3,273.3	$	3,071.0	$	3,066.8

(1)Represents revenue from arrangements in which we act as a contract manufacturer, including supply agreements associated with divestitures of products related to the acquisition of Bayer Animal Health. This category was previously called Strategic Exits.