Revenue (Tables)

9 Months Ended

Sep. 30, 2019

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.:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Beginning balance	$	132.1	$	99.1	$	118.5	$	114.8
Reduction of revenue	75.9		53.5		222.2		154.2
Payments	(78.9)		(49.1)		(211.6)		(165.5)
Ending balance	$	129.1	$	103.5	$	129.1	$	103.5

Disaggregation of Revenue

The following table summarizes our revenue disaggregated by product category:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Companion Animal Disease Prevention	$	207.6	$	188.6	$	616.9	$	603.9
Companion Animal Therapeutics	87.6		80.5		252.4		211.1
Food Animal Future Protein & Health	191.5		162.8		534.5		502.1
Food Animal Ruminants & Swine	266.2		301.5		811.8		881.1
Strategic Exits(1)	18.4		27.7		68.4		69.3
Revenue	$	771.3	$	761.1	$	2,284.0	$	2,267.5

^{(1) Represents revenue from business activities we have either exited or made a strategic decision to exit.}