Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2019 USD ($) segment	Sep. 30, 2018 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			2
Restructuring and related charges	$ 1.8	$ 1.2	$ 3.8	$ 6.7
Argentina currency devaluation	1.0	1.1	1.0	1.1
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	456.1	431.7	1,369.3	1,294.9
Total operating (loss) profit	67.3	60.8	218.5	174.5
Interest expense	2.1	2.0	6.4	6.1
Interest income	(1.0)	(0.5)	(2.5)	(1.4)
Other nonoperating income	1.3	(1.8)	0.2	(5.1)
Income before income taxes	64.9	61.1	214.4	174.9
Proprietary Products [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	345.2	325.2	1,045.9	997.4
Total operating (loss) profit	72.9	68.2	238.7	202.7
Contract-Manufactured Products [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	111.1	106.7	323.6	297.7
Total operating (loss) profit	11.6	11.2	33.5	29.7
Intersegment sales elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	(0.2)	(0.2)	(0.2)	(0.2)
Corporate [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating (loss) profit	(14.4)	(16.3)	(48.9)	(50.1)
Other unallocated items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating (loss) profit	$ (2.8)	$ (2.3)	$ (4.8)	$ (7.8)