Segment Information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			2
Restructuring and related charges	$ 2.2		$ 5.5
Venezuela deconsolidation	0.0	$ (11.1)	0.0	$ (11.1)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	447.5	397.6	863.2	785.3
Total operating (loss) profit	60.3	42.0	113.7	102.5
Interest expense	2.2	2.2	4.1	4.3
Interest income	(0.3)	(0.3)	(0.9)	(0.6)
Other nonoperating income	(1.7)	(0.6)	(3.3)	(1.4)
Income before income taxes	60.1	40.7	113.8	100.2
Net periodic benefit cost	1.0	2.0	2.2	3.9
Service cost	2.7	2.6	5.5	5.3
Proprietary Products [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	346.0	312.8	672.2	621.6
Total operating (loss) profit	71.7	56.7	134.5	121.8
Contract-Manufactured Products [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	101.5	84.9	191.0	164.0
Total operating (loss) profit	9.0	10.5	18.5	19.3
Intersegment sales elimination [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net sales	0.0	(0.1)	0.0	(0.3)
Corporate [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating (loss) profit	(18.2)	(14.1)	(33.8)	(27.5)
Other unallocated items [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total operating (loss) profit	(2.2)	(11.1)	(5.5)	(11.1)
Accounting Standards Update 2017-07 [Member]
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Net benefit cost components other than service cost	$ 1.7	$ 0.6	$ 3.3	$ 1.4