Goodwill and Intangible Assets (Goodwill) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Balance, beginning	$ 103.0	$ 104.6
Foreign currency translation	4.7	(1.6)
Balance, ending	107.7	103.0
Proprietary Products [Member]
Goodwill [Roll Forward]
Balance, beginning	73.7	75.1
Foreign currency translation	3.9	(1.4)
Balance, ending	77.6	73.7
Contract-Manufactured Products [Member]
Goodwill [Roll Forward]
Balance, beginning	29.3	29.5
Foreign currency translation	0.8	(0.2)
Balance, ending	$ 30.1	$ 29.3