Goodwill and Intangible Assets (Intangible Assets by Major Class) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Schedule of Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	$ 78.1	$ 65.2
Finite-lived intangible assets, accumulated amortization	(48.3)	(44.9)
Finite-lived intangible assets, net	29.8	20.3
Patents and Licensing [Member]
Schedule of Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	21.5	19.6
Finite-lived intangible assets, accumulated amortization	(16.0)	(15.1)
Finite-lived intangible assets, net	5.5	4.5
In-Process Research and Development (IPR&D) [Member]
Schedule of Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	3.3	3.3
Finite-lived intangible assets, accumulated amortization	(1.5)	(1.2)
Finite-lived intangible assets, net	1.8	2.1
Trademarks [Member]
Schedule of Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	2.0	2.0
Finite-lived intangible assets, accumulated amortization	(1.8)	(1.8)
Finite-lived intangible assets, net	0.2	0.2
Customer Relationships [Member]
Schedule of Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	40.3	29.3
Finite-lived intangible assets, accumulated amortization	(21.6)	(20.0)
Finite-lived intangible assets, net	18.7	9.3
Customer Contracts [Member]
Schedule of Intangible Assets by Major Class [Line Items]
Finite-lived intangible assets, gross	11.0	11.0
Finite-lived intangible assets, accumulated amortization	(7.4)	(6.8)
Finite-lived intangible assets, net	$ 3.6	$ 4.2