Goodwill and Intangible Assets (Intangible Assets by Major Class) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Schedule of Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	$ 80.0	$ 77.5
Finite-Lived Intangible Assets, Accumulated Amortization	(29.4)	(25.5)
Finite-Lived Intangible Assets, Net	50.6	52.0
Patents and Licensing [Member]
Schedule of Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	19.2	17.0
Finite-Lived Intangible Assets, Accumulated Amortization	(7.8)	(6.7)
Finite-Lived Intangible Assets, Net	11.4	10.3
In-Process Research and Development (IPR&D) [Member]
Schedule of Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	3.5	3.5
Finite-Lived Intangible Assets, Accumulated Amortization	(0.1)	0
Finite-Lived Intangible Assets, Net	3.4	3.5
Trademarks [Member]
Schedule of Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	12.1	12.0
Finite-Lived Intangible Assets, Accumulated Amortization	(1.0)	(0.8)
Finite-Lived Intangible Assets, Net	11.1	11.2
Customer Relationships [Member]
Schedule of Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	29.7	29.7
Finite-Lived Intangible Assets, Accumulated Amortization	(12.9)	(11.2)
Finite-Lived Intangible Assets, Net	16.8	18.5
Customer Contracts [Member]
Schedule of Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	11.6	11.4
Finite-Lived Intangible Assets, Accumulated Amortization	(3.7)	(3.1)
Finite-Lived Intangible Assets, Net	7.9	8.3
Noncompete Agreements [Member]
Schedule of Intangible Assets By Major Class [Line Items]
Finite-Lived Intangible Assets, Gross	3.9	3.9
Finite-Lived Intangible Assets, Accumulated Amortization	(3.9)	(3.7)
Finite-Lived Intangible Assets, Net	$ 0	$ 0.2