Goodwill and Other Assets Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 129.7	$ 129.1
Finite-Lived Intangible Assets, Accumulated Amortization	(63.3)	(64.8)
Intangible Assets, Net (Including Goodwill)	66.4	64.3
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	92.4	92.4
Finite-Lived Intangible Assets, Accumulated Amortization	(46.6)	(48.5)
Intangible Assets, Net (Including Goodwill)	45.8	43.9
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	37.3	36.7
Finite-Lived Intangible Assets, Accumulated Amortization	(16.7)	(16.3)
Intangible Assets, Net (Including Goodwill)	$ 20.6	$ 20.4