Goodwill and Other Assets Schedule of Intangible Assets (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	$ 140.8	$ 154.3
Finite-Lived Intangible Assets, Accumulated Amortization	(75.6)	(94.3)
Intangible Assets, Net (Including Goodwill)	65.2	60.0
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	88.2	102.1
Finite-Lived Intangible Assets, Accumulated Amortization	(46.5)	(65.8)
Intangible Assets, Net (Including Goodwill)	41.7	36.3
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible Assets, Gross (Excluding Goodwill)	52.6	52.2
Finite-Lived Intangible Assets, Accumulated Amortization	(29.1)	(28.5)
Intangible Assets, Net (Including Goodwill)	$ 23.5	$ 23.7