Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 33.6	$ 39.3	$ 102.3	$ 30.9
Income (Loss) before Income Taxes and Equity Income of Unconsolidated Entities	93.5	$ 91.9	274.3	$ 77.1
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Net Operating Losses	$ 455.0		$ 455.0