Income Taxes (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Income Tax Benefit related to reduction in valuation allowances	$ (17.1)	$ (14.6)
Income Tax Expense (Benefit) Arising During Interim Period		(13.1)
Recognition of Incremental Deferred Taxes During Period		(8.3)
Reduction of unrecognized tax benefits	$ (11.2)	$ (4.8)