Income Taxes (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current
U.S. federal	$ 0us-gaap_CurrentFederalTaxExpenseBenefit	$ 0us-gaap_CurrentFederalTaxExpenseBenefit	$ (4.6)us-gaap_CurrentFederalTaxExpenseBenefit
State and local	0	0	(0.1)
Foreign income and withholding taxes	0.6us-gaap_CurrentForeignTaxExpenseBenefit	0.6us-gaap_CurrentForeignTaxExpenseBenefit	(0.6)us-gaap_CurrentForeignTaxExpenseBenefit
Total current	0.6us-gaap_CurrentIncomeTaxExpenseBenefit	0.6us-gaap_CurrentIncomeTaxExpenseBenefit	(5.3)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred
U.S. federal	0	7.7	(4.8)
State and local	0	0	0
Foreign	(0.1)	(0.6)	(0.1)
Total deferred	(0.1)us-gaap_DeferredIncomeTaxExpenseBenefit	7.1us-gaap_DeferredIncomeTaxExpenseBenefit	(4.9)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision for (benefit from) income taxes from continuing operations	$ 0.5us-gaap_IncomeTaxExpenseBenefit	$ 7.7us-gaap_IncomeTaxExpenseBenefit	$ (10.2)us-gaap_IncomeTaxExpenseBenefit

Amount of current federal tax expense (benefit) pertaining to income (loss) from continuing operations.

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