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Income Taxes Income Taxes (Taxes by Jurisdiction) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Current Income Tax Expense (Benefit)		$ (1.0)us-gaap_CurrentIncomeTaxExpenseBenefit	$ (1.8)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred income taxes	(2.4)us-gaap_DeferredIncomeTaxExpenseBenefit	0us-gaap_DeferredIncomeTaxExpenseBenefit	(84.7)us-gaap_DeferredIncomeTaxExpenseBenefit
Provision (benefit) for income taxes	(2.4)us-gaap_IncomeTaxExpenseBenefit	(1.0)us-gaap_IncomeTaxExpenseBenefit	(86.5)us-gaap_IncomeTaxExpenseBenefit
Domestic Tax Authority [Member]
Current Income Tax Expense (Benefit)		0	0
Deferred income taxes	(2.4)	0	(83.0)
State and Local Jurisdiction [Member]
Current Income Tax Expense (Benefit)		(1.0)	(1.8)
Deferred income taxes		0	(1.7)
Foreign Tax Authority [Member]
Current Income Tax Expense (Benefit)		0	0
Deferred income taxes		$ 0	$ 0

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

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