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Property, Plant and Equipment Property, Plant and Equipment (Tables) (Details) - USD ($)
$ in Millions
Jun. 30, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 3.7 $ 3.7
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (0.3) (0.2)
Property, Plant and Equipment, Net $ 3.4 $ 3.5