Supplemental Balance Sheet Information - Schedule of Additional Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Inventories
Finished goods	$ 0.0	$ 0.9
Raw materials and supplies	4.1	7.2
Total inventories	4.1	8.1
Property, Plant and Equipment
Property, plant, and equipment, gross	12.7	12.7
Less accumulated depreciation	(9.9)	(8.5)
Property, plant and equipment, net	2.8	4.2
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Assets held for sale
Total assets held for sale	0.0	11.0
Buildings and Leasehold Improvements
Property, Plant and Equipment
Property, plant, and equipment, gross	3.3	3.3
Machinery and Equipment
Property, Plant and Equipment
Property, plant, and equipment, gross	9.4	9.4
Land and Building | Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations
Assets held for sale
Corporate headquarter facility	$ 0.0	$ 11.0