Supplemental Balance Sheet Information - Schedule of Other Current Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Accrued payroll	$ 2.6	$ 3.3
Deferred Revenue	6.7	6.2
Restructuring accruals	0.0	1.0
Levy Accruals	4.9	5.0
Other current liabilities	1.8	15.0
Total other current liabilities	$ 16.0	$ 30.5