Income Taxes - Schedule of Unrecognized Tax Benefits Reconciliation (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefits, beginning balance	$ 1.7	$ 2.1
Additions for tax positions of current years	0.0	0.3
Additions for tax positions of prior years	0.0	0.0
Reductions for tax positions of prior years	0.0	0.0
Settlements with taxing authorities	0.0	0.0
Reductions due to lapse of statute of limitations	(0.4)	(0.7)
Unrecognized tax benefits, ending balance	$ 1.3	$ 1.7