Restructuring and Other Expense - Components of Restructuring and Other Expense for Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Restructuring and Related Activities [Abstract]
Severance and related	$ 0.6	$ 5.1
Total restructuring	0.6	5.1
Acquisition and integration related costs	0.0	0.5
Pension settlement/curtailment	2.9	1.6
Asset disposals / write down	0.1	24.6
Other	4.0	4.7
Other Cost and Expense, Operating	7.0	31.4
Total	$ 7.6	$ 36.5