Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Jun. 30, 2017	Sep. 30, 2017	Sep. 30, 2016
Operating Loss Carryforwards [Line Items]
Provision for income taxes	$ (14.5)	$ 2.5		$ 3.7	$ 9.8
Effective tax rate	44.60%	18.40%		9.80%	22.30%
Federal income tax rate				35.00%
Tax on undistributed foreign earnings	$ (2.9)	$ 0.0	$ 6.5	$ 3.6	$ 0.0
Foreign operating loss carryforwards				13.9
MEXICO
Operating Loss Carryforwards [Line Items]
Tax on undistributed foreign earnings	(7.5)
United Kingdom
Operating Loss Carryforwards [Line Items]
Tax on undistributed foreign earnings	4.6
Darex | Discontinued Operations
Operating Loss Carryforwards [Line Items]
Provision (benefit) for income taxes	$ 200.0	$ 7.1		$ 199.7	$ 20.0