Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations		20.70%	28.20%
Tax expense on gain from commercial settlement		$ 0.9
Tax benefits related to restructuring expense		9.5	$ 1.2
Tax Benefit Associated with Merger and Acquisition Expense		0.2	0.3
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount		0.4
Effective rate reconciliation, measurement period adjustments due to the Tax Act	$ 6.6	20.0
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount		21.6
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount		11.3	$ 11.7
Deferred Tax Assets, Net	$ 170.9	$ 170.9		$ 121.2