Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations	19.40%	27.90%
Tax expense on gain from commercial settlement	$ 0.9
Tax benefits related to restructuring expense	8.2
Tax Benefit Associated with Merger and Acquisition Expense	0.3
Effective rate reconciliation, measurement period adjustments due to the Tax Act	13.4
Effective Income Tax Rate Reconciliation, Tax Credit, Foreign, Amount	21.1
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	9.5	$ 6.6
Deferred Tax Assets, Net	$ 170.5		$ 121.2