Income Taxes (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Effective income tax rate, continuing operations	27.90%	32.10%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	$ 6.6	$ 1.3
Tax benefits related to restructuring expense		5.4
Effective Income Tax Rate Reconciliation, Gain from customer contract expiration, Percent		$ 2.6