Income Taxes - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective tax rate attributable to continuing operations	35.30%	24.50%	35.50%	30.70%
Increase in unrecognized tax benefits			$ 4.4
Amount of unrecognized tax benefits	$ 17.5		17.5		$ 13.1
Gross accrued interest and penalties on unrecognized tax benefits	1.2		1.2		0.7
Unrecognized income tax benefits that, if recognized, would affect the effective tax rates	18.1		18.1		13.2
Unrecognized income tax benefits that, if recognized, would affect the effective tax rates , interest and penalties	$ 0.8		$ 0.8		$ 0.5