Income Taxes (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)
Income Tax Disclosure [Abstract]
Effective tax rate	36.30%	31.80%
Net impact of U.S. Tax Act	$ 1.2	$ 0.0
Decrease in income tax rate	0.0760