Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income tax (benefit) expense	$ (23.9)	$ 14.3		$ (42.6)	$ 27.6
Effective tax rate	30.90%	28.50%	29.00%	29.40%	29.00%