Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 0.9	$ 1.6	$ 5.8	$ (3.5)
Increase in unrecognized tax benefits	4.7		12.3
Unrecognized tax benefits that would impact effective tax rate			2.2
Decrease in unrecognized tax benefits for expiration of statute of limitations	$ 0.8		$ 1.0