Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 4.4	$ 0.6	$ 4.9	$ (5.1)
Increase in unrecognized tax benefits	$ 4.0		7.5
Unrecognized tax benefits that would impact effective tax rate			1.4
Decrease in unrecognized tax benefits for expiration of statute of limitations			$ 0.2