Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Provision for income taxes	$ 4.0	$ 0.7	$ 8.2	$ 2.6
Unrecognized tax benefits	$ 20.2		$ 20.2		$ 20.1