Stock Based Compensation - Components of Equity-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 10.7	$ 7.6
Expected tax benefit	1.2	0.9
Restricted stock and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	7.4	3.1
Expected tax benefit	1.1	0.5
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	1.0	1.5
Expected tax benefit	0.1	0.4
Incentive units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2.3	$ 3.0