Stock-Based Compensation Expense and Employee Benefit Plans - Stock Options Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Share-based Arrangements with Employees and Nonemployees [Abstract]
Unrecognized compensation cost related to unvested stock options	$ 0.8		$ 0.8		$ 6.2
Expense expected to be recognized over remaining weighted-average period			6 months		10 months 24 days
Cash received from stock options exercised			$ 3.6	$ 62.1
Class A common stock
Share-based Arrangements with Employees and Nonemployees [Abstract]
Granted (in shares)	0	0	0	0
Employee Stock Option
Share-based Arrangements with Employees and Nonemployees [Abstract]
Allocated share-based compensation expense	$ 1.2	$ 2.7	$ 6.7	$ 10.0