Stock-Based Compensation and Other Employee Benefit Plans - Narrative (Details) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Stock-Based Compensation and Other Employee Benefit Plans [Line Items]
Stock-based compensation plans, number of shares available for future grant (in shares)	2,752		2,752
Non-cash stock-based compensation expense	$ 7.2	$ 5.7	$ 24.3	$ 18.9
Stock-based compensation, income tax benefits	$ 1.1	$ 0.9	12.9	4.3
Tax benefit (expense), share-based payment arrangement			$ (8.8)	$ (0.9)