Stock-Based Compensation and Other Employee Benefit Plans - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Stock-Based Compensation and Other Employee Benefit Plans [Line Items]
Stock-based compensation plans, number of shares available for future grant (in shares)		4,435,000		4,435,000
Non-cash stock-based compensation expense		$ 7.3	$ 7.2	$ 24.0	$ 24.3
Stock-based compensation, income tax benefits		$ 1.2	$ 1.1	4.2	12.9
Stock-based compensation, vested awards, net income tax (shortfall) benefit				$ (0.1)	$ 8.8
2013 Incentive Plan
Stock-Based Compensation and Other Employee Benefit Plans [Line Items]
Share-based compensation, number of additional shares authorized	1,200,000
2011 Incentive Plan
Stock-Based Compensation and Other Employee Benefit Plans [Line Items]
Share-based compensation, number of additional shares authorized	1,000,000