Stockholders’ Equity and Stock-Based Compensation - Stock Appreciation Rights (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense (reduction to expense)	$ 12.9	$ 35.2	$ 39.0	$ 71.4
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			4 years
Liability for cash-settled awards	0.4		$ 0.4		$ 5.8
Unrecognized compensation cost, other awards	0.1		$ 0.1
Unamortized compensation costs, weighted average period of recognition			1 year 4 months 24 days
Stock-based compensation expense (reduction to expense)	$ (0.4)	$ (0.7)	$ (4.9)	(4.4)
Amounts paid on cash-settled awards			$ 0.1	$ 0.6