Stock-Based Compensation - Summary of Compensation Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	$ 8.0	$ 7.6	$ 25.6	$ 24.4
Capitalized cost during the period	(0.7)	(1.1)	(2.5)	(3.4)
Amortization of capitalized cost during the period	0.7	1.1	2.6	3.6
Total stock-based compensation expense	8.0	7.6	25.7	24.6
Stock option awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	3.5	3.6	10.8	11.0
Performance share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	2.7	2.2	7.4	6.8
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	$ 1.8	$ 1.8	$ 7.4	$ 6.6