Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	$ 10.8	$ 6.0	$ 21.5	$ 15.1
Capitalized cost during the period	(1.6)	0.0	(3.2)	0.0
Amortization of capitalized cost during the period	1.6	0.0	3.5	0.0
Total stock-based compensation expense	10.8	6.0	21.8	15.1
Stock option awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	5.0	2.2	10.1	5.1
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	2.2	1.7	5.4	4.9
Performance share awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation cost incurred	$ 3.6	$ 2.1	$ 6.0	$ 5.1