Income Taxes - Schedule of Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Current:
United States federal and state	$ 0.3	$ (11.7)	$ (1.2)
Foreign	10.7	10.9	7.9
Total current	11.0	(0.8)	6.7
Deferred:
United States federal and state	0.0	(2.4)	0.6
Foreign	(6.0)	6.6	(1.2)
Total deferred	(6.0)	4.2	(0.6)
Provision for income taxes	$ 5.0	$ 3.4	$ 6.1