Income Taxes - Schedule of Income Taxes and Provision for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income before income taxes:
U.S.	$ 128.5	$ 110.6	$ 21.7
International	(18.8)	39.2	0.3
Income before income taxes, and equity in earnings from affiliated companies	109.7	149.8	22.0
Current:
U.S.	38.3	28.3	5.4
International	6.5	6.4	3.1
Current income tax expense	44.8	34.7	8.5
Deferred:
U.S.	(17.0)	(8.9)	(2.3)
International	(15.7)	5.8	(0.3)
Deferred income tax benefit	(32.7)	(3.1)	(2.6)
Total income tax expense	$ 12.1	$ 31.6	$ 5.9