Goodwill and Other Intangible Assets, Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill [Roll Forward]
Balance Beginning	$ 913.6	$ 914.8
Change in Goodwill Relating to [Abstract]
Foreign exchange translation	0.2	(1.2)
Total changes	0.2	(1.2)
Balance Ending	913.8	913.6
Consumer & Specialties [Member]
Goodwill [Roll Forward]
Balance Beginning	345.2	346.4
Change in Goodwill Relating to [Abstract]
Foreign exchange translation	0.5	(1.2)
Total changes	0.5	(1.2)
Balance Ending	345.7	345.2
Engineered Solutions [Member]
Goodwill [Roll Forward]
Balance Beginning	568.4	568.4
Change in Goodwill Relating to [Abstract]
Foreign exchange translation	(0.3)	0.0
Total changes	(0.3)	0.0
Balance Ending	$ 568.1	$ 568.4