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Goodwill and Other Intangible Assets, net - Intangible Assets by Segments (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Acquired Finite-Lived Intangible Assets [Line Items]    
Other intangibles, net $ 278.8 $ 336.1
Performance Materials    
Acquired Finite-Lived Intangible Assets [Line Items]    
Other intangibles, net 1.2 1.5
Performance Chemicals    
Acquired Finite-Lived Intangible Assets [Line Items]    
Other intangibles, net 102.5 137.5
Advanced Polymer Technologies segment    
Acquired Finite-Lived Intangible Assets [Line Items]    
Other intangibles, net $ 175.1 $ 197.1