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Intangibles (Net of Amortization) and Goodwill (Narrative) (Details) - USD ($)
Jun. 30, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount of intangibles and goodwill $ 763,467,000 $ 124,642,000
Accumulated goodwill impairment 0 $ 0
Petroleum Additives [Member]    
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount of intangibles and goodwill 124,000,000  
Specialty materials    
Finite-Lived Intangible Assets [Line Items]    
Net carrying amount of intangibles and goodwill $ 639,000,000  
Formulas And Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated economic life, in years 8 years  
Customer Bases [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated economic life, in years 17 years 6 months  
Customer Bases [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated economic life, in years 20 years  
Trademarks and Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Estimated economic life, in years 15 years