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Research and Development Expense - Summary of R&D Expense by Segment and Corporate and Other (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Research and Development [Line Items]      
Total research and development expense $ 109 $ 108 $ 118
Operating Segments [Member] | Titanium Technologies [Member]      
Research and Development [Line Items]      
Total research and development expense 28 32 34
Operating Segments [Member] | Thermal & Specialized Solutions [Member]      
Research and Development [Line Items]      
Total research and development expense 29 25 25
Operating Segments [Member] | Advanced Performance Materials [Member]      
Research and Development [Line Items]      
Total research and development expense 50 48 54
Operating Segments [Member] | Other Segment [Member]      
Research and Development [Line Items]      
Total research and development expense 1 1 1
Corporate [Member]      
Research and Development [Line Items]      
Total research and development expense $ 1 $ 2 $ 4