v3.26.1
Segment Information - Reconciliation of Segment Adjusted EBITDA from Segments to Consolidated Income Before Income Taxes (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]    
Segment Adjusted EBITDA $ 213 $ 223
Other non-reportable segment Adjusted EBITDA 3 1
Corporate expenses (47) (57)
Interest expense, net (69) (66)
Depreciation and amortization (79) (88)
Non-operating pension and other post-retirement employee benefit income 2 2
Exchange gains (losses), net 1 (3)
Restructuring, asset-related, and other charges (13) (21)
Loss on extinguishment of debt (9) 0
Gain on sales of assets and businesses, net 0 1
Transaction costs (2) (1)
Qualified spend recovery 5 9
Litigation-related charges (20) 0
Environmental charges (7)  
Loss before income taxes (22) 0
Titanium Technologies [Member]    
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]    
Segment Adjusted EBITDA 18 50
Thermal & Specialized Solutions [Member]    
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]    
Segment Adjusted EBITDA 190 141
Advanced Performance Materials [Member]    
Segment, Reconciliation of Other Items from Segments to Consolidated [Line Items]    
Segment Adjusted EBITDA $ 5 $ 32