v3.26.1
Restructuring, Asset-Related, and Other Charges - Schedule of Restructuring Program (Details) - USD ($)
$ in Millions
 1 Months Ended 3 Months Ended 267 Months Ended
Jan. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   $ 9 $ 13  
Decommissioning and other charges   3 8  
Total restructuring and other charges   12 21  
Asset-related charges   1 12  
Total restructuring, asset-related, and other charges   13 33  
SPS CapstoneTM Exit [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges     13  
Decommissioning and other charges $ 4 3 2  
Asset-related charges   1 12  
Total restructuring, asset-related, and other charges   4    
2024 Restructuring Program [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges       $ 19
Decommissioning and other charges     1 5
Asset-related charges       $ 27
2026 Restructuring Program [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   9    
Titanium Technologies Transformation Plan [Member]        
Restructuring Cost and Reserve [Line Items]        
Decommissioning and other charges     5  
Operating Segments [Member] | Thermal & Specialized Solutions [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   1    
Total restructuring and other charges   1    
Total restructuring, asset-related, and other charges   1    
Operating Segments [Member] | Titanium Technologies [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   5    
Decommissioning and other charges   0 5  
Total restructuring and other charges   5 5  
Total restructuring, asset-related, and other charges   5 5  
Operating Segments [Member] | Advanced Performance Materials [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   1 13  
Decommissioning and other charges   3 3  
Total restructuring and other charges   4 16  
Asset-related charges   1 12  
Total restructuring, asset-related, and other charges   5 28  
Operating Segments [Member] | SPS CapstoneTM Exit [Member] | Advanced Performance Materials [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges     13  
Decommissioning and other charges   3 2  
Asset-related charges   1 12  
Operating Segments [Member] | 2024 Restructuring Program [Member] | Advanced Performance Materials [Member]        
Restructuring Cost and Reserve [Line Items]        
Decommissioning and other charges     1  
Operating Segments [Member] | 2026 Restructuring Program [Member] | Thermal & Specialized Solutions [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   1    
Operating Segments [Member] | 2026 Restructuring Program [Member] | Titanium Technologies [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   5    
Operating Segments [Member] | 2026 Restructuring Program [Member] | Advanced Performance Materials [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   1    
Operating Segments [Member] | Titanium Technologies Transformation Plan [Member] | Titanium Technologies [Member]        
Restructuring Cost and Reserve [Line Items]        
Decommissioning and other charges     $ 5  
Corporate [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   2    
Total restructuring and other charges   2    
Total restructuring, asset-related, and other charges   2    
Corporate [Member] | 2026 Restructuring Program [Member]        
Restructuring Cost and Reserve [Line Items]        
Employee separation charges   $ 2