v3.26.1
ASSETS IMPAIRMENTS AND RESTRUCTURING (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Restructuring Cost and Reserve [Line Items]        
Severance Costs $ 1 $ 10 $ 7 $ 11
Business Exit Costs 0 3 3 11
Restructuring, Settlement and Impairment Provisions 1 13 10 22
Restructuring Charge [Roll Forward]        
Balance at Beginning of Period     34  
Provision / Adjustments     10  
Restructuring Reserve, Accrual Adjustment     0  
Cash Reductions     (19)  
Balance at End of Period 25   25  
Corporate, Non-Segment [Member]        
Restructuring Cost and Reserve [Line Items]        
Restructuring, Settlement and Impairment Provisions (1) (13) (10) (22)
Facility Closing [Member]        
Restructuring Charge [Roll Forward]        
Balance at Beginning of Period     8  
Provision / Adjustments     3  
Restructuring Reserve, Accrual Adjustment     0  
Cash Reductions     (5)  
Balance at End of Period 6   6  
Employee Severance [Member]        
Restructuring Charge [Roll Forward]        
Balance at Beginning of Period     26  
Provision / Adjustments     7  
Restructuring Reserve, Accrual Adjustment     0  
Cash Reductions     (14)  
Balance at End of Period 19   19  
cost reduction initiatives        
Restructuring Cost and Reserve [Line Items]        
Severance Costs   10   10
growth and profitability improvement initiatives | Corporate, Non-Segment [Member]        
Restructuring Cost and Reserve [Line Items]        
Business Exit Costs   $ 3   8
closure of a heat-transfer fluids production line | Additives And Functional Products [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance Costs       1
Business Exit Costs       $ 3
closure of a performance films production line in Germany | Advanced Materials [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance Costs     3  
Business Exit Costs     3  
Restructuring Charge [Roll Forward]        
Inventory Write-down     3  
Corporate Cost Actions | Corporate, Non-Segment [Member]        
Restructuring Cost and Reserve [Line Items]        
Severance Costs $ 1   $ 4