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ASSETS IMPAIRMENTS AND RESTRUCTURING (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Jun. 30, 2024
Restructuring Cost and Reserve [Line Items]      
Severance Costs $ 1 $ 11  
Business Exit Costs 8 0  
Restructuring, Settlement and Impairment Provisions 9 11  
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period 26 26 $ 26
Provision / Adjustments 9   51
Restructuring Reserve, Accrual Adjustment 0   (5)
Cash Reductions (12)   (46)
Balance at End of Period 23    
Corporate, Non-Segment [Member]      
Restructuring Cost and Reserve [Line Items]      
Restructuring, Settlement and Impairment Provisions (9) (11)  
Facility Closing [Member]      
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period 3 0 0
Provision / Adjustments 8   21
Restructuring Reserve, Accrual Adjustment 0   0
Cash Reductions (6)   (18)
Balance at End of Period 5    
Employee Severance [Member]      
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period 23 26 26
Provision / Adjustments 1   25
Restructuring Reserve, Accrual Adjustment 0   0
Cash Reductions (6)   (28)
Balance at End of Period 18    
Non-Cash Charges [Member]      
Restructuring Charge [Roll Forward]      
Balance at Beginning of Period 0 $ 0 0
Provision / Adjustments     5
Restructuring Reserve, Accrual Adjustment     5
Cash Reductions     $ 0
growth and profitability improvement initiatives | Corporate, Non-Segment [Member]      
Restructuring Cost and Reserve [Line Items]      
Business Exit Costs 5    
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