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ENVIRONMENTAL MATTERS AND ASSET RETIREMENT OBLIGATIONS (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2025
Dec. 31, 2024
Accrual for Environmental Loss Contingencies [Roll Forward]    
Beginning of period $ 284  
End of period 322 $ 284
Accrual for Environmental Loss Contingencies, Balance Sheet Classification [Abstract]    
Accrued Environmental Loss Contingencies, Current 20 15
Accrued Environmental Loss Contingencies, Noncurrent 302 269
Environmental Remediation [Member]    
Accrual for Environmental Loss Contingencies [Roll Forward]    
Beginning of period 252 252
Changes in estimates recognized in earnings and other 47 13
Cash reductions (10) (13)
End of period $ 289 252
Expected Payment Period of Environmental Contingencies approximately 30 years  
Environmental Remediation [Member] | Minimum [Member]    
Site Contingency [Line Items]    
Loss Contingency, Estimate of Possible Loss $ 289 252
Environmental Remediation [Member] | Maximum [Member]    
Site Contingency [Line Items]    
Loss Contingency, Estimate of Possible Loss 499 495
Environmental ARO [Member]    
Site Contingency [Line Items]    
Best Estimate Accrued to-date For Asset Retirement Obligation 33 32
Non Environmental ARO [Member]    
Site Contingency [Line Items]    
Best Estimate Accrued to-date For Asset Retirement Obligation $ 56 $ 53