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ASSET RETIREMENT OBLIGATIONS - Environmental Obligations Disclosure (Details) - USD ($)
$ in Millions
Jun. 30, 2025
Dec. 31, 2024
Environmental Remediation Obligations [Abstract]    
Accrual for Environmental Loss Contingencies $ 112 $ 114
Accrued Environmental Loss Contingencies, Current 12 14
Accrued Environmental Loss Contingencies, Noncurrent $ 100 $ 100