Quarterly report [Sections 13 or 15(d)]

ASSET RETIREMENT OBLIGATIONS - Asset Retirement Obligation Disclosure (Details)

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ASSET RETIREMENT OBLIGATIONS - Asset Retirement Obligation Disclosure (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Asset Retirement Obligation [Roll Forward]    
Asset retirement obligation at beginning of period $ 526 $ 459
Accretion expense 15 11
Revision in estimated cash flows 5 50
Remediation payments (12) (14)
Asset retirement obligation at end of period $ 534 $ 506