Quarterly report pursuant to Section 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
9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Asset Retirement Obligation [Roll Forward]    
Asset retirement obligation at beginning of period $ 520 $ 449
Accretion expense 19 21
Reclassification from environmental obligations 0 63
Revision in estimated cash flows 0 22
Remediation payments (17) (33)
Asset retirement obligation at end of period $ 522 $ 522