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Quarterly report pursuant to Section 13 or 15(d)

ASSET RETIREMENT OBLIGATIONS (Tables)

v3.24.3
ASSET RETIREMENT OBLIGATIONS (Tables)
9 Months Ended
Sep. 30, 2024
Asset Retirement Obligation [Abstract] Ìý
Summary of Asset Retirement Obligations
The following is a summary of our asset retirement obligations:
(In millions) September 30,
2024
December 31,
2023
Asset retirement obligations1
$ 501Ìý $ 459Ìý
Less: current portion 42Ìý 15Ìý
Long-term asset retirement obligations $ 459Ìý $ 444Ìý
1 Includes $269 million and $259 million related to our active operations as of SeptemberÌý30, 2024 and DecemberÌý31, 2023, respectively.
Schedule of Change in Asset Retirement Obligation
The following is a roll-forward of our asset retirement obligations:
(In millions) 2024 2023
Asset retirement obligations as of January 1 $ 459Ìý $ 520Ìý
Accretion expense 17Ìý 19Ìý
Revision in estimated cash flows 49Ìý —Ìý
Remediation payments (24) (17)
Asset retirement obligations as of September 30 $ 501Ìý $ 522Ìý