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]  
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
$ 501  $ 459 
Less: current portion 42  15 
Long-term asset retirement obligations $ 459  $ 444 
1 Includes $269 million and $259 million related to our active operations as of September 30, 2024 and December 31, 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 $ 459  $ 520 
Accretion expense 17  19 
Revision in estimated cash flows 49  — 
Remediation payments (24) (17)
Asset retirement obligations as of September 30 $ 501  $ 522