Quarterly report pursuant to Section 13 or 15(d)

ASSET RETIREMENT OBLIGATIONS (Tables)

v3.21.2
ASSET RETIREMENT OBLIGATIONS (Tables)
9 Months Ended
Sep. 30, 2021
Asset Retirement Obligation [Abstract]  
Summary Of Asset Retirement Obligations
The following is a summary of our asset retirement obligations:
(In Millions)
September 30,
2021
December 31,
2020
Asset retirement obligations1
$ 392  $ 342 
Less: current portion 25 
Long-term asset retirement obligations $ 367  $ 335 
1 Includes $236 million and $190 million related to our active operations as of September 30, 2021 and December 31, 2020, respectively.
Schedule of Change in Asset Retirement Obligation
The following is a roll forward of our asset retirement obligation liability:
(In Millions)
2021 2020
Asset retirement obligation as of January 1 $ 342  $ 165 
Increase from acquisitions 57  17 
Accretion expense 13 
Remediation payments (20) (4)
Asset retirement obligation as of September 30 $ 392  $ 186