Annual report pursuant to Section 13 and 15(d)

ASSET RETIREMENT OBLIGATIONS (Tables)

v3.20.4
ASSET RETIREMENT OBLIGATIONS (Tables)
 12 Months Ended
Dec. 31, 2020
Environmental Remediation Obligations [Abstract]  
Schedule of Asset Retirement Obligations
The following is a summary of our asset retirement obligations:
(In Millions)
December 31,
2020 2019
Asset retirement obligations1
$ 342  $ 165 
Less: current portion 7  2 
Long-term asset retirement obligations $ 335  $ 163 
1 Includes $190 million and $22 million related to our active operations as of December 31, 2020 and 2019, respectively.
Asset Retirement Obligations
The following is a roll-forward of our asset retirement obligation liability:
(In Millions)
2020 2019
Asset retirement obligation as of January 1 $ 165  $ 172 
Increase from acquisitions 172  — 
Accretion expense 14  10 
Remediation payments (9) (1)
Revision in estimated cash flows —  (16)
Asset retirement obligation as of December 31 $ 342  $ 165