Annual report pursuant to Section 13 and 15(d)

ASSET RETIREMENT OBLIGATIONS (Tables)

v3.22.0.1
ASSET RETIREMENT OBLIGATIONS (Tables)
 12 Months Ended
Dec. 31, 2021
Environmental Remediation Obligations [Abstract]  
Schedule of Asset Retirement Obligations
The following is a summary of our asset retirement obligations:
(In Millions)
December 31,
2021 2020
Asset retirement obligations1
$ 449  $ 342 
Less: current portion 35  7 
Long-term asset retirement obligations $ 414  $ 335 
1 Includes $293 million and $190 million related to our active operations as of December 31, 2021 and 2020, respectively.
Roll-forward of Asset Retirement Obligation Liability
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 116  172 
Accretion expense 18  14 
Remediation payments (29) (9)
Revision in estimated cash flows 2  — 
Asset retirement obligation as of December 31 $ 449  $ 342