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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] Ìý
Schedule of Asset Retirement Obligations
The following is a summary of our asset retirement obligations:
(In Millions)
December 31,
2021 2020
Asset retirement obligations1
$ 449Ìý $ 342Ìý
Less: current portion 35Ìý 7Ìý
Long-term asset retirement obligations $ 414Ìý $ 335Ìý
1 Includes $293 million and $190 million related to our active operations as of DecemberÌý31, 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 $ 342Ìý $ 165Ìý
Increase from acquisitions 116Ìý 172Ìý
Accretion expense 18Ìý 14Ìý
Remediation payments (29) (9)
Revision in estimated cash flows 2Ìý —Ìý
Asset retirement obligation as of December 31 $ 449Ìý $ 342Ìý