ÐÇ¿Õ´«Ã½

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] Ìý
Schedule of Asset Retirement Obligations
The following is a summary of our asset retirement obligations:
(In Millions)
December 31,
2020 2019
Asset retirement obligations1
$ 342Ìý $ 165Ìý
Less: current portion 7Ìý 2Ìý
Long-term asset retirement obligations $ 335Ìý $ 163Ìý
1 Includes $190 million and $22 million related to our active operations as of DecemberÌý31, 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 $ 165Ìý $ 172Ìý
Increase from acquisitions 172Ìý —Ìý
Accretion expense 14Ìý 10Ìý
Remediation payments (9) (1)
Revision in estimated cash flows —Ìý (16)
Asset retirement obligation as of December 31 $ 342Ìý $ 165Ìý