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Annual report pursuant to Section 13 and 15(d)

ASSET RETIREMENT OBLIGATIONS - Asset Retirement Obligation Roll-forward (Details)

v3.22.0.1
ASSET RETIREMENT OBLIGATIONS - Asset Retirement Obligation Roll-forward (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Asset Retirement Obligation [Roll Forward] Ìý Ìý
Asset Retirement Obligation at Beginning of Year $ 342 $ 165
Increase from acquisitions 116 172
Accretion expense 18 14
Remediation payments (29) (9)
Revision in estimated cash flows 2 Ìý
Asset Retirement Obligation at End of Year $ 449 $ 342