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ASSET RETIREMENT OBLIGATIONS (Tables) | 12 Months Ended
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Dec. 31, 2022
Environmental Remediation Obligations [Abstract] |
Schedule of Asset Retirement Obligations | The following is a summary of our asset retirement obligations:
| December 31,
(In millions) | 2022 |  | 2021
Asset retirement obligations 1 | $ | 520 |  |  | $ | 449 |
Less: current portion | 21 |  |  | 35 |
Long-term asset retirement obligations | $ | 499 |  |  | $ | 414 |
1 Includes $277 million and $293 million related to our active operations as of December 31, 2022 and 2021, respectively.
Roll-forward of Asset Retirement Obligation Liability | The following is a roll-forward of our asset retirement obligation liability:
(In millions) | 2022 |  | 2021 |
Asset retirement obligation as of January 1 | $ | 449 |  |  | $ | 342 |  |
Increase from acquisitions | — |  |  | 116 |  |
Reclassification from environmental obligations | 63 |  |  | — |  |
Accretion expense | 26 |  |  | 18 |  |
Remediation payments | (40) |  |  | (29) |  |
Revision in estimated cash flows | 22 |  |  | 2 |  |
Asset retirement obligation as of December 31 | $ | 520 |  |  | $ | 449 |  |

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- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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