XML 62 R36.htm IDEA: XBRL DOCUMENT
v3.23.3

ASSET RETIREMENT OBLIGATIONS (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2023
Asset Retirement Obligation [Abstract] |
Summary of Asset Retirement Obligations | The following is a summary of our asset retirement obligations:
(In millions) | September 30, 2023 |  | December 31, 2022
Asset retirement obligations 1 | $ | 522 |  |  | $ | 520 |
Less: current portion | 17 |  |  | 21 |
Long-term asset retirement obligations | $ | 505 |  |  | $ | 499 |
1 Includes $275 million and $277 million related to our active operations as of September 30, 2023 and December 31, 2022, respectively.
Schedule of Change in Asset Retirement Obligation | The following is a roll forward of our asset retirement obligation liability:
(In millions) | 2023 |  | 2022
Asset retirement obligation as of January 1 | $ | 520 |  |  | $ | 449 |
Accretion expense | 19 |  |  | 21 |
Reclassification from environmental obligations | — |  |  | 63 |
Revision in estimated cash flows | — |  |  | 22 |
Remediation payments | (17) |  |  | (33) |
Asset retirement obligation as of September 30 | $ | 522 |  |  | $ | 522 |

X
- References No definition available. + Details
Name: | us-gaap_AssetRetirementObligationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Paragraph 1 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_ScheduleOfAssetRetirementObligationsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration