XML 92 R47.htm IDEA: XBRL DOCUMENT
v3.25.0.1

ASSET RETIREMENT OBLIGATIONS (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Environmental Remediation Obligations [Abstract] |
Schedule of Asset Retirement Obligations | The following is a summary of our asset retirement obligations:
| December 31,
(In millions) | 2024 |  | 2023
Asset retirement obligations 1 | $ | 526 |  |  | $ | 459 |
Less: current portion | 25 |  |  | 15 |
Long-term asset retirement obligations | $ | 501 |  |  | $ | 444 |
1 Includes $302 million and $259 million related to our active operations as of December 31, 2024 and 2023, respectively.
Roll-forward of Asset Retirement Obligation Liability | The following is a roll-forward of our asset retirement obligation:
(In millions) | 2024 |  | 2023 |
Asset retirement obligation as of January 1 | $ | 459 |  |  | $ | 520 |  |
Increase from Stelco Acquisition | 20 |  |  | — |  |
Decrease from sale of business | — |  |  | (76) |  |
Accretion expense | 22 |  |  | 26 |  |
Remediation payments | (33) |  |  | (21) |  |
Revision in estimated cash flows | 58 |  |  | 10 |  |
Asset retirement obligation as of December 31 | $ | 526 |  |  | $ | 459 |  |
Schedule of Environmental Obligations | The following is a summary of our environmental obligations:
| December 31,
(In millions) | 2024 |  | 2023
Environmental obligations | $ | 114 |  |  | $ | 134 |
Less: current portion | 14 |  |  | 21 |
Long-term environmental obligations | $ | 100 |  |  | $ | 113 |

X
- References No definition available. + Details
Name: | us-gaap_EnvironmentalRemediationObligationsAbstract
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

X
- Definition Tabular disclosure of environmental loss contingencies by individual site. Does not include loss contingencies that are not environmental in nature. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480102/450-20-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.Y.Q2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480102/450-20-S99-1 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481931/410-30-50-10 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481931/410-30-50-10 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Subparagraph (d)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481931/410-30-50-10 + Details
Name: | us-gaap_ScheduleOfEnvironmentalLossContingenciesBySiteTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration