XML 43 R31.htm IDEA: XBRL DOCUMENT
v3.25.2

Fair Value Measurements (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2025
Fair Value Disclosures [Abstract] |
Schedule of Fair Value Measurements of Asset and Liability Instruments | The carrying amounts of derivative instruments and environmental credit obligations at June 30, 2025 and December 31, 2024 were as follows:
|  |  |  | Fair Value by Input Level
|  | Carrying Amount |  | Level 1 |  | Level 2 |  | Level 3
|  | (In millions)
June 30, 2025 |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |
NYMEX futures contracts |  | $ | 1 |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |
Commodity forward contracts |  | 2 |  |  | — |  |  | 2 |  |  | — |
Total assets |  | $ | 3 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |
Commodity forward contracts |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |
Foreign currency forward contracts |  | 10 |  |  | — |  |  | 10 |  |  | — |
Environmental credit obligations |  | 103 |  |  | — |  |  | 103 |  |  | — |
Total liabilities |  | $ | 114 |  |  | $ | — |  |  | $ | 114 |  |  | $ | — |
|  |  |  | Fair Value by Input Level
|  | Carrying Amount |  | Level 1 |  | Level 2 |  | Level 3
|  | (In millions)
December 31, 2024 |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |
Commodity forward contracts |  | $ | 1 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |
Foreign currency forward contracts |  | 18 |  |  | — |  |  | 18 |  |  | — |
Total assets |  | $ | 19 |  |  | $ | — |  |  | $ | 19 |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |
NYMEX futures contracts |  | $ | 1 |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |
Commodity forward contracts |  | 1 |  |  | — |  |  | 1 |  |  | — |
Environmental credit obligations |  | 10 |  |  | — |  |  | 10 |  |  | — |
Total liabilities |  | $ | 12 |  |  | $ | 1 |  |  | $ | 11 |  |  | $ | — |

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

X
- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration