XML 65 R49.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Note 11 - Commitments and Contingencies (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Notes Tables |
Schedule of Asset Retirement Obligations [Table Text Block] |
|  | For the Year Ended December 31, |
(in millions) |  |  | 2023 |  |  |  | 2022 |
Asset Retirement Obligations at start of period |  | $ | 43 |  |  | $ | 42 |
Liabilities incurred in the current period |  |  | — |  |  |  | 1 |
Liabilities settled in the current period |  |  | — |  |  |  | (2 | )
Revision in estimated cash flows |  |  | — |  |  |  | 2 |
Asset Retirement Obligations at end of period |  | $ | 43 |  |  | $ | 43 |

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