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Capitalization (Tables) | 9 Months Ended
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Sep. 30, 2024
Capitalization [Abstract] |
Schedule of Carrying Amount and Fair Value of the FMBs | The carrying amount and fair value of the FMBs were as follows:
|  | (Thousands of Dollars)
|  | September 30, 2024 |  | December 31, 2023
|  | Carrying |  | Fair |  | Carrying |  | Fair
|  | Amount |  | Value |  | Amount |  | Value
FMBs |  | $ | 129,602 |  |  | $ | 127,760 |  |  | $ | 133,374 |  |  | $ | 131,745 |

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- References No definition available. + Details
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- Definition Tabular disclosure of the capitalization of the entity comprised of its long-term debt and equity instruments. The table may be detailed by subsidiary (legal entity) and include information by type of debt or equity detailed by instrument. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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