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Fair Value - Schedule of Activity For Energy Commodity Derivative Assets (Liabilities) Measured At Fair Value Using Significant Unobservable Inputs (Level 3) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Other Nonoperating Income (Expense) |  | Other Nonoperating Income (Expense) |
Level 3 [Member] |  |  |  |
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning Balance | $ 39,952 | $ (6,197) | $ 36,550 | $ (7,771)
Included in regulatory assets/liabilities | (1,016) | 5,196 | 5,767 | 7,695
Recognized in net income | (2,561) |  | (5,198) |
Purchases |  |  | 2,367 |
Settlements | 357 | (1,288) | 246 | (2,213)
Other |  |  | (3,000) |
Ending Balance | 36,732 | (2,289) | 36,732 | (2,289)
Natural Gas Exchange Agreements [Member] | Level 3 [Member] |  |  |  |
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning Balance | (11,062) | (6,197) | (17,734) | (7,771)
Included in regulatory assets/liabilities | (1,016) | 5,196 | 5,767 | 7,695
Settlements | 357 | (1,288) | 246 | (2,213)
Ending Balance | (11,721) | $ (2,289) | (11,721) | $ (2,289)
Equity Investment [Member] | Level 3 [Member] |  |  |  |
Fair Value Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning Balance | 51,014 |  | 54,284 |
Recognized in net income | (2,561) |  | (5,198) |
Purchases and debt conversions |  |  | 2,367 |
Other |  |  | (3,000) |
Ending Balance | $ 48,453 |  | $ 48,453 |

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- Definition Fair value measurement with unobservable inputs reconciliation recurring basis other. + References No definition available. + Details
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- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Realized And Unrealized Gains Losses Included In Regulatory Assets + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of gain (loss) recognized in income from derivative asset (liability) after deduction of derivative liability (asset), measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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