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Regulatory Matters: Winter Storm Uri (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | $ 796,599 | $ 278,258
Winter Storm Uri |  |
Public Utilities, General Disclosures [Line Items] |  |
Amount Recovered Through Regulatory Mechanism | 40,000 |
Storm Costs |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | 509,025 | 0
Storm Costs | Winter Storm Uri |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | $ 546,000 |
Regulatory Asset, Amortization Period | 3 years 6 months |
Carrying Costs | Winter Storm Uri |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | $ 4,100 |
Deferred gas cost adjustments |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | 9,488 | $ 3,200
Deferred gas cost adjustments | Winter Storm Uri |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory assets | $ 13,000 |

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- Definition Amortization period for the recovery of regulatory asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The amount for the individual regulatory asset as itemized in a table of regulatory assets as of the end of the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
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