XML 56 R35.htm IDEA: XBRL DOCUMENT
v3.22.4

Asset Retirement Obligations (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2022
Asset Retirement Obligation Disclosure [Abstract] |
Schedule of Change in Asset Retirement Obligation | The following tables present the details of AROs which are included on the accompanying Consolidated Balance Sheets in Other deferred credits and other liabilities (in thousands):
|  | December 31, 2021 |  |  | Liabilities Incurred |  |  | Liabilities Settled |  |  | Accretion |  |  | Revisions to Prior Estimates |  |  | December 31, 2022 |
Electric Utilities |  | $ | 30,089 |  |  | $ | — |  |  | $ | (3,003 | ) |  | $ | 1,353 |  |  | $ | (856 | ) |  | $ | 27,583 |
Gas Utilities (a) |  |  | 45,455 |  |  |  | — |  |  |  | (158 | ) |  |  | 2,016 |  |  |  | 14,032 |  |  |  | 61,345 |
Total |  | $ | 75,544 |  |  | $ | — |  |  | $ | (3,161 | ) |  | $ | 3,369 |  |  | $ | 13,176 |  |  | $ | 88,928 |
|  | December 31, 2020 |  |  | Liabilities Incurred |  |  | Liabilities Settled |  |  | Accretion |  |  | Revisions to Prior Estimates |  |  | December 31, 2021 |
Electric Utilities |  | $ | 29,157 |  |  | $ | — |  |  | $ | (978 | ) |  | $ | 1,315 |  |  | $ | 595 |  |  | $ | 30,089 |
Gas Utilities (a) |  |  | 42,274 |  |  |  | — |  |  |  | (66 | ) |  |  | 1,733 |  |  |  | 1,514 |  |  |  | 45,455 |
Total |  | $ | 71,431 |  |  | $ | — |  |  | $ | (1,044 | ) |  | $ | 3,048 |  |  | $ | 2,109 |  |  | $ | 75,544 |
(a) The Revisions to Prior Estimates were primarily driven by changes in estimates associated with natural gas wells and compressor stations.

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

X
- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
Name: | us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration