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Business Segment Information: Segment Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Segment Reporting, Asset Reconciling Item |  |
Total Assets | $ 9,618,230 | $ 9,131,896
Corporate and Other |  |
Segment Reporting, Asset Reconciling Item |  |
Total Assets | 110,227 | 88,864
Electric Utilities |  |
Segment Reporting, Asset Reconciling Item |  |
Total Assets | 3,929,721 | 3,796,662
Gas Utilities |  |
Segment Reporting, Asset Reconciling Item |  |
Total Assets | $ 5,578,282 | $ 5,246,370

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. 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