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INCOME TAXES: Income Taxes Narrative (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Income Tax Disclosures |  |  |
Unrecognized Tax Benefits | $ 0.0 | $ 0.0 | $ 0.0
IDACORP | Investment Tax Credit Carryforward |  |  |
Income Tax Disclosures |  |  |
Additional ADITC amortization available for use | $ 52.0 |  |

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