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INCOME TAXES: Income Taxes Narrative (Details) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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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 | $ 70.9 |  |

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