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INCOME TAXES: Income Taxes Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
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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Income Tax Expense [Line Items]

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- Definition

The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
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Amount of unrecognized tax benefits.

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-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
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