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OTHER INCOME AND EXPENSE Other Income and Expense Level 3 (Tables) | 12 Months Ended
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Dec. 31, 2025
Schedule of other nonoperating income (expense) [Line Items] |
Schedule of Other Nonoperating Income, by Component [Table Text Block] | The following table presents the components of IDACORP’s other income, net and Idaho Power's other income, net (in thousands of dollars):
IDACORP |  | 2025 |  | 2024 |  | 2023
Interest and dividend income, net |  | $ | 23,872 |  |  | $ | 22,577 |  |  | $ | 15,266 |
Carrying charges on regulatory assets |  | 19,323 |  |  | 21,908 |  |  | 13,099 |
Pension and postretirement non-service costs |  | (5,986) |  |  | (8,077) |  |  | (6,513) |
Income from life insurance investments |  | 13,244 |  |  | 10,186 |  |  | 8,384 |
Other income |  | 6,769 |  |  | 8,659 |  |  | 6,286 |
Total other income, net |  | $ | 57,222 |  |  | $ | 55,253 |  |  | $ | 36,522 |
Idaho Power |  |  |  |  |  |
Interest and dividend income, net |  | $ | 16,014 |  |  | $ | 16,731 |  |  | $ | 13,410 |
Carrying charges on regulatory assets |  | 19,323 |  |  | 21,908 |  |  | 13,099 |
Pension and postretirement non-service costs |  | (5,986) |  |  | (8,077) |  |  | (6,513) |
Income from life insurance investments |  | 13,244 |  |  | 10,186 |  |  | 8,384 |
Other income |  | 6,953 |  |  | 8,962 |  |  | 6,333 |
Total other income, net |  | $ | 49,548 |  |  | $ | 49,710 |  |  | $ | 34,713 |

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- Definition [Line Items] for Schedule of other nonoperating income (expense) [Table] + References No definition available. + Details
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- Definition Tabular disclosure of the detailed components of other nonoperating income. May include methodology, assumptions and amounts for: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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