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OTHER INCOME AND EXPENSE Other Income and Expense Level 3 (Tables) | 12 Months Ended
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Dec. 31, 2023
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 (expense), net and Idaho Power's other income (expense), net (in thousands of dollars):
IDACORP |  | 2023 |  | 2022 |  | 2021
Interest and dividend income, net |  | $ | 15,266 |  |  | $ | 5,952 |  |  | $ | 1,408 |
Carrying charges on regulatory assets |  | 13,099 |  |  | 7,032 |  |  | 5,034 |
Pension and postretirement non-service costs(1) |  | (6,513) |  |  | (9,196) |  |  | (15,249) |
Income from life insurance investments |  | 8,384 |  |  | 7,107 |  |  | 5,203 |
Other income (expense) |  | 6,286 |  |  | (90) |  |  | 463 |
Total other income (expense), net |  | $ | 36,522 |  |  | $ | 10,805 |  |  | $ | (3,141) |
Idaho Power |  |  |  |  |  |
Interest and dividend income, net |  | $ | 13,410 |  |  | $ | 4,094 |  |  | $ | 1,241 |
Carrying charges on regulatory assets |  | 13,099 |  |  | 7,032 |  |  | 5,034 |
Pension and postretirement non-service costs(1) |  | (6,513) |  |  | (9,196) |  |  | (15,240) |
Income from life insurance investments |  | 8,384 |  |  | 7,012 |  |  | 5,203 |
Other income (expense) |  | 6,333 |  |  | 205 |  |  | 591 |
Total other income (expense), net |  | $ | 34,713 |  |  | $ | 9,147 |  |  | $ | (3,171) |
(1) The 2021 pension and postretirement non-service costs includes $4.7 million of expense for a temporary deviation from the cost-sharing provisions of the substantive postretirement plan as described in Note 11 - "Benefit Plans."

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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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