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FAIR VALUE MEASUREMENTS: Fair Value Measurements Level 3 (Tables) | 12 Months Ended
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Dec. 31, 2023
Fair value measurements [Abstract] |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | The following table presents information about IDACORP’s and Idaho Power’s assets and liabilities measured at fair value on a recurring basis as of December 31, 2023 and 2022 (in thousands of dollars):
|  | December 31, 2023 |  | December 31, 2022
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds and commercial paper |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
IDACORP(1) |  | $ | 32,472 |  |  | $ | — |  |  | $ | — |  |  | $ | 32,472 |  |  | $ | 16,505 |  |  | $ | — |  |  | $ | — |  |  | $ | 16,505 |
Idaho Power |  | 230,600 |  |  | — |  |  | — |  |  | 230,600 |  |  | 34,468 |  |  | — |  |  | — |  |  | 34,468 |
Derivatives |  | 89 |  |  | — |  |  | — |  |  | 89 |  |  | 40,518 |  |  | 400 |  |  | — |  |  | 40,918 |
Equity securities |  | 37,320 |  |  | — |  |  | — |  |  | 37,320 |  |  | 34,129 |  |  | — |  |  | — |  |  | 34,129 |
IDACORP assets measured at NAV (not subject to hierarchy disclosure)(1) |  | — |  |  | — |  |  | — |  |  | 3,751 |  |  | — |  |  | — |  |  | — |  |  | 2,796 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivatives |  | $ | 3,932 |  |  | $ | 2,000 |  |  | $ | — |  |  | $ | 5,932 |  |  | $ | 2,937 |  |  | $ | 3,851 |  |  | $ | — |  |  | $ | 6,788 |
(1) Holding company only. Does not include amounts held by Idaho Power.
Fair Value, by Balance Sheet Grouping | The table below presents the carrying value and estimated fair value of financial instruments that are not reported at fair value, as of December 31, 2023 and 2022, using available market information and appropriate valuation methodologies (in thousands of dollars).
|  | December 31, 2023 |  | December 31, 2022
|  | Carrying Amount |  | Estimated Fair Value |  | Carrying Amount |  | Estimated Fair Value
|  | (thousands of dollars)
IDACORP |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |
Notes receivable(1) |  | $ | 3,038 |  |  | $ | 3,038 |  |  | $ | 3,871 |  |  | $ | 3,871 |
Held-to-maturity securities(1) |  | 31,639 |  |  | 28,341 |  |  | 30,475 |  |  | 25,452 |
Liabilities: |  |  |  |  |  |  |  |
Long-term debt (including current portion)(1) |  | 2,825,590 |  |  | 2,684,278 |  |  | 2,194,145 |  |  | 1,953,470 |
Idaho Power |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |
Held-to-maturity securities(1) |  | $ | 31,639 |  |  | $ | 28,341 |  |  | $ | 30,475 |  |  | $ | 25,452 |
Liabilities: |  |  |  |  |  |  |  |
Long-term debt (including current portion)(1) |  | 2,825,590 |  |  | 2,684,278 |  |  | 2,194,145 |  |  | 1,953,470 |
(1) Notes receivable are categorized as Level 3 and held-to-maturity securities and long-term debt are categorized as Level 2 of the fair value hierarchy, as defined earlier in this Note 16 - "Fair Value Measurements."

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-11 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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