Consolidated Statements of Income Statement - USD ($) shares in Thousands, $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Operating Revenues: | ||||
| Electric utility revenues | $ 607,037 | $ 523,549 | $ 1,478,472 | $ 1,405,173 |
| Other | 999 | 868 | 2,774 | 2,581 |
| Total operating revenues | 608,036 | 524,417 | 1,481,246 | 1,407,754 |
| Operating Expenses: | ||||
| Purchased power | 140,519 | 121,276 | 296,056 | 284,163 |
| Fuel expense | 74,190 | 74,992 | 166,242 | 179,238 |
| Power cost adjustment | (12,402) | (18,295) | (12,802) | 57,967 |
| Other operations and maintenance | 142,941 | 120,398 | 402,735 | 355,371 |
| Energy efficiency programs | 8,011 | 7,460 | 20,293 | 18,808 |
| Depreciation and amortization | 71,928 | 64,493 | 203,790 | 185,407 |
| Other operating expenses, net | 3,871 | 8,112 | 12,333 | 24,053 |
| Total electric utility operating expenses | 429,058 | 378,436 | 1,088,647 | 1,105,007 |
| Other | 250 | 1,160 | 2,157 | 2,424 |
| Total operating expenses | 429,308 | 379,596 | 1,090,804 | 1,107,431 |
| Operating Income | 178,728 | 144,821 | 390,442 | 300,323 |
| Non-operating (Income) Expense: | ||||
| Allowance for equity funds used during construction | (18,645) | (15,569) | (56,705) | (45,177) |
| Earnings of unconsolidated equity-method investments | (2,279) | (2,185) | (4,268) | (4,208) |
| Interest on long-term debt and finance leases | 51,681 | 46,244 | 149,836 | 128,733 |
| Other interest | 7,863 | 7,847 | 23,023 | 21,696 |
| Allowance for borrowed funds used during construction | (10,074) | (9,207) | (31,825) | (26,075) |
| Other income, net | (13,257) | (14,604) | (38,626) | (43,582) |
| Total non-operating expense, net | 15,289 | 12,526 | 41,435 | 31,387 |
| Income Before Income Taxes | 163,439 | 132,295 | 349,007 | 268,936 |
| Income Tax Expense (Benefit) | 3,007 | 7,686 | 17,648 | (11,460) |
| Net Income | 160,432 | 124,609 | 331,359 | 280,396 |
| Income attributable to noncontrolling interests | (219) | (172) | (588) | (531) |
| Net Income Attributable to IDACORP, Inc. | $ 160,213 | $ 124,437 | $ 330,771 | $ 279,865 |
| Weighted-average common shares outstanding - basic (in shares) | 57,732 | 54,172 | 56,189 | 54,147 |
| Weighted-average common shares outstanding - diluted (in shares) | 58,656 | 55,055 | 57,402 | 54,522 |
| Earnings Per Share of Common Stock: | ||||
| Earnings attributable to IDACORP, Inc. - basic (in dollars per share) | $ 2.78 | $ 2.30 | $ 5.89 | $ 5.17 |
| Earnings attributable to IDACORP, Inc. - diluted (in dollars per share) | $ 2.73 | $ 2.26 | $ 5.76 | $ 5.13 |
| X | ||||||||||
- Definition This balance represents costs expended on energy efficiency programs. No definition available.
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| X | ||||||||||
- Definition An adjustment to net power supply costs (Purchased Power and Fuel less Off-system sales) listed to defer/accrue them for amounts that will be collected from/returned to customers in the future, and to recognize previously deferred/accrued net power supply costs to match with amounts now collected from/returned to customers. No definition available.
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| X | ||||||||||
- Definition Utilities Operating Expense, Other, Net No definition available.
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- References No definition available.
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of interest costs capitalized disclosed as an adjusting item to interest costs incurred. No definition available.
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| X | ||||||||||
- Definition Amount of the cost of borrowed funds accounted for as interest expense for debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of interest expense classified as other. No definition available.
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| X | ||||||||||
- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- References No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The net result for the period of deducting operating expenses from operating revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of general expenses not normally included in Other Operating Costs and Expenses. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The component of the allowance for funds used during construction during the period based on an assumed rate of return on equity funds used in financing the construction of regulated assets. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The total amount of operating revenues recognized during the period. No definition available.
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| X | ||||||||||
- Definition The amount of regulated power revenues recognized during the period. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The amount of unregulated operating revenues recognized during the period. No definition available.
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| X | ||||||||||
- Definition Amount of operating expense of regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of operating expense for depreciation and amortization of regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of operating expense for fuel used by regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of operating expense for routine plant maintenance, repairs and operations of regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of operating expense for purchased power of regulated operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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