CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward] | ||||||||
| Balance at beginning of period | $ 3,571,874 | |||||||
| Reclassifications | $ 222 | $ 171 | 665 | $ 511 | ||||
| Total IDACORP, Inc. shareholders’ equity | 4,075,135 | 3,481,083 | 4,075,135 | 3,481,083 | ||||
| Balance at end of period | 4,075,135 | 3,481,083 | 4,075,135 | 3,481,083 | ||||
| Reclassification out of Accumulated Other Comprehensive Income | ||||||||
| Amortization of prior service cost | [1] | 55 | 55 | 166 | 166 | |||
| Amortization of net loss | [1] | 241 | 173 | 721 | 518 | |||
| Total reclassification, before tax - pension and postretirement benefits | 296 | 228 | 887 | 684 | ||||
| Tax benefit | [2] | (74) | (57) | (222) | (173) | |||
| Reclassifications | 222 | 171 | 665 | 511 | ||||
| Accumulated Defined Benefit Pension Items | ||||||||
| Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward] | ||||||||
| Balance at beginning of period | (14,501) | (13,481) | (14,944) | (13,592) | ||||
| Other Comprehensive Income (Loss) before Reclassifications, Tax | 0 | 0 | 0 | 229 | ||||
| Reclassifications | 222 | 171 | 665 | 511 | ||||
| Total IDACORP, Inc. shareholders’ equity | (14,279) | (13,310) | (14,279) | (13,310) | ||||
| Balance at end of period | (14,279) | (13,310) | (14,279) | (13,310) | ||||
| Reclassification out of Accumulated Other Comprehensive Income | ||||||||
| Reclassifications | $ 222 | $ 171 | $ 665 | $ 511 | ||||
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss) before reclassification adjustment from accumulated other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for net period benefit cost (credit) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Amount, before tax, of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of tax expense (benefit) allocated to other comprehensive income (loss) attributable to parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Details
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