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SEGMENT INFORMATION | 12 Months Ended
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Dec. 31, 2025
Segment Reporting [Abstract] |
Segment Information | SEGMENT INFORMATION IDACORP’s only reportable segment is utility operations. The utility operations segment’s primary source of revenue is the regulated operations of Idaho Power. Idaho Power’s regulated operations include the generation, transmission, distribution, purchase, and sale of electricity. This segment also includes income from IERCo, a wholly-owned subsidiary of Idaho Power that is also subject to regulation and is a one-third owner of BCC, an unconsolidated investment. IDACORP’s other operating segments are below the quantitative and qualitative thresholds for reportable segments and are included in the “All Other” category in the table below. This category is comprised of IFS’s investments in affordable housing and other real estate tax credits, Ida-West’s joint venture investments in small hydropower generation projects, and IDACORP’s holding company expenses. The President and Chief Executive Officer of IDACORP and Idaho Power is the companies' chief operating decision maker (CODM). The CODM uses net income, compared with historical results and forecasted expectations, to monitor the utility segment's results, monitor and plan utility-specific regulatory strategy, allocate capital investments, and inform financing decisions. The CODM is regularly provided with segment expense information for utility operations at the same level of detail as presented in Idaho Power's consolidated statements of income. The table below summarizes the segment information for IDACORP’s utility operations and the total of all other segments, and reconciles this information to total enterprise amounts (in thousands of dollars):
|  | Utility Operations |  | All Other |  | Eliminations |  | Consolidated Total
2025 |  |  |  |  |  |  |  |
Revenues |  | $ | 1,809,609 |  |  | $ | 3,388 |  |  | $ | — |  |  | $ | 1,812,997 |
Depreciation and amortization |  | 251,072 |  |  | — |  |  | — |  |  | 251,072 |
Operating income |  | 355,417 |  |  | (1,441) |  |  | — |  |  | 353,976 |
Other income, net |  | 76,700 |  |  | (184) |  |  | — |  |  | 76,516 |
Interest income, including carrying charges on regulatory assets |  | 35,337 |  |  | 10,829 |  |  | (2,971) |  |  | 43,195 |
Equity-method income |  | 2,984 |  |  | 1,938 |  |  | — |  |  | 4,922 |
Interest expense |  | 167,753 |  |  | 3,409 |  |  | (2,971) |  |  | 168,191 |
Income before income taxes |  | 302,685 |  |  | 7,733 |  |  | — |  |  | 310,418 |
Income tax benefit |  | (13,177) |  |  | (538) |  |  | — |  |  | (13,715) |
Net Income attributable to IDACORP, Inc. |  | 315,862 |  |  | 7,610 |  |  | — |  |  | 323,472 |
Total assets |  | 10,036,896 |  |  | 261,518 |  |  | (72,977) |  |  | 10,225,437 |
Expenditures for long-lived assets |  | 1,178,990 |  |  | 337 |  |  | — |  |  | 1,179,327 |
2024 |  |  |  |  |  |  |  |
Revenues |  | $ | 1,822,965 |  |  | $ | 3,668 |  |  | $ | — |  |  | $ | 1,826,633 |
Depreciation and amortization |  | 223,410 |  |  | — |  |  | — |  |  | 223,410 |
Operating income |  | 328,183 |  |  | (344) |  |  | — |  |  | 327,839 |
Other income, net |  | 64,309 |  |  | (303) |  |  | — |  |  | 64,006 |
Interest income, including carrying charges on regulatory assets |  | 38,639 |  |  | 9,090 |  |  | (3,244) |  |  | 44,485 |
Equity-method income |  | 2,671 |  |  | 1,868 |  |  | — |  |  | 4,539 |
Interest expense |  | 135,516 |  |  | 3,593 |  |  | (3,244) |  |  | 135,865 |
Income before income taxes |  | 298,286 |  |  | 6,718 |  |  | — |  |  | 305,004 |
Income tax expense (benefit) |  | 17,681 |  |  | (2,628) |  |  | — |  |  | 15,053 |
Net Income attributable to IDACORP, Inc. |  | 280,605 |  |  | 8,569 |  |  | — |  |  | 289,174 |
Total assets |  | 8,966,968 |  |  | 350,287 |  |  | (77,892) |  |  | 9,239,363 |
Expenditures for long-lived assets |  | 1,009,138 |  |  | 141 |  |  | — |  |  | 1,009,279 |
2023 |  |  |  |  |  |  |  |
Revenues |  | $ | 1,762,894 |  |  | $ | 3,462 |  |  | $ | — |  |  | $ | 1,766,356 |
Depreciation and amortization |  | 195,341 |  |  | — |  |  | — |  |  | 195,341 |
Operating income |  | 313,379 |  |  | 98 |  |  | — |  |  | 313,477 |
Other income, net |  | 51,424 |  |  | (46) |  |  | — |  |  | 51,378 |
Interest income, including carrying charges on regulatory assets |  | 26,509 |  |  | 4,688 |  |  | (2,832) |  |  | 28,365 |
Equity-method income |  | 10,540 |  |  | 1,886 |  |  | — |  |  | 12,426 |
Interest expense |  | 116,117 |  |  | 3,172 |  |  | (2,832) |  |  | 116,457 |
Income before income taxes |  | 285,736 |  |  | 3,453 |  |  | — |  |  | 289,189 |
Income tax expense (benefit) |  | 28,926 |  |  | (1,630) |  |  | — |  |  | 27,296 |
Net Income attributable to IDACORP, Inc. |  | 256,810 |  |  | 4,385 |  |  | — |  |  | 261,195 |
Total assets |  | 8,323,531 |  |  | 228,681 |  |  | (76,294) |  |  | 8,475,918 |
Expenditures for long-lived assets |  | 610,913 |  |  | 224 |  |  | — |  |  | 611,137 |

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- Definition The entire disclosure for reporting segments including data and tables. 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