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SEGMENT INFORMATION (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Revenues | $ 1,766,356 | $ 1,643,981 | $ 1,458,084
Electric utility revenues | 1,762,894 | 1,641,040 | 1,455,410
Operating income | 313,477 | 327,178 | 329,651
Other income, net | 51,378 | 33,689 | 21,105
Interest income | 28,365 | 14,401 | 7,292
Earnings of unconsolidated equity-method investments | 12,426 | 11,511 | 11,435
Interest on long-term debt | 116,457 | 89,375 | 86,698
Income before income taxes | 289,189 | 297,404 | 282,784
Income tax expense (benefit) | 27,296 | 37,844 | 36,912
Income attributable to IDACORP, Inc. | 261,195 | 258,982 | 245,550
Total assets | 8,475,918 | 7,543,258 | 7,210,515
Segment, Expenditure, Addition to Long-Lived Assets | 611,137 | 432,589 | 299,999
Consolidation, Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 0 | 0 | 0
Operating income | 0 | 0 | 0
Other income, net | 0 | 0 | 0
Interest income | (2,832) | (931) | (47)
Earnings of unconsolidated equity-method investments | 0 | 0 | 0
Interest on long-term debt | (2,832) | (931) | (47)
Income before income taxes | 0 | 0 | 0
Income tax expense (benefit) | 0 | 0 | 0
Income attributable to IDACORP, Inc. | 0 | 0 | 0
Total assets | (76,294) | (113,608) | (62,323)
Segment, Expenditure, Addition to Long-Lived Assets | $ 0 | 0 | 0
Idaho Power Company |  |  |
Segment Reporting Information [Line Items] |  |  |
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage | 33.00% |  |
Idaho Power Company | Idaho Power |  |  |
Segment Reporting Information [Line Items] |  |  |
Electric utility revenues | $ 1,762,894 | 1,641,040 | 1,455,410
Operating income | 313,379 | 327,170 | 329,568
Other income, net | 51,424 | 33,876 | 21,243
Interest income | 26,509 | 12,556 | 7,123
Earnings of unconsolidated equity-method investments | 10,540 | 10,211 | 10,211
Interest on long-term debt | 116,117 | 89,038 | 86,663
Income before income taxes | 285,736 | 294,775 | 281,482
Income tax expense (benefit) | 28,926 | 39,908 | 38,257
Income attributable to IDACORP, Inc. | 256,810 | 254,867 | 243,225
Total assets | 8,323,531 | 7,411,104 | 6,990,839
Segment, Expenditure, Addition to Long-Lived Assets | 610,913 | 432,430 | 299,972
All Other | Idaho Power |  |  |
Segment Reporting Information [Line Items] |  |  |
Revenues | 3,462 | 2,941 | 2,674
Operating income | 98 | 8 | 83
Other income, net | (46) | (187) | (138)
Interest income | 4,688 | 2,776 | 216
Earnings of unconsolidated equity-method investments | 1,886 | 1,300 | 1,224
Interest on long-term debt | 3,172 | 1,268 | 82
Income before income taxes | 3,453 | 2,629 | 1,302
Income tax expense (benefit) | (1,630) | (2,064) | (1,345)
Income attributable to IDACORP, Inc. | 4,385 | 4,115 | 2,325
Total assets | 228,681 | 245,762 | 281,999
Segment, Expenditure, Addition to Long-Lived Assets | $ 224 | $ 159 | $ 27

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