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SEGMENT INFORMATION:
 9 Months Ended
Sep. 30, 2026
Segment Reporting, Measurement Disclosures [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 power supply, 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 consists of IFS’s investments in affordable housing and other real estate tax credit projects, Ida-West’s joint venture investments in small hydropower generation projects, and IDACORP’s holding company expenses.

IDACORP’s and Idaho Power’s chief operating decision maker is regularly provided with segment expense information for utility operations at the same level of detail as presented in Idaho Power’s condensed 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		EliminationsConsolidated
Total
Three months ended September 30, 2026:
Revenues$607,037 $999 $— $608,036 
Depreciation and amortization71,928 — — 71,928 
Other income (expense), net23,977 70 — 24,047 
Interest income including carrying charges on regulatory assets7,505 955 (605)7,855 
Earnings of unconsolidated equity-method investments1,228 1,051 — 2,279 
Interest expense49,390 685 (605)49,470 
Income tax expense (benefit) 3,163 (156)— 3,007 
Net income attributable to IDACORP, Inc.158,136 2,077 — 160,213 
Expenditures for long-lived assets369,770 21 — 369,791 
Total assets as of September 30, 2026
11,308,019 199,984 (137,657)11,370,346 
Three months ended September 30, 2025:
Revenues$523,549 $868 $— $524,417 
Depreciation and amortization64,493 — — 64,493 
Other income (expense), net19,196 93 — 19,289 
Interest income including carrying charges on regulatory assets8,967 2,678 (761)10,884 
Earnings of unconsolidated equity-method investments996 1,189 — 2,185 
Interest expense44,796 849 (761)44,884 
Income tax expense7,321 365 — 7,686 
Net income attributable to IDACORP, Inc.122,156 2,281 — 124,437 
Expenditures for long-lived assets290,600 123 — 290,723 
Nine months ended September 30, 2026:
Revenues$1,478,472 $2,774 $— $1,481,246 
Depreciation and amortization203,790 — — 203,790 
Other income (expense), net71,450 247 — 71,697 
Interest income including carrying charges on regulatory assets21,890 3,523 (1,779)23,634 
Earnings of unconsolidated equity-method investments2,650 1,618 — 4,268 
Interest expense140,817 1,996 (1,779)141,034 
Income tax expense (benefit)18,927 (1,279)— 17,648 
Net income attributable to IDACORP, Inc.326,071 4,700 — 330,771 
Expenditures for long-lived assets1,177,537 289 — 1,177,826 
Nine months ended September 30, 2025:
Revenues$1,405,173 $2,581 $— $1,407,754 
Depreciation and amortization185,407 — — 185,407 
Other income (expense), net55,200 (144)— 55,056 
Interest income including carrying charges on regulatory assets27,541 8,437 (2,275)33,703 
Earnings of unconsolidated equity-method investments2,150 2,058 — 4,208 
Interest expense124,019 2,610 (2,275)124,354 
Income tax (benefit) expense(12,084)624 — (11,460)
Net income attributable to IDACORP, Inc.273,121 6,744 — 279,865 
Expenditures for long-lived assets825,100 252 — 825,352