v3.26.1
INCOME TAXES: Level 4 (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Income Tax Expense [Line Items]        
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount     $ 46,426 $ 34,196
Excess deferred income tax reversal     (3,248) (4,862)
Other [1]     (22,288) (11,981)
Income tax expense before additional ADITC amortization     20,890 17,353
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount     (6,250) (36,500)
Income Tax Expense $ 14,229 $ (6,681) $ 14,640 $ (19,147)
Effective tax rate     7.90% (14.00%)
Tax Jurisdiction of Domicile [Extensible Enumeration]     UNITED STATES UNITED STATES
Idaho Power Company        
Income Tax Expense [Line Items]        
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount     $ 45,978 $ 32,928
Excess deferred income tax reversal     (3,248) (4,862)
Other [1]     (20,716) (10,971)
Income tax expense before additional ADITC amortization     22,014 17,095
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount     (6,250) (36,500)
Income Tax Expense $ 14,811 $ (6,747) $ 15,764 $ (19,405)
Effective tax rate     8.60% (14.80%)
[1] "Other" primarily consists of the net tax effect of Idaho Power's regulatory flow-through tax adjustments.
Supplemental Disclosure of Cash Flow Information

Supplemental cash flow information related to income taxes, including cash (refunded) paid for income taxes and cash (received from) paid to IDACORP related to income taxes, is presented below (in thousands of dollars):
Six months ended
June 30,
 20262025
IDACORP
Total cash (refunded) paid for income taxes$(6,073)$480 
Idaho Power
Total cash (received from) paid to IDACORP related to income taxes$(2,442)$15,627