v3.26.1
SEGMENT INFORMATION: Level 4 (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting          
Total operating revenues $ 469,798 $ 450,880 $ 873,210 $ 883,338  
Depreciation 66,344 61,128 131,863 120,913  
Other income, net 25,653 18,551 47,650 35,766  
Other Interest and Dividend Income 7,109 11,487 15,779 22,819  
Earnings of unconsolidated equity-method investments 1,244 1,306 1,990 2,024  
Interest Expense, Operating and Nonoperating 47,412 42,472 91,565 79,471  
Income Tax Expense (Benefit) 14,229 (6,681) 14,640 (19,147)  
Net Income Attributable to IDACORP, Inc. 102,577 95,781 170,558 155,428  
Segment Reporting, Long-Lived Asset, Expenditure for Addition 436,508 333,305 808,035 534,629  
Total assets 10,866,164   10,866,164   $ 10,225,437
Eliminations          
Segment Reporting          
Total operating revenues 0 0 0 0  
Depreciation 0 0 0 0  
Other income, net 0 0 0 0  
Other Interest and Dividend Income (606) (752) (1,175) (1,514)  
Earnings of unconsolidated equity-method investments 0 0 0 0  
Interest Expense, Operating and Nonoperating (606) (752) (1,175) (1,514)  
Income Tax Expense (Benefit) 0 0 0 0  
Net Income Attributable to IDACORP, Inc. 0 0 0 0  
Segment Reporting, Long-Lived Asset, Expenditure for Addition 0 0 0 0  
Total assets (110,414)   (110,414)    
Idaho Power Company | Operating Segments          
Segment Reporting          
Total operating revenues 468,673 449,672 871,435 881,625  
Depreciation 66,344 61,128 131,863 120,913  
Other income, net 25,291 18,438 47,473 36,004  
Other Interest and Dividend Income 7,010 9,533 14,385 18,574  
Earnings of unconsolidated equity-method investments 591 504 1,422 1,154  
Interest Expense, Operating and Nonoperating 47,351 42,385 91,427 79,224  
Income Tax Expense (Benefit) 14,811 (6,747) 15,764 (19,405)  
Net Income Attributable to IDACORP, Inc. 101,276 92,838 167,934 150,966  
Segment Reporting, Long-Lived Asset, Expenditure for Addition 436,286 333,261 807,767 534,500  
Total assets 10,788,366   10,788,366    
Other Operating Segment | Operating Segments          
Segment Reporting          
Total operating revenues 1,125 1,208 1,775 1,713  
Depreciation 0 0 0 0  
Other income, net 362 113 177 (238)  
Other Interest and Dividend Income 705 2,706 2,569 5,759  
Earnings of unconsolidated equity-method investments 653 802 568 870  
Interest Expense, Operating and Nonoperating 667 839 1,313 1,761  
Income Tax Expense (Benefit) (582) 66 (1,124) 258  
Net Income Attributable to IDACORP, Inc. 1,301 2,943 2,624 4,462  
Segment Reporting, Long-Lived Asset, Expenditure for Addition 222 $ 44 268 $ 129  
Total assets $ 188,212   $ 188,212