SEGMENT INFORMATION: Level 4 (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Information
Total operating revenues	$ 360,074	$ 318,766	$ 676,127	$ 609,774
Net Income Attributable to IDACORP, Inc.	70,023	60,389	114,854	97,879
Total assets	7,201,458		7,201,458		$ 7,095,244
Electric utility revenues	359,058	317,666	674,625	608,154
Idaho Power Company
Segment Reporting Information
Total operating revenues	359,058	317,666	674,625	608,154
Net Income Attributable to IDACORP, Inc.	68,822	58,923	113,191	95,700
Total assets	7,006,991		7,006,991
All Other
Segment Reporting Information
Total operating revenues	1,016	1,100	1,502	1,620
Net Income Attributable to IDACORP, Inc.	1,201	1,466	1,663	2,179
Total assets	250,549		250,549
Eliminations
Segment Reporting Information
Total operating revenues	0	0	0	0
Net Income Attributable to IDACORP, Inc.	0	$ 0	0	$ 0
Total assets	$ (56,082)		$ (56,082)