SEGMENT INFORMATION: Level 4 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information
Total operating revenues	$ 316,054	$ 291,008
Net Income Attributable to IDACORP, Inc.	44,831	37,490
Total assets	7,078,301		$ 7,095,244
Idaho Power Company
Segment Reporting Information
Total operating revenues	315,568	290,488
Net Income Attributable to IDACORP, Inc.	44,369	36,776
Total assets	6,893,076
All Other
Segment Reporting Information
Total operating revenues	486	520
Net Income Attributable to IDACORP, Inc.	462	714
Total assets	244,710
Eliminations
Segment Reporting Information
Total operating revenues	0	0
Net Income Attributable to IDACORP, Inc.	0	$ 0
Total assets	$ (59,485)