Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Noncontrolling Interests
Beginning balance at Dec. 31, 2022		$ 882,189	$ 1,937,972	$ (12,922)	$ 7,376
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, New Issues		0
Share-based compensation expense		5,304
Tax withholdings on net settlements of share-based awards		(3,255)
Other		71
Retained Earnings
Net Income Attributable to IDACORP, Inc.	$ 124,672		124,672
Common stock dividends			(80,561)
Accumulated Other Comprehensive (Loss) Income
Unfunded pension liability adjustment (net of tax)	293			293
Noncontrolling Interest [Abstract]
Net income attributable to noncontrolling interests	216				216
Ending balance at Jun. 30, 2023		884,309	1,982,083	(12,629)	7,592
Beginning balance at Mar. 31, 2023		882,104	1,953,727	(12,776)	7,302
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, New Issues		0
Share-based compensation expense		2,167
Tax withholdings on net settlements of share-based awards		0
Other		38
Retained Earnings
Net Income Attributable to IDACORP, Inc.	68,574		68,574
Common stock dividends			(40,218)
Accumulated Other Comprehensive (Loss) Income
Unfunded pension liability adjustment (net of tax)	147			147
Noncontrolling Interest [Abstract]
Net income attributable to noncontrolling interests	290				(290)
Ending balance at Jun. 30, 2023		884,309	1,982,083	(12,629)	7,592
Accumulated Other Comprehensive (Loss) Income
Total IDACORP, Inc. shareholders’ equity			2,861,355	2,853,763
Total IDACORP, Inc. shareholders’ equity	2,907,569
Beginning balance at Dec. 31, 2023	2,914,743	888,615	2,036,138	(17,184)	7,174
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, New Issues		233,178
Share-based compensation expense		5,571
Tax withholdings on net settlements of share-based awards		(3,694)
Other		75
Retained Earnings
Net Income Attributable to IDACORP, Inc.	137,693		137,693
Common stock dividends			(84,646)
Accumulated Other Comprehensive (Loss) Income
Unfunded pension liability adjustment (net of tax)	568			568
Noncontrolling Interest [Abstract]
Net income attributable to noncontrolling interests	419				419
Ending balance at Jun. 30, 2024	3,203,907	1,123,745	2,089,185	(16,616)	7,593
Beginning balance at Mar. 31, 2024		890,042	2,042,003	(16,900)	7,269
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Value, New Issues		231,566
Share-based compensation expense		2,097
Tax withholdings on net settlements of share-based awards		0
Other		40
Retained Earnings
Net Income Attributable to IDACORP, Inc.	89,520		89,520
Common stock dividends			(42,338)
Accumulated Other Comprehensive (Loss) Income
Unfunded pension liability adjustment (net of tax)	284			284
Noncontrolling Interest [Abstract]
Net income attributable to noncontrolling interests	324				(324)
Ending balance at Jun. 30, 2024	3,203,907	$ 1,123,745	2,089,185	(16,616)	$ 7,593
Accumulated Other Comprehensive (Loss) Income
Total IDACORP, Inc. shareholders’ equity	$ 3,196,314		$ 3,203,907	$ 3,196,314