Idaho Power Company Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Regulated Operating Revenue
Electric utility revenues	$ 429,338	$ 343,921
Operating Expenses [Abstract]
Purchased power	171,093	85,424
Fuel expense	89,080	45,702
Power cost adjustment	(51,337)	(400)
Other operations and maintenance	92,041	92,086
Energy efficiency programs	5,215	6,589
Depreciation	45,391	44,457
Other electric utility operating expenses	9,028	8,901
Total electric utility operating expenses	360,511	282,759
Operating Income	68,103	60,668
Nonoperating (Income) Expense:
Allowance for equity funds used during construction	(9,908)	(9,123)
Earnings of unconsolidated equity-method investments	(2,454)	(2,308)
Interest on long-term debt	24,968	21,069
Other interest	4,755	3,815
Allowance for borrowed funds used during construction	(4,228)	(3,385)
Other income, net	(8,149)	(1,610)
Total nonoperating expense, net	4,984	8,458
Income Before Income Taxes	63,119	52,210
Income Tax Expense	7,095	6,026
Net Income	56,024	46,184
Idaho Power Company [Member]
Regulated Operating Revenue
Electric utility revenues	429,338	343,921
Operating Expenses [Abstract]
Purchased power	171,093	85,424
Fuel expense	89,080	45,702
Power cost adjustment	(51,337)	(400)
Other operations and maintenance	92,041	92,086
Energy efficiency programs	5,215	6,589
Depreciation	45,391	44,457
Other electric utility operating expenses	9,028	8,901
Total electric utility operating expenses	360,511	282,759
Operating Income	68,827	61,162
Nonoperating (Income) Expense:
Allowance for equity funds used during construction	(9,908)	(9,123)
Earnings of unconsolidated equity-method investments	(2,472)	(2,480)
Interest on long-term debt	24,968	21,069
Other interest	4,674	3,811
Allowance for borrowed funds used during construction	(4,228)	(3,385)
Other income, net	(7,527)	(1,641)
Total nonoperating expense, net	5,507	8,251
Income Before Income Taxes	63,320	52,911
Income Tax Expense	7,610	6,697
Net Income	$ 55,710	$ 46,214