Asset Retirement Obligations - Additional information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Asset Retirement Obligations [Line Items]
Palo Verde sale leaseback property, plant and equipment, net of accumulated depreciation	$ 19,197,899	$ 17,980,157
Decrease in regulatory liability	(9,416)	(28,495)	$ 332,470
Arizona Public Service Company
Schedule of Asset Retirement Obligations [Line Items]
Palo Verde sale leaseback property, plant and equipment, net of accumulated depreciation	19,197,743	17,979,860
Decrease in regulatory liability	(9,416)	(28,495)	$ 332,470
Cholla | Arizona Public Service Company
Schedule of Asset Retirement Obligations [Line Items]
Increase (decrease) in asset retirement obligation	63,000	71,000
Four Corners Coal-Fired Power Plant | Arizona Public Service Company
Schedule of Asset Retirement Obligations [Line Items]
Increase (decrease) in asset retirement obligation	82,000	(7,000)
Navajo Coal-Fired Power Plant | Arizona Public Service Company
Schedule of Asset Retirement Obligations [Line Items]
Increase (decrease) in asset retirement obligation	8,000	8,000
Palo Verde Nuclear Plant | Arizona Public Service Company
Schedule of Asset Retirement Obligations [Line Items]
Increase (decrease) in asset retirement obligation	1,000	63,000
Palo Verde sale leaseback property, plant and equipment, net of accumulated depreciation		59,000
Decrease in regulatory liability		$ 4,000
Solar | Arizona Public Service Company
Schedule of Asset Retirement Obligations [Line Items]
Increase (decrease) in asset retirement obligation	$ (11,000)