Income Taxes - Summary of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax [Line Items]
Tax positions, that if recognized, would decrease our effective tax rate	$ 28,762	$ 28,246	$ 26,300
Unrecognized tax benefit interest expense/(benefit) recognized	452	(139)	(535)
Unrecognized tax benefit interest accrued	1,633	1,181	1,320
Arizona Public Service Company
Income Tax [Line Items]
Tax positions, that if recognized, would decrease our effective tax rate	28,762	28,246	26,300
Unrecognized tax benefit interest expense/(benefit) recognized	452	(139)	(535)
Unrecognized tax benefit interest accrued	$ 1,633	$ 1,181	$ 1,320