Income Taxes - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Jan. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income Taxes
Interest expense to be received on the underpayment of income taxes		$ 2,100
Increase (decrease) in deferred income taxes due to regulation adoption		4,000
Income tax benefits		0
Income tax benefit		110,529	$ 76,912	$ 74,827
Variable Interest Entity, Not Primary Beneficiary | Palo Verde Sale Leaseback
Income Taxes
Income tax benefit		0
Discontinued Operations, Disposed of by Sale | Bright Canyou Energy Corportion
Income Taxes
Investment tax credits	$ 23,000
Payments to acquire investment tax credits	$ 21,000
Arizona Public Service Company
Income Taxes
Income tax benefit		126,993	$ 94,184	$ 90,800
Federal
Income Taxes
State credit carryforwards net of federal benefit		12,000
Federal | Arizona Public Service Company
Income Taxes
State credit carryforwards net of federal benefit		0
State
Income Taxes
State credit carryforwards net of federal benefit		12,000
State | Arizona Public Service Company
Income Taxes
State credit carryforwards net of federal benefit		$ 0