Variable Interest Entities - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) lease	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 1986 numberOfTrust
Palo Verde Sale Leaseback Variable Interest Entities
Net income attributable to noncontrolling interest	$ 17,224	$ 17,224	$ 17,224
Variable Interest Entity
Palo Verde Sale Leaseback Variable Interest Entities
Net income attributable to noncontrolling interest	5,000	0	0
Variable Interest Entity | Pinnacle West Captive Insurance Cell
Palo Verde Sale Leaseback Variable Interest Entities
Special use fund	34,000	5,000
Arizona Public Service Company
Palo Verde Sale Leaseback Variable Interest Entities
Net income attributable to noncontrolling interest	17,224	17,224	17,224
Arizona Public Service Company | Variable Interest Entity
Palo Verde Sale Leaseback Variable Interest Entities
Net income attributable to noncontrolling interest	17,000	$ 17,000	$ 17,000
Number of Vie lessor trusts | numberOfTrust				3
Initial loss exposure to the VIEs noncontrolling equity participants during lease extension period	345,000
Arizona Public Service Company | Variable Interest Entity | Maximum
Palo Verde Sale Leaseback Variable Interest Entities
Maximum loss exposure to the VIE's noncontrolling equity participants during lease extension period (up to)	$ 501,000
Arizona Public Service Company | Sale Leaseback Transaction Period Through 2033 | Variable Interest Entity
Palo Verde Sale Leaseback Variable Interest Entities
Number of leases under which assets are retained | lease	3
Annual lease payments	$ 21,000
Arizona Public Service Company | Sale Leaseback Transaction Period Through 2033 | Variable Interest Entity | Maximum
Palo Verde Sale Leaseback Variable Interest Entities
Lease period (up to)	2 years