v3.26.1
Variable Interest Entities - Additional Information (Details)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
trust
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
trust
Jun. 30, 2025
USD ($)
Dec. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Sep. 30, 2025
trust
Dec. 31, 1986
trust
Palo Verde Sale Leaseback Variable Interest Entities                
Net income attributable to noncontrolling interest $ 2,193 $ 4,306 $ 4,387 $ 8,612        
APS                
Palo Verde Sale Leaseback Variable Interest Entities                
Net income attributable to noncontrolling interest 2,193 4,306 4,387 8,612        
Variable Interest Entity                
Palo Verde Sale Leaseback Variable Interest Entities                
Net income attributable to noncontrolling interest 4,100 1,700 4,400 2,400        
Variable Interest Entity | APS                
Palo Verde Sale Leaseback Variable Interest Entities                
Net income attributable to noncontrolling interest $ 2,000 $ 4,000 $ 4,000 $ 9,000        
Number of VIE lessor trusts | trust 1   1         3
Number of VIE lessor trusts acquired | trust             2  
Number of VIE lessor trusts terminated | trust             2  
Annual lease payments     $ 9,000          
Variable Interest Entity | APS | Forecast                
Palo Verde Sale Leaseback Variable Interest Entities                
Initial loss exposure to the VIEs noncontrolling equity participants during lease extension period         $ 177,000      
Variable Interest Entity | APS | Maximum                
Palo Verde Sale Leaseback Variable Interest Entities                
Lease period (up to)     2 years          
Maximum loss exposure to the VIE's noncontrolling equity participants during lease extension period (up to)     $ 267,000          
Variable Interest Entity | APS | Palo Verde Unit 2                
Palo Verde Sale Leaseback Variable Interest Entities                
Ownership percentage     23.90%          
Leased interest percentage 5.20%   5.20%          
Variable Interest Entity | Pinnacle West Captive Insurance Cell                
Palo Verde Sale Leaseback Variable Interest Entities                
Special use fund $ 46,000   $ 46,000     $ 40,000