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Palo Verde Sale Leaseback Variable Interest Entities - Narrative (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
powerPlant
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
lease
powerPlant
Jun. 30, 2021
USD ($)
Dec. 31, 1986
trust
Palo Verde Sale Leaseback Variable Interest Entities          
Net income attributable to noncontrolling interest $ 4,306,000 $ 3,739,000 $ 8,612,000 $ 8,612,000  
APS          
Palo Verde Sale Leaseback Variable Interest Entities          
Number of VIE lessor trusts 3   3   3
Net income attributable to noncontrolling interest $ 4,306,000 3,739,000 $ 8,612,000 8,612,000  
Palo Verde VIE | APS          
Palo Verde Sale Leaseback Variable Interest Entities          
Net income attributable to noncontrolling interest $ 4,000,000 $ 4,000,000 9,000,000 $ 9,000,000  
Initial loss exposure to the VIE's noncontrolling equity participants during lease extension period     315,000,000    
Palo Verde VIE | APS | Maximum          
Palo Verde Sale Leaseback Variable Interest Entities          
Maximum loss exposure to the VIE's noncontrolling equity participants during lease extension period (up to)     $ 501,000,000    
Palo Verde VIE | APS | Period through 2033          
Palo Verde Sale Leaseback Variable Interest Entities          
Number of leases under which assets are retained | lease     3    
Annual lease payments     $ 21,000,000    
Palo Verde VIE | APS | Period through 2033 | Maximum          
Palo Verde Sale Leaseback Variable Interest Entities          
Lease period (up to)     2 years