Palo Verde Sale Leaseback Variable Interest Entities - Schedule of VIEs (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Palo Verde Sale Leaseback Variable Interest Entities
Palo Verde sale leaseback property plant and equipment, net of accumulated depreciation	$ 17,606,771	$ 16,854,354
Amounts relating to the VIEs included in Condensed Consolidated Balance Sheets
Equity — Noncontrolling interests	113,520	111,229
APS
Palo Verde Sale Leaseback Variable Interest Entities
Palo Verde sale leaseback property plant and equipment, net of accumulated depreciation	17,606,378	16,800,254
Amounts relating to the VIEs included in Condensed Consolidated Balance Sheets
Equity — Noncontrolling interests	113,520	111,229
Palo Verde VIE | APS
Palo Verde Sale Leaseback Variable Interest Entities
Palo Verde sale leaseback property plant and equipment, net of accumulated depreciation	87,394	90,296
Amounts relating to the VIEs included in Condensed Consolidated Balance Sheets
Equity — Noncontrolling interests	$ 113,520	$ 111,229