v3.25.1
Business Segments (Tables)
 3 Months Ended
Mar. 31, 2025
Segment Reporting [Abstract]  
Schedule of Reportable Segment’s Revenues, Significant Expenses, Net Income, and Assets The following table reconciles our reportable segment’s revenues, significant expenses, and net income to the Pinnacle West Consolidated amounts (dollars in millions):
Three Months Ended March 31,
20252024
Regulated Electricity SegmentOther Pinnacle West ConsolidatedRegulated Electricity SegmentOther Pinnacle West Consolidated
Operating Revenues$1,032 $— $1,032 $952 $— $952 
Fuel and purchased power (380)— (380)(358)— (358)
Operations and maintenance(297)(3)(300)(254)(4)(258)
Depreciation and amortization (235)— (235)(210)— (210)
Taxes other than income taxes (59)— (59)(59)— (59)
Pension and other postretirement non-service credits, net3 — 3 12 — 12 
Allowance for equity funds used during construction13 — 13 10 — 10 
Other income and expenses, net3 11 14 4 19 23 
Interest expense and costs(79)(16)(95)(74)(13)(87)
Income Taxes3 3 6 (4)— (4)
Less: Net income attributable to noncontrolling interests(4)— (4)(4)— (4)
Net Income (Loss) $— $(5)$(5)$15 $2 $17 

The following table reconciles our reportable segment's assets to the Pinnacle West Consolidated amount (dollars in millions):
March 31, 2025December 31, 2024
Regulated Electricity SegmentOtherPinnacle West ConsolidatedRegulated Electricity SegmentOtherPinnacle West Consolidated
Total Assets$27,097 $139 $27,236 $25,988 $115 $26,103