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Consolidation and Nature of Operations (Tables) | 6 Months Ended
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Jun. 30, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Schedule of Supplemental Cash Flow Information | The following table summarizes supplemental Pinnacle West cash flow information (dollars in thousands):
|  | Six Months Ended June 30, |  |
|  | 2026 |  | 2025 |  |  |  |  |  |
Cash paid during the period for: |  |  |  |  |  |  |  |  |  |
Income taxes, net of refunds/credits |  | $ | 8,112 |  |  | $ | 7,743 |  |  |  |  |  |  |
Interest, net of amounts capitalized |  | 223,625 |  |  | 189,041 |  |  |  |  |  |  |
Significant non-cash investing and financing activities: |  |  |  |  |  |  |  |  |  |
Accrued capital expenditures |  | 291,902 |  |  | 312,762 |  |  |  |  |  |  |
Dividends accrued but not yet paid |  | 110,284 |  |  | 106,869 |  |  |  |  |  |  |
The following table summarizes supplemental APS cash flow information (dollars in thousands):
|  | Six Months Ended June 30, |  |
|  | 2026 |  | 2025 |  |  |  |  |  |
Cash paid during the period for: |  |  |  |  |  |  |  |  |  |
Income taxes, net of refunds/credits |  | $ | 10,260 |  |  | $ | 10,369 |  |  |  |  |  |  |
Interest, net of amounts capitalized |  | 177,122 |  |  | 158,073 |  |  |  |  |  |  |
Significant non-cash investing and financing activities: |  |  |  |  |  |  |  |  |  |
Accrued capital expenditures |  | 291,902 |  |  | 312,762 |  |  |  |  |  |  |
Dividends accrued but not yet paid |  | 110,600 |  |  | 106,900 |  |  |  |  |  |  |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 + Details
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