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Earnings Per Share and Equity Forward Sale Agreements (Tables) | 6 Months Ended
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Jun. 30, 2024
Earnings Per Share [Abstract] |
Schedule of Earnings Per Weighted Average Common Share Outstanding | The following table presents the calculation of Pinnacle West’s basic and diluted EPS (in thousands, except per share amounts):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2024 |  | 2023 |  | 2024 |  | 2023
Net income attributable to common shareholders | $ | 203,805 |  |  | $ | 106,663 |  |  | $ | 220,667 |  |  | $ | 103,366 |
Weighted average common shares outstanding — basic | 113,695 |  |  | 113,411 |  |  | 113,658 |  |  | 113,385 |
Net effect of dilutive securities: |  |  |  |  |  |  |
Contingently issuable performance shares and restricted stock units | 489 |  |  | 306 |  |  | 408 |  |  | 272 |
Dilutive shares related to equity forward sale agreements | 1,619 |  |  | — |  |  | 949 |  |  | — |
Total contingently issuable shares | 2,108 |  |  | 306 |  |  | 1,357 |  |  | 272 |
Weighted average common shares outstanding — diluted | 115,803 |  |  | 113,717 |  |  | 115,015 |  |  | 113,657 |
Earnings per weighted-average common share outstanding: |  |  |  |  |  |  |
Net income attributable to common shareholders — basic | $ | 1.79 |  |  | $ | 0.94 |  |  | $ | 1.94 |  |  | $ | 0.91 |
Net income attributable to common shareholders — diluted | $ | 1.76 |  |  | $ | 0.94 |  |  | $ | 1.92 |  |  | $ | 0.91 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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