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Earnings Per Share | 6 Months Ended
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Jun. 30, 2022
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table presents the calculation of Pinnacle West’s basic and diluted earnings per share (in thousands, except per share amounts):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2022 |  | 2021 |  | 2022 |  | 2021
Net income attributable to common shareholders | $ | 164,312 |  |  | $ | 215,697 |  |  | $ | 181,268 |  |  | $ | 251,338 |
Weighted average common shares outstanding — basic | 113,172 |  |  | 112,882 |  |  | 113,137 |  |  | 112,855 |
Net effect of dilutive securities: |  |  |  |  |  |  |
Contingently issuable performance shares and restricted stock units | 197 |  |  | 341 |  |  | 195 |  |  | 303 |
Weighted average common shares outstanding — diluted | 113,369 |  |  | 113,223 |  |  | 113,332 |  |  | 113,158 |
Earnings per weighted-average common share outstanding |  |  |  |  |  |  |
Net income attributable to common shareholders — basic | $ | 1.45 |  |  | $ | 1.91 |  |  | $ | 1.60 |  |  | $ | 2.23 |
Net income attributable to common shareholders — diluted | $ | 1.45 |  |  | $ | 1.91 |  |  | $ | 1.60 |  |  | $ | 2.22 |

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