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Long-Term Debt and Liquidity Matters (Tables) | 6 Months Ended
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Jun. 30, 2024
Debt Disclosure [Abstract] |
Schedule of Estimated Fair Value of Long-term Debt, Including Current Maturities | The following table presents the estimated fair value of our long-term debt, including current maturities (dollars in thousands):
| As of June 30, 2024 |  | As of December 31, 2023
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Pinnacle West | $ | 1,567,173 |  |  | $ | 1,558,831 |  |  | $ | 1,123,731 |  |  | $ | 1,095,935 |
APS | 7,489,052 |  |  | 6,486,298 |  |  | 7,291,891 |  |  | 6,459,718 |
Total | $ | 9,056,225 |  |  | $ | 8,045,129 |  |  | $ | 8,415,622 |  |  | $ | 7,555,653 |

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