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Asset Retirement Obligations - Additional information (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Schedule of Asset Retirement Obligations [Line Items] |  |  |
Palo Verde sale leaseback property, plant and equipment, net of accumulated depreciation | $ 19,197,899 | $ 17,980,157 |
Decrease in regulatory liability | (9,416) | (28,495) | $ 332,470
Arizona Public Service Company |  |  |
Schedule of Asset Retirement Obligations [Line Items] |  |  |
Palo Verde sale leaseback property, plant and equipment, net of accumulated depreciation | 19,197,743 | 17,979,860 |
Decrease in regulatory liability | (9,416) | (28,495) | $ 332,470
Cholla | Arizona Public Service Company |  |  |
Schedule of Asset Retirement Obligations [Line Items] |  |  |
Increase (decrease) in asset retirement obligation | 63,000 | 71,000 |
Four Corners Coal-Fired Power Plant | Arizona Public Service Company |  |  |
Schedule of Asset Retirement Obligations [Line Items] |  |  |
Increase (decrease) in asset retirement obligation | 82,000 | (7,000) |
Navajo Coal-Fired Power Plant | Arizona Public Service Company |  |  |
Schedule of Asset Retirement Obligations [Line Items] |  |  |
Increase (decrease) in asset retirement obligation | 8,000 | 8,000 |
Palo Verde Nuclear Plant | Arizona Public Service Company |  |  |
Schedule of Asset Retirement Obligations [Line Items] |  |  |
Increase (decrease) in asset retirement obligation | 1,000 | 63,000 |
Palo Verde sale leaseback property, plant and equipment, net of accumulated depreciation |  | 59,000 |
Decrease in regulatory liability |  | $ 4,000 |
Solar | Arizona Public Service Company |  |  |
Schedule of Asset Retirement Obligations [Line Items] |  |  |
Increase (decrease) in asset retirement obligation | $ (11,000) |  |

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- Definition Schedule of Asset Retirement Obligations [Line Items] + References No definition available. + Details
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- Definition Amount of increase (decrease) in asset retirement obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481850/410-20-50-1 + Details
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- Definition The increase (decrease) during the reporting period in regulated liabilities. Regulated liabilities are created when regulatory agency permits an entity to defer revenues to the balance sheet. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 + Details
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