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Long-Term Debt and Liquidity Matters - Additional Information (Details) $ in Thousands |  |  |  |  |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 06, 2023 USD ($) | Sep. 15, 2022 USD ($) | Feb. 11, 2022 USD ($) MW | Jan. 06, 2022 USD ($) | Dec. 21, 2021 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 16, 2022 USD ($) | Nov. 08, 2022 USD ($) | Dec. 23, 2020 USD ($) | Dec. 17, 2020 USD ($) | Dec. 16, 2020 USD ($)
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  |  |  |  | $ 875,537 | $ 746,999 | $ 1,596,672 |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Provisions |  |  |  |  |  |  |  |  |  |  |  |  |
Ratio of consolidated debt to consolidated capitalization (as a percent) |  |  |  |  |  | 65.00% |  |  |  |  |  |  |
Arizona Public Service Company |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  |  |  |  | $ 524,852 | 446,999 | 1,099,722 |  |  |  |  |
Equity infusion from Pinnacle West |  |  |  | $ 150,000 |  |  |  |  |  |  |  |  |
Debt Provisions |  |  |  |  |  |  |  |  |  |  |  |  |
Actual ratio of consolidated debt to total consolidated capitalization required to be maintained as per the debt covenant (as a percent) |  |  |  |  |  | 50.80% |  |  |  |  |  |  |
Arizona Public Service Company | Subsequent Event |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Equity infusion from Pinnacle West | $ 150,000 |  |  |  |  |  |  |  |  |  |  |  |
Arizona Public Service Company | Pollution Control Revenue Bonds |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  | $ 32,000 |  |  |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  | $ 128,000 |  |  |  |  |  |  |  |  |  |  |
Arizona Public Service Company | ACC |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Provisions |  |  |  |  |  |  |  |  |  |  |  |  |
Long term debt authorization |  |  |  |  |  |  |  |  |  |  |  | $ 8,000,000 | $ 7,500,000
Bright Canyon Energy Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Public Utilities, Solar and Battery Storage Capacity | MW |  |  | 31 |  |  |  |  |  |  |  |  |  |
Unsecured Senior Notes Maturing 2032 | Arizona Public Service Company | Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  |  |  |  |  |  |  |  |  | $ 400,000 |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  |  | 6.35% |  |  |
Term Loan | Non-Recourse Construction Term Loan Facility | Bright Canyon Energy Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  |  | $ 42,000 |  |  |  |  |  |  |  |  |  |
Long-term line of credit |  |  |  |  |  | $ 23,000 |  |  |  |  |  |  |
Bridge Loan | Equity Bridge Loan Facility | Bright Canyon Energy Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  |  | 33,000 |  |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  |  |  |  | 28,000 |  |  |  |  |  |  |
Letter of Credit | Arizona Public Service Company |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit |  |  |  |  |  | 10,000 |  |  |  |  |  |  |
Letter of Credit | Bright Canyon Energy Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  |  | 5,000 |  |  |  |  |  |  |  |  |  |
Letter of Credit | Revolving credit facility maturing May 2026 | Arizona Public Service Company |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit |  |  |  |  |  | 0 |  |  |  |  |  |  |
Letter of Credit | Revolving credit facility maturing May 2026 | Bright Canyon Energy Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit |  |  |  |  |  | 2,500 |  |  |  |  |  |  |
Pinnacle West |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  |  |  |  | $ 300,000 | $ 300,000 | $ 496,950 |  |  |  |  |
Debt Provisions |  |  |  |  |  |  |  |  |  |  |  |  |
Actual ratio of consolidated debt to total consolidated capitalization required to be maintained as per the debt covenant (as a percent) |  |  |  |  |  | 57.70% |  |  |  |  |  |  |
Pinnacle West | Term Loan |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  |  |  |  |  |  |  |  | $ 175,000 |  | $ 150,000 |  |
Pinnacle West | Term Loan | Term Loan Maturing 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Notes issued |  |  |  |  | $ 450,000 |  |  |  |  |  |  |  |
Issuance of long-term debt |  |  |  | $ 300,000 | $ 150,000 |  |  |  |  |  |  |  |
Pinnacle West | Bridge Loan | Bright Canyon Energy Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt guarantee |  |  | $ 42,000 |  |  |  |  |  |  |  |  |  |
Pinnacle West | Letter of Credit | Revolving credit facility maturing May 2026 |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt and Liquidity Matters [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding letters of credit |  |  |  |  |  | $ 0 |  |  |  |  |  |  |

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