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Long-Term Debt and Liquidity Matters - Narrative (Details) |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jan. 06, 2023 USD ($) | Feb. 11, 2022 USD ($) MW | Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Apr. 10, 2023 USD ($) creditFacility | Dec. 16, 2022 USD ($)
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Issuance of long-term debt |  |  | $ 185,136,000 | $ 312,052,000 |  |
Pinnacle West | Term Loan |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  | $ 175,000,000
Pinnacle West | Revolving Credit Facility | Revolving Credit Facility Maturing April 2028 |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Long-term line of credit |  |  | 0 |  |  |
Pinnacle West | Revolving Credit Facility | Revolving Credit Facility Maturing April 2028 | Subsequent Event |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Current borrowing capacity on credit facility |  |  |  |  | $ 200,000,000 |
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders (up to) |  |  |  |  | 300,000,000 |
Pinnacle West | Letter of Credit | Revolving Credit Facility Maturing April 2028 |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Outstanding letters of credit |  |  | 0 |  |  |
Pinnacle West | Commercial Paper | Revolving Credit Facility Maturing April 2028 |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Commercial paper |  |  | 35,000,000 |  |  |
APS |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Equity infusion from Pinnacle West | $ 150,000,000 |  |  |  |  |
APS | Revolving Credit Facility | Revolving Credit Facility Maturing April 2028 | Subsequent Event |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Current borrowing capacity on credit facility |  |  |  |  | 1,250,000,000 |
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders (up to) |  |  |  |  | 1,650,000,000 |
APS | Revolving Credit Facility | Revolving Credit Facility Maturing April 2028, Facility One | Subsequent Event |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders (up to) |  |  |  |  | 400,000,000 |
APS | Revolving Credit Facility | Revolving Credit Facility Maturing April 2028, Facility Two | Subsequent Event |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Current borrowing capacity on credit facility |  |  |  |  | 500,000,000 |
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders (up to) |  |  |  |  | $ 400,000,000 |
APS | Revolving Credit Facility | Revolving Credit Facility Maturing in 2022 and 2023 |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Long-term line of credit |  |  | 0 |  |  |
APS | Revolving Credit Facility | Revolving Credit Facility Maturing in 2022 and 2023 | Subsequent Event |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Number of line of credit facilities | creditFacility |  |  |  |  | 2 |
APS | Letter of Credit |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Outstanding letters of credit |  |  | 10,000,000 |  |  |
APS | Letter of Credit | Revolving Credit Facility Maturing April 2028 |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Outstanding letters of credit |  |  | 0 |  |  |
APS | Commercial Paper |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Maximum commercial paper support available under credit facility |  |  | 750,000,000 |  |  |
APS | Commercial Paper | Subsequent Event |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Maximum commercial paper support available under credit facility |  |  |  |  | $ 1,000,000,000 |
APS | Commercial Paper | Revolving Credit Facility Maturing April 2028 |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Commercial paper |  |  | 463,000,000 |  |  |
BCE |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Solar and battery storage capacity (in MW) | MW |  | 31 |  |  |  |
BCE | Term Loan | Non-Recourse Construction Term Loan Facility |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Long-term line of credit |  |  | 33,000,000 |  |  |
Debt instrument, face amount |  | $ 42,000,000 |  |  |  |
BCE | Letter of Credit |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Debt instrument, face amount |  | 5,000,000 |  |  |  |
BCE | Letter of Credit | Revolving Credit Facility Maturing April 2028 |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Outstanding letters of credit |  |  | 2,500,000 |  |  |
BCE | Bridge Loan | Equity Bridge Loan Facility |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Debt instrument, face amount |  | 33,000,000 |  |  |  |
Issuance of long-term debt |  |  | $ 28,000,000 |  |  |
BCE | Pinnacle West | Bridge Loan |  |  |  |  |  |
Long-Term Debt and Liquidity Matters |  |  |  |  |  |
Debt guarantee |  | $ 42,000,000 |  |  |  |

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