Increased Contributions From Parent

No definition available.

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- Definition

Line of Credit Facility, Accordion Feature, Increase Limit

+ References

No definition available.

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- Definition

Represents the maximum borrowings available for the commercial paper program under the terms of line of credit facility.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of capitalization which is used to calculate the short-term debt authorization pursuant to an order from a regulatory authority.

+ References

No definition available.

+ Details

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- Definition

Represents the fixed amount required to be used for purchases of natural gas and power which is used to calculate the short-term debt authorization pursuant to an order from a regulatory authority.

+ References

No definition available.

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Period Type:	instant

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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- Definition

The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Lines of Credit and Short-Term Borrowings - Additional Information (Details) - USD ($) $ in Thousands					1 Months Ended
	Dec. 20, 2024	Dec. 05, 2024	Feb. 09, 2024	Dec. 12, 2023	Jun. 30, 2024	Dec. 31, 2024	Dec. 17, 2024	Aug. 02, 2024	Dec. 31, 2023	Oct. 27, 2023	Apr. 10, 2023	Apr. 09, 2023
Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Requested equity contributions limit							$ 9,500,000			$ 500,000
Arizona Public Service Company \| ACC
Lines of Credit and Short-Term Borrowings
Percentage of APS's capitalization used in calculation of short-term debt authorization							7.00%
Required amount to be used in purchases of natural gas and power which is used in calculation of short-term debt authorization							$ 500,000
Term Loan \| Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Debt instrument term		364 days		364 days
Notes issued		$ 400,000		$ 350,000
Debt instrument, basis spread on variable rate		0.90%		1.00%
Loan amount drawn			$ 350,000
Revolving credit facility \| Revolving Credit Facility Maturing April 2029 \| Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Current borrowing capacity on credit facility								$ 1,250,000
Accordion feature, increase limit								400,000
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders								1,650,000
Long-term line of credit						$ 0
Debt, weighted average interest rate						4.62%
Commercial paper
Lines of Credit and Short-Term Borrowings
Current borrowing capacity on credit facility						$ 2,050,000			$ 1,450,000
Long-term line of credit						568,450			609,500
Commercial paper \| Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Current borrowing capacity on credit facility						1,650,000			1,250,000
Maximum commercial paper support available under credit facility											$ 1,000,000	$ 750,000
Long-term line of credit						339,900			532,850
Commercial paper \| Revolving Credit Facility Maturing April 2029 \| Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Commercial paper						340,000
Letter of Credit \| Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Outstanding letters of credit						18,000
Letter of Credit \| Revolving Credit Facility Maturing April 2029 \| Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Outstanding letters of credit						0
Pinnacle West \| Term Loan
Lines of Credit and Short-Term Borrowings
Debt instrument term		364 days
Notes issued		$ 200,000
Debt instrument, basis spread on variable rate		0.95%
Loan amount drawn	$ 200,000
Pinnacle West \| Term Loan \| Arizona Public Service Company
Lines of Credit and Short-Term Borrowings
Debt instrument term					364 days
Pinnacle West \| Revolving credit facility \| Revolving Credit Facility Maturing April 2029
Lines of Credit and Short-Term Borrowings
Current borrowing capacity on credit facility								200,000
Accordion feature, increase limit								300,000
Long-term line of credit						0
Pinnacle West \| Commercial paper
Lines of Credit and Short-Term Borrowings
Current borrowing capacity on credit facility						400,000			200,000
Long-term line of credit						$ 228,550			$ 76,650
Pinnacle West \| Commercial paper \| Revolving Credit Facility Maturing April 2029
Lines of Credit and Short-Term Borrowings
Commercial paper								$ 29,000
Debt, weighted average interest rate						4.58%
Pinnacle West \| Letter of Credit \| Revolving Credit Facility Maturing April 2029
Lines of Credit and Short-Term Borrowings
Outstanding letters of credit						$ 0