Adjustments to Additional Paid in Capital, Contributions from Parent

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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.

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- Definition

Represents the number of line of credit facilities.

+ References

No definition available.

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- Definition

Public Utilities, Solar and Battery Storage Capacity

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No definition available.

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- Definition

Regulatory Matters, Long-term Debt Limit

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No definition available.

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- Definition

Regulatory Matters, Long-term Debt, Percentage Of Capitalization

+ 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.

+ References

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- Definition

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

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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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- 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

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for financing purchases of goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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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.

+ References

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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.

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- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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Long-Term Debt and Liquidity Matters - Narrative (Details)					3 Months Ended
	Apr. 25, 2022 USD ($)	Feb. 11, 2022 USD ($) MW	Jan. 06, 2022 USD ($)	Dec. 21, 2021 USD ($)	Mar. 31, 2022 USD ($) creditFacility	Mar. 31, 2021 USD ($)	Apr. 06, 2022 USD ($)	May 28, 2021 USD ($)	Dec. 23, 2020 USD ($)	Dec. 17, 2020 USD ($)
Long-Term Debt and Liquidity Matters
Issuance of long-term debt					$ 312,052,000	$ 150,000,000
Pinnacle West \| Term Loan
Long-Term Debt and Liquidity Matters
Debt instrument, face amount									$ 150,000,000
Pinnacle West \| Term Loan \| Term Loan Maturing 2021
Long-Term Debt and Liquidity Matters
Debt instrument, face amount				$ 450,000,000
Issuance of long-term debt			$ 300,000,000	$ 150,000,000
Pinnacle West \| Revolving Credit Facility \| Revolving Credit Facility Maturing May 2026
Long-Term Debt and Liquidity Matters
Current borrowing capacity on credit facility					200,000,000			$ 200,000,000
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders (up to)								$ 300,000,000
Long-term line of credit					0
Pinnacle West \| Letter of Credit \| Revolving Credit Facility Maturing May 2026
Long-Term Debt and Liquidity Matters
Outstanding letters of credit					0
Pinnacle West \| Commercial paper \| Revolving Credit Facility Maturing May 2026
Long-Term Debt and Liquidity Matters
Commercial paper					13,000,000
APS
Long-Term Debt and Liquidity Matters
Percentage of capitalization										7.00%
Capacity available for trade purchases										$ 500,000,000
Long-term debt limit										$ 7,500,000,000
Equity infusion from Pinnacle West			$ 150,000,000		150,000,000
APS \| Subsequent Event
Long-Term Debt and Liquidity Matters
Long-term debt limit							$ 8,000,000,000
APS \| Revolving Credit Facility \| Revolving Credit Facility Maturing May 2026
Long-Term Debt and Liquidity Matters
Current borrowing capacity on credit facility					1,000,000,000
Maximum borrowing capacity on credit facility upon satisfaction of certain conditions and consent of lenders (up to)					1,400,000,000
APS \| Revolving Credit Facility \| Revolving Credit Facility Maturing May 2026, Facility One
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)					700,000,000
APS \| Revolving Credit Facility \| Revolving Credit Facility Maturing May 2026, Facility Two
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)					700,000,000
APS \| Revolving Credit Facility \| Revolving Credit Facility Maturing in 2022 and 2023
Long-Term Debt and Liquidity Matters
Long-term line of credit					$ 0
Number of line of credit facilities \| creditFacility					2
APS \| Letter of Credit \| Revolving Credit Facility Maturing May 2026
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 \| Revolving Credit Facility Maturing May 2026
Long-Term Debt and Liquidity Matters
Commercial paper					250,000,000
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
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 \| Bridge Loan \| Equity Bridge Loan Facility
Long-Term Debt and Liquidity Matters
Debt instrument, face amount		$ 33,000,000
Issuance of long-term debt					$ 12,000,000
BCE \| Bridge Loan \| Equity Bridge Loan Facility \| Subsequent Event
Long-Term Debt and Liquidity Matters
Issuance of long-term debt	$ 7,000,000