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The consolidated debt to total consolidated capitalization ratio, which the entity is required to maintain pursuant to a debt covenant.

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The actual consolidated debt to total consolidated capitalization ratio, which the entity is required to maintain pursuant to a debt covenant.

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Represents the long-term debt authorization pursuant to an order from a regulatory authority.

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- Definition

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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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 - Additional Information (Details) - USD ($) $ in Thousands				12 Months Ended
	Feb. 11, 2022	Jan. 06, 2022	Dec. 21, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 23, 2020	Dec. 17, 2020	Dec. 16, 2020	May 05, 2020
Long-Term Debt and Liquidity Matters [Line Items]
Proceeds from issuance of debt				$ 746,999	$ 1,596,672	$ 1,092,188
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]
Proceeds from issuance of debt				$ 446,999	1,099,722	1,092,188
Equity infusion from Pinnacle West				$ 150,000	150,000	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)				50.00%
Arizona Public Service Company \| ACC
Debt Provisions
Long term debt authorization								$ 7,500,000	$ 5,900,000
Subsequent Event \| Arizona Public Service Company
Long-Term Debt and Liquidity Matters [Line Items]
Equity infusion from Pinnacle West		$ 150,000
Unsecured Senior Notes Maturing 2031 \| Senior Notes \| Arizona Public Service Company
Long-Term Debt and Liquidity Matters [Line Items]
Debt issued			$ 450,000
Interest rate (as a percent)			2.20%
Term Loan \| Non-Recourse Construction Term Loan Facility \| Subsequent Event \| Bright Canyon Energy Corporation
Long-Term Debt and Liquidity Matters [Line Items]
Debt issued	$ 42,000
Bridge Loan \| Equity Bridge Loan Facility \| Subsequent Event \| Bright Canyon Energy Corporation
Long-Term Debt and Liquidity Matters [Line Items]
Debt issued	33,000
Proceeds from issuance of debt	12,000
Letter of Credit \| Subsequent Event \| Bright Canyon Energy Corporation
Long-Term Debt and Liquidity Matters [Line Items]
Debt issued	$ 5,000
Pinnacle West
Long-Term Debt and Liquidity Matters [Line Items]
Proceeds from issuance of debt				$ 300,000	$ 496,950	$ 0
Debt Provisions
Actual ratio of consolidated debt to total consolidated capitalization required to be maintained as per the debt covenant (as a percent)				56.00%
Pinnacle West \| Term Loan
Long-Term Debt and Liquidity Matters [Line Items]
Debt issued							$ 150,000			$ 31,000
Pinnacle West \| Term Loan \| Term Loan Maturing 2021
Long-Term Debt and Liquidity Matters [Line Items]
Debt issued			$ 450,000
Proceeds from issuance of debt			$ 150,000
Pinnacle West \| Term Loan \| Term Loan Maturing 2021 \| Subsequent Event
Long-Term Debt and Liquidity Matters [Line Items]
Proceeds from issuance of debt		$ 300,000