Income Taxes - Additional Information (Details) $ in Millions	12 Months Ended
Dec. 31, 2023 USD ($)
Income Taxes
Income tax expense attributable to non controlling interests	$ 0
Interest expense to be received on the underpayment of income taxes	1
Increase (decrease) in deferred income taxes due to regulation adoption	12
Arizona Public Service Company
Income Taxes
Increase (decrease) in deferred income taxes due to regulation adoption	12
Federal
Income Taxes
State credit carryforwards net of federal benefit	56
Federal \| Arizona Public Service Company
Income Taxes
State credit carryforwards net of federal benefit	15
State
Income Taxes
State credit carryforwards net of federal benefit	56
State \| Arizona Public Service Company
Income Taxes
State credit carryforwards net of federal benefit	$ 15

The sum of the current income tax expense or benefit attributable to non-controlling interests.

No definition available.

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- Definition

The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa, due to the adoption of regulations.

+ References

No definition available.

+ Details

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- Definition

Represents the amount of interest income to be received on the overpayment of income taxes for certain adjustments that the company has filed, or will file, with the IRS.

+ References

No definition available.

+ Details

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- Definition

Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-6

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-8

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-3

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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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