XML 101 R88.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Income Taxes (Details) - Discontinued Operations, Disposed of by Sale - Bright Canyou Energy Corportion $ in Millions | Jan. 30, 2024 USD ($)
--- | ---
Income Tax Contingency [Line Items] |
Investment tax credits | $ 23
Payments to acquire investment tax credits | $ 21

X
- Definition Disposal Group, Including Discontinued Operation, Option To Purchase Investment Tax Credits Generated By Disposed Assets, Amount + References No definition available. + Details
Name: | pnw_DisposalGroupIncludingDiscontinuedOperationOptionToPurchaseInvestmentTaxCreditsGeneratedByDisposedAssetsAmount
Namespace Prefix: | pnw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Payments to Acquire Investment Tax Credit + References No definition available. + Details
Name: | pnw_PaymentsToAcquireInvestmentTaxCredit
Namespace Prefix: | pnw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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. + Details
Name: | us-gaap_IncomeTaxContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DisposalGroupClassificationAxis=us-gaap_DiscontinuedOperationsDisposedOfBySaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=pnw_BrightCanyouEnergyCorportionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |