3.22.0.1 html 609 632 1 false 130 0 false 13 false false R1.htm 0001001 - Document - Cover Document Sheet http://www.iplpower.com/role/CoverDocument Cover Document Cover 1 false false R2.htm 0002002 - Document - Audit Information Sheet http://www.iplpower.com/role/AuditInformation Audit Information Notes 2 false false R3.htm 1001003 - Statement - Consolidated Statements Of Income Sheet http://www.iplpower.com/role/ConsolidatedStatementsOfIncome Consolidated Statements Of Income Uncategorized 3 false false R4.htm 1002004 - Statement - Consolidated Balance Sheets Sheet http://www.iplpower.com/role/ConsolidatedBalanceSheets Consolidated Balance Sheets Statements 4 false false R5.htm 1003005 - Statement - Consolidated Statements Of Cash Flows Sheet http://www.iplpower.com/role/ConsolidatedStatementsOfCashFlows Consolidated Statements Of Cash Flows Statements 5 false false R6.htm 1004006 - Statement - Consolidated Statements Of Common Shareholders' Equity (Deficit) And Noncontrolling Interest Sheet http://www.iplpower.com/role/ConsolidatedStatementsOfCommonShareholdersEquityDeficitAndNoncontrollingInterest Consolidated Statements Of Common Shareholders' Equity (Deficit) And Noncontrolling Interest Statements 6 false false R7.htm 1005007 - Statement - Consolidated Statements of Comprehensive Income Statement Sheet http://www.iplpower.com/role/ConsolidatedStatementsofComprehensiveIncomeStatement Consolidated Statements of Comprehensive Income Statement Statements 7 false false R8.htm 2101101 - Disclosure - Overview and Summary of Significant Accounting Policies Sheet http://www.iplpower.com/role/OverviewandSummaryofSignificantAccountingPolicies Overview and Summary of Significant Accounting Policies Notes 8 false false R9.htm 2105102 - Disclosure - Property, Plant and Equipment Sheet http://www.iplpower.com/role/PropertyPlantandEquipment Property, Plant and Equipment Notes 9 false false R10.htm 2110103 - Disclosure - Fair Value Sheet http://www.iplpower.com/role/FairValue Fair Value Notes 10 false false R11.htm 2116104 - Disclosure - Regulatory Matters Sheet http://www.iplpower.com/role/RegulatoryMatters Regulatory Matters Notes 11 false false R12.htm 2120105 - Disclosure - Derivative Instruments and Hedging Activities Sheet http://www.iplpower.com/role/DerivativeInstrumentsandHedgingActivities Derivative Instruments and Hedging Activities Notes 12 false false R13.htm 2123106 - Disclosure - Equity Sheet http://www.iplpower.com/role/Equity Equity Notes 13 false false R14.htm 2127107 - Disclosure - Debt Sheet http://www.iplpower.com/role/Debt Debt Notes 14 false false R15.htm 2132108 - Disclosure - Income Taxes Sheet http://www.iplpower.com/role/IncomeTaxes Income Taxes Notes 15 false false R16.htm 2139109 - Disclosure - Benefit Plans Sheet http://www.iplpower.com/role/BenefitPlans Benefit Plans Notes 16 false false R17.htm 2149110 - Disclosure - Commitments and Contingencies Sheet http://www.iplpower.com/role/CommitmentsandContingencies Commitments and Contingencies Notes 17 false false R18.htm 2151111 - Disclosure - Related Party Transactions Sheet http://www.iplpower.com/role/RelatedPartyTransactions Related Party Transactions Notes 18 false false R19.htm 2153112 - Disclosure - Business Segment Information Sheet http://www.iplpower.com/role/BusinessSegmentInformation Business Segment Information Notes 19 false false R20.htm 2157113 - Disclosure - Revenue Sheet http://www.iplpower.com/role/Revenue Revenue Notes 20 false false R21.htm 2160114 - Disclosure - Leases Sheet http://www.iplpower.com/role/Leases Leases Notes 21 false false R22.htm 2164115 - Disclosure - Risks and Uncertainties Sheet http://www.iplpower.com/role/RisksandUncertainties Risks and Uncertainties Notes 22 false false R23.htm 2167116 - Disclosure - Subsequent Events Sheet http://www.iplpower.com/role/SubsequentEvents Subsequent Events Notes 23 false false R24.htm 2170117 - Disclosure - Schedule I - Condensed Financial Information Of Registrant Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant Schedule I - Condensed Financial Information Of Registrant Notes 24 false false R25.htm 2180118 - Disclosure - Schedule II - Valuation And Qualifying Accounts And Reserves Sheet http://www.iplpower.com/role/ScheduleIIValuationAndQualifyingAccountsAndReserves Schedule II - Valuation And Qualifying Accounts And Reserves Notes 25 false false R26.htm 2202201 - Disclosure - Overview and Summary of Significant Accounting Policies (Policy) Sheet http://www.iplpower.com/role/OverviewandSummaryofSignificantAccountingPoliciesPolicy Overview and Summary of Significant Accounting Policies (Policy) Policies http://www.iplpower.com/role/OverviewandSummaryofSignificantAccountingPolicies 26 false false R27.htm 2303301 - Disclosure - Overview and Summary of Significant Accounting Policies Accounting Policies (Tables) Sheet http://www.iplpower.com/role/OverviewandSummaryofSignificantAccountingPoliciesAccountingPoliciesTables Overview and Summary of Significant Accounting Policies Accounting Policies (Tables) Tables 27 false false R28.htm 2306302 - Disclosure - Property, Plant and Equipment (Tables) Sheet http://www.iplpower.com/role/PropertyPlantandEquipmentTables Property, Plant and Equipment (Tables) Tables http://www.iplpower.com/role/PropertyPlantandEquipment 28 false false R29.htm 2311303 - Disclosure - Fair Value (Tables) Sheet http://www.iplpower.com/role/FairValueTables Fair Value (Tables) Tables http://www.iplpower.com/role/FairValue 29 false false R30.htm 2317304 - Disclosure - Regulatory Matters (Tables) Sheet http://www.iplpower.com/role/RegulatoryMattersTables Regulatory Matters (Tables) Tables http://www.iplpower.com/role/RegulatoryMatters 30 false false R31.htm 2321305 - Disclosure - Derivative Instruments and Hedging Activities (Tables) Sheet http://www.iplpower.com/role/DerivativeInstrumentsandHedgingActivitiesTables Derivative Instruments and Hedging Activities (Tables) Tables http://www.iplpower.com/role/DerivativeInstrumentsandHedgingActivities 31 false false R32.htm 2324306 - Disclosure - Equity (Tables) Sheet http://www.iplpower.com/role/EquityTables Equity (Tables) Tables http://www.iplpower.com/role/Equity 32 false false R33.htm 2328307 - Disclosure - Debt (Tables) Sheet http://www.iplpower.com/role/DebtTables Debt (Tables) Tables http://www.iplpower.com/role/Debt 33 false false R34.htm 2333308 - Disclosure - Income Taxes (Tables) Sheet http://www.iplpower.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.iplpower.com/role/IncomeTaxes 34 false false R35.htm 2340309 - Disclosure - Benefit Plans (Tables) Sheet http://www.iplpower.com/role/BenefitPlansTables Benefit Plans (Tables) Tables http://www.iplpower.com/role/BenefitPlans 35 false false R36.htm 2354310 - Disclosure - Business Segment Information (Tables) Sheet http://www.iplpower.com/role/BusinessSegmentInformationTables Business Segment Information (Tables) Tables http://www.iplpower.com/role/BusinessSegmentInformation 36 false false R37.htm 2358311 - Disclosure - Revenue (Tables) Sheet http://www.iplpower.com/role/RevenueTables Revenue (Tables) Tables http://www.iplpower.com/role/Revenue 37 false false R38.htm 2404401 - Disclosure - Overview and Summary of Significant Accounting Policies (Details) Sheet http://www.iplpower.com/role/OverviewandSummaryofSignificantAccountingPoliciesDetails Overview and Summary of Significant Accounting Policies (Details) Details http://www.iplpower.com/role/OverviewandSummaryofSignificantAccountingPoliciesAccountingPoliciesTables 38 false false R39.htm 2407402 - Disclosure - Property, Plant and Equipment (Narrative) (Details) Sheet http://www.iplpower.com/role/PropertyPlantandEquipmentNarrativeDetails Property, Plant and Equipment (Narrative) (Details) Details http://www.iplpower.com/role/PropertyPlantandEquipmentTables 39 false false R40.htm 2408403 - Disclosure - Property, Plant and Equipment (Schedule Of Original Cost Of Utility Plant In Service) (Details) Sheet http://www.iplpower.com/role/PropertyPlantandEquipmentScheduleOfOriginalCostOfUtilityPlantInServiceDetails Property, Plant and Equipment (Schedule Of Original Cost Of Utility Plant In Service) (Details) Details http://www.iplpower.com/role/PropertyPlantandEquipmentTables 40 false false R41.htm 2409404 - Disclosure - Property, Plant and Equipment ARO (Reconciliation of Asset Retirement Obligation Liability) (Details) Sheet http://www.iplpower.com/role/PropertyPlantandEquipmentAROReconciliationofAssetRetirementObligationLiabilityDetails Property, Plant and Equipment ARO (Reconciliation of Asset Retirement Obligation Liability) (Details) Details http://www.iplpower.com/role/PropertyPlantandEquipmentTables 41 false false R42.htm 2412405 - Disclosure - Fair Value (Narrative) (Details) Sheet http://www.iplpower.com/role/FairValueNarrativeDetails Fair Value (Narrative) (Details) Details http://www.iplpower.com/role/FairValueTables 42 false false R43.htm 2413406 - Disclosure - Fair Value (Summary Of Fair Value Assets And Liabilities Measured On A Recurring Basis, Level 3) (Details) Sheet http://www.iplpower.com/role/FairValueSummaryOfFairValueAssetsAndLiabilitiesMeasuredOnARecurringBasisLevel3Details Fair Value (Summary Of Fair Value Assets And Liabilities Measured On A Recurring Basis, Level 3) (Details) Details http://www.iplpower.com/role/FairValueTables 43 false false R44.htm 2414407 - Disclosure - Fair Value (Reconciliation Of Financial Instruments Classified As Level 3) (Details) Sheet http://www.iplpower.com/role/FairValueReconciliationOfFinancialInstrumentsClassifiedAsLevel3Details Fair Value (Reconciliation Of Financial Instruments Classified As Level 3) (Details) Details http://www.iplpower.com/role/FairValueTables 44 false false R45.htm 2415408 - Disclosure - Fair Value (Schedule Of Face And Fair Value Of Debt) (Details) Sheet http://www.iplpower.com/role/FairValueScheduleOfFaceAndFairValueOfDebtDetails Fair Value (Schedule Of Face And Fair Value Of Debt) (Details) Details http://www.iplpower.com/role/FairValueTables 45 false false R46.htm 2418409 - Disclosure - Regulatory Matters (Narrative) (Details) Sheet http://www.iplpower.com/role/RegulatoryMattersNarrativeDetails Regulatory Matters (Narrative) (Details) Details http://www.iplpower.com/role/RegulatoryMattersTables 46 false false R47.htm 2419410 - Disclosure - Regulatory Matters (Schedule Of Regulatory Assets And Liabilities) (Details) Sheet http://www.iplpower.com/role/RegulatoryMattersScheduleOfRegulatoryAssetsAndLiabilitiesDetails Regulatory Matters (Schedule Of Regulatory Assets And Liabilities) (Details) Details http://www.iplpower.com/role/RegulatoryMattersTables 47 false false R48.htm 2422411 - Disclosure - Derivative Instruments and Hedging Activities (Details) Sheet http://www.iplpower.com/role/DerivativeInstrumentsandHedgingActivitiesDetails Derivative Instruments and Hedging Activities (Details) Details http://www.iplpower.com/role/DerivativeInstrumentsandHedgingActivitiesTables 48 false false R49.htm 2425412 - Disclosure - Equity (Narrative) (Details) Sheet http://www.iplpower.com/role/EquityNarrativeDetails Equity (Narrative) (Details) Details http://www.iplpower.com/role/EquityTables 49 false false R50.htm 2426413 - Disclosure - Equity (Summary Of Preferred Stock) (Details) Sheet http://www.iplpower.com/role/EquitySummaryOfPreferredStockDetails Equity (Summary Of Preferred Stock) (Details) Details http://www.iplpower.com/role/EquityTables 50 false false R51.htm 2429414 - Disclosure - Debt (Narrative) (Details) Sheet http://www.iplpower.com/role/DebtNarrativeDetails Debt (Narrative) (Details) Details http://www.iplpower.com/role/DebtTables 51 false false R52.htm 2430415 - Disclosure - Debt (Schedule Long-Term Indebtedness) (Details) Sheet http://www.iplpower.com/role/DebtScheduleLongTermIndebtednessDetails Debt (Schedule Long-Term Indebtedness) (Details) Details http://www.iplpower.com/role/DebtTables 52 false false R53.htm 2431416 - Disclosure - Debt (Schedule Of Maturities On Long-Term Indebtedness) (Details) Sheet http://www.iplpower.com/role/DebtScheduleOfMaturitiesOnLongTermIndebtednessDetails Debt (Schedule Of Maturities On Long-Term Indebtedness) (Details) Details http://www.iplpower.com/role/DebtTables 53 false false R54.htm 2434417 - Disclosure - Income Taxes (Narrative) (Details) Sheet http://www.iplpower.com/role/IncomeTaxesNarrativeDetails Income Taxes (Narrative) (Details) Details http://www.iplpower.com/role/IncomeTaxesTables 54 false false R55.htm 2435418 - Disclosure - Income Taxes (Schedule Of Federal And State Income Taxed Charged To Income) (Details) Sheet http://www.iplpower.com/role/IncomeTaxesScheduleOfFederalAndStateIncomeTaxedChargedToIncomeDetails Income Taxes (Schedule Of Federal And State Income Taxed Charged To Income) (Details) Details http://www.iplpower.com/role/IncomeTaxesTables 55 false false R56.htm 2436419 - Disclosure - Income Taxes (Schedule Of Effective Income Tax Rate) (Details) Sheet http://www.iplpower.com/role/IncomeTaxesScheduleOfEffectiveIncomeTaxRateDetails Income Taxes (Schedule Of Effective Income Tax Rate) (Details) Details http://www.iplpower.com/role/IncomeTaxesTables 56 false false R57.htm 2437420 - Disclosure - Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) Sheet http://www.iplpower.com/role/IncomeTaxesScheduleOfDeferredTaxAssetsAndLiabilitiesDetails Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) Details http://www.iplpower.com/role/IncomeTaxesTables 57 false false R58.htm 2438421 - Disclosure - Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) Sheet http://www.iplpower.com/role/IncomeTaxesReconciliationOfUnrecognizedTaxBenefitsDetails Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) Details http://www.iplpower.com/role/IncomeTaxesTables 58 false false R59.htm 2441422 - Disclosure - Benefit Plans (Narrative) (Details) Sheet http://www.iplpower.com/role/BenefitPlansNarrativeDetails Benefit Plans (Narrative) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 59 false false R60.htm 2442423 - Disclosure - Benefit Plans (Schedule Of Defined Benefit Plans Disclosures) (Details) Sheet http://www.iplpower.com/role/BenefitPlansScheduleOfDefinedBenefitPlansDisclosuresDetails Benefit Plans (Schedule Of Defined Benefit Plans Disclosures) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 60 false false R61.htm 2443424 - Disclosure - Benefit Plans (Information For Pension Plans With A Benefit Obligation In Excess Of Plan Assets) (Details) Sheet http://www.iplpower.com/role/BenefitPlansInformationForPensionPlansWithABenefitObligationInExcessOfPlanAssetsDetails Benefit Plans (Information For Pension Plans With A Benefit Obligation In Excess Of Plan Assets) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 61 false false R62.htm 2444425 - Disclosure - Benefit Plans (Information For Pension Plans With An Accumulated Benefit Obligation In Excess Of Plan Assets) (Details) Sheet http://www.iplpower.com/role/BenefitPlansInformationForPensionPlansWithAnAccumulatedBenefitObligationInExcessOfPlanAssetsDetails Benefit Plans (Information For Pension Plans With An Accumulated Benefit Obligation In Excess Of Plan Assets) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 62 false false R63.htm 2445426 - Disclosure - Benefit Plans (Schedule Of Net Periodic Benefit Costs) (Details) Sheet http://www.iplpower.com/role/BenefitPlansScheduleOfNetPeriodicBenefitCostsDetails Benefit Plans (Schedule Of Net Periodic Benefit Costs) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 63 false false R64.htm 2446427 - Disclosure - Benefit Plans (Schedule Of Asset Allocation Guidelines) (Details) Sheet http://www.iplpower.com/role/BenefitPlansScheduleOfAssetAllocationGuidelinesDetails Benefit Plans (Schedule Of Asset Allocation Guidelines) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 64 false false R65.htm 2447428 - Disclosure - Benefit Plans (Schedule Of Fair Value Of Pension Plan Assets) (Details) Sheet http://www.iplpower.com/role/BenefitPlansScheduleOfFairValueOfPensionPlanAssetsDetails Benefit Plans (Schedule Of Fair Value Of Pension Plan Assets) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 65 false false R66.htm 2448429 - Disclosure - Benefit Plans (Schedule Of Expected Benefit Payments) (Details) Sheet http://www.iplpower.com/role/BenefitPlansScheduleOfExpectedBenefitPaymentsDetails Benefit Plans (Schedule Of Expected Benefit Payments) (Details) Details http://www.iplpower.com/role/BenefitPlansTables 66 false false R67.htm 2450430 - Disclosure - Commitments and Contingencies (Narrative) (Details) Sheet http://www.iplpower.com/role/CommitmentsandContingenciesNarrativeDetails Commitments and Contingencies (Narrative) (Details) Details http://www.iplpower.com/role/CommitmentsandContingencies 67 false false R68.htm 2452431 - Disclosure - Related Party Transactions (Details) Sheet http://www.iplpower.com/role/RelatedPartyTransactionsDetails Related Party Transactions (Details) Details http://www.iplpower.com/role/RelatedPartyTransactions 68 false false R69.htm 2455432 - Disclosure - Business Segment Information (Details) Sheet http://www.iplpower.com/role/BusinessSegmentInformationDetails Business Segment Information (Details) Details http://www.iplpower.com/role/BusinessSegmentInformationTables 69 false false R70.htm 2456433 - Disclosure - Business Segment Information (Summary Of Company's Reporting Segments) (Details) Sheet http://www.iplpower.com/role/BusinessSegmentInformationSummaryOfCompanysReportingSegmentsDetails Business Segment Information (Summary Of Company's Reporting Segments) (Details) Details http://www.iplpower.com/role/BusinessSegmentInformationTables 70 false false R71.htm 2459434 - Disclosure - Revenue (Details) Sheet http://www.iplpower.com/role/RevenueDetails Revenue (Details) Details http://www.iplpower.com/role/RevenueTables 71 false false R72.htm 2463435 - Disclosure - Leases (Details) Sheet http://www.iplpower.com/role/LeasesDetails Leases (Details) Details http://www.iplpower.com/role/Leases 72 false false R73.htm 2466436 - Disclosure - Risks and Uncertainties (Details) Sheet http://www.iplpower.com/role/RisksandUncertaintiesDetails Risks and Uncertainties (Details) Details http://www.iplpower.com/role/RisksandUncertainties 73 false false R74.htm 2469437 - Disclosure - Subsequent Events (Details) Sheet http://www.iplpower.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://www.iplpower.com/role/SubsequentEvents 74 false false R75.htm 2471438 - Disclosure - Schedule I - Condensed Financial Information Of Registrant (Narrative) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantNarrativeDetails Schedule I - Condensed Financial Information Of Registrant (Narrative) (Details) Details http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant 75 false false R76.htm 2472439 - Disclosure - Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Balance Sheet) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantUnconsolidatedBalanceSheetDetails Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Balance Sheet) (Details) Details http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant 76 false false R77.htm 2473440 - Disclosure - Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements Of Income) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantUnconsolidatedStatementsOfIncomeDetails Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements Of Income) (Details) Details http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant 77 false false R78.htm 2474441 - Disclosure - Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements Of Cash Flows) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantUnconsolidatedStatementsOfCashFlowsDetails Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements Of Cash Flows) (Details) Details http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant 78 false false R79.htm 2475442 - Disclosure - Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements Of Common Shareholders' Equity (Deficit)) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantUnconsolidatedStatementsOfCommonShareholdersEquityDeficitDetails Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements Of Common Shareholders' Equity (Deficit)) (Details) Details http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant 79 false false R80.htm 2476443 - Disclosure - Schedule I - Condensed Financial Information Of Registrant (Long-Term Indebtedness) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantLongTermIndebtednessDetails Schedule I - Condensed Financial Information Of Registrant (Long-Term Indebtedness) (Details) Details http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant 80 false false R81.htm 2477444 - Disclosure - Schedule I - Condensed Financial Information Of Registrant Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements of Comprehensive Income/(Loss)) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantScheduleICondensedFinancialInformationOfRegistrantUnconsolidatedStatementsofComprehensiveIncomeLossDetails Schedule I - Condensed Financial Information Of Registrant Schedule I - Condensed Financial Information Of Registrant (Unconsolidated Statements of Comprehensive Income/(Loss)) (Details) Details 81 false false R82.htm 2478445 - Disclosure - Schedule I - Condensed Financial Information Of Registrant Schedule I - Condensed Financial Information Of Registrant (Derivative Instruments and Hedging Activities) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantScheduleICondensedFinancialInformationOfRegistrantDerivativeInstrumentsandHedgingActivitiesDetails Schedule I - Condensed Financial Information Of Registrant Schedule I - Condensed Financial Information Of Registrant (Derivative Instruments and Hedging Activities) (Details) Details 82 false false R83.htm 2479446 - Disclosure - Schedule I - Condensed Financial Information Of Registrant (Fair Value) (Details) Sheet http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrantFairValueDetails Schedule I - Condensed Financial Information Of Registrant (Fair Value) (Details) Details http://www.iplpower.com/role/ScheduleICondensedFinancialInformationOfRegistrant 83 false false R84.htm 2481447 - Disclosure - Schedule II - Valuation And Qualifying Accounts And Reserves (Details) Sheet http://www.iplpower.com/role/ScheduleIIValuationAndQualifyingAccountsAndReservesDetails Schedule II - Valuation And Qualifying Accounts And Reserves (Details) Details http://www.iplpower.com/role/ScheduleIIValuationAndQualifyingAccountsAndReserves 84 false false All Reports Book All Reports ipl-20211231.htm a202110-kexhibit21.htm a202110-kexhibit311.htm a202110-kexhibit312.htm a202110-kexhibit321.htm a202110-kexhibit322.htm ipl-20211231.xsd ipl-20211231_cal.xml ipl-20211231_def.xml ipl-20211231_lab.xml ipl-20211231_pre.xml ipl-20211231_g1.jpg http://fasb.org/srt/2021-01-31 http://fasb.org/us-gaap/2021-01-31 http://xbrl.sec.gov/dei/2021q4 true true