1.0.0.3 false CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data false 1 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 3 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 false 4 $ false false u000 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 u001 Standard http://www.xbrl.org/2003/instance shares xbrli 0 u002 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 5 OPERATING REVENUES 3 us-gaap_UtilityRevenueAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 6 Electric 4 us-gaap_ElectricUtilityRevenue us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 2195461000 2195461 false false 2 true true 3209000000 3209000 false false 3 true true 6140823000 6140823 false false 4 true true 7779450000 7779450 false false No definition available. No authoritative reference available. false 7 Natural gas 4 us-gaap_GasDomesticRegulatedRevenue us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 24030000 24030 false false 2 false true 41981000 41981 false false 3 false true 126914000 126914 false false 4 false true 185361000 185361 false false No definition available. No authoritative reference available. false 8 Competitive businesses 4 us-gaap_CompetitiveEnergyRevenue us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 717604000 717604 false false 2 false true 712903000 712903 false false 3 false true 1979259000 1979259 false false 4 false true 2128077000 2128077 false false No definition available. No authoritative reference available. false 9 TOTAL 4 us-gaap_UtilityRevenue us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 2937095000 2937095 false false 2 false true 3963884000 3963884 false false 3 false true 8246996000 8246996 false false 4 false true 10092888000 10092888 false false No definition available. No authoritative reference available. true 10 OPERATING EXPENSES 3 us-gaap_OperatingExpensesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 11 Fuel, fuel-related expenses, and gas purchased for resale 4 us-gaap_UtilitiesOperatingExpenseFuelUsed us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 559129000 559129 false false 2 false true 1270160000 1270160 false false 3 false true 1927692000 1927692 false false 4 false true 2537498000 2537498 false false No definition available. No authoritative reference available. false 12 Purchased power 4 us-gaap_CostOfPurchasedPower us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 388308000 388308 false false 2 false true 764122000 764122 false false 3 false true 1034483000 1034483 false false 4 false true 2132967000 2132967 false false No definition available. No authoritative reference available. false 13 Nuclear refueling outage expenses 4 etr_NuclearRefuelingOutageExpenses etr false na duration monetary Amortization of costs deferred during nuclear refueling outages over the estimated period to the next outage because these... false false false false false false false false false 1 false true 61441000 61441 false false 2 false true 58079000 58079 false false 3 false true 178454000 178454 false false 4 false true 165177000 165177 false false Amortization of costs deferred during nuclear refueling outages over the estimated period to the next outage because these refueling outage expenses are incurred to prepare the units to operate for the next operating cycle without having to be taken off line. No authoritative reference available. false 14 Other operation and maintenance 4 us-gaap_UtilitiesOperatingExpenseMaintenanceAndOperations us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 681576000 681576 false false 2 false true 636989000 636989 false false 3 false true 2021462000 2021462 false false 4 false true 1958566000 1958566 false false No definition available. No authoritative reference available. false 15 Decommissioning 4 us-gaap_AssetRetirementObligationAccretionExpense us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 50069000 50069 false false 2 false true 47515000 47515 false false 3 false true 148119000 148119 false false 4 false true 140327000 140327 false false No definition available. No authoritative reference available. false 16 Taxes other than income taxes 4 us-gaap_TaxesExcludingIncomeAndExciseTaxes us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 128851000 128851 false false 2 false true 140819000 140819 false false 3 false true 385649000 385649 false false 4 false true 375332000 375332 false false No definition available. No authoritative reference available. false 17 Depreciation and amortization 4 us-gaap_Depreciation us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 280641000 280641 false false 2 false true 263656000 263656 false false 3 false true 799183000 799183 false false 4 false true 756617000 756617 false false No definition available. No authoritative reference available. false 18 Other regulatory charges (credits) - net 4 etr_OtherRegulatoryChargesCreditsNet etr false na duration monetary Represents the debit or credit to defer certain costs or revenues because they will be recovered or returned to customers in... false false false false false false false false false 1 false true -13224000 -13224 false false 2 false true 30452000 30452 false false 3 false true -29371000 -29371 false false 4 false true 99970000 99970 false false Represents the debit or credit to defer certain costs or revenues because they will be recovered or returned to customers in the future. No authoritative reference available. false 19 TOTAL 4 us-gaap_OperatingExpenses us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 2136791000 2136791 false false 2 false true 3211792000 3211792 false false 3 false true 6465671000 6465671 false false 4 false true 8166454000 8166454 false false No definition available. No authoritative reference available. true 20 OPERATING INCOME 3 us-gaap_OperatingIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 800304000 800304 false false 2 false true 752092000 752092 false false 3 false true 1781325000 1781325 false false 4 false true 1926434000 1926434 false false No definition available. No authoritative reference available. true 21 OTHER INCOME 3 us-gaap_NonoperatingIncomeExpenseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 22 Allowance for equity funds used during construction 4 us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 14770000 14770 false false 2 false true 10411000 10411 false false 3 false true 47499000 47499 false false 4 false true 28782000 28782 false false No definition available. No authoritative reference available. false 23 Interest and dividend income 4 us-gaap_InvestmentIncomeInterestAndDividend us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 64730000 64730 false false 2 false true 37533000 37533 false false 3 false true 170007000 170007 false false 4 false true 143273000 143273 false false No definition available. No authoritative reference available. false 24 Other than temporary impairment losses 4 us-gaap_ImpairmentOfInvestments us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -457000 -457 false false 2 false true -7133000 -7133 false false 3 false true -85396000 -85396 false false 4 false true -35193000 -35193 false false No definition available. No authoritative reference available. false 25 Equity in earnings (loss) of unconsolidated equity affiliates 4 us-gaap_IncomeLossFromEquityMethodInvestments us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 1316000 1316 false false 2 false true 1459000 1459 false false 3 false true -442000 -442 false false 4 false true -2042000 -2042 false false No definition available. No authoritative reference available. false 26 Miscellaneous - net 4 us-gaap_OtherNonoperatingIncomeExpense us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 4423000 4423 false false 2 false true 5200000 5200 false false 3 false true -20468000 -20468 false false 4 false true -2439000 -2439 false false No definition available. No authoritative reference available. false 27 TOTAL 4 us-gaap_NonoperatingIncomeExpense us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 84782000 84782 false false 2 false true 47470000 47470 false false 3 false true 111200000 111200 false false 4 false true 132381000 132381 false false No definition available. No authoritative reference available. true 28 INTEREST AND OTHER CHARGES 3 us-gaap_InterestExpenseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 29 Interest on long-term debt 4 us-gaap_InterestExpenseDebt us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 130132000 130132 false false 2 false true 128746000 128746 false false 3 false true 383255000 383255 false false 4 false true 371793000 371793 false false No definition available. No authoritative reference available. false 30 Other interest - net 4 us-gaap_InterestIncomeExpenseNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 22625000 22625 false false 2 false true 33229000 33229 false false 3 false true 69406000 69406 false false 4 false true 93795000 93795 false false No definition available. No authoritative reference available. false 31 Allowance for borrowed funds used during construction 4 us-gaap_PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -8252000 -8252 false false 2 false true -5939000 -5939 false false 3 false true -26547000 -26547 false false 4 false true -15992000 -15992 false false No definition available. No authoritative reference available. false 32 TOTAL 4 us-gaap_InterestExpense us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 144505000 144505 false false 2 false true 156036000 156036 false false 3 false true 426114000 426114 false false 4 false true 449596000 449596 false false No definition available. No authoritative reference available. true 33 INCOME BEFORE INCOME TAXES 3 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 740581000 740581 false false 2 false true 643526000 643526 false false 3 false true 1466411000 1466411 false false 4 false true 1609219000 1609219 false false No definition available. No authoritative reference available. true 34 Income taxes 3 us-gaap_IncomeTaxExpenseBenefit us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 280414000 280414 false false 2 false true 168239000 168239 false false 3 false true 534101000 534101 false false 4 false true 544256000 544256 false false No definition available. No authoritative reference available. false 35 CONSOLIDATED NET INCOME 3 us-gaap_ProfitLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 460167000 460167 false false 2 false true 475287000 475287 false false 3 false true 932310000 932310 false false 4 false true 1064963000 1064963 false false No definition available. No authoritative reference available. true 36 Preferred dividend requirements of subsidiaries 3 us-gaap_MinorityInterestInNetIncomeLossPreferredUnitHolders us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 4998000 4998 false false 2 false true 4998000 4998 false false 3 false true 14993000 14993 false false 4 false true 14971000 14971 false false No definition available. No authoritative reference available. false 37 NET INCOME ATTRIBUTABLE TO ENTERGY CORPORATION 3 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 455169000 455169 false false 2 true true 470289000 470289 false false 3 true true 917317000 917317 false false 4 true true 1049992000 1049992 false false No definition available. No authoritative reference available. true 38 Earnings per average common share 3 us-gaap_EarningsPerShareAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false 4 false false 0 0 false false No definition available. false 39 Basic 4 us-gaap_EarningsPerShareBasic us-gaap true na duration decimal No definition available. false false false false false false false false true 1 true true 2.35 2.35 false false 2 true true 2.47 2.47 false false 3 true true 4.73 4.73 false false 4 true true 5.48 5.48 false false No definition available. No authoritative reference available. false 40 Diluted 4 us-gaap_EarningsPerShareDiluted us-gaap true na duration decimal No definition available. false false false false false false false false true 1 true true 2.32 2.32 false false 2 true true 2.41 2.41 false false 3 true true 4.66 4.66 false false 4 true true 5.33 5.33 false false No definition available. No authoritative reference available. false 41 Dividends declared per common share 3 us-gaap_CommonStockDividendsPerShareDeclared us-gaap true na duration decimal No definition available. false false false false false false false false true 1 true true 0.75 0.75 false false 2 true true 0.75 0.75 false false 3 true true 2.25 2.25 false false 4 true true 2.25 2.25 false false No definition available. No authoritative reference available. false 42 Basic average number of common shares outstanding 3 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 193424904 193424904.00 false false 2 false true 190379009 190379009.00 false false 3 false true 194044214 194044214.00 false false 4 false true 191444611 191444611.00 false false No definition available. No authoritative reference available. false 43 Diluted average number of common shares outstanding 3 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding us-gaap true na duration shares No definition available. false false false false false false false false false 1 false true 195875241 195875241.00 false false 2 false true 194960830 194960830.00 false false 3 false true 197382562 197382562.00 false false 4 false true 197064629 197064629.00 false false No definition available. No authoritative reference available. false false 4 39 false Thousands NoRounding NoRounding false true