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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 32 -Subparagraph c false 9 Business Segment Information (Textuals) [Abstract] 2 etr_BusinessSegmentInformationTextualsAbstract etr false na duration Business Segment Information. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Business Segment Information. false 10 Number of nuclear power plants operated 2 etr_NumberOfNuclearPowerPlantsOperated etr false na duration Number of nuclear power plants operated. false false false false false false false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false true false false 6 6 false false false 5 false false false false 0 0 false false false xbrli:integerItemType integer Number of nuclear power plants operated. 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No authoritative reference available. false 17 Entergy Arkansa's [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/businesssegmentinformationdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 6 USD true false false false Entergy Arkansa's [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 7 USD true false false false Entergy Arkansa's [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SubsidiariesMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 18 Segment Financial Information 2 etr_SegmentFinancialInformationAbstract etr false na duration Segment Financial Information. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Segment Financial Information. false 23 Consolidated net income (loss) 2 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 497901000 497901000 false false false 2 false false false false 0 0 false false false 3 false true false false 460167000 460167000 false false false 4 false false false false 0 0 [1] false false false 5 false false false false 0 0 [1] false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 33 Entergy Gulf States Louisiana [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/businesssegmentinformationdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 8 USD true false false false Entergy Gulf States Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryOneMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 9 USD true false false false Entergy Gulf States Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryOneMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 34 Segment Financial Information 2 etr_SegmentFinancialInformationAbstract etr false na duration Segment Financial Information. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Segment Financial Information. false 39 Consolidated net income (loss) 2 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 76939000 76939000 false false false 2 false false false false 0 0 false false false 3 false true false false 46212000 46212000 false false false 4 false false false false 0 0 [1] false false false 5 false false false false 0 0 [1] false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 49 Entergy Louisiana [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/businesssegmentinformationdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 10 USD true false false false Entergy Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 11 USD true false false false Entergy Louisiana [Member] dei_LegalEntityAxis xbrldi http://xbrl.org/2006/xbrldi etr_RegistrantSubsidiaryTwoMember dei_LegalEntityAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 50 Segment Financial Information 2 etr_SegmentFinancialInformationAbstract etr false na duration Segment Financial Information. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Segment Financial Information. false 55 Consolidated net income (loss) 2 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 94320000 94320000 false false false 2 false false false false 0 0 false false false 3 false true false false 86969000 86969000 false false false 4 false false false false 0 0 [1] false false false 5 false false false false 0 0 [1] false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 65 Utility [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/businesssegmentinformationdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 12 USD true false false false Utility [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_UtilityMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 13 USD true false false false Utility [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_UtilityMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 14 USD true false false false Utility [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_UtilityMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 15 USD true false false false Utility [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_UtilityMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 66 Segment Financial Information 2 etr_SegmentFinancialInformationAbstract etr false na duration Segment Financial Information. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Segment Financial Information. false 67 Operating revenues 2 us-gaap_SegmentReportingInformationRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 2666727000 2666727000 false false false 2 false false false false 0 0 false false false 3 false true false false 2220285000 2220285000 false false false 4 false true false false 7016664000 7016664000 false false false 5 false true false false 6270322000 6270322000 false false false xbrli:monetaryItemType monetary Amount of total revenue for the reportable segment, including revenue from external customers, transactions with other operating segments of the same entity, and (gross) interest revenue. All considered to be "operating revenue" for purposes of the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27 -Subparagraph a, b, c false 70 Income taxes (benefit) 2 us-gaap_SegmentReportingInformationIncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 216590000 216590000 false false false 2 false false false false 0 0 false false false 3 false true false false 180054000 180054000 false false false 4 false true false false 447607000 447607000 false false false 5 false true false false 358218000 358218000 false false false xbrli:monetaryItemType monetary Amount of income tax expense or benefit attributed to the reportable segment. Must be disclosed if the amount (a) is included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27 -Subparagraph h false 71 Consolidated net income (loss) 2 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 337941000 337941000 false false false 2 false false false false 0 0 false false false 3 false true false false 299090000 299090000 false false false 4 false true false false 711085000 711085000 false false false 5 false true false false 566634000 566634000 false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 72 Total assets 2 us-gaap_SegmentReportingSegmentAssets us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 30373464000 30373464000 false false false 2 false false false false 0 0 false false false 3 false true false false 29033139000 29033139000 false false false 4 false true false false 30373464000 30373464000 false false false 5 false true false false 29033139000 29033139000 false false false xbrli:monetaryItemType monetary Total assets for reportable segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 32 -Subparagraph c false 81 Non-Utility Nuclear [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/businesssegmentinformationdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 16 USD true false false false Non-Utility Nuclear [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_NonUtilityNuclearMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 17 USD true false false false Non-Utility Nuclear [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_NonUtilityNuclearMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 18 USD true false false false Non-Utility Nuclear [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_NonUtilityNuclearMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 19 USD true false false false Non-Utility Nuclear [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_NonUtilityNuclearMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 82 Segment Financial Information 2 etr_SegmentFinancialInformationAbstract etr false na duration Segment Financial Information. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Segment Financial Information. false 83 Operating revenues 2 us-gaap_SegmentReportingInformationRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 618811000 618811000 false false false 2 false false false false 0 0 false false false 3 false true false false 684214000 684214000 false false false 4 false true false false 1813438000 1813438000 false false false 5 false true false false 1885330000 1885330000 false false false xbrli:monetaryItemType monetary Amount of total revenue for the reportable segment, including revenue from external customers, transactions with other operating segments of the same entity, and (gross) interest revenue. 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Must be disclosed if the amount (a) is included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27 -Subparagraph h false 87 Consolidated net income (loss) 2 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 133863000 133863000 false false false 2 false false false false 0 0 false false false 3 false true false false 200432000 200432000 false false false 4 false true false false 347589000 347589000 false false false 5 false true false false 461524000 461524000 false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 88 Total assets 2 us-gaap_SegmentReportingSegmentAssets us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 8256579000 8256579000 false false false 2 false false false false 0 0 false false false 3 false true false false 8584590000 8584590000 false false false 4 false true false false 8256579000 8256579000 false false false 5 false true false false 8584590000 8584590000 false false false xbrli:monetaryItemType monetary Total assets for reportable segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 32 -Subparagraph c false 97 All Other [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/businesssegmentinformationdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 20 USD true false false false All Other [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_AllOtherMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 21 USD true false false false All Other [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_AllOtherMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 22 USD true false false false All Other [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_AllOtherMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 23 USD true false false false All Other [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_AllOtherMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. No authoritative reference available. false 98 Segment Financial Information 2 etr_SegmentFinancialInformationAbstract etr false na duration Segment Financial Information. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false xbrli:stringItemType string Segment Financial Information. false 99 Operating revenues 2 us-gaap_SegmentReportingInformationRevenue us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 54087000 54087000 false false false 2 false false false false 0 0 false false false 3 false true false false 39568000 39568000 false false false 4 false true false false 145952000 145952000 false false false 5 false true false false 111899000 111899000 false false false xbrli:monetaryItemType monetary Amount of total revenue for the reportable segment, including revenue from external customers, transactions with other operating segments of the same entity, and (gross) interest revenue. 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Must be disclosed if the amount (a) is included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27 -Subparagraph h false 103 Consolidated net income (loss) 2 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 55290000 55290000 false false false 2 false false false false 0 0 false false false 3 false true false false -20996000 -20996000 false false false 4 false true false false 44236000 44236000 false false false 5 false true false false -40770000 -40770000 false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 104 Total assets 2 us-gaap_SegmentReportingSegmentAssets us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 2095923000 2095923000 false false false 2 false false false false 0 0 false false false 3 false true false false 988402000 988402000 false false false 4 false true false false 2095923000 2095923000 false false false 5 false true false false 988402000 988402000 false false false xbrli:monetaryItemType monetary Total assets for reportable segments. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 32 -Subparagraph c false 113 Eliminations [Member] 0 na true na na No definition available. false true false false false false false false false false false http://entergy.com/role/businesssegmentinformationdetails false 1 false false false false 0 0 false false false 2 false false false false 0 0 false false false 3 false false false false 0 0 false false false 4 false false false false 0 0 false false false 5 false false false false 0 0 false false false false 24 USD true false false false Eliminations [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_EliminationsMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 25 USD true false false false Eliminations [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_EliminationsMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 26 USD true false false false Eliminations [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_EliminationsMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ false 27 USD true false false false Eliminations [Member] us-gaap_SegmentReportingInformationBySegmentAxis xbrldi http://xbrl.org/2006/xbrldi etr_EliminationsMember us-gaap_SegmentReportingInformationBySegmentAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 $ na No definition available. 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Must be disclosed if the amount (a) is included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27 -Subparagraph b false 119 Consolidated net income (loss) 2 us-gaap_ProfitLoss us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -29193000 -29193000 false false false 2 false false false false 0 0 false false false 3 false true false false -18359000 -18359000 false false false 4 false true false false -65911000 -65911000 false false false 5 false true false false -55078000 -55078000 false false false xbrli:monetaryItemType monetary The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A1, A4, A5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 5 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 29 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(1) true 120 Total assets 2 us-gaap_SegmentReportingSegmentAssets us-gaap true debit instant No definition available. false false false false false false false false false false false verboselabel false 1 true true false false -2057759000 -2057759000 false false false 2 false false false false 0 0 false false false 3 true true false false -2435796000 -2435796000 false false false 4 true true false false -2057759000 -2057759000 false false false 5 true true false false -2435796000 -2435796000 false false false xbrli:monetaryItemType monetary Total assets for reportable segments. 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