2.2.0.25truefalse0701 - Schedule - Valuation And Qualifying Accounts (Details)truefalseIn Thousandsfalse1falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions deducted from assets allowance for doubtful accounts [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Allowance_For_Doubtful_Accounts_Memberhttp://www.sec.gov/CIK0000065984duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAccumulated Provisions deducted from assets allowance for doubtful accounts [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AllowanceForDoubtfulAccountsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions deducted from assets allowance for doubtful accounts [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Allowance_For_Doubtful_Accounts_Memberhttp://www.sec.gov/CIK0000065984duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseAccumulated Provisions deducted from assets allowance for doubtful accounts [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AllowanceForDoubtfulAccountsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions deducted from assets allowance for doubtful accounts [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Allowance_For_Doubtful_Accounts_Memberhttp://www.sec.gov/CIK0000065984duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseAccumulated Provisions deducted from assets allowance for doubtful accounts [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AllowanceForDoubtfulAccountsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$1false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://entergy.com/role/valuationandqualifyingaccountsdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse1falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions deducted from assets allowance for doubtful accounts [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Allowance_For_Doubtful_Accounts_Memberhttp://www.sec.gov/CIK0000065984duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAccumulated Provisions deducted from assets allowance for doubtful accounts [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AllowanceForDoubtfulAccountsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$2falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions deducted from assets allowance for doubtful accounts [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Allowance_For_Doubtful_Accounts_Memberhttp://www.sec.gov/CIK0000065984duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseAccumulated Provisions deducted from assets allowance for doubtful accounts [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AllowanceForDoubtfulAccountsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$3falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions deducted from assets allowance for doubtful accounts [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Allowance_For_Doubtful_Accounts_Memberhttp://www.sec.gov/CIK0000065984duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseAccumulated Provisions deducted from assets allowance for doubtful accounts [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldius-gaap_AllowanceForDoubtfulAccountsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseAccumulated Provisions deducted from assets allowance for doubtful accounts [Member]2true0us-gaap_MovementInValuationAllowancesAndReservesRollForwardus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringA roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.falsefalseValuation And Qualifying Accounts3false0us-gaap_ValuationAllowancesAndReservesBalanceus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse2763100027631falsetruefalsefalsefalse2truefalsefalse2561000025610falsetruefalsefalsefalse3truefalsefalse2578900025789falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costsReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 falsefalseBeginning Balance4false0etr_ValuationAllowancesAndReservesChargedToCostAndExpenseAndOtherAccountsetrfalsedebitdurationValuation Allowances And Reserves Charged To Cost And Expense and other accounts.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse15690001569falsefalsefalsefalsefalse2truefalsefalse20210002021falsefalsefalsefalsefalse3truefalsefalse-179000-179falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryValuation Allowances And Reserves Charged To Cost And Expense and other accounts.No authoritative reference available.falsefalseAdditions Charged to Income or Regulatory Assets5false0us-gaap_ValuationAllowancesAndReservesDeductionsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse-2577000-2577falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 falsefalseOther Changes Deductions from Provisions6false0us-gaap_ValuationAllowancesAndReservesBalanceus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse3177700031777falsefalsefalsefalsefalse2truefalsefalse2763100027631falsefalsefalsefalsefalse3truefalsefalse2561000025610falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costsReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 falsefalseEnding Balance7false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://entergy.com/role/valuationandqualifyingaccountsdetails1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions not deducted from assets [Member] 1/1/2010 - 12/31/2010 USD ($) $TwelveMonthsEnded_31Dec2010_Accumulated_Provisions_Not_Deducted_From_Assets_Memberhttp://www.sec.gov/CIK0000065984duration2010-01-01T00:00:002010-12-31T00:00:00falsefalseAccumulated Provisions not deducted from assets [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldietr_AccumulatedProvisionsNotDeductedFromAssetsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$5falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions not deducted from assets [Member] 1/1/2009 - 12/31/2009 USD ($) $TwelveMonthsEnded_31Dec2009_Accumulated_Provisions_Not_Deducted_From_Assets_Memberhttp://www.sec.gov/CIK0000065984duration2009-01-01T00:00:002009-12-31T00:00:00falsefalseAccumulated Provisions not deducted from assets [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldietr_AccumulatedProvisionsNotDeductedFromAssetsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$6falsefalseUSDtruefalse{us-gaap_ValuationAllowancesAndReservesTypeAxis} : Accumulated Provisions not deducted from assets [Member] 1/1/2008 - 12/31/2008 USD ($) $TwelveMonthsEnded_31Dec2008_Accumulated_Provisions_Not_Deducted_From_Assets_Memberhttp://www.sec.gov/CIK0000065984duration2008-01-01T00:00:002008-12-31T00:00:00falsefalseAccumulated Provisions not deducted from assets [Member]us-gaap_ValuationAllowancesAndReservesTypeAxisxbrldihttp://xbrl.org/2006/xbrldietr_AccumulatedProvisionsNotDeductedFromAssetsMemberus-gaap_ValuationAllowancesAndReservesTypeAxisexplicitMemberUSDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170USDUSD$OthernaNo definition available.No authoritative reference available.falsefalseAccumulated Provisions not deducted from assets [Member]8true0us-gaap_MovementInValuationAllowancesAndReservesRollForwardus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringA roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.falsefalseValuation And Qualifying Accounts9false0us-gaap_ValuationAllowancesAndReservesBalanceus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsetruefalsefalseperiodstartlabel1truefalsefalse141315000141315falsefalsefalsefalsefalse2truefalsefalse147452000147452falsefalsefalsefalsefalse3truefalsefalse133406000133406falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costsReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 falsefalseBeginning Balance10false0etr_ValuationAllowancesAndReservesChargedToCostAndExpenseAndOtherAccountsetrfalsedebitdurationValuation Allowances And Reserves Charged To Cost And Expense and other accounts.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse333371000333371falsefalsefalsefalsefalse2truefalsefalse5205000052050falsefalsefalsefalsefalse3truefalsefalse5682600056826falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryValuation Allowances And Reserves Charged To Cost And Expense and other accounts.No authoritative reference available.falsefalseAdditions Charged to Income or Regulatory Assets11false0us-gaap_ValuationAllowancesAndReservesDeductionsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse7943600079436falsefalsefalsefalsefalse2truefalsefalse5818700058187falsefalsefalsefalsefalse3truefalsefalse4278000042780falsefalsefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 falsefalseOther Changes Deductions from Provisions12false0us-gaap_ValuationAllowancesAndReservesBalanceus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsetruefalseperiodendlabel1truefalsefalse395250000395250falsetruefalsefalsefalse2truefalsefalse141315000141315falsetruefalsefalsefalse3truefalsefalse147452000147452falsetruefalsefalsefalseMonetaryxbrli:monetaryItemTypemonetaryTotal of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costsReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 falsefalseEnding Balance312Valuation And Qualifying Accounts (Details) (USD $)ThousandsUnKnownUnKnownUnKnownfalsetrue