XML 71 R30.htm IDEA: XBRL DOCUMENT v2.4.1.9
Rate And Regulatory Matters (Narrative) (Details) (USD $)
1 Months Ended
Sep. 30, 2014
Jan. 31, 2015
Apr. 30, 2015
Feb. 28, 2015
Mar. 31, 2015
Dec. 31, 2014
Commitments and Contingencies [Abstract]            
Deferred Fuel Cost         $ 127,742,000us-gaap_DeferredFuelCost $ 155,140,000us-gaap_DeferredFuelCost
Entergy Louisiana [Member]            
Commitments and Contingencies [Abstract]            
Estimated Customer Benefits Anticipated with Business Combination 128,000,000etr_EstimatedCustomerBenefitsAnticipatedwithBusinessCombination
/ dei_LegalEntityAxis
= etr_EntergyLouisianaMember
         
Proposed Guaranteed Savings Projected for Business Combination 97,000,000etr_ProposedGuaranteedSavingsProjectedforBusinessCombination
/ dei_LegalEntityAxis
= etr_EntergyLouisianaMember
         
Entergy Gulf States Louisiana [Member]            
Commitments and Contingencies [Abstract]            
Public Utilities Earned Return On Common Equity   7.20%etr_PublicUtilitiesEarnedReturnOnCommonEquity
/ dei_LegalEntityAxis
= etr_EntergyGulfStatesLouisianaMember
       
Rate Increase   706,000etr_RateIncrease
/ dei_LegalEntityAxis
= etr_EntergyGulfStatesLouisianaMember
       
Estimated Customer Benefits Anticipated with Business Combination 128,000,000etr_EstimatedCustomerBenefitsAnticipatedwithBusinessCombination
/ dei_LegalEntityAxis
= etr_EntergyGulfStatesLouisianaMember
         
Proposed Guaranteed Savings Projected for Business Combination 97,000,000etr_ProposedGuaranteedSavingsProjectedforBusinessCombination
/ dei_LegalEntityAxis
= etr_EntergyGulfStatesLouisianaMember
         
Entergy Gulf States Louisiana [Member] | Subsequent Event [Member]            
Commitments and Contingencies [Abstract]            
Net increase in revenues     688,000etr_Netincreaseinrevenues
/ dei_LegalEntityAxis
= etr_EntergyGulfStatesLouisianaMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Recommended adjustment to earned return on equity     7.24%etr_Recommendedadjustmenttoearnedreturnonequity
/ dei_LegalEntityAxis
= etr_EntergyGulfStatesLouisianaMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Entergy New Orleans [Member]            
Commitments and Contingencies [Abstract]            
Requested capacity to purchase on a life-of-unit basis from Union Power Station       20.00%etr_RequestedcapacitytopurchaseonalifeofunitbasisfromUnionPowerStation
/ dei_LegalEntityAxis
= etr_EntergyNewOrleansMember
   
Power blocks       2etr_Powerblocks
/ dei_LegalEntityAxis
= etr_EntergyNewOrleansMember
   
Entergy Texas [Member]            
Commitments and Contingencies [Abstract]            
Deferred Fuel Cost         0us-gaap_DeferredFuelCost
/ dei_LegalEntityAxis
= etr_EntergyTexasMember
11,861,000us-gaap_DeferredFuelCost
/ dei_LegalEntityAxis
= etr_EntergyTexasMember
Entergy Arkansas [Member]            
Commitments and Contingencies [Abstract]            
Deferred Fuel Cost         127,742,000us-gaap_DeferredFuelCost
/ dei_LegalEntityAxis
= etr_EntergyArkansasMember
143,279,000us-gaap_DeferredFuelCost
/ dei_LegalEntityAxis
= etr_EntergyArkansasMember
Entergy Arkansas [Member] | Subsequent Event [Member]            
Commitments and Contingencies [Abstract]            
Public Utilities Earned Return On Common Equity     10.20%etr_PublicUtilitiesEarnedReturnOnCommonEquity
/ dei_LegalEntityAxis
= etr_EntergyArkansasMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Net increase in revenues     167,000,000etr_Netincreaseinrevenues
/ dei_LegalEntityAxis
= etr_EntergyArkansasMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
     
Rate Increase     $ 268,400,000etr_RateIncrease
/ dei_LegalEntityAxis
= etr_EntergyArkansasMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember