XML 103 R60.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Risk Management and Fair Values (Schedules Of Valuation Techniques) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Mar. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2013 | Dec. 31, 2012
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Value | $ 56.0 | $ 83.0 | $ 56.0 | $ 83.0 | $ (61.0) | $ (98.0) | $ 52.0 | $ 178.0
Effect of Significant Unobservable Inputs on Fair Value of Electricity Swaps | (2) |  | (2) |  |  |  |  |
Issuance of Fixed Transmission Rights | 121.0 | 0 | 121.0 | 0 |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Purchases Sales Issuances Settlements | 101.0 | 4.0 | (94.0) | 2.0 |  |  |  |
Entergy Arkansas [Member] |  |  |  |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Value | 3.0 |  | 3.0 |  | 2.7 | 0 |  |
Issuance of Fixed Transmission Rights | 4.2 |  | 4.2 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 2.8 |  | 10.6 |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Purchases Sales Issuances Settlements | (6.7) |  | (11.8) |  |  |  |  |
Entergy Gulf States [Member] |  |  |  |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Value | 47.2 |  | 47.2 |  | 5.4 | 6.7 |  |
Issuance of Fixed Transmission Rights | 37.3 |  | 37.3 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 30.6 |  | 38.3 |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Purchases Sales Issuances Settlements | (26.1) |  | (35.1) |  |  |  |  |
Entergy Louisiana [Member] |  |  |  |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Value | 23.6 |  | 23.6 |  | 3.0 | 5.7 |  |
Issuance of Fixed Transmission Rights | 21.5 |  | 21.5 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 11.5 |  | 16.8 |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Purchases Sales Issuances Settlements | (12.4) |  | (20.4) |  |  |  |  |
Entergy Mississippi [Member] |  |  |  |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Value | 12.7 |  | 12.7 |  | 4.8 | 1.0 |  |
Issuance of Fixed Transmission Rights | 15.2 |  | 15.2 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | (2.8) |  | 8.8 |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Purchases Sales Issuances Settlements | (4.5) |  | (12.3) |  |  |  |  |
Entergy New Orleans [Member] |  |  |  |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Value | 8.5 |  | 8.5 |  | 1.0 | 2.0 |  |
Issuance of Fixed Transmission Rights | 8.3 |  | 8.3 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 2.5 |  | 4.5 |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Purchases Sales Issuances Settlements | (3.3) |  | (6.3) |  |  |  |  |
Entergy Texas [Member] |  |  |  |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Value | 47.8 |  | 47.8 |  | 7.4 | 18.4 |  |
Issuance of Fixed Transmission Rights | 33.2 |  | 33.2 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 40.6 |  | 42.4 |  |  |  |  |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset And Liabilities Purchases Sales Issuances Settlements | (33.4) |  | (46.2) |  |  |  |  |
Parent Company [Member] |  |  |  |  |  |  |  |
Range From Average Percentage for Electricity Options | 101.00% |  | 101.00% |  |  |  |  |
Range from Average Percentage for Fair Value of Electricity Swaps | 3.00% |  | 3.00% |  |  |  |  |
Effect of Significant Unobservable Inputs on Fair Value of Electricity Options | 28 |  | 28 |  |  |  |  |
Fair Value of Electricity Options | (17) |  | (17) |  |  |  |  |
Fair Value of Electricity Swaps | $ (71) |  | $ (71) |  |  |  |  |

X
- Definition The effect of significant unobservable inputs on the fair value of electricity options. + References No definition available. + Details
Name: | etr_EffectOfSignificantUnobservableInputsOnFairValueOfElectricityOptions
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The effect of significant unobservable inputs on the fair value of electricity swaps. + References No definition available. + Details
Name: | etr_EffectOfSignificantUnobservableInputsOnFairValueOfElectricitySwaps
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents purchases, sales, issuances, and settlements (net) which have taken place during the period in relation to assets and liabilities measured at fair value on a recurring basis using unobservable inputs (Level 3). + References No definition available. + Details
Name: | etr_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesPurchasesSalesIssuancesSettlements
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This element represents an asset and liabilities measured at fair value using significant unobservable inputs (Level 3) which is required for reconciliation purposes of beginning and ending balances. + References No definition available. + Details
Name: | etr_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesValue
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value of electricity options classified as Level 3 in the fair value hierarchy. + References No definition available. + Details
Name: | etr_FairValueOfElectricityOptions
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The fair value of electricity swaps classified as Level 3 in the fair value hierarchy + References No definition available. + Details
Name: | etr_FairValueOfElectricitySwaps
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Issuance of Fixed Transmission Rights + References No definition available. + Details
Name: | etr_IssuanceofFixedTransmissionRights
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The range from the average percentage used when calculating the fair value of electricity options classified as Level 3 in the fair value hierarchy + References No definition available. + Details
Name: | etr_RangeFromAveragePercentageForElectricityOptions
Namespace Prefix: | etr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The range from the average percentage used when calculating the fair value of electricity swaps classified as Level 3 in the fair value hierarchy + References No definition available. + Details
Name: | etr_RangeFromAveragePercentageForFairValueOfElectricitySwaps
Namespace Prefix: | etr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration