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Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Acquisitions And Dispositions (Details) (USD $)	12 Months Ended			1 Months Ended		12 Months Ended
Acquisitions And Dispositions (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Nov. 30, 2013	Nov. 30, 2012 MW	Dec. 31, 2007	Dec. 31, 2022
Business Acquisition [Line Items]
Gain on sale of business	$ 0us-gaap_GainLossOnSaleOfBusiness	$ 43,569,000us-gaap_GainLossOnSaleOfBusiness	$ 0us-gaap_GainLossOnSaleOfBusiness
India Point Three [Member]
Business Acquisition [Line Items]
Future payment to NYPA for power sold	6.59
Annual cap for future payment to NYPA for power sold	48,000,000
FitzPatrick [Member]
Business Acquisition [Line Items]
Future payment to NYPA for power sold	3.91
Annual cap for future payment to NYPA for power sold	24,000,000
Entergy Wholesale Commodities [Member]
Business Acquisition [Line Items]
Contingent consideration recorded as plant	72,000,000	72,000,000	72,000,000
Entergy Solutions District Energy [Member]
Business Acquisition [Line Items]
Proceeds from sale of business				140,000,000
Gain on sale of business				44,000,000
Hot Spring Energy Facility [Member] \| Entergy Arkansas [Member]
Business Acquisition [Line Items]
Capacity of power plant unit					620
Amount paid for ownership in facility common assets					253,000,000
Hinds Energy Facility [Member] \| Entergy Mississippi [Member]
Business Acquisition [Line Items]
Capacity of power plant unit					450
Amount paid for ownership in facility common assets					206,000,000
Palisades [Member] \| Entergy Wholesale Commodities [Member]
Business Acquisition [Line Items]
Time period of PPA						15 years
Percentage of plants output covered by PPA						100.00%
Price under PPA, lower range						43.50
Average price under PPA						51
Amounts amortized to revenue	16,000,000	18,000,000	17,000,000
Amounts to be amortized to revenue in year one	15,000,000
Amounts to be amortized to revenue in year two	13,000,000
Amounts to be amortized to revenue in year three	12,000,000
Amounts to be amortized to revenue in year four	8,000,000
Amounts to be amortized to revenue in year five	$ 13,000,000
Scenario, Forecast [Member] \| Palisades [Member] \| Entergy Wholesale Commodities [Member]
Business Acquisition [Line Items]
Price under PPA, upper range							61.50