Acquisitions And Dispositions (Details) (USD $)	12 Months Ended								1 Months Ended					12 Months Ended				1 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 India Point Three [Member]	Dec. 31, 2013 FitzPatrick [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member]	Dec. 31, 2012 Entergy Wholesale Commodities [Member]	Dec. 31, 2011 Entergy Wholesale Commodities [Member]	Nov. 30, 2013 Entergy Solutions District Energy [Member]	Nov. 30, 2012 Hot Spring Energy Facility [Member] Entergy Arkansas [Member] MW	Nov. 30, 2012 Hinds Energy Facility [Member] Entergy Mississippi [Member] MW	Nov. 30, 2011 Hinds Energy Facility [Member] Entergy Mississippi [Member]	Apr. 30, 2011 Acadia Energy Center [Member] Entergy Louisiana [Member] power_plant_unit	Dec. 31, 2013 Acadia Energy Center [Member] Entergy Louisiana [Member] MW	Apr. 30, 2011 Acadia Unit 2 [Member] Entergy Louisiana [Member]	Apr. 30, 2011 Acadia Common Assets [Member] Cleco Power [Member]	Apr. 30, 2011 Acadia Common Assets [Member] Entergy Louisiana [Member]	Dec. 31, 2011 Rhode Island State Energy Center [member] Entergy Wholesale Commodities [Member] MW	Dec. 31, 2013 Palisades [Member] Entergy Wholesale Commodities [Member]	Dec. 31, 2012 Palisades [Member] Entergy Wholesale Commodities [Member]	Dec. 31, 2011 Palisades [Member] Entergy Wholesale Commodities [Member]	Dec. 31, 2007 Palisades [Member] Entergy Wholesale Commodities [Member]	Dec. 31, 2022 Scenario, Forecast [Member] Palisades [Member] Entergy Wholesale Commodities [Member]
Business Acquisition [Line Items]
Capacity of power plant unit										620	450			580				583
Number of power plant units													2
Amount paid for ownership in facility common assets										$ 253,000,000		$ 206,000,000	$ 300,000,000					$ 346,000,000
Percent of acquisition															10000.00%	50.00%	50.00%
Time period of PPA																						15 years
Percentage of plants output covered by PPA																						100.00%
Price under PPA, lower range																						43.50
Price under PPA, upper range																							61.50
Average price under PPA																						51
Amounts amortized to revenue																			18,000,000	17,000,000	43,000,000
Amounts to be amortized to revenue in 2014																			16,000,000
Amounts to be amortized to revenue in 2015																			15,000,000
Amounts to be amortized to revenue in 2016																			13,000,000
Amounts to be amortized to revenue in 2017																			12,000,000
Amounts to be amortized to revenue in 2018																			8,000,000
Future payment to NYPA for power sold				6.59	3.91
Annual cap for future payment to NYPA for power sold				48,000,000	24,000,000
Contingent consideration recorded as plant						72,000,000	72,000,000	72,000,000
Proceeds from sale of business									140,000,000
Gain on sale of business	$ 43,569,000	$ 0	$ 0						$ 44,000,000