Commitments And Contingencies (Narrative) (Details) (USD $)	12 Months Ended														12 Months Ended		12 Months Ended							12 Months Ended											3 Months Ended	12 Months Ended					1 Months Ended	12 Months Ended							1 Months Ended	12 Months Ended
	Dec. 31, 2013 program reactor	Dec. 31, 2013 Four Nuclear Locations [Member]	Dec. 31, 2013 Turbine And Generator Damage [Member]	Dec. 31, 2013 Other Than Turbine And Generator Damage [Member]	Dec. 31, 2013 Windstorm, Flood, Earthquake, Or Volcanic Eruption [Member]	Dec. 31, 2013 Operational Perils [Member]	Dec. 31, 2013 Natural Perils [Member]	Dec. 31, 2013 Other Natural Perils [Member]	Dec. 31, 2013 All Other Natural Perils [Member]	Dec. 31, 2013 Flooding Or Property Value Greater Than 20 Million [Member]	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]	Dec. 31, 2013 Waterford 3 [Member]	Dec. 31, 2013 Waterford 3 [Member] Accidental Outage Coverage Program [Member]	Dec. 31, 2013 Grand Gulf [Member] policy	Dec. 31, 2013 Grand Gulf [Member] Accidental Outage Coverage Program [Member]	Dec. 31, 2013 Indian Point 2 Indian Point 3 And Palisades [Member]	Dec. 31, 2013 Fitzpatrick And Pilgrim [Member]	Dec. 31, 2013 Vermont Yankee [Member]	Dec. 31, 2013 Utility Plants [Member]	Dec. 31, 2013 Utility Plants [Member] Primary Layer [Member]	Dec. 31, 2013 Utility Plants [Member] Excess Layer [Member]	Dec. 31, 2013 Utility Plants [Member] Blanket Layer [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] reactor	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Turbine And Generator Damage [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Other Than Turbine And Generator Damage [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Windstorm, Flood, Earthquake, Or Volcanic Eruption [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Primary Layer [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Excess Layer [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Blanket Layer [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Accidental Outage Coverage Program [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Indian Point [Member] Primary Layer [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Indian Point [Member] Excess Layer [Member]	Dec. 31, 2013 Entergy Wholesale Commodities [Member] Indian Point [Member] Blanket Layer [Member]	Jun. 30, 2013 Entergy Arkansas [Member]	Dec. 31, 2013 Entergy Arkansas [Member] reactor	Dec. 31, 2012 Entergy Arkansas [Member]	Dec. 31, 2011 Entergy Arkansas [Member]	Dec. 31, 2013 Entergy Arkansas [Member] Minimum [Member]	Dec. 31, 2013 Entergy Arkansas [Member] Maximum [Member]	Jan. 31, 2014 Entergy Arkansas [Member] Subsequent Event [Member]	Dec. 31, 2013 Entergy Gulf States Louisiana [Member] reactor plaintiff claim	Dec. 31, 2013 Entergy Mississippi [Member]	Dec. 31, 2012 Entergy Mississippi [Member]	Dec. 31, 2013 Entergy Mississippi [Member] Minimum [Member]	Dec. 31, 2013 Entergy Mississippi [Member] Maximum [Member]	Dec. 31, 2013 Entergy Texas [Member] plaintiff claim	Dec. 31, 2013 System Energy [Member] reactor	Dec. 31, 1988 System Energy [Member] Grand Gulf [Member] transaction	Dec. 31, 2013 System Energy [Member] Grand Gulf [Member]	Dec. 31, 2013 Entergy New Orleans [Member] plaintiff claim	Dec. 31, 2012 Entergy New Orleans [Member]	Dec. 31, 2013 Entergy New Orleans [Member] Operational Perils [Member]	Dec. 31, 2013 Entergy New Orleans [Member] Natural Perils [Member]	Dec. 31, 2013 Entergy New Orleans [Member] Minimum [Member]	Dec. 31, 2013 Entergy New Orleans [Member] Maximum [Member]	Dec. 31, 2013 Entergy Louisiana [Member] plaintiff reactor claim	Dec. 31, 2012 Entergy Louisiana [Member]	Dec. 31, 2011 Entergy Louisiana [Member]	Dec. 31, 2013 Entergy Louisiana [Member] Minimum [Member]	Dec. 31, 2013 Entergy Louisiana [Member] Maximum [Member]
Commitments And Contingencies [Line Items]
Payments made under purchased power agreement																																																									$ 181,100,000	$ 125,000,000	$ 185,600,000
Required energy for the production of Vidalia project in percentage																																																									94.00%
Estimated Payments Under Purchased Power Agreement in Next Twelve Months																																																									147,500,000
Estimated Payments Under Purchased Power Agreement in Year Two and Thereafter																																																									2,190,000,000
Credit rates agreed by subsidiary for each year under settlement related to tax benefits from tax treatment of purchased power agreement																																																									11,000,000
Number of years for which credit rates agreed by subsidiary under settlement related to tax benefits from the tax treatment of purchased power agreement																																																									10 years
Resulted credit rate with interest by IRS settlement																																																									11,300,000
Amount of remaining benefits of tax credit by crediting rate payers																																																									20,235,000
Maximum period up to which remaining benefit of tax accounting election shared																																																									15 years
Regulatory charges																																																									199,000,000
Estimated cost to restore ANO to service																																				94,000,000
Course of construction sublimit																																				50,000,000
Insurance receivable																																			50,000,000
Capital expense																																				35,000,000
Operation and maintenance expense incurred for ANO recovery																																				13,000,000
Incremental deferred refueling outage costs for ANO recovery																																				2,000,000
Capital expense in excess of insurance receivable																																				34,000,000
Operation and maintenance expense in excess of insurance receivable																																				9,000,000
Incremental deferred refueling outage costs in excess of insurance receivable																																				1,000,000
Proceeds from insurance																																				9,000,000	0	0			20,000,000
Estimated cost to restore Baxter Wilson to service																																													45,000,000	60,000,000
Property insurance deductible																																											20,000,000
Number of financial protection programs	2
Insurance coverage for public liability by American Nuclear Insurers	375,000,000
Maximum retrospective insurance premium obligation per reactor per incident	127,300,000
Maximum total contingent obligation per incident	1,400,000,000
Maximum retrospective insurance premium obligation excluding surcharge per reactor per incident	121,300,000
Surcharge on maximum retrospective premium	5.00%
Rate of maximum retrospective premium per year per nuclear power reactor	19,000,000
ANI combined with Secondary Financial Protection Coverage	13,600,000,000
Additional damage coverage for a terrorist event	100,000,000,000
Number of nuclear reactor included in the Secondary Financial Protection program	104
Total premium for reactor under secondary financial protection program	13,200,000,000
Number of nuclear power reactors																								6												2						1						1									1
Ownership percentage by a non-affiliated company in Variable interest entity	10.00%
Property Insurance insured amount per occurrence														327,600,000		327,600,000				1,600,000,000	500,000,000	750,000,000	350,000,000					500,000,000	615,000,000	1,115,000,000	327,600,000	500,000,000	1,100,000,000	1,600,000,000
Property insurance deductibles per occurrence			2,500,000	2,500,000	10,000,000																				2,500,000	2,500,000	10,000,000
Additional deductible percentage					10.00%																						10.00%
Weekly indemnity													2,950,000		400,000,000		4,500,000	4,000,000	3,500,000
Maximum indemnity													413,000,000		56,000,000		490,000,000	490,000,000	435,000,000
Number of insurance policies															4
Waiting period													182 days		182 days		84 days	84 days	84 days
Property insurance minimum requirement per site for nuclear power plant licensees	1,060,000,000
Maximum recovery nuclear insurance policies for property damage caused by Terrorist Act	3,240,000,000
Maximum conventional property insurance coverage on an each and every loss basis						400,000,000	400,000,000	125,000,000	400,000,000																																										50,000,000
Self-insured retention per occurrence																																																					20,000,000	40,000,000
Minimum value of power plants, substations to be covered under conventional property insurance	5,000,000
Purchase of terrorism insurance coverage	300,000,000
Amount of additional insurance coverage per occurrence	20,000,000
Deductible after additional coverage purchased		2,500,000.0								500,000	100,000	250,000
Value of properties that do not qualify for low deductible	20,000,000
Number of asbestos lawsuits																																										400					400				400						400
Number of claimants in asbestos lawsuits																																										5,000					5,000				5,000						5,000
Percentage of capacity and energy agreed to sell by system energy from grand gulf																																				36.00%							33.00%								17.00%						14.00%
Average monthly payments under unit power sales agreement																																					22,300,000							19,200,000								10,800,000						8,700,000
Purchased percentage of capacity and energy based on agreement																																				17.10%							31.30%								24.70%						26.90%
Amortization period of cost																																							2 years	27 years					2 years	27 years									2 years	27 years				2 years	27 years
Allocated amortization cost in percentage																																											43.97%								29.80%						26.23%
Number of sale leaseback transactions																																																	2
Sold and leased back undivided ownership interests in Grand Gulf																																																		$ 500,000,000
Ratio of debt to total liabilities and equity to be maintained under Reimbursement Agreement																																																70.00%
Ratio of adjusted net income to interest expense to be maintained under Reimbursement Agreement.																																																1.50