Rate And Regulatory Matters (Narrative) (Details) (USD $)	20 Months Ended			1 Months Ended							9 Months Ended		1 Months Ended		3 Months Ended		9 Months Ended				1 Months Ended						9 Months Ended		1 Months Ended					3 Months Ended		1 Months Ended				1 Months Ended	12 Months Ended
	May 02, 2003	Sep. 30, 2014	Dec. 31, 2013	Aug. 31, 2014 Entergy Louisiana [Member]	Jul. 31, 2014 Entergy Louisiana [Member]	Jun. 30, 2014 Entergy Louisiana [Member]	May 31, 2014 Entergy Louisiana [Member]	Jan. 31, 2014 Entergy Louisiana [Member]	Mar. 31, 2013 Entergy Louisiana [Member]	Jan. 31, 2013 Entergy Louisiana [Member]	Sep. 30, 2014 Entergy Louisiana [Member]	Oct. 31, 2014 Entergy Louisiana [Member] Subsequent Event [Member]	Jun. 30, 2014 Entergy Mississippi [Member]	May 31, 2014 Entergy Mississippi [Member]	Sep. 30, 2014 Entergy Mississippi [Member]	Sep. 30, 2013 Entergy Mississippi [Member]	Sep. 30, 2014 Entergy Mississippi [Member]	Sep. 30, 2013 Entergy Mississippi [Member]	Mar. 31, 2014 Entergy Mississippi [Member]	Dec. 31, 2013 Entergy Mississippi [Member]	Oct. 31, 2014 Entergy Mississippi [Member] Subsequent Event [Member]	Aug. 31, 2014 Entergy Gulf States Louisiana [Member]	Jun. 30, 2014 Entergy Gulf States Louisiana [Member]	May 31, 2014 Entergy Gulf States Louisiana [Member]	Apr. 30, 2014 Entergy Gulf States Louisiana [Member]	Jan. 31, 2013 Entergy Gulf States Louisiana [Member]	Sep. 30, 2014 Entergy Gulf States Louisiana [Member]	Dec. 31, 2013 Entergy Gulf States Louisiana [Member]	Aug. 31, 2012 Entergy New Orleans [Member]	Sep. 30, 2014 Entergy Texas [Member]	Apr. 30, 2014 Entergy Texas [Member]	Jan. 31, 2014 Entergy Texas [Member]	Sep. 30, 2013 Entergy Texas [Member]	Mar. 31, 2014 Entergy Texas [Member]	Dec. 31, 2013 Entergy Texas [Member]	Aug. 31, 2014 Entergy Arkansas [Member]	May 31, 2014 Entergy Arkansas [Member]	Dec. 31, 2013 Entergy Arkansas [Member]	Sep. 30, 2014 Entergy Arkansas [Member]	Aug. 31, 2014 Entergy Holdings Company LLC [Member]	Sep. 30, 2013 Natural Gas Processing Plant [Member] Entergy Gulf States Louisiana [Member]
Commitments and Contingencies [Abstract]
Public Utilities Earned Return On Common Equity						9.95%		8.13%	10.40%				10.59%																		9.80%	9.20%	10.40%								5.47%
Requested increase in retail revenues per request for annual distribution cost recovery factor rider																														$ 7,000,000
Liquidation Value											100,000,000																10,000,000
Estimated value of net assets that support Algiers customers to be transferred												60,000,000
Public Utilities, Approved Return on Equity, Percentage																					10.07%															9.50%		9.30%
Net increase in revenues																					16,000,000
Rate Increase						9,300,000	10,000,000	5,560,000	13,000,000																1,500,000						18,500,000		38,600,000	18,500,000							1,500,000
Rate Increase Through MISO Recovery Rider						853,000
Public Utilities, Requested Rate Increase (Decrease), Amount													49,000,000
Requested Rate Increase Including New Depreciation Rates													30,000,000
Rate Increase Period								3 years	3 years
Rate Case Filing Request To Reconcile Fuel and Purchased Power Costs and Fuel Revenues																																	900,000,000
Rate Case Filing Request Special Circumstances Fuel Cost Recovery Of Purchased Power Costs																																	22,000,000
Storm restoration costs incurred - Hurricane Isaac											247,700,000																73,800,000		47,300,000
Rate reduction																																300,000
Period of prohibited refunds	20 months
Storm reserve withdrawal										187,000,000																65,000,000			17,400,000
Storm restoration costs deemed prudently incurred - Hurricane Isaac											224,300,000																66,500,000
Requested Replenishment of Storm Escrow Accounts Hurricane Issac						200,000,000																	90,000,000
Minimum customer benefits						23,900,000																	6,900,000
Annual customer credits						4,800,000																	1,400,000
LCDA issuance of bonds under Louisiana Act 55 financing				243,850,000.00																		71,000,000
Bond proceeds loaned by LCDA to LURC under Louisiana Act 55 financing				240,000,000																		69,000,000
Amount transfered to restricted escrow account as storm damage reserve				13,000,000																		3,000,000
Bond proceeds transfered to company under Louisiana Act 55 financing				227,000,000																		66,000,000
Bond proceeds used to acquire preferred units				227,000,000																		66,000,000
Class preferred non voting membership interest units acquired in wholly owned Subsidiary				2,272,725.89																		662,426.80
Annual distribution rate				7.50%																		7.50%
Liquidation price per unit				100																		100
Net worth required under terms of membership interest																																								1,750,000,000
Redetermination Of Production Cost Allocation Rider Unrecovered Retail Balance																																					3,000,000
System Agreement Bandwidth Remedy Payments																																					68,000,000
Deferred Fuel Cost		205,553,000	116,379,000												40,473,000		40,473,000		60,400,000	38,057,000							0	9,625,000		6,714,000					0			68,696,000	158,367,000
Natural Gas Cost														4.50
Rate increase value to reflect special formula rate plan rate implementation adjustment							39,000,000																	3,800,000
Recommended potential project and replacement power cost disallowances					71,000,000
Intervenor recommended disallowance of incremental project costs					141,000,000
Write-Off Of Regulatory Asset For New Nuclear															$ 60,857,000	$ 0	$ 60,857,000	$ 0