Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Common Stock [Member]	Treasury Stock, Common [Member]	Subsidiaries Preferred Stock and Noncontrolling Interests [Member]	Entergy Texas [Member]	Entergy Texas [Member] Additional Paid-in Capital [Member]	Entergy Texas [Member] Retained Earnings [Member]	Entergy Texas [Member] Common Stock [Member]	Entergy Texas [Member] Preferred Stock [Member]	Entergy Mississippi [Member]	Entergy Mississippi [Member] Noncontrolling Interest [Member]	Entergy Mississippi [Member] Member Units	Entergy Arkansas [Member]	Entergy Arkansas [Member] Noncontrolling Interest [Member]	Entergy Arkansas [Member] Member Units	Entergy Louisiana [Member]	Entergy Louisiana [Member] Restoration Law Trust II [Member] Entergy Finance Company [Member]	Entergy Louisiana [Member] AOCI Attributable to Parent [Member]	Entergy Louisiana [Member] Noncontrolling Interest [Member]	Entergy Louisiana [Member] Member Units	Entergy New Orleans [Member]	System Energy [Member]	System Energy [Member] Retained Earnings [Member]	System Energy [Member] Common Stock [Member]	Entergy Corporation [Member]
Equity, Including Portion Attributable to Noncontrolling Interest	$ 14,743,106	$ 7,792,601	$ 11,940,384	$ (162,460)	$ 5,620	$ (4,953,498)	$ 120,459	$ 3,118,662	$ 1,200,125	$ 1,830,335	$ 49,452	$ 38,750	$ 2,208,214	$ 18,753	$ 2,189,461	$ 3,760,670	$ 21,599	$ 3,739,071	$ 11,573,519		$ 54,798	$ 45,107	$ 11,473,614		$ 888,539	$ (28,311)	$ 916,850
Members' Equity																								$ 806,754
Dividends, Preferred Stock, Cash	4,580						4,580	518		518																		$ 4,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	76,536		75,281				1,255	36,744		36,744			27,432	(2,302)	29,734	(32,280)	(1,818)	(30,462)	182,723			795	181,928	(48,980)	31,118	31,118
Capital Contribution from Parent																275,000		275,000							150,000		150,000
Common equity distributions																			97,500				97,500
Dividends, Common Stock, Cash	(240,959)		(240,959)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1,108)						(1,108)									(250)	(250)		(858)			(858)
Other Comprehensive Income (Loss), Net of Tax	(3,668)			(3,668)															(2,024)		(2,024)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(5,039)	25,842				(30,881)
Stockholders' Equity, Other																			(43)				(43)
Noncash Capital Contribution from Parent																			976				976
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 128,268							126,966					106,997			63,079			313,837					(27,847)	55,966
Common Stock, Dividends, Per Share, Declared	$ 1.13
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (9,159)							(1,036)
Net Income (Loss) Attributable to Noncontrolling Interest													(4,035)			(2,643)			1,583
Other Comprehensive Income (Loss), Net of Tax	242,821																		(4,047)
Proceeds from Contributions from Parent													0			695,000									150,000
Equity, Including Portion Attributable to Noncontrolling Interest	14,574,366	7,766,759	11,774,706	(166,128)	5,620	(4,922,617)	116,026	3,154,888	1,200,125	1,866,561	49,452	38,750	2,235,646	16,451	2,219,195	4,003,140	19,531	3,983,609	11,656,793		52,774	45,044	11,558,975		1,069,657	2,807	1,066,850
Members' Equity																								757,774
Dividends, Preferred Stock, Cash	4,580						4,580	518	0	518	0	0																4,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	51,732		48,922				2,810	90,222	0	90,222	0	0	79,565	(1,733)	81,298	95,359	(825)	96,184	131,114			788	130,326	21,133	24,848	24,848
Capital Contribution from Parent																420,000		420,000
Common equity distributions													22,300		22,300				566,600				566,600
Dividends, Common Stock, Cash	(241,296)		(241,296)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (330)						(330)									(31)	(31)		(299)			(299)
Common Stock, Dividends, Per Share, Declared	$ 0.57
Net Income (Loss) Attributable to Noncontrolling Interest													(1,733)			(825)			788
Other Comprehensive Income (Loss), Net of Tax	$ 246,489			246,489															(2,023)		(2,023)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(55,274)	(16,352)				(38,922)
Stockholders' Equity, Other																			(40)				(40)
Equity, Including Portion Attributable to Noncontrolling Interest	14,681,655	7,783,111	11,582,332	80,361	5,620	(4,883,695)	113,926	3,244,592	1,200,125	1,956,265	49,452	38,750	2,292,911	14,718	2,278,193	4,518,468	18,675	4,499,793	11,218,945		50,751	45,533	11,122,661		1,094,505	27,655	1,066,850
Members' Equity																								778,907
Equity, Including Portion Attributable to Noncontrolling Interest	15,184,984	7,833,525	12,014,315	42,769	5,620	(4,812,321)	101,076	3,341,212	1,200,125	2,052,885	49,452	38,750	2,408,988	8,202	2,400,786	4,464,005	15,168	4,448,837	11,599,394		53,658	42,706	11,503,030	697,601	972,039	13,095	958,944
Redeemable Noncontrolling Interest, Equity, Preferred, Fair Value																				$ 1,400,000
Members' Equity													2,400,786			4,448,837			11,503,030					697,601
Dividends, Preferred Stock, Cash	4,580						4,580	518		518																		4,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	362,422		360,760				1,662	66,856		66,856			46,866	(2,479)	49,345	86,523	(1,191)	87,714	254,197			752	253,445	12,099	23,389	23,389
Capital Contribution from Parent													62,500		62,500
Dividends, Common Stock																									35,000	15,000	20,000
Common equity distributions																			36,250				36,250
Dividends, Common Stock, Cash	(258,249)		(258,249)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1,069)						(1,069)									(181)	(181)		(888)			(888)
Other Comprehensive Income (Loss), Net of Tax	(3,729)			(3,729)															(971)		(971)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(2,621)	40,777				(43,398)
Stockholders' Equity, Other																			(12)				(12)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 834,376							148,352					131,138			185,716			554,377					30,141	44,714
Common Stock, Dividends, Per Share, Declared	$ 1.20
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (9,159)							(1,036)
Net Income (Loss) Attributable to Noncontrolling Interest													(2,891)			(2,080)			1,497
Other Comprehensive Income (Loss), Net of Tax	(8,331)																		(3,103)
Proceeds from Contributions from Parent													62,500			0									0
Equity, Including Portion Attributable to Noncontrolling Interest	15,282,400	7,792,748	12,116,826	39,040	5,620	(4,768,923)	97,089	3,407,550	1,200,125	2,119,223	49,452	38,750	2,518,354	5,723	2,512,631	4,550,347	13,796	4,536,551	11,815,470		52,687	42,570	11,720,213		960,428	21,484	938,944
Members' Equity																								709,700
Dividends, Preferred Stock, Cash	4,580						4,580	518		518																		$ 4,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	471,954		467,930				4,024	81,496		81,496			84,272	(412)	84,684	99,193	(889)	100,082	300,180			745	299,435	18,042	21,325	21,325
Dividends, Common Stock																									40,000	10,000	30,000
Common equity distributions																			458,750				458,750
Dividends, Common Stock, Cash	(258,467)		(258,467)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (593)						(593)									(275)	(275)		(319)			(319)
Common Stock, Dividends, Per Share, Declared	$ 0.60
Net Income (Loss) Attributable to Noncontrolling Interest													(412)			(889)			745
Other Comprehensive Income (Loss), Net of Tax	$ (4,602)			(4,602)															(2,132)		(2,132)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(18,197)	(15,489)				(2,708)
Stockholders' Equity, Other																			(12)				(12)
Stock Issued During Period, Value, New Issues	813,871	813,716			155
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(9,240)	(9,240)
Equity, Including Portion Attributable to Noncontrolling Interest	$ 16,308,940	$ 8,612,713	$ 12,326,289	$ 34,438	$ 5,775	$ (4,766,215)	$ 95,940	$ 3,488,528	$ 1,200,125	$ 2,200,201	$ 49,452	$ 38,750	2,602,626	$ 5,311	$ 2,597,315	4,649,265	$ 12,632	$ 4,636,633	11,654,437		$ 50,555	$ 42,996	$ 11,560,886	727,742	$ 941,753	$ 32,809	$ 908,944
Redeemable Noncontrolling Interest, Equity, Preferred, Fair Value																				$ 1,300,000
Members' Equity													$ 2,597,315			$ 4,636,633			$ 11,560,886					$ 727,742