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	$ 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		$ 972,039	$ 13,095	$ 958,944
Members' Equity																								$ 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)
Common Stock, Dividends, Per Share, Declared	$ 0.60
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (4,580)							(518)
Net Income (Loss) Attributable to Noncontrolling Interest													(2,479)			(1,191)			752
Other Comprehensive Income (Loss), Net of Tax	(3,729)			(3,729)															(971)		(971)
Proceeds from Contributions from Parent								0					62,500
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(2,621)	40,777				(43,398)
Stockholders' Equity, Other																			(12)				(12)
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																								614,396
Equity, Including Portion Attributable to Noncontrolling Interest	17,014,167	8,979,387	12,698,436	(3,006)	5,832	(4,757,573)	91,091	3,898,211	1,425,125	2,384,884	49,452	38,750	2,983,216	5,066	2,978,150	4,710,187	10,818	4,699,369	11,931,186		33,916	40,207	11,857,063	608,012	960,134	51,190	908,944
Redeemable Noncontrolling Interest, Equity, Preferred, Fair Value																				$ 1,300,000
Members' Equity													2,978,150			4,699,369			11,857,063					608,012
Dividends, Preferred Stock, Cash	4,580						4,580	518		518																		$ 4,000
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	390,805		384,916				5,889	73,435		73,435			84,318	12	84,306	82,701	590	82,111	275,900			707	275,193	6,384	23,016	23,016
Capital Contribution from Parent								365,000	365,000				198,000		198,000
Dividends, Common Stock, Cash	(292,867)		(292,867)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (998)						(998)									(79)	(79)		(919)			(919)
Common Stock, Dividends, Per Share, Declared	$ 0.64
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (4,580)							(518)
Net Income (Loss) Attributable to Noncontrolling Interest													12			590			707
Other Comprehensive Income (Loss), Net of Tax	3,911			3,911															(1,087)		(1,087)
Proceeds from Contributions from Parent								365,000					198,000
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	18,006	49,959				(31,953)
Stockholders' Equity, Other																			(14)				(14)
Stock Issued During Period, Value, New Issues	349,718	349,672			46
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(4,007)	(4,007)
Equity, Including Portion Attributable to Noncontrolling Interest	$ 17,438,143	$ 9,275,093	$ 12,790,485	$ 905	$ 5,878	$ (4,725,620)	$ 91,402	$ 4,336,128	$ 1,790,125	$ 2,457,801	$ 49,452	$ 38,750	3,265,534	$ 5,078	$ 3,260,456	4,792,809	$ 11,329	$ 4,781,480	12,205,066		$ 32,829	$ 39,995	$ 12,132,242	614,396	$ 983,150	$ 74,206	$ 908,944
Redeemable Noncontrolling Interest, Equity, Preferred, Fair Value																				$ 1,300,000
Members' Equity													$ 3,260,456			$ 4,781,480			$ 12,132,242					$ 614,396