Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total	Subsidiaries' Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Entergy Arkansas [Member]	Entergy Louisiana [Member]	Entergy Louisiana [Member] Member's Equity [Member]	Entergy Louisiana [Member] Accumulated Other Comprehensive Income [Member]	Entergy Mississippi [Member]	Entergy New Orleans [Member]	Entergy Texas [Member]	Entergy Texas [Member] Subsidiaries' Preferred Stock [Member]	Entergy Texas [Member] Common Stock [Member]	Entergy Texas [Member] Paid In Capital [Member]	Entergy Texas [Member] Retained Earnings [Member]	System Energy [Member]	System Energy [Member] Common Stock [Member]	System Energy [Member] Retained Earnings [Member]	Entergy Corporation [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 7,992,515	$ 0	$ 2,548	$ (5,397,637)	$ 5,433,433	$ 7,977,702	$ (23,531)	$ 2,376,754	$ 5,308,804	$ 5,355,204	$ (46,400)	$ 1,177,870	$ 415,548	$ 1,260,167	$ 0	$ 49,452	$ 596,994	$ 613,721	$ 710,809	$ 658,350	$ 52,459
Consolidated net income	862,555	13,894	0	0	0		0	252,707	675,614	675,614	0	126,078	53,152	162,235	0	0	0	162,235	94,109	0	94,109
Net Income (Loss) Attributable to Parent	848,661					848,661
Proceeds from Contributions from Parent								350,000				0	0	0					0
Other comprehensive income (loss)	83,470	0	0	0	0	0	83,470		50,296	0	50,296
Stock Issued During Period, Value, New Issues	500,000	0	68	0	499,932	0	0
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(728)	0	0	0	(728)	0	0
Payments for Repurchase of Preferred Stock and Preference Stock	(53,868)							(32,660)				(21,208)
Noncash Capital Contribution from Parent								94,335
Common stock issuances related to stock plans	142,712	0	0	123,918	18,794	0	0
Dividends, Common Stock, Cash	(647,704)	0	0	0	0	(647,704)	0	(91,751)	(128,000)	(128,000)	0	(10,000)	(23,750)						(67,720)	(56,500)	(11,220)
Preferred Stock Redemptions	1,723	0	0	0	0	1,723	0
Other								2,307	(9)	(9)	0	(888)
Dividends, Preferred Stock, Cash	(13,894)	(13,894)	0	0	0	0	0	(1,249)				(834)										$ (13,900)
Tax Cuts and Jobs Act, Portion Reclassified from AOCI to Retained Earnings	(16,538)	0	0	0	0	(32,043)	15,505
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect									(3,787)	6,262	(10,049)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	8,844,305	0	2,616	(5,273,719)	5,951,431	8,721,150	(557,173)	2,983,103	5,902,918	5,909,071	(6,153)	1,292,226	444,950	1,422,402	0	49,452	596,994	775,956	737,198	601,850	135,348
Consolidated net income	1,258,244	17,018	0	0	0		0	262,964	691,537	691,537	0	119,925	52,629	159,397	0	0	0	159,397	99,120	0	99,120
Net Income (Loss) Attributable to Parent	1,241,226					1,241,226
Proceeds from Contributions from Parent								0				130,000	0	185,000		0	185,000	0	0
Other comprehensive income (loss)	117,059	0	0	0	0	0	117,059		10,715	0	10,715
Stock Issued During Period, Value, New Issues	607,650	0	84	0	607,566	0	0							33,188	35,000	0	(1,812)	0
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(7)	0	0	0	(7)	0	0
Payments for Repurchase of Preferred Stock and Preference Stock	(50,000)							0				0
Common stock issuances related to stock plans	125,015	0	0	119,569	5,446	0	0
Dividends, Common Stock, Cash	(711,573)	0	0	0	0	(711,573)	0	(115,000)	(208,000)	(208,000)	0								(124,250)	0	(124,250)
Preferred Stock Redemptions	35,000	35,000	0	0	0	0	0
Other								(5,130)	(52)	(52)	0
Dividends, Preferred Stock, Cash	(17,018)	(17,018)	0	0	0	0	0							(580)	0	0	0	(580)				(16,500)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	10,258,675	35,000	2,700	(5,154,150)	6,564,436	9,257,609	(446,920)	3,125,937	6,397,118	6,392,556	4,562	1,542,151	497,579	1,799,407	35,000	49,452	780,182	934,773	712,068	601,850	110,218
Consolidated net income	1,406,653	18,319	0	0	0		0	245,232	1,082,352	1,082,352	0	140,583	49,338	215,073	0	0	0	215,073	99,131	0	99,131
Net Income (Loss) Attributable to Parent	1,388,334					1,388,334
Proceeds from Contributions from Parent								0				0	60,000	175,000	0	0	175,000	0	350,000	350,000	0
Other comprehensive income (loss)	(2,287)	0	0	0	0	0	(2,287)		(235)	0	(235)
Payments for Repurchase of Preferred Stock and Preference Stock	0							0				0
Common stock issuances related to stock plans	65,181	0	0	79,694	(14,513)	0	0
Dividends, Common Stock, Cash	(748,342)	0	0	0	0	(748,342)	0	(95,000)	(21,500)	(21,500)	0	(10,000)		(30,000)	0	0	0	(30,000)	(80,653)	0	(80,653)
Other									(47)	(47)	0			20	0	0	20	0
Dividends, Preferred Stock, Cash	(18,319)	(18,319)	0	0	0	0	0							(1,882)	0	0	0	(1,882)				$ (16,500)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 10,961,142	$ 35,000	$ 2,700	$ (5,074,456)	$ 6,549,923	$ 9,897,182	$ (449,207)	$ 3,276,169	$ 7,457,688	$ 7,453,361	$ 4,327	$ 1,672,734	$ 606,917	$ 2,157,578	$ 35,000	$ 49,452	$ 955,162	$ 1,117,964	$ 1,080,546	$ 951,850	$ 128,696