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] 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]
Stockholders' Equity Attributable to Parent	$ 9,256,791	$ 0	$ 2,548	$ (5,552,379)	$ 5,403,758	$ 9,393,913	$ 8,951
TOTAL								$ 1,891,658	$ 4,737,312	$ 4,793,724	$ (56,412)	$ 1,012,050	$ 350,032	$ 961,456	$ 49,452	$ 481,994	$ 430,010	$ 781,079	$ 719,350	$ 61,729
Consolidated net income (loss)	(564,503)	19,115	0	0	0	(583,618)	0	167,212	622,047	622,047	0	109,184	48,849	107,538	0	0	107,538	96,744	0	96,744
Proceeds from Contributions from Parent								200,000					47,750	0
Preferred Stock Redemptions	(2,889)	0	0	0	0	(2,889)	0	(283)
Other comprehensive income (loss)	(43,922)	0	0	0	0	0	(43,922)		7,970	0	7,970
Payments for Repurchase of Preferred Stock and Preference Stock	(115,283)							(85,283)				(30,000)	0
Common stock issuances related to stock plans	67,282	0	0	53,795	13,487	0	0
Common stock dividends declared	(611,835)	0	0	0	0	(611,835)	0					(24,000)	(18,720)					(139,000)	(40,000)	(99,000)
Distribution to parent									(285,500)	(285,500)	0
Other									(20)	(20)	0
Dividends, Preferred Stock, Cash	(19,115)	(19,115)	0	0	0	0	0	(5,270)				(2,443)	(965)
Stockholders' Equity Attributable to Parent	8,081,809	0	2,548	(5,498,584)	5,417,245	8,195,571	(34,971)
TOTAL								2,253,317	5,081,809	5,130,251	(48,442)	1,094,791	426,946	1,068,994	49,452	481,994	537,548	738,823	679,350	59,473
Consolidated net income (loss)	425,353	13,741	0	0	0	411,612	0	139,844	316,347	316,347	0	110,032	44,553	76,173	0	0	76,173	78,596	0	78,596
Proceeds from Contributions from Parent								0					20,000	115,000	0	115,000	0
Preferred Stock Redemptions	(596)	0	0	0	0	(596)	0
Other comprehensive income (loss)	11,440	0	0	0	0	0	11,440		2,042	0	2,042
Payments for Repurchase of Preferred Stock and Preference Stock	(20,599)							0				0	(20,599)
Common stock issuances related to stock plans	117,135	0	0	100,947	16,188	0	0
Common stock dividends declared	(628,885)	0	0	0	0	(628,885)	0	(15,000)	(91,250)	(91,250)	0	(26,000)	(74,250)					(106,610)	(21,000)	(85,610)
Other								21	(144)	(144)	0		(860)
Dividends, Preferred Stock, Cash	(13,741)	(13,741)	0	0	0	0	0	(1,428)				(953)	(841)
Stockholders' Equity Attributable to Parent	7,992,515	0	2,548	(5,397,637)	5,433,433	7,977,702	(23,531)
TOTAL								2,376,754	5,308,804	5,355,204	(46,400)	1,177,870	415,548	1,260,167	49,452	596,994	613,721	710,809	658,350	52,459
Consolidated net income (loss)	862,555	13,894	0	0	0	848,661	0	252,707	675,614	675,614	0	126,078	53,152	162,235	0	0	162,235	94,109	0	94,109
Proceeds from Contributions from Parent								350,000					0	0
Preferred Stock Redemptions	(1,723)	0	0	0	0	(1,723)	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)	0
Noncash Capital Contribution from Parent								94,335
Common stock issuances related to stock plans	142,712	0	0	123,918	18,794	0	0
Common stock dividends declared	(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)
Other								2,307	(9)	(9)	0	(888)
Dividends, Preferred Stock, Cash	(13,894)	(13,894)	0	0	0	0	0	(1,249)				(834)
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect	(16,538)	0	0	0	0	(32,043)	15,505		(3,787)	6,262	(10,049)
Stockholders' Equity Attributable to Parent	$ 8,844,305	$ 0	$ 2,616	$ (5,273,719)	$ 5,951,431	$ 8,721,150	$ (557,173)
TOTAL								$ 2,983,103	$ 5,902,918	$ 5,909,071	$ (6,153)	$ 1,292,226	$ 444,950	$ 1,422,402	$ 49,452	$ 596,994	$ 775,956	$ 737,198	$ 601,850	$ 135,348