Income Taxes (Schedule Of Income Tax Expenses From Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Federal	$ 36,848	$ 29,595	$ 45,249
Foreign	0	0	68
State	7,274	15,478	(14,960)
Total	44,122	45,073	30,357
Deferred and non-current -- net	(1,074,416)	505,010	(840,465)
Investment tax credit adjustments - net	(6,532)	(7,513)	(7,151)
Income Tax Expense (Benefit)	(1,036,826)	542,570	(817,259)
Entergy Arkansas [Member]
Federal	(23,638)	16,086	(14,748)
State	(1,617)	9,191	2,805
Total	(25,255)	25,277	(11,943)
Deferred and non-current -- net	(270,586)	69,753	120,942
Investment tax credit adjustments - net	(1,226)	(1,226)	(1,226)
Income Tax Expense (Benefit)	(297,067)	93,804	107,773
Entergy Louisiana [Member]
Federal	(15,841)	(84,250)	(124,113)
State	(1,122)	1,480	10,757
Total	(16,963)	(82,770)	(113,356)
Deferred and non-current -- net	(32,725)	572,988	208,157
Investment tax credit adjustments - net	(4,923)	(4,920)	(5,067)
Income Tax Expense (Benefit)	(54,611)	485,298	89,734
Entergy Mississippi [Member]
Federal	(11,275)	(8,845)	10,603
State	(1,066)	(924)	2,257
Total	(12,341)	(9,769)	12,860
Deferred and non-current -- net	(114,738)	83,501	46,984
Deferred Other Tax Expense (Benefit)	1,306	187	4,010
Income Tax Expense (Benefit)	(125,773)	73,919	63,854
Entergy New Orleans [Member]
Federal	(10,813)	(30,635)	(91,067)
State	545	(728)	566
Total	(10,268)	(31,363)	(90,501)
Deferred and non-current -- net	7,943	62,946	119,345
Investment tax credit adjustments - net	(111)		(139)
Deferred Other Tax Expense (Benefit)		1,695
Income Tax Expense (Benefit)	(2,436)	33,278	28,705
Entergy Texas [Member]
Federal	16,190	6,034	19,656
State	3,205	310	1,374
Total	19,395	6,344	21,030
Deferred and non-current -- net	(44,817)	43,102	42,982
Investment tax credit adjustments - net	(821)	(965)	(915)
Income Tax Expense (Benefit)	(26,243)	48,481	63,097
System Energy [Member]
Federal	(9,786)	47,674	29,628
State	(1,821)	5,314	(25,825)
Total	(11,607)	52,988	3,803
Deferred and non-current -- net	(35,329)	19,243	71,051
Investment tax credit adjustments - net	(739)	(2,262)	(3,793)
Income Tax Expense (Benefit)	$ (47,675)	$ 69,969	$ 71,061