Income Taxes (Schedule Of Income Tax Expenses From Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Federal	$ 77,166	$ 90,061	$ 88,291
Foreign	97	90	101
State	157,829	(12,637)	20,584
Total	235,092	77,514	108,976
Deferred and non-current -- net	(864,799)	528,326	126,935
Investment tax credit adjustments - net	(13,220)	(16,243)	(9,930)
Total income taxes as reported	(642,927)	589,597	225,981
Entergy Arkansas [Member]
Federal	66,966	(34,258)	(13,574)
State	6,265	(678)	6,122
Total	73,231	(34,936)	(7,452)
Deferred and non-current -- net	(31,463)	119,841	101,253
Investment tax credit adjustments - net	(1,227)	(1,276)	(2,014)
Total income taxes as reported	40,541	83,629	91,787
Entergy Louisiana [Member]
Federal	101,382	(44,909)	(18,797)
State	35,406	(1,191)	(15,631)
Total	136,788	(46,100)	(34,428)
Deferred and non-current -- net	47,220	236,794	179,036
Investment tax credit adjustments - net	(5,337)	(5,642)	(5,912)
Total income taxes as reported	178,671	185,052	138,696
Entergy Mississippi [Member]
Federal	25,628	8,103	2,498
State	6,832	7,474	4,849
Total	32,460	15,577	7,347
Deferred and non-current -- net	31,149	42,305	41,150
Investment tax credit adjustments - net	(1,737)	(2,172)	1,260
Total income taxes as reported	61,872	55,710	49,757
Entergy New Orleans [Member]
Federal	(9,346)	(1,428)	14,823
State	1,784	510	(1,267)
Total	(7,562)	(918)	13,556
Deferred and non-current -- net	32,890	14,592	(11,033)
Investment tax credit adjustments - net	(138)	(224)	(246)
Total income taxes as reported	25,190	13,450	2,277
Entergy Texas [Member]
Federal	53,313	48,610	37,199
State	2,450	4,877	(843)
Total	55,763	53,487	36,356
Deferred and non-current -- net	(17,599)	(2,418)	(4,639)
Investment tax credit adjustments - net	(914)	(1,425)	(1,609)
Total income taxes as reported	37,250	49,644	30,108
System Energy [Member]
Federal	(63,302)	19,908	(6,199)
State	26,755	15,379	15,845
Total	(36,547)	35,287	9,646
Deferred and non-current -- net	93,491	53,501	60,614
Investment tax credit adjustments - net	(3,867)	(5,478)	(1,407)
Total income taxes as reported	$ 53,077	$ 83,310	$ 68,853