Income Taxes (Schedule Of Income Tax Expenses From Continuing Operations) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Federal	$ 90,061us-gaap_CurrentFederalTaxExpenseBenefit	$ 88,291us-gaap_CurrentFederalTaxExpenseBenefit	$ (47,851)us-gaap_CurrentFederalTaxExpenseBenefit
Foreign	90us-gaap_CurrentForeignTaxExpenseBenefit	101us-gaap_CurrentForeignTaxExpenseBenefit	143us-gaap_CurrentForeignTaxExpenseBenefit
State	(12,637)	20,584	(41,516)
Total	77,514us-gaap_CurrentIncomeTaxExpenseBenefit	108,976us-gaap_CurrentIncomeTaxExpenseBenefit	(89,224)us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred and non-current -- net	528,326	126,935	131,130
Investment tax credit adjustments - net	(16,243)	(9,930)	(11,051)
Total income taxes as reported	589,597us-gaap_IncomeTaxExpenseBenefit	225,981us-gaap_IncomeTaxExpenseBenefit	30,855us-gaap_IncomeTaxExpenseBenefit
Entergy Arkansas [Member]
Federal	(34,258)	(13,574)	64,069
State	(678)	6,122	6,712
Total	(34,936)	(7,452)	70,781
Deferred and non-current -- net	119,841	101,253	26,042
Investment tax credit adjustments - net	(1,276)	(2,014)	(2,017)
Total income taxes as reported	83,629	91,787	94,806
Entergy Gulf States Louisiana [Member]
Federal	(3,857)	12,176	(66,081)
State	(769)	(9,939)	9,535
Total	(4,626)	2,237	(56,546)
Deferred and non-current -- net	96,446	57,620	112,390
Investment tax credit adjustments - net	(3,038)	(3,038)	(3,228)
Total income taxes as reported	88,782	56,819	52,616
Entergy Louisiana [Member]
Federal	(41,052)	(30,973)	(132,999)
State	(422)	(5,692)	(1,269)
Total	(41,474)	(36,665)	(134,268)
Deferred and non-current -- net	140,348	121,416	8,463
Investment tax credit adjustments - net	(2,604)	(2,874)	(3,117)
Total income taxes as reported	96,270	81,877	(128,922)
Entergy Mississippi [Member]
Federal	8,103	2,498	3,188
State	7,474	4,849	(4,425)
Total	15,577	7,347	(1,237)
Deferred and non-current -- net	42,305	41,150	59,045
Investment tax credit adjustments - net	(2,172)	1,260	871
Total income taxes as reported	55,710	49,757	58,679
Entergy New Orleans [Member]
Federal	(1,924)	15,017	(9,484)
State	520	(1,221)	(1,617)
Total	(1,404)	13,796	(11,101)
Deferred and non-current -- net	13,952	(11,952)	18,586
Investment tax credit adjustments - net	(224)	(225)	(245)
Total income taxes as reported	12,324	1,619	7,240
Entergy Texas [Member]
Federal	48,610	37,199	(114,677)
State	4,877	(843)	4,933
Total	53,487	36,356	(109,744)
Deferred and non-current -- net	(2,418)	(4,639)	144,471
Investment tax credit adjustments - net	(1,425)	(1,609)	(1,609)
Total income taxes as reported	49,644	30,108	33,118
System Energy [Member]
Federal	19,908	(6,199)	(50,491)
State	15,379	15,845	(8,544)
Total	35,287	9,646	(59,035)
Deferred and non-current -- net	53,501	60,614	137,832
Investment tax credit adjustments - net	(5,478)	(1,407)	(1,682)
Total income taxes as reported	$ 83,310	$ 68,853	$ 77,115

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