Rate And Regulatory Matters (Correction Of Regulatory Asset For Income Taxes, Statement Of Changes In Equity) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Beginning Balance			$ 9,291,089	$ 9,055,270
Net income	244,182	342,670	579,220	566,513
Ending Balance	9,502,451	9,284,522	9,502,451	9,284,522
Entergy Arkansas [Member]
Beginning Balance			1,579,616	1,444,124
Net income	82,577	82,551	137,779	142,180
Ending Balance	1,697,240	1,581,149	1,697,240	1,581,149
Entergy Gulf States Louisiana [Member]
Beginning Balance			1,383,004	1,333,776
Net income	62,642	50,210	119,528	128,958
Ending Balance	1,384,909	1,407,998	1,384,909	1,407,998
Entergy Gulf States Louisiana [Member] | Member's Equity [Member]
Beginning Balance			1,438,233	1,393,386
Net income			119,528	128,958
Ending Balance	1,437,258	1,455,211	1,437,258	1,455,211
Entergy Louisiana [Member]
Beginning Balance			3,070,496	2,564,929
Net income	100,597	80,208	207,350	244,217
Ending Balance	2,902,823	2,805,223	2,902,823	2,805,223
Entergy Louisiana [Member] | Member's Equity [Member]
Beginning Balance			3,016,628	2,504,436
Net income			207,350	244,217
Ending Balance	2,846,910	2,742,840	2,846,910	2,742,840
Entergy Mississippi [Member]
Beginning Balance			879,646	835,706
Net income	33,813	27,080	66,701	51,676
Ending Balance	936,826	885,261	936,826	885,261
Entergy New Orleans
Beginning Balance			195,565	181,165
Net income	8,086	10,555	9,990	17,781
Ending Balance	204,831	196,522	204,831	196,522
Entergy Texas [Member]
Beginning Balance			854,146	899,355
Net income	35,801	19,234	47,676	37,182
Ending Balance	876,822	879,117	876,822	879,117
System Energy [Member]
Beginning Balance			832,729	800,563
Net income	35,105	30,616	90,845	92,520
Ending Balance	$ 873,574	$ 860,333	$ 873,574	$ 860,333