Rate And Regulatory Matters (Correction Of Regulatory Asset For Income Taxes, Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Regulatory asset for income taxes - net	$ 849,718	$ 742,030
Accumulated deferred income taxes - current	28,307	13,109
Accumulated deferred income taxes and taxes accrued	8,724,635	8,311,756
Member's equity	9,726,466	9,291,089	9,055,270	8,590,400
Entergy Arkansas [Member]
Regulatory asset for income taxes - net	73,864	80,751
Accumulated deferred income taxes - current	9,231	5,927
Accumulated deferred income taxes and taxes accrued	1,906,562	1,829,281
Member's equity	1,719,718	1,579,616	1,444,124	1,403,906
Entergy Gulf States Louisiana [Member]
Regulatory asset for income taxes - net	165,456	171,051
Accumulated deferred income taxes - current	36,330	22,249
Accumulated deferred income taxes and taxes accrued	1,512,547	1,403,195
Member's equity	1,460,977	1,383,004	1,333,776	1,464,289
Entergy Louisiana [Member]
Regulatory asset for income taxes - net	309,617	193,114
Accumulated deferred income taxes - current	338	0
Accumulated deferred income taxes and taxes accrued	1,275,584	930,606
Member's equity	2,975,652	3,070,496	2,564,929	2,136,871
Entergy Mississippi [Member]
Regulatory asset for income taxes - net	58,716	63,614
Accumulated deferred income taxes - current	15,413	218
Accumulated deferred income taxes and taxes accrued	746,939	761,812
Member's equity	951,577	879,646	835,706	733,105
Entergy New Orleans [Member]
Accumulated deferred income taxes and taxes accrued	183,636	172,790
Member's equity	206,283	195,565	181,165	188,154
Entergy Texas [Member]
Regulatory asset for income taxes - net	129,069	131,287
Accumulated deferred income taxes - current	33,847	0
Accumulated deferred income taxes and taxes accrued	1,022,955	1,009,081
Member's equity	887,027	854,146	899,355	824,290
System Energy [Member]
Regulatory asset for income taxes - net	115,492	126,503
Accumulated deferred income taxes - current	2,310	1,789
Accumulated deferred income taxes and taxes accrued	737,973	782,469
Member's equity	876,107	832,729	800,563	812,366
Member's Equity [Member] | Entergy Gulf States Louisiana [Member]
Member's equity	1,479,179	1,438,233	1,393,386	1,494,593
Member's Equity [Member] | Entergy Louisiana [Member]
Member's equity	$ 2,885,287	$ 3,016,628	$ 2,504,436	$ 2,061,833