Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
OPERATING REVENUES
Electric	$ 2,320,360	$ 2,733,601	$ 6,039,752	$ 6,811,538
Natural gas	23,557	26,439	93,444	126,453
Competitive businesses	619,643	635,513	1,732,624	1,802,050
TOTAL	2,963,560	3,395,553	7,865,820	8,740,041
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	596,270	849,982	1,572,265	1,921,007
Purchased power	336,552	475,335	966,816	1,289,180
Nuclear refueling outage expenses	62,582	64,566	184,288	191,517
Asset impairment	0	0	355,524	0
Other operation and maintenance	765,242	708,821	2,259,758	2,077,066
Decommissioning	56,796	56,467	126,641	167,229
Taxes other than income taxes	149,049	152,044	424,329	406,493
Depreciation and amortization	281,740	283,581	836,711	812,672
Other regulatory charges (credits) - net	24,477	203,848	162,509	204,338
TOTAL	2,272,708	2,794,644	6,888,841	7,069,502
OPERATING INCOME	690,852	600,909	976,979	1,670,539
OTHER INCOME
Allowance for equity funds used during construction	18,396	21,516	70,986	59,558
Interest and investment income	24,490	33,238	94,767	95,906
Miscellaneous - net	(10,768)	(14,137)	(41,794)	(40,498)
TOTAL	32,118	40,617	123,959	114,966
INTEREST EXPENSE
Interest expense	155,800	137,301	452,162	409,484
Allowance for borrowed funds used during construction	(8,003)	(9,713)	(27,877)	(27,397)
TOTAL	147,797	127,588	424,285	382,087
INCOME BEFORE INCOME TAXES	575,173	513,938	676,653	1,403,418
Income taxes	232,503	(119,131)	110,140	196,072
CONSOLIDATED NET INCOME	342,670	633,069	566,513	1,207,346
Preferred dividend requirements of subsidiaries	5,582	5,015	16,108	15,046
EARNINGS APPLICABLE TO COMMON STOCK	337,088	628,054	550,405	1,192,300
Earnings per average common share:
Basic	$ 1.90	$ 3.55	$ 3.11	$ 6.70
Diluted	$ 1.89	$ 3.53	$ 3.10	$ 6.67
Dividends declared per common share	$ 0.83	$ 0.83	$ 2.49	$ 2.49
Basic average number of common shares outstanding	177,517,846	176,950,469	177,184,464	177,857,667
Diluted average number of common shares outstanding	177,975,075	177,723,020	177,636,549	178,805,215
Entergy Arkansas [Member]
OPERATING REVENUES
Electric	656,201	658,356	1,633,401	1,618,687
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	116,026	100,381	362,954	269,494
Purchased power	145,305	164,901	318,474	373,244
Nuclear refueling outage expenses	11,891	11,172	35,441	31,391
Other operation and maintenance	140,730	129,300	406,561	373,530
Decommissioning	10,198	9,588	30,128	28,327
Taxes other than income taxes	26,676	24,989	69,073	63,520
Depreciation and amortization	55,092	54,483	165,697	163,993
Other regulatory charges (credits) - net	(2,553)	(1,280)	(35,478)	(9,611)
TOTAL	503,365	493,534	1,352,850	1,293,888
OPERATING INCOME	152,836	164,822	280,551	324,799
OTHER INCOME
Allowance for equity funds used during construction	2,258	2,033	6,491	4,913
Interest and investment income	3,861	3,938	11,233	13,099
Miscellaneous - net	(496)	(1,213)	(3,139)	(3,102)
TOTAL	5,623	4,758	14,585	14,910
INTEREST EXPENSE
Interest expense	20,532	20,726	61,707	62,749
Allowance for borrowed funds used during construction	(648)	(818)	(1,724)	(1,919)
TOTAL	19,884	19,908	59,983	60,830
INCOME BEFORE INCOME TAXES	138,575	149,672	235,153	278,879
Income taxes	56,024	68,727	92,973	122,028
CONSOLIDATED NET INCOME	82,551	80,945	142,180	156,851
Preferred dividend requirements of subsidiaries	1,718	1,718	5,155	5,155
EARNINGS APPLICABLE TO COMMON STOCK	80,833	79,227	137,025	151,696
Entergy Gulf States Louisiana [Member]
OPERATING REVENUES
Electric	425,999	587,275	1,201,178	1,565,964
Natural gas	8,452	9,673	34,251	49,444
TOTAL	434,451	596,948	1,235,429	1,615,408
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	34,821	135,034	131,248	291,592
Purchased power	156,398	224,452	417,909	622,949
Nuclear refueling outage expenses	4,415	4,454	13,147	13,796
Other operation and maintenance	89,446	89,081	267,505	255,566
Decommissioning	3,783	3,572	11,187	10,565
Taxes other than income taxes	19,141	20,668	55,728	58,246
Depreciation and amortization	36,958	35,784	109,345	107,183
Other regulatory charges (credits) - net	3,928	(16,373)	32,536	(17,695)
TOTAL	348,890	496,672	1,038,605	1,342,202
OPERATING INCOME	85,561	100,276	196,824	273,206
OTHER INCOME
Allowance for equity funds used during construction	1,760	2,273	6,512	6,176
Interest and investment income	13,442	10,269	33,350	30,100
Miscellaneous - net	(1,615)	(2,643)	(6,727)	(6,515)
TOTAL	13,587	9,899	33,135	29,761
INTEREST EXPENSE
Interest expense	20,406	20,731	62,297	63,311
Allowance for borrowed funds used during construction	(652)	(931)	(2,516)	(2,624)
TOTAL	19,754	19,800	59,781	60,687
INCOME BEFORE INCOME TAXES	79,394	90,375	170,178	242,280
Income taxes	29,184	37,205	41,220	92,083
CONSOLIDATED NET INCOME	50,210	53,170	128,958	150,197
Preferred dividend requirements of subsidiaries	206	206	619	619
EARNINGS APPLICABLE TO COMMON STOCK	50,004	52,964	128,339	149,578
Entergy Louisiana [Member]
OPERATING REVENUES
Electric	614,044	786,814	1,658,189	1,954,095
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	134,108	221,832	320,991	450,589
Purchased power	168,817	239,484	505,935	670,408
Nuclear refueling outage expenses	6,103	6,861	18,573	21,042
Other operation and maintenance	106,523	107,740	334,559	320,544
Decommissioning	5,169	6,219	18,172	18,328
Taxes other than income taxes	17,913	18,232	52,122	53,316
Depreciation and amortization	54,642	52,991	162,474	154,414
Other regulatory charges (credits) - net	(956)	195,161	128,749	182,951
TOTAL	492,319	848,520	1,541,575	1,871,592
OPERATING INCOME	121,725	(61,706)	116,614	82,503
OTHER INCOME
Allowance for equity funds used during construction	9,981	8,278	27,032	23,929
Interest and investment income	21,566	21,975	63,178	66,101
Miscellaneous - net	519	(1,353)	(1,680)	(2,007)
TOTAL	32,066	28,900	88,530	88,023
INTEREST EXPENSE
Interest expense	35,731	25,363	101,434	84,698
Allowance for borrowed funds used during construction	(4,776)	(4,373)	(12,530)	(12,776)
TOTAL	30,955	20,990	88,904	71,922
INCOME BEFORE INCOME TAXES	122,836	(53,796)	116,240	98,604
Income taxes	42,628	(391,518)	(127,977)	(354,521)
CONSOLIDATED NET INCOME	80,208	337,722	244,217	453,125
Preferred dividend requirements of subsidiaries	1,738	1,738	5,213	5,213
EARNINGS APPLICABLE TO COMMON STOCK	78,470	335,984	239,004	447,912
Entergy Mississippi [Member]
OPERATING REVENUES
Electric	321,771	365,569	860,735	956,746
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	57,230	111,804	204,703	243,674
Purchased power	93,817	95,319	232,140	270,823
Other operation and maintenance	64,446	53,231	173,043	156,577
Taxes other than income taxes	19,742	18,279	56,980	52,841
Depreciation and amortization	24,377	23,476	72,451	69,630
Other regulatory charges (credits) - net	2,828	2,525	(8,476)	14,700
TOTAL	262,440	304,634	730,841	808,245
OPERATING INCOME	59,331	60,935	129,894	148,501
OTHER INCOME
Allowance for equity funds used during construction	760	1,927	2,950	6,246
Interest and investment income	19	120	43	187
Miscellaneous - net	(806)	(742)	(2,916)	(2,579)
TOTAL	(27)	1,305	77	3,854
INTEREST EXPENSE
Interest expense	14,113	10,155	42,761	38,604
Allowance for borrowed funds used during construction	(405)	(1,072)	(1,568)	(3,474)
TOTAL	13,708	9,083	41,193	35,130
INCOME BEFORE INCOME TAXES	45,596	53,157	88,778	117,225
Income taxes	18,516	19,988	37,102	42,913
CONSOLIDATED NET INCOME	27,080	33,169	51,676	74,312
Preferred dividend requirements of subsidiaries	707	707	2,121	2,121
EARNINGS APPLICABLE TO COMMON STOCK	26,373	32,462	49,555	72,191
Entergy New Orleans
OPERATING REVENUES
Electric	146,459	165,266	360,772	413,777
Natural gas	15,106	16,766	59,193	77,009
TOTAL	161,565	182,032	419,965	490,786
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	29,298	53,013	68,585	133,698
Purchased power	62,410	57,052	164,042	156,433
Other operation and maintenance	28,671	14,850	92,475	70,888
Taxes other than income taxes	11,941	11,564	33,110	32,716
Depreciation and amortization	9,178	8,473	27,446	26,371
Other regulatory charges (credits) - net	502	477	1,483	1,434
TOTAL	142,000	145,429	387,141	421,540
OPERATING INCOME	19,565	36,603	32,824	69,246
OTHER INCOME
Allowance for equity funds used during construction	185	147	487	369
Interest and investment income	8	59	29	122
Miscellaneous - net	(385)	(317)	(1,147)	(848)
TOTAL	(192)	(111)	(631)	(357)
INTEREST EXPENSE
Interest expense	2,738	2,768	8,366	8,321
Allowance for borrowed funds used during construction	(88)	(67)	(230)	(167)
TOTAL	2,650	2,701	8,136	8,154
INCOME BEFORE INCOME TAXES	16,723	33,791	24,057	60,735
Income taxes	6,168	14,848	6,276	24,658
CONSOLIDATED NET INCOME	10,555	18,943	17,781	36,077
Preferred dividend requirements of subsidiaries	241	241	724	724
EARNINGS APPLICABLE TO COMMON STOCK	10,314	18,702	17,057	35,353
Entergy Texas [Member]
OPERATING REVENUES
Electric	489,078	556,955	1,174,069	1,350,262
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	103,542	127,745	178,473	247,568
Purchased power	200,483	222,283	523,208	613,794
Other operation and maintenance	58,343	52,455	170,791	149,373
Taxes other than income taxes	19,031	22,680	50,640	52,567
Depreciation and amortization	23,043	19,823	64,887	59,059
Other regulatory charges (credits) - net	23,402	25,159	50,791	37,816
TOTAL	427,844	470,145	1,038,790	1,160,177
OPERATING INCOME	61,234	86,810	135,279	190,085
OTHER INCOME
Allowance for equity funds used during construction	1,281	946	3,355	2,493
Interest and investment income	(5,566)	1,374	(2,648)	4,112
Miscellaneous - net	(1,520)	(730)	(3,164)	(1,700)
TOTAL	(5,805)	1,590	(2,457)	4,905
INTEREST EXPENSE
Interest expense	24,246	24,616	71,510	69,657
Allowance for borrowed funds used during construction	(1,033)	(653)	(2,417)	(1,721)
TOTAL	23,213	23,963	69,093	67,936
INCOME BEFORE INCOME TAXES	32,216	64,437	63,729	127,054
Income taxes	12,982	23,562	26,547	47,356
CONSOLIDATED NET INCOME	19,234	40,875	37,182	79,698
System Energy [Member]
OPERATING REVENUES
Electric	188,680	152,431	428,413	409,946
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	25,538	19,698	38,976	58,873
Nuclear refueling outage expenses	7,304	4,115	14,352	12,204
Other operation and maintenance	38,029	36,493	105,754	100,336
Decommissioning	8,327	7,752	24,541	23,568
Taxes other than income taxes	5,230	5,312	16,262	16,525
Depreciation and amortization	47,991	42,362	102,989	96,608
Other regulatory charges (credits) - net	(2,673)	(1,821)	(7,096)	(7,071)
TOTAL	129,746	113,911	295,778	301,043
OPERATING INCOME	58,934	38,520	132,635	108,903
OTHER INCOME
Allowance for equity funds used during construction	2,171	5,912	24,158	15,433
Interest and investment income	2,506	3,054	8,108	8,103
Miscellaneous - net	(146)	(253)	(446)	(502)
TOTAL	4,531	8,713	31,820	23,034
INTEREST EXPENSE
Interest expense	12,631	14,548	34,076	33,673
Allowance for borrowed funds used during construction	(401)	(1,800)	(6,892)	(4,716)
TOTAL	12,230	12,748	27,184	28,957
INCOME BEFORE INCOME TAXES	51,235	34,485	137,271	102,980
Income taxes	20,619	20,222	44,751	47,395
CONSOLIDATED NET INCOME	$ 30,616	$ 14,263	$ 92,520	$ 55,585