Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
OPERATING REVENUES
Electric	$ 1,784,841	$ 1,865,899
Natural gas	46,008	71,123
Competitive businesses	552,810	604,186
TOTAL	2,383,659	2,541,208
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	538,837	507,693
Purchased power	284,966	362,618
Nuclear refueling outage expenses	63,884	63,985
Asset impairment	355,524	0
Other operation and maintenance	721,635	655,748
Decommissioning	57,903	55,265
Taxes other than income taxes	137,170	125,234
Depreciation and amortization	280,215	264,885
Other regulatory charges (credits) - net	382	(5,111)
TOTAL	2,440,516	2,030,317
OPERATING INCOME (LOSS)	(56,857)	510,891
OTHER INCOME
Allowance for equity funds used during construction	24,307	17,289
Interest and investment income	40,992	26,747
Miscellaneous - net	(17,990)	(9,399)
TOTAL	47,309	34,637
INTEREST EXPENSE
Interest expense	146,745	136,134
Allowance for borrowed funds used during construction	(9,391)	(8,534)
TOTAL	137,354	127,600
INCOME (LOSS) BEFORE INCOME TAXES	(146,902)	417,928
Income taxes	(162)	164,250
CONSOLIDATED NET INCOME (LOSS)	(146,740)	253,678
Preferred dividend requirements	4,943	5,015
EARNINGS (LOSS) APPLICABLE TO COMMON STOCK	(151,683)	248,663
Earnings (loss) per average common share:
Basic	$ (0.86)	$ 1.39
Diluted	$ (0.86)	$ 1.38
Dividends declared per common share	$ 0.83	$ 0.83
Basic average number of common shares outstanding	176,865,363	178,834,342
Diluted average number of common shares outstanding	177,388,045	180,083,830
Entergy Arkansas [Member]
OPERATING REVENUES
TOTAL	475,178	443,498
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	134,802	82,231
Purchased power	78,796	92,854
Nuclear refueling outage expenses	11,787	9,961
Other operation and maintenance	125,373	116,984
Decommissioning	9,888	9,297
Taxes other than income taxes	20,684	19,579
Depreciation and amortization	55,241	55,258
Other regulatory charges (credits) - net	(1,209)	(3,571)
TOTAL	435,362	382,593
OPERATING INCOME (LOSS)	39,816	60,905
OTHER INCOME
Allowance for equity funds used during construction	1,725	1,065
Interest and investment income	5,857	3,780
Miscellaneous - net	(1,453)	(749)
TOTAL	6,129	4,096
INTEREST EXPENSE
Interest expense	20,750	21,063
Allowance for borrowed funds used during construction	(442)	(479)
TOTAL	20,308	20,584
INCOME (LOSS) BEFORE INCOME TAXES	25,637	44,417
Income taxes	11,763	18,809
CONSOLIDATED NET INCOME (LOSS)	13,874	25,608
Preferred dividend requirements	1,718	1,718
EARNINGS (LOSS) APPLICABLE TO COMMON STOCK	12,156	23,890
Entergy Gulf States Louisiana [Member]
OPERATING REVENUES
Electric	382,186	467,041
Natural gas	17,436	28,857
TOTAL	399,622	495,898
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	71,297	80,635
Purchased power	124,164	191,108
Nuclear refueling outage expenses	4,365	5,018
Other operation and maintenance	85,635	79,014
Decommissioning	3,676	3,471
Taxes other than income taxes	18,895	18,801
Depreciation and amortization	36,097	35,724
Other regulatory charges (credits) - net	267	(942)
TOTAL	344,396	412,829
OPERATING INCOME (LOSS)	55,226	83,069
OTHER INCOME
Allowance for equity funds used during construction	2,262	1,740
Interest and investment income	11,238	9,358
Miscellaneous - net	(2,628)	(2,161)
TOTAL	10,872	8,937
INTEREST EXPENSE
Interest expense	21,055	21,349
Allowance for borrowed funds used during construction	(899)	(865)
TOTAL	20,156	20,484
INCOME (LOSS) BEFORE INCOME TAXES	45,942	71,522
Income taxes	17,584	24,903
CONSOLIDATED NET INCOME (LOSS)	28,358	46,619
Preferred dividend requirements	206	206
EARNINGS (LOSS) APPLICABLE TO COMMON STOCK	28,152	46,413
Entergy Louisiana [Member]
OPERATING REVENUES
TOTAL	482,358	515,434
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	72,059	85,225
Purchased power	178,213	200,378
Nuclear refueling outage expenses	6,386	7,475
Other operation and maintenance	115,741	106,365
Decommissioning	6,444	6,001
Taxes other than income taxes	17,282	16,739
Depreciation and amortization	53,679	49,646
Other regulatory charges (credits) - net	(3,588)	(3,956)
TOTAL	446,216	467,873
OPERATING INCOME (LOSS)	36,142	47,561
OTHER INCOME
Allowance for equity funds used during construction	8,449	7,374
Interest and investment income	21,248	20,410
Miscellaneous - net	(1,371)	(522)
TOTAL	28,326	27,262
INTEREST EXPENSE
Interest expense	32,668	28,635
Allowance for borrowed funds used during construction	(3,859)	(4,097)
TOTAL	28,809	24,538
INCOME (LOSS) BEFORE INCOME TAXES	35,659	50,285
Income taxes	2,364	9,987
CONSOLIDATED NET INCOME (LOSS)	33,295	40,298
Preferred dividend requirements	1,738	1,738
EARNINGS (LOSS) APPLICABLE TO COMMON STOCK	31,557	38,560
Entergy Mississippi [Member]
OPERATING REVENUES
TOTAL	261,760	288,983
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	84,559	81,306
Purchased power	65,428	75,134
Other operation and maintenance	48,336	48,007
Taxes other than income taxes	18,784	17,171
Depreciation and amortization	23,787	22,987
Other regulatory charges (credits) - net	(7,472)	7,092
TOTAL	233,422	251,697
OPERATING INCOME (LOSS)	28,338	37,286
OTHER INCOME
Allowance for equity funds used during construction	1,165	2,094
Interest and investment income	10	51
Miscellaneous - net	(1,055)	(554)
TOTAL	120	1,591
INTEREST EXPENSE
Interest expense	14,545	13,403
Allowance for borrowed funds used during construction	(616)	(1,165)
TOTAL	13,929	12,238
INCOME (LOSS) BEFORE INCOME TAXES	14,529	26,639
Income taxes	5,847	9,325
CONSOLIDATED NET INCOME (LOSS)	8,682	17,314
Preferred dividend requirements	707	707
EARNINGS (LOSS) APPLICABLE TO COMMON STOCK	7,975	16,607
Entergy New Orleans [Member]
OPERATING REVENUES
Electric	100,584	115,990
Natural gas	28,572	42,266
TOTAL	129,156	158,256
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	27,682	45,853
Purchased power	47,231	47,906
Other operation and maintenance	30,896	27,072
Taxes other than income taxes	10,548	11,021
Depreciation and amortization	9,069	8,992
Other regulatory charges (credits) - net	480	479
TOTAL	125,906	141,323
OPERATING INCOME (LOSS)	3,250	16,933
OTHER INCOME
Allowance for equity funds used during construction	149	106
Interest and investment income	15	54
Miscellaneous - net	(405)	(236)
TOTAL	(241)	(76)
INTEREST EXPENSE
Interest expense	2,833	2,789
Allowance for borrowed funds used during construction	(71)	(48)
TOTAL	2,762	2,741
INCOME (LOSS) BEFORE INCOME TAXES	247	14,116
Income taxes	207	5,189
CONSOLIDATED NET INCOME (LOSS)	40	8,927
Preferred dividend requirements	241	241
EARNINGS (LOSS) APPLICABLE TO COMMON STOCK	(201)	8,686
Entergy Texas [Member]
OPERATING REVENUES
TOTAL	326,924	348,884
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	44,038	44,081
Purchased power	152,123	180,664
Other operation and maintenance	55,823	47,241
Taxes other than income taxes	15,794	14,857
Depreciation and amortization	20,727	19,526
Other regulatory charges (credits) - net	13,356	(3,078)
TOTAL	301,861	303,291
OPERATING INCOME (LOSS)	25,063	45,593
OTHER INCOME
Allowance for equity funds used during construction	1,089	766
Interest and investment income	1,460	690
Miscellaneous - net	(795)	(175)
TOTAL	1,754	1,281
INTEREST EXPENSE
Interest expense	23,810	22,077
Allowance for borrowed funds used during construction	(726)	(526)
TOTAL	23,084	21,551
INCOME (LOSS) BEFORE INCOME TAXES	3,733	25,323
Income taxes	1,988	9,597
CONSOLIDATED NET INCOME (LOSS)	1,745	15,726
System Energy [Member]
OPERATING REVENUES
TOTAL	126,034	128,395
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	10,361	19,690
Nuclear refueling outage expenses	4,164	4,022
Other operation and maintenance	34,284	28,957
Decommissioning	8,034	8,202
Taxes other than income taxes	5,513	5,423
Depreciation and amortization	29,674	28,663
Other regulatory charges (credits) - net	(1,452)	(2,949)
TOTAL	90,578	92,008
OPERATING INCOME (LOSS)	35,456	36,387
OTHER INCOME
Allowance for equity funds used during construction	9,469	4,145
Interest and investment income	3,526	2,541
Miscellaneous - net	(157)	(104)
TOTAL	12,838	6,582
INTEREST EXPENSE
Interest expense	10,849	11,389
Allowance for borrowed funds used during construction	(2,777)	(1,353)
TOTAL	8,072	10,036
INCOME (LOSS) BEFORE INCOME TAXES	40,222	32,933
Income taxes	13,686	13,597
CONSOLIDATED NET INCOME (LOSS)	$ 26,536	$ 19,336