Consolidated Statements Of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
OPERATING REVENUES
Electric	$ 1,949,280	$ 1,784,841
Natural gas	53,321	46,008
Competitive businesses	606,273	552,810
TOTAL	2,608,874	2,383,659
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	510,333	538,837
Purchased power	373,129	284,966
Nuclear refueling outage expenses	60,719	63,884
Asset impairment	0	355,524
Other operation and maintenance	754,258	721,635
Decommissioning	59,104	57,903
Taxes other than income taxes	151,095	137,170
Depreciation and amortization	300,876	280,215
Other regulatory charges (credits) - net	5,315	382
TOTAL	2,214,829	2,440,516
OPERATING INCOME	394,045	(56,857)
OTHER INCOME
Allowance for equity funds used during construction	12,751	24,307
Interest and investment income	38,306	40,992
Miscellaneous - net	(13,623)	(17,990)
TOTAL	37,434	47,309
INTEREST EXPENSE
Interest expense	153,149	146,745
Allowance for borrowed funds used during construction	(5,188)	(9,391)
TOTAL	147,961	137,354
INCOME BEFORE INCOME TAXES	283,518	(146,902)
Income taxes	116,536	(162)
CONSOLIDATED NET INCOME	166,982	(146,740)
Preferred dividend requirements of subsidiaries	5,582	4,943
EARNINGS APPLICABLE TO COMMON STOCK	161,400	(151,683)
Earnings per average common share:
Basic	$ 0.91	$ (0.86)
Diluted	$ 0.90	$ (0.86)
Dividends declared per common share	$ 0.83	$ 0.83
Basic average number of common shares outstanding	178,027,961	176,865,363
Diluted average number of common shares outstanding	178,413,287	177,388,045
Entergy Arkansas [Member]
OPERATING REVENUES
Electric	542,392	475,178
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	147,773	134,802
Purchased power	106,314	78,796
Nuclear refueling outage expenses	11,540	11,787
Other operation and maintenance	141,620	125,373
Decommissioning	10,517	9,888
Taxes other than income taxes	23,252	20,684
Depreciation and amortization	58,636	55,241
Other regulatory charges (credits) - net	(574)	(1,209)
TOTAL	499,078	435,362
OPERATING INCOME	43,314	39,816
OTHER INCOME
Allowance for equity funds used during construction	2,226	1,725
Interest and investment income	5,775	5,857
Miscellaneous - net	(1,165)	(1,453)
TOTAL	6,836	6,129
INTEREST EXPENSE
Interest expense	22,579	20,750
Allowance for borrowed funds used during construction	(776)	(442)
TOTAL	21,803	20,308
INCOME BEFORE INCOME TAXES	28,347	25,637
Income taxes	13,628	11,763
CONSOLIDATED NET INCOME	14,719	13,874
Preferred dividend requirements of subsidiaries	1,718	1,718
EARNINGS APPLICABLE TO COMMON STOCK	13,001	12,156
Entergy Gulf States Louisiana [Member]
OPERATING REVENUES
Electric	399,137	382,186
Natural gas	20,818	17,436
TOTAL	419,955	399,622
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	47,838	71,297
Purchased power	162,077	124,164
Nuclear refueling outage expenses	4,326	4,365
Other operation and maintenance	92,722	85,635
Decommissioning	3,892	3,676
Taxes other than income taxes	19,238	18,895
Depreciation and amortization	37,372	36,097
Other regulatory charges (credits) - net	407	267
TOTAL	367,872	344,396
OPERATING INCOME	52,083	55,226
OTHER INCOME
Allowance for equity funds used during construction	1,650	2,262
Interest and investment income	10,855	11,238
Miscellaneous - net	(2,640)	(2,628)
TOTAL	9,865	10,872
INTEREST EXPENSE
Interest expense	20,199	21,055
Allowance for borrowed funds used during construction	(691)	(899)
TOTAL	19,508	20,156
INCOME BEFORE INCOME TAXES	42,440	45,942
Income taxes	15,275	17,584
CONSOLIDATED NET INCOME	27,165	28,358
Preferred dividend requirements of subsidiaries	206	206
EARNINGS APPLICABLE TO COMMON STOCK	26,959	28,152
Entergy Louisiana [Member]
OPERATING REVENUES
Electric	606,085	482,358
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	118,707	72,059
Purchased power	229,009	178,213
Nuclear refueling outage expenses	6,852	6,386
Other operation and maintenance	105,127	115,741
Decommissioning	5,301	6,444
Taxes other than income taxes	18,800	17,282
Depreciation and amortization	59,838	53,679
Other regulatory charges (credits) - net	(2,277)	(3,588)
TOTAL	541,357	446,216
OPERATING INCOME	64,728	36,142
OTHER INCOME
Allowance for equity funds used during construction	5,742	8,449
Interest and investment income	21,789	21,248
Miscellaneous - net	(860)	(1,371)
TOTAL	26,671	28,326
INTEREST EXPENSE
Interest expense	36,429	32,668
Allowance for borrowed funds used during construction	(2,448)	(3,859)
TOTAL	33,981	28,809
INCOME BEFORE INCOME TAXES	57,418	35,659
Income taxes	12,042	2,364
CONSOLIDATED NET INCOME	45,376	33,295
Preferred dividend requirements of subsidiaries	1,738	1,738
EARNINGS APPLICABLE TO COMMON STOCK	43,638	31,557
Entergy Mississippi [Member]
OPERATING REVENUES
Electric	291,641	261,760
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	73,561	84,559
Purchased power	84,912	65,428
Other operation and maintenance	57,950	48,336
Taxes other than income taxes	19,887	18,784
Depreciation and amortization	26,651	23,787
Other regulatory charges (credits) - net	(8,443)	(7,472)
TOTAL	254,518	233,422
OPERATING INCOME	37,123	28,338
OTHER INCOME
Allowance for equity funds used during construction	733	1,165
Interest and investment income	139	10
Miscellaneous - net	(858)	(1,055)
TOTAL	14	120
INTEREST EXPENSE
Interest expense	15,293	14,545
Allowance for borrowed funds used during construction	(455)	(616)
TOTAL	14,838	13,929
INCOME BEFORE INCOME TAXES	22,299	14,529
Income taxes	8,365	5,847
CONSOLIDATED NET INCOME	13,934	8,682
Preferred dividend requirements of subsidiaries	707	707
EARNINGS APPLICABLE TO COMMON STOCK	13,227	7,975
Entergy New Orleans
OPERATING REVENUES
Electric	113,963	100,584
Natural gas	32,503	28,572
TOTAL	146,466	129,156
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	28,863	27,682
Purchased power	60,159	47,231
Other operation and maintenance	31,233	30,896
Taxes other than income taxes	12,246	10,548
Depreciation and amortization	9,443	9,069
Other regulatory charges (credits) - net	250	480
TOTAL	142,194	125,906
OPERATING INCOME	4,272	3,250
OTHER INCOME
Allowance for equity funds used during construction	170	149
Interest and investment income	21	15
Miscellaneous - net	(316)	(405)
TOTAL	(125)	(241)
INTEREST EXPENSE
Interest expense	3,203	2,833
Allowance for borrowed funds used during construction	(86)	(71)
TOTAL	3,117	2,762
INCOME BEFORE INCOME TAXES	1,030	247
Income taxes	(277)	207
CONSOLIDATED NET INCOME	1,307	40
Preferred dividend requirements of subsidiaries	241	241
EARNINGS APPLICABLE TO COMMON STOCK	1,066	(201)
Entergy Texas [Member]
OPERATING REVENUES
Electric	306,173	326,924
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	(26,100)	44,038
Purchased power	192,719	152,123
Other operation and maintenance	56,490	55,823
Taxes other than income taxes	14,650	15,794
Depreciation and amortization	23,360	20,727
Other regulatory charges (credits) - net	18,777	13,356
TOTAL	279,896	301,861
OPERATING INCOME	26,277	25,063
OTHER INCOME
Allowance for equity funds used during construction	759	1,089
Interest and investment income	347	1,460
Miscellaneous - net	(858)	(795)
TOTAL	248	1,754
INTEREST EXPENSE
Interest expense	23,181	23,810
Allowance for borrowed funds used during construction	(555)	(726)
TOTAL	22,626	23,084
INCOME BEFORE INCOME TAXES	3,899	3,733
Income taxes	2,977	1,988
CONSOLIDATED NET INCOME	922	1,745
System Energy [Member]
OPERATING REVENUES
Electric	168,578	126,034
Operating and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	21,517	10,361
Nuclear refueling outage expenses	7,357	4,164
Other operation and maintenance	39,941	34,284
Decommissioning	8,631	8,034
Taxes other than income taxes	6,489	5,513
Depreciation and amortization	35,416	29,674
Other regulatory charges (credits) - net	(2,825)	(1,452)
TOTAL	116,526	90,578
OPERATING INCOME	52,052	35,456
OTHER INCOME
Allowance for equity funds used during construction	1,471	9,469
Interest and investment income	2,677	3,526
Miscellaneous - net	(168)	(157)
TOTAL	3,980	12,838
INTEREST EXPENSE
Interest expense	9,204	10,849
Allowance for borrowed funds used during construction	(178)	(2,777)
TOTAL	9,026	8,072
INCOME BEFORE INCOME TAXES	47,006	40,222
Income taxes	19,000	13,686
CONSOLIDATED NET INCOME	$ 28,006	$ 26,536