Consolidated Statements Of Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
OPERATING REVENUES
Electric		$ 9,278,895	$ 8,866,659	$ 9,308,678
Natural gas		138,856	129,348	142,746
Competitive businesses		1,656,730	1,849,638	2,061,827
TOTAL		11,074,481	10,845,645	11,513,251
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		1,991,589	1,809,200	2,452,171
Purchased power		1,427,950	1,220,527	1,390,805
Nuclear refueling outage expenses		168,151	208,678	251,316
Operation and maintenance expense		3,423,689	3,296,711	3,354,981
Asset Write-Offs, Impairments, And Related Charges		538,372	2,835,637	2,104,906
Decommissioning		405,685	327,425	280,272
Taxes other than income taxes		617,556	592,502	619,422
Depreciation and amortization		1,389,978	1,347,187	1,337,276
Other regulatory charges (credits) - net		(131,901)	94,243	175,304
TOTAL		9,831,069	11,732,110	11,966,453
Gain on sale of asset		16,270	0	154,037
OPERATING INCOME (LOSS)		1,259,682	(886,465)	(299,165)
OTHER INCOME
Allowance for equity funds used during construction		95,088	67,563	51,908
Investment Income, Net		288,197	145,127	187,062
Miscellaneous - net		(12,701)	(41,617)	(95,997)
TOTAL		370,584	171,073	142,973
INTEREST EXPENSE
Interest expense		707,212	700,545	670,096
Allowance for borrowed funds used during construction		(44,869)	(34,175)	(26,627)
TOTAL		662,343	666,370	643,469
INCOME (LOSS) BEFORE INCOME TAXES		967,923	(1,381,762)	(799,661)
Income Tax Expense (Benefit)		542,570	(817,259)	(642,927)
CONSOLIDATED NET INCOME (LOSS)	[1]	425,353	(564,503)	(156,734)
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		13,741	19,115	19,828
NET INCOME		$ 411,612	$ (583,618)	$ (176,562)
Earnings (loss) per average common share:
Basic (in usd per share)		$ 2.29	$ (3.26)	$ (0.99)
Diluted (in usd per share)		$ 2.28	$ (3.26)	$ (0.99)
Basic average number of common shares outstanding		179,671,797	178,885,660	179,176,356
Diluted average number of common shares outstanding		180,535,893	178,885,660	179,176,356
Entergy Arkansas [Member]
OPERATING REVENUES
Electric		$ 2,139,919	$ 2,086,608	$ 2,253,564
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		402,777	325,036	535,919
Purchased power		230,652	233,350	380,081
Nuclear refueling outage expenses		83,968	56,650	51,411
Operation and maintenance expense		707,825	706,573	734,118
Decommissioning		56,860	53,610	50,414
Taxes other than income taxes		103,662	93,109	99,926
Depreciation and amortization		277,146	264,215	246,897
Other regulatory charges (credits) - net		(16,074)	7,737	(24,608)
TOTAL		1,846,816	1,740,280	2,074,158
OPERATING INCOME (LOSS)		293,103	346,328	179,406
OTHER INCOME
Allowance for equity funds used during construction		18,452	17,099	14,227
Investment Income, Net		35,882	19,087	22,382
Miscellaneous - net		(299)	(1,446)	(3,385)
TOTAL		54,035	34,740	33,224
INTEREST EXPENSE
Interest expense		122,075	115,311	105,622
Allowance for borrowed funds used during construction		(8,585)	(9,228)	(7,805)
TOTAL		113,490	106,083	97,817
INCOME (LOSS) BEFORE INCOME TAXES		233,648	274,985	114,813
Income Tax Expense (Benefit)		93,804	107,773	40,541
CONSOLIDATED NET INCOME (LOSS)		139,844	167,212	74,272
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		1,428	5,270	6,873
NET INCOME		138,416	161,942	67,399
Entergy Louisiana [Member]
OPERATING REVENUES
Electric		4,246,020	4,126,343	4,361,524
Natural gas		54,530	50,705	55,622
TOTAL		4,300,550	4,177,048	4,417,146
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		912,060	804,433	850,869
Purchased power		980,070	890,058	1,129,910
Nuclear refueling outage expenses		52,074	51,361	44,480
Operation and maintenance expense		969,400	923,779	997,546
Decommissioning		49,457	46,944	43,445
Taxes other than income taxes		175,359	165,665	167,966
Depreciation and amortization		467,369	451,290	437,036
Other regulatory charges (credits) - net		(152,080)	44,131	27,562
TOTAL		3,453,709	3,377,661	3,698,814
OPERATING INCOME (LOSS)		846,841	799,387	718,332
OTHER INCOME
Allowance for equity funds used during construction		51,485	27,925	19,192
Investment Income, Net		164,550	154,778	150,168
Miscellaneous - net		(11,960)	(11,597)	(13,190)
TOTAL		204,075	171,106	156,170
INTEREST EXPENSE
Interest expense		275,185	273,283	259,894
Allowance for borrowed funds used during construction		(25,914)	(14,571)	(10,702)
TOTAL		249,271	258,712	249,192
INCOME (LOSS) BEFORE INCOME TAXES		801,645	711,781	625,310
Income Tax Expense (Benefit)		485,298	89,734	178,671
CONSOLIDATED NET INCOME (LOSS)		316,347	622,047	446,639
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		0	0	5,737
NET INCOME		316,347	622,047	440,902
Entergy Mississippi [Member]
OPERATING REVENUES
Electric		1,198,229	1,094,649	1,396,985
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		185,816	95,090	291,666
Purchased power		328,463	297,902	389,950
Operation and maintenance expense		243,480	250,443	261,255
Taxes other than income taxes		95,051	94,482	94,152
Depreciation and amortization		143,479	136,214	129,029
Other regulatory charges (credits) - net		(19,134)	(3,721)	19,027
TOTAL		977,155	870,410	1,185,079
OPERATING INCOME (LOSS)		221,074	224,239	211,906
OTHER INCOME
Allowance for equity funds used during construction		9,667	5,801	3,095
Investment Income, Net		85	656	195
Miscellaneous - net		510	(3,531)	(4,418)
TOTAL		10,262	2,926	(1,128)
INTEREST EXPENSE
Interest expense		51,260	57,114	57,842
Allowance for borrowed funds used during construction		(3,875)	(2,987)	(1,644)
TOTAL		47,385	54,127	56,198
INCOME (LOSS) BEFORE INCOME TAXES		183,951	173,038	154,580
Income Tax Expense (Benefit)		73,919	63,854	61,872
CONSOLIDATED NET INCOME (LOSS)		110,032	109,184	92,708
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		953	2,443	2,828
NET INCOME		109,079	106,741	89,880
Entergy New Orleans [Member]
OPERATING REVENUES
Electric		631,744	586,820	584,322
Natural gas		84,326	78,643	87,124
TOTAL		716,070	665,463	671,446
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		111,082	40,489	96,307
Purchased power		282,178	299,551	277,851
Operation and maintenance expense		109,270	117,471	119,087
Taxes other than income taxes		54,590	48,078	46,660
Depreciation and amortization		52,945	51,737	43,205
Other regulatory charges (credits) - net		10,889	8,258	3,366
TOTAL		620,954	565,584	586,476
OPERATING INCOME (LOSS)		95,116	99,879	84,970
OTHER INCOME
Allowance for equity funds used during construction		2,418	1,178	1,404
Investment Income, Net		707	256	73
Miscellaneous - net		24	(3,144)	339
TOTAL		3,149	(1,710)	1,816
INTEREST EXPENSE
Interest expense		21,281	21,061	17,312
Allowance for borrowed funds used during construction		(847)	(446)	(641)
TOTAL		20,434	20,615	16,671
INCOME (LOSS) BEFORE INCOME TAXES		77,831	77,554	70,115
Income Tax Expense (Benefit)		33,278	28,705	25,190
CONSOLIDATED NET INCOME (LOSS)		44,553	48,849	44,925
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		841	965	965
NET INCOME		43,712	47,884	43,960
Entergy Texas [Member]
OPERATING REVENUES
Electric		1,544,893	1,615,619	1,707,203
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		225,517	271,968	277,810
Purchased power		610,279	616,597	709,947
Operation and maintenance expense		230,616	220,566	254,731
Asset Write-Offs, Impairments, And Related Charges		0	0	23,472
Taxes other than income taxes		79,254	70,973	72,945
Depreciation and amortization		117,520	107,026	102,410
Other regulatory charges (credits) - net		82,328	82,879	82,243
TOTAL		1,345,514	1,370,009	1,523,558
OPERATING INCOME (LOSS)		199,379	245,610	183,645
OTHER INCOME
Allowance for equity funds used during construction		6,722	7,617	5,678
Investment Income, Net		981	987	684
Miscellaneous - net		193	(746)	(798)
TOTAL		7,896	7,858	5,564
INTEREST EXPENSE
Interest expense		86,719	87,776	86,024
Allowance for borrowed funds used during construction		(4,098)	(4,943)	(3,690)
TOTAL		82,621	82,833	82,334
INCOME (LOSS) BEFORE INCOME TAXES		124,654	170,635	106,875
Income Tax Expense (Benefit)		48,481	63,097	37,250
CONSOLIDATED NET INCOME (LOSS)		76,173	107,538	69,625
System Energy [Member]
OPERATING REVENUES
Electric		633,458	548,291	632,405
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		71,700	27,416	89,598
Nuclear refueling outage expenses		17,968	19,512	21,654
Operation and maintenance expense		213,534	153,064	156,552
Decommissioning		43,347	50,797	47,993
Taxes other than income taxes		26,180	25,195	27,281
Depreciation and amortization		137,767	136,195	143,133
Other regulatory charges (credits) - net		(37,831)	(45,041)	(39,434)
TOTAL		472,665	367,138	446,777
OPERATING INCOME (LOSS)		160,793	181,153	185,628
OTHER INCOME
Allowance for equity funds used during construction		6,345	7,944	8,494
Investment Income, Net		17,538	14,793	14,437
Miscellaneous - net		(521)	(556)	(876)
TOTAL		23,362	22,181	22,055
INTEREST EXPENSE
Interest expense		37,141	37,529	45,532
Allowance for borrowed funds used during construction		(1,551)	(2,000)	(2,244)
TOTAL		35,590	35,529	43,288
INCOME (LOSS) BEFORE INCOME TAXES		148,565	167,805	164,395
Income Tax Expense (Benefit)		69,969	71,061	53,077
CONSOLIDATED NET INCOME (LOSS)		$ 78,596	$ 96,744	$ 111,318

[1] (a) Consolidated net income and preferred dividend requirements of subsidiaries include $13.7 million for 2017, $19.1 million for 2016, and $14.9 million for 2015 of preferred dividends on subsidiaries’ preferred stock without sinking fund that is not presented as equity.