Consolidated Statements Of Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING REVENUES
Electric		$ 9,308,678	$ 9,591,902	$ 8,942,360
Natural gas		142,746	181,794	154,353
Competitive businesses		2,061,827	2,721,225	2,294,234
TOTAL		11,513,251	12,494,921	11,390,947
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		2,452,171	2,632,558	2,445,818
Purchased power		1,390,805	1,915,414	1,554,332
Nuclear refueling outage expenses		251,316	267,679	256,801
Operation and maintenance expense		3,354,981	3,310,536	3,331,934
Asset Write-Offs, Impairments, And Related Charges		2,104,906	179,752	341,537
Decommissioning		280,272	272,621	242,104
Taxes other than income taxes		619,422	604,606	600,350
Depreciation and amortization		1,337,276	1,318,638	1,261,044
Other regulatory charges (credits) - net		175,304	(13,772)	45,597
TOTAL		11,966,453	10,488,032	10,079,517
Gain on sale of asset / business		154,037	0	43,569
OPERATING INCOME (LOSS)		(299,165)	2,006,889	1,354,999
OTHER INCOME
Allowance for equity funds used during construction		51,908	64,802	66,053
Interest and investment income		187,062	147,686	199,300
Miscellaneous - net		(95,997)	(42,016)	(59,762)
TOTAL		142,973	170,472	205,591
INTEREST EXPENSE
Interest expense		670,096	661,083	629,537
Allowance for borrowed funds used during construction		(26,627)	(33,576)	(25,500)
TOTAL		643,469	627,507	604,037
INCOME (LOSS) BEFORE INCOME TAXES		(799,661)	1,549,854	956,553
Income taxes (benefit)		(642,927)	589,597	225,981
CONSOLIDATED NET INCOME (LOSS)	[1]	(156,734)	960,257	730,572
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		19,828	19,536	18,670
NET INCOME		$ (176,562)	$ 940,721	$ 711,902
Earnings (loss) per average common share:
Basic (in usd per share)		$ (0.99)	$ 5.24	$ 3.99
Diluted (in usd per share)		$ (0.99)	$ 5.22	$ 3.99
Basic average number of common shares outstanding		179,176,356	179,506,151	178,211,192
Diluted average number of common shares outstanding		179,176,356	180,296,885	178,570,400
Entergy Arkansas [Member]
OPERATING REVENUES
Electric		$ 2,253,564	$ 2,172,391	$ 2,190,159
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		535,919	327,695	426,316
Purchased power		380,081	528,815	473,326
Nuclear refueling outage expenses		51,411	43,258	40,499
Operation and maintenance expense		734,118	647,461	592,892
Decommissioning		50,414	46,972	43,058
Taxes other than income taxes		99,926	91,470	89,471
Depreciation and amortization		246,897	236,770	230,512
Other regulatory charges (credits) - net		(24,608)	(20,054)	(10,975)
TOTAL		2,074,158	1,902,387	1,885,099
OPERATING INCOME (LOSS)		179,406	270,004	305,060
OTHER INCOME
Allowance for equity funds used during construction		14,227	7,238	10,913
Interest and investment income		22,382	23,075	30,148
Miscellaneous - net		(3,385)	(5,144)	(4,275)
TOTAL		33,224	25,169	36,786
INTEREST EXPENSE
Interest expense		105,622	93,921	91,318
Allowance for borrowed funds used during construction		(7,805)	(3,769)	(3,207)
TOTAL		97,817	90,152	88,111
INCOME (LOSS) BEFORE INCOME TAXES		114,813	205,021	253,735
Income taxes (benefit)		40,541	83,629	91,787
CONSOLIDATED NET INCOME (LOSS)		74,272	121,392	161,948
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		6,873	6,873	6,873
NET INCOME		67,399	114,519	155,075
Entergy Louisiana [Member]
OPERATING REVENUES
Electric		4,361,524	4,668,814	4,340,273
Natural gas		55,622	71,690	59,238
TOTAL		4,417,146	4,740,504	4,399,511
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		850,869	1,029,793	857,581
Purchased power		1,129,910	1,508,104	1,414,052
Nuclear refueling outage expenses		44,480	51,790	54,911
Operation and maintenance expense		997,546	907,308	878,755
Decommissioning		43,445	41,493	37,520
Taxes other than income taxes		167,966	159,594	154,548
Depreciation and amortization		437,036	408,073	393,716
Other regulatory charges (credits) - net		27,562	(43,484)	5,697
TOTAL		3,698,814	4,062,671	3,796,780
OPERATING INCOME (LOSS)		718,332	677,833	602,731
OTHER INCOME
Allowance for equity funds used during construction		19,192	46,240	39,606
Interest and investment income		150,168	134,885	144,552
Miscellaneous - net		(13,190)	850	(15,557)
TOTAL		156,170	181,975	168,601
INTEREST EXPENSE
Interest expense		259,894	253,455	234,647
Allowance for borrowed funds used during construction		(10,702)	(24,721)	(16,137)
TOTAL		249,192	228,734	218,510
INCOME (LOSS) BEFORE INCOME TAXES		625,310	631,074	552,822
Income taxes (benefit)		178,671	185,052	138,696
CONSOLIDATED NET INCOME (LOSS)		446,639	446,022	414,126
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		5,737	7,796	7,775
NET INCOME		440,902	438,226	406,351
Entergy Mississippi [Member]
OPERATING REVENUES
Electric		1,396,985	1,524,193	1,334,540
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		291,666	325,643	328,934
Purchased power		389,950	493,533	375,745
Operation and maintenance expense		261,255	256,339	261,832
Write-Off Of Regulatory Asset For New Nuclear		0	56,225	0
Taxes other than income taxes		94,152	87,936	83,630
Depreciation and amortization		129,029	113,903	108,714
Other regulatory charges (credits) - net		19,027	3,854	(14,545)
TOTAL		1,185,079	1,337,433	1,144,310
OPERATING INCOME (LOSS)		211,906	186,760	190,230
OTHER INCOME
Allowance for equity funds used during construction		3,095	2,380	2,182
Interest and investment income		195	1,055	817
Miscellaneous - net		(4,418)	(3,905)	(3,821)
TOTAL		(1,128)	(470)	(822)
INTEREST EXPENSE
Interest expense		57,842	57,002	59,031
Allowance for borrowed funds used during construction		(1,644)	(1,243)	(1,539)
TOTAL		56,198	55,759	57,492
INCOME (LOSS) BEFORE INCOME TAXES		154,580	130,531	131,916
Income taxes (benefit)		61,872	55,710	49,757
CONSOLIDATED NET INCOME (LOSS)		92,708	74,821	82,159
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		2,828	2,828	2,828
NET INCOME		89,880	71,993	79,331
Entergy New Orleans [Member]
OPERATING REVENUES
Electric		584,322	625,088	564,631
Natural gas		87,124	110,104	95,115
TOTAL		671,446	735,192	659,746
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		96,307	178,347	123,662
Purchased power		277,851	271,159	263,318
Operation and maintenance expense		119,087	131,549	146,754
Taxes other than income taxes		46,660	49,964	50,431
Depreciation and amortization		43,205	45,426	43,990
Other regulatory charges (credits) - net		3,366	791	821
TOTAL		586,476	677,236	628,976
OPERATING INCOME (LOSS)		84,970	57,956	30,770
OTHER INCOME
Allowance for equity funds used during construction		1,404	1,750	1,598
Interest and investment income		73	95	100
Miscellaneous - net		339	614	(1,483)
TOTAL		1,816	2,459	215
INTEREST EXPENSE
Interest expense		17,312	16,820	16,892
Allowance for borrowed funds used during construction		(641)	(885)	(792)
TOTAL		16,671	15,935	16,100
INCOME (LOSS) BEFORE INCOME TAXES		70,115	44,480	14,885
Income taxes (benefit)		25,190	13,450	2,277
CONSOLIDATED NET INCOME (LOSS)		44,925	31,030	12,608
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable		965	965	965
NET INCOME		43,960	30,065	11,643
Entergy Texas [Member]
OPERATING REVENUES
Electric		1,707,203	1,851,982	1,728,799
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		277,810	282,809	207,310
Purchased power		709,947	881,438	857,512
Operation and maintenance expense		254,731	232,955	253,786
Asset Write-Offs, Impairments, And Related Charges		23,472	0	0
Taxes other than income taxes		72,945	70,439	63,823
Depreciation and amortization		102,410	99,609	94,744
Other regulatory charges (credits) - net		82,243	76,017	77,491
TOTAL		1,523,558	1,643,267	1,554,666
OPERATING INCOME (LOSS)		183,645	208,715	174,133
OTHER INCOME
Allowance for equity funds used during construction		5,678	2,959	4,647
Interest and investment income		684	1,106	1,369
Miscellaneous - net		(798)	(2,345)	(3,328)
TOTAL		5,564	1,720	2,688
INTEREST EXPENSE
Interest expense		86,024	88,049	92,156
Allowance for borrowed funds used during construction		(3,690)	(2,062)	(3,324)
TOTAL		82,334	85,987	88,832
INCOME (LOSS) BEFORE INCOME TAXES		106,875	124,448	87,989
Income taxes (benefit)		37,250	49,644	30,108
CONSOLIDATED NET INCOME (LOSS)		69,625	74,804	57,881
System Energy [Member]
OPERATING REVENUES
Electric		632,405	664,364	735,089
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale		89,598	84,658	103,358
Nuclear refueling outage expenses		21,654	23,309	29,551
Operation and maintenance expense		156,552	156,502	174,772
Decommissioning		47,993	41,835	35,472
Taxes other than income taxes		27,281	25,160	25,537
Depreciation and amortization		143,133	142,583	176,387
Other regulatory charges (credits) - net		(39,434)	(30,799)	(13,068)
TOTAL		446,777	443,248	532,009
OPERATING INCOME (LOSS)		185,628	221,116	203,080
OTHER INCOME
Allowance for equity funds used during construction		8,494	5,069	7,784
Interest and investment income		14,437	11,037	9,844
Miscellaneous - net		(876)	(529)	(804)
TOTAL		22,055	15,577	16,824
INTEREST EXPENSE
Interest expense		45,532	58,384	38,173
Allowance for borrowed funds used during construction		(2,244)	(1,335)	(786)
TOTAL		43,288	57,049	37,387
INCOME (LOSS) BEFORE INCOME TAXES		164,395	179,644	182,517
Income taxes (benefit)		53,077	83,310	68,853
CONSOLIDATED NET INCOME (LOSS)		$ 111,318	$ 96,334	$ 113,664

[1] (a) Consolidated net income and preferred dividend requirements of subsidiaries for 2015, 2014, and 2013 include $14.9 million, $12.9 million, and $12 million, respectively, of preferred dividends on subsidiaries’ preferred stock without sinking fund that is not presented as equity.