Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Cash and cash equivalents:
Cash	$ 56,629	$ 129,579
Temporary cash investments	724,644	1,058,265
Total cash and cash equivalents	781,273	1,187,844
Accounts receivable:
Customer	673,347	654,995
Allowance for doubtful accounts	(13,587)	(11,924)
Other	169,377	158,419
Accrued unbilled revenues	383,813	368,677
Total accounts receivable	1,212,950	1,170,167
Deferred fuel costs	95,746	108,465
Fuel inventory - at average cost	182,643	179,600
Materials and supplies - at average cost	723,222	698,523
Deferred nuclear refueling outage costs	133,164	146,221
Prepayments and other	156,333	193,448
TOTAL	3,285,331	3,684,268
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	198	198
Decommissioning trust funds	7,211,993	5,723,897
Non-utility property - at cost (less accumulated depreciation)	260,980	233,641
Other	441,862	469,664
TOTAL	7,915,033	6,427,400
PROPERTY, PLANT, AND EQUIPMENT
Electric	47,287,370	45,191,216
Property under capital lease	620,544	619,527
Natural gas	453,162	413,224
Construction work in progress	1,980,508	1,378,180
Nuclear fuel	923,200	1,037,899
TOTAL PROPERTY, PLANT AND EQUIPMENT	51,264,784	48,640,046
Less - accumulated depreciation and amortization	21,600,424	20,718,639
PROPERTY, PLANT AND EQUIPMENT - NET	29,664,360	27,921,407
Regulatory assets:
Regulatory asset for income taxes - net	0	761,280
Regulatory Assets, Noncurrent	4,935,689	4,769,913
Deferred fuel costs	239,298	239,100
Goodwill	377,172	377,172
Accumulated deferred income taxes	178,204	117,885
Other	112,062	1,606,009
TOTAL	5,842,425	7,871,359
TOTAL ASSETS	46,707,149	45,904,434
CURRENT LIABILITIES
Currently maturing long-term debt	760,007	364,900
Notes payable	1,578,308	415,011
Accounts payable	1,452,216	1,285,577
Customer deposits	401,330	403,311
Taxes accrued	214,967	181,114
Interest accrued	187,972	187,229
Deferred fuel costs	146,522	102,753
Obligations under capital leases	1,502	2,423
Pension and other postretirement liabilities	71,612	76,942
Other	221,771	180,836
TOTAL	5,036,207	3,200,096
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	4,466,503	7,495,290
Accumulated deferred investment tax credits	219,634	227,147
Regulatory liability for income taxes - net	2,900,204	0
Obligations under capital leases	22,015	24,582
Other regulatory liabilities	1,588,520	1,572,929
Decommissioning trust fund	6,185,814	5,992,476
Accumulated provisions	478,273	481,636
Pension and other postretirement liabilities	2,910,654	3,036,010
Long-term debt	14,315,259	14,467,655
Other	393,748	1,121,619
TOTAL	33,480,624	34,419,344
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	197,803	203,185
COMMON EQUITY
Common stock	2,548	2,548
Paid-in capital	5,433,433	5,417,245
Retained earnings	7,977,702	8,195,571
Accumulated other comprehensive loss	(23,531)	(34,971)
Less - treasury stock, at cost (76,681,936 shares in 2013 and 76,945,239 shares in 2012)	5,397,637	5,498,584
TOTAL	7,992,515	8,081,809
TOTAL	7,992,515	8,081,809
TOTAL LIABILITIES AND EQUITY	46,707,149	45,904,434
Entergy Louisiana [Member]
Cash and cash equivalents:
Cash	5,836	49,972
Temporary cash investments	30,071	163,878
Total cash and cash equivalents	35,907	213,850
Accounts receivable:
Customer	254,308	213,517
Allowance for doubtful accounts	(8,430)	(6,277)
Associated companies	143,524	155,794
Other	60,893	54,186
Accrued unbilled revenues	153,118	159,176
Total accounts receivable	603,413	576,396
Fuel inventory - at average cost	39,728	50,738
Materials and supplies - at average cost	299,881	294,421
Deferred nuclear refueling outage costs	65,711	22,535
Prepaid taxes	0	110,104
Prepayments and other	34,035	41,687
TOTAL	1,078,675	1,309,731
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	1,390,587	1,390,587
Decommissioning trust funds	1,312,073	1,140,707
Non-utility property - at cost (less accumulated depreciation)	245,255	217,494
Storm reserve escrow account	284,759	291,485
Other	18,999	28,844
TOTAL	3,251,673	3,069,117
PROPERTY, PLANT, AND EQUIPMENT
Electric	19,678,536	18,827,532
Natural gas	191,899	172,816
Construction work in progress	1,281,452	670,201
Nuclear fuel	337,402	249,807
TOTAL PROPERTY, PLANT AND EQUIPMENT	21,489,289	19,920,356
Less - accumulated depreciation and amortization	8,703,047	8,420,596
PROPERTY, PLANT AND EQUIPMENT - NET	12,786,242	11,499,760
Regulatory assets:
Regulatory asset for income taxes - net	0	470,480
Regulatory Assets, Noncurrent	1,145,842	1,168,058
Deferred fuel costs	168,122	168,122
Other	18,310	16,003
TOTAL	1,332,274	1,822,663
Deferred fuel cost noncurrent	168,100	168,100
TOTAL ASSETS	18,448,864	17,701,271
CURRENT LIABILITIES
Currently maturing long-term debt	675,002	200,198
Short-term borrowings	43,540	3,794
Associated companies accounts payable	126,685	82,106
Other	404,374	358,741
Customer deposits	150,623	148,601
Taxes accrued	18,157	0
Interest accrued	75,528	75,598
Deferred fuel costs	71,447	48,211
Other	79,037	80,013
TOTAL	1,644,393	997,262
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	2,050,371	2,691,118
Accumulated deferred investment tax credits	121,870	126,741
Regulatory liability for income taxes - net	725,368	0
Other regulatory liabilities	761,059	880,974
Decommissioning trust fund	1,140,461	1,082,685
Accumulated provisions	302,448	310,772
Pension and other postretirement liabilities	748,384	780,278
Long-term debt	5,469,069	5,612,593
Other	176,637	137,039
TOTAL	11,495,667	11,622,200
Commitments and Contingencies
COMMON EQUITY
Accumulated other comprehensive loss	(46,400)	(48,442)
Members' Equity	5,355,204	5,130,251
TOTAL	5,308,804	5,081,809
TOTAL LIABILITIES AND EQUITY	18,448,864	17,701,271
Entergy Arkansas [Member]
Cash and cash equivalents:
Cash	6,184	20,174
Temporary cash investments	32	335
Total cash and cash equivalents	6,216	20,509
Securitization recovery trust account	3,748	4,140
Accounts receivable:
Customer	110,016	102,229
Allowance for doubtful accounts	(1,063)	(1,211)
Associated companies	38,765	35,286
Other	65,209	58,153
Accrued unbilled revenues	105,120	100,193
Total accounts receivable	318,047	294,650
Deferred fuel costs	63,302	96,690
Fuel inventory - at average cost	29,358	32,760
Materials and supplies - at average cost	192,853	182,600
Deferred nuclear refueling outage costs	56,485	81,313
Prepayments and other	12,108	14,293
TOTAL	682,117	726,955
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	944,890	834,735
Other	3,160	7,912
TOTAL	948,050	842,647
PROPERTY, PLANT, AND EQUIPMENT
Electric	11,059,538	10,488,060
Property under capital lease	0	716
Construction work in progress	280,888	304,073
Nuclear fuel	277,345	307,352
TOTAL PROPERTY, PLANT AND EQUIPMENT	11,617,771	11,100,201
Less - accumulated depreciation and amortization	4,762,352	4,635,885
PROPERTY, PLANT AND EQUIPMENT - NET	6,855,419	6,464,316
Regulatory assets:
Regulatory asset for income taxes - net	0	62,646
Regulatory Assets, Noncurrent	1,567,437	1,428,029
Deferred fuel costs	67,096	66,898
Other	13,910	14,626
TOTAL	1,648,443	1,572,199
Deferred fuel cost noncurrent	67,100	66,900
TOTAL ASSETS	10,134,029	9,606,117
CURRENT LIABILITIES
Currently maturing long-term debt	0	114,700
Short-term borrowings	49,974	0
Associated companies accounts payable	365,915	239,711
Other	215,942	185,153
Customer deposits	97,687	97,512
Taxes accrued	47,321	7,194
Interest accrued	18,215	16,580
Other	29,922	36,557
TOTAL	824,976	697,407
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	1,190,669	2,186,623
Accumulated deferred investment tax credits	34,104	35,305
Regulatory liability for income taxes - net	985,823	0
Other regulatory liabilities	363,591	305,907
Decommissioning trust fund	981,213	924,353
Accumulated provisions	34,729	18,682
Pension and other postretirement liabilities	353,274	424,234
Long-term debt	2,952,399	2,715,085
Other	5,147	13,854
TOTAL	6,900,949	6,624,043
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	31,350	31,350
COMMON EQUITY
Common stock	470	470
Paid-in capital	790,264	790,243
Retained earnings	1,586,020	1,462,604
TOTAL	2,376,754	2,253,317
TOTAL LIABILITIES AND EQUITY	10,134,029	9,606,117
Entergy Mississippi [Member]
Cash and cash equivalents:
Cash	1,607	16
Temporary cash investments	4,489	76,818
Total cash and cash equivalents	6,096	76,834
Accounts receivable:
Customer	72,039	51,218
Allowance for doubtful accounts	(574)	(549)
Associated companies	45,081	45,973
Other	9,738	12,006
Accrued unbilled revenues	54,256	51,327
Total accounts receivable	180,540	159,975
Deferred fuel costs	32,444	6,957
Fuel inventory - at average cost	45,606	50,872
Materials and supplies - at average cost	42,571	41,146
Prepayments and other	7,041	8,873
TOTAL	314,298	344,657
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	4,592	4,608
Escrow accounts	31,969	31,783
TOTAL	36,561	36,391
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,660,297	4,321,214
Property under capital lease	125	1,590
Construction work in progress	149,367	118,182
TOTAL PROPERTY, PLANT AND EQUIPMENT	4,809,789	4,440,986
Less - accumulated depreciation and amortization	1,681,306	1,602,711
PROPERTY, PLANT AND EQUIPMENT - NET	3,128,483	2,838,275
Regulatory assets:
Regulatory asset for income taxes - net	0	38,284
Regulatory Assets, Noncurrent	397,909	342,213
Other	2,124	2,320
TOTAL	400,033	382,817
TOTAL ASSETS	3,879,375	3,602,140
CURRENT LIABILITIES
Currently maturing long-term debt	0	0
Associated companies accounts payable	55,689	43,647
Other	77,326	80,227
Customer deposits	83,654	84,112
Taxes accrued	82,843	64,040
Interest accrued	22,901	21,653
Other	12,785	9,554
TOTAL	335,198	303,233
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	488,806	861,331
Accumulated deferred investment tax credits	8,867	8,667
Regulatory liability for income taxes - net	411,011	0
Decommissioning trust fund	9,219	8,722
Accumulated provisions	44,764	54,440
Pension and other postretirement liabilities	101,498	109,551
Long-term debt	1,270,122	1,120,916
Other	11,639	20,108
TOTAL	2,345,926	2,183,735
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	20,381	20,381
COMMON EQUITY
Common stock	199,326	199,326
Paid-in capital	167	167
Retained earnings	978,377	895,298
TOTAL	1,177,870	1,094,791
TOTAL LIABILITIES AND EQUITY	3,879,375	3,602,140
Entergy New Orleans [Member]
Cash and cash equivalents:
Cash	30	28
Temporary cash investments	32,711	103,040
Total cash and cash equivalents	32,741	103,068
Securitization recovery trust account	1,455	1,738
Accounts receivable:
Customer	51,006	43,536
Allowance for doubtful accounts	(3,057)	(3,059)
Associated companies	22,976	16,811
Other	6,471	5,926
Accrued unbilled revenues	20,638	18,254
Total accounts receivable	98,034	81,468
Deferred fuel costs	0	4,818
Fuel inventory - at average cost	1,890	1,841
Materials and supplies - at average cost	10,381	8,416
Prepaid taxes	26,479	4,379
Prepayments and other	8,030	6,587
TOTAL	179,010	212,315
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	1,016	1,016
Storm reserve escrow account	79,546	81,437
Other	2,373	7,160
TOTAL	82,935	89,613
PROPERTY, PLANT, AND EQUIPMENT
Electric	1,302,235	1,258,934
Natural gas	261,263	240,408
Construction work in progress	46,993	24,975
TOTAL PROPERTY, PLANT AND EQUIPMENT	1,610,491	1,524,317
Less - accumulated depreciation and amortization	631,178	604,825
PROPERTY, PLANT AND EQUIPMENT - NET	979,313	919,492
Regulatory assets:
Regulatory Assets, Noncurrent	251,433	268,106
Deferred fuel costs	4,080	4,080
Other	1,065	963
TOTAL	256,578	273,149
Deferred fuel cost noncurrent	4,100	4,100
TOTAL ASSETS	1,497,836	1,494,569
CURRENT LIABILITIES
Current payable due Entergy Louisiana	2,077	2,104
Associated companies accounts payable	47,472	39,260
Other	29,777	35,920
Customer deposits	28,442	28,667
Interest accrued	5,487	5,443
Deferred fuel costs	7,774	0
Other	7,351	11,415
TOTAL	128,380	122,809
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	283,302	334,953
Accumulated deferred investment tax credits	2,323	622
Regulatory liability for income taxes - net	119,259	9,074
Decommissioning trust fund	3,076	2,875
Accumulated provisions	85,083	88,513
Pension and other postretirement liabilities	20,755	36,750
Long-term debt	418,447	428,467
Non-Current Payable due Entergy Louisiana	16,346	18,423
Other	5,317	5,357
TOTAL	953,908	925,034
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	0	19,780
COMMON EQUITY
Members' Equity	415,548	426,946
TOTAL	415,548	426,946
TOTAL LIABILITIES AND EQUITY	1,497,836	1,494,569
Entergy Texas [Member]
Cash and cash equivalents:
Cash	32	1,216
Temporary cash investments	115,481	4,965
Total cash and cash equivalents	115,513	6,181
Securitization recovery trust account	37,683	37,451
Accounts receivable:
Customer	74,382	71,803
Allowance for doubtful accounts	(463)	(828)
Associated companies	90,629	39,447
Other	9,831	14,756
Accrued unbilled revenues	50,682	39,727
Total accounts receivable	225,061	164,905
Fuel inventory - at average cost	42,731	37,177
Materials and supplies - at average cost	38,605	36,631
Prepayments and other	19,710	18,599
TOTAL	479,303	300,944
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	457	600
Non-utility property - at cost (less accumulated depreciation)	376	376
Other	19,235	18,801
TOTAL	20,068	19,777
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,569,295	4,274,069
Construction work in progress	102,088	111,227
TOTAL PROPERTY, PLANT AND EQUIPMENT	4,671,383	4,385,296
Less - accumulated depreciation and amortization	1,579,387	1,526,057
PROPERTY, PLANT AND EQUIPMENT - NET	3,091,996	2,859,239
Regulatory assets:
Regulatory asset for income taxes - net	0	105,816
Regulatory Assets, Noncurrent	661,398	740,156
Other	26,973	7,149
TOTAL	688,371	853,121
TOTAL ASSETS	4,279,738	4,033,081
CURRENT LIABILITIES
Currently maturing long-term debt	0	0
Associated companies accounts payable	59,347	47,867
Other	126,095	77,342
Customer deposits	40,925	44,419
Taxes accrued	45,659	15,351
Interest accrued	25,556	25,977
Deferred fuel costs	67,301	54,543
Other	8,132	9,388
TOTAL	373,015	274,887
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	544,642	1,027,647
Accumulated deferred investment tax credits	11,983	12,934
Regulatory liability for income taxes - net	412,620	0
Other regulatory liabilities	6,850	8,502
Decommissioning trust fund	6,835	6,470
Accumulated provisions	10,115	7,584
Pension and other postretirement liabilities	17,853	67,313
Long-term debt	1,587,150	1,508,407
Other	48,508	50,343
TOTAL	2,646,556	2,689,200
Commitments and Contingencies
COMMON EQUITY
Common stock	49,452	49,452
Paid-in capital	596,994	481,994
Retained earnings	613,721	537,548
TOTAL	1,260,167	1,068,994
TOTAL LIABILITIES AND EQUITY	4,279,738	4,033,081
System Energy [Member]
Cash and cash equivalents:
Cash	78	786
Temporary cash investments	287,109	245,077
Total cash and cash equivalents	287,187	245,863
Accounts receivable:
Associated companies	170,149	104,390
Other	6,526	3,637
Total accounts receivable	176,675	108,027
Materials and supplies - at average cost	88,424	82,469
Deferred nuclear refueling outage costs	7,908	24,729
Prepayments and other	2,489	20,111
TOTAL	562,683	481,199
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	905,686	780,496
TOTAL	905,686	780,496
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,327,849	4,331,668
Property under capital lease	588,281	585,084
Construction work in progress	69,937	43,888
Nuclear fuel	207,513	259,635
TOTAL PROPERTY, PLANT AND EQUIPMENT	5,193,580	5,220,275
Less - accumulated depreciation and amortization	3,175,018	3,063,249
PROPERTY, PLANT AND EQUIPMENT - NET	2,018,562	2,157,026
Regulatory assets:
Regulatory asset for income taxes - net	0	93,127
Regulatory Assets, Noncurrent	444,327	411,212
Other	7,629	4,652
TOTAL	451,956	508,991
TOTAL ASSETS	3,938,887	3,927,712
CURRENT LIABILITIES
Currently maturing long-term debt	85,004	50,003
Short-term borrowings	17,830	66,893
Associated companies accounts payable	16,878	5,843
Other	62,868	50,558
Taxes accrued	46,584	0
Interest accrued	13,389	14,049
Other	2,434	2,957
TOTAL	244,987	190,303
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	776,420	1,112,865
Accumulated deferred investment tax credits	39,406	41,663
Regulatory liability for income taxes - net	246,122	0
Other regulatory liabilities	455,991	370,862
Decommissioning trust fund	861,664	854,202
Pension and other postretirement liabilities	121,874	117,850
Long-term debt	466,484	501,129
Other	15,130	15
TOTAL	2,983,091	2,998,586
Commitments and Contingencies
COMMON EQUITY
Common stock	658,350	679,350
Retained earnings	52,459	59,473
TOTAL	710,809	738,823
TOTAL LIABILITIES AND EQUITY	$ 3,938,887	$ 3,927,712