Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash and cash equivalents:
Cash	$ 56,690	$ 56,629
Temporary cash investments	424,285	724,644
Total cash and cash equivalents	480,975	781,273	$ 1,187,844	$ 1,350,961
Accounts receivable:
Customer	558,494	673,347
Allowance for doubtful accounts	(7,322)	(13,587)
Other	167,722	169,377
Accrued unbilled revenues	395,511	383,813
Total accounts receivable	1,114,405	1,212,950
Deferred fuel costs	27,251	95,746
Fuel inventory - at average cost	117,304	182,643
Public Utilities, Inventory	752,843	723,222
Deferred nuclear refueling outage costs	230,960	133,164
Prepayments and other	234,326	156,333
TOTAL	2,958,064	3,285,331
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	0	198
Decommissioning trust funds	6,920,164	7,211,993
Non-utility property - at cost (less accumulated depreciation)	304,382	260,980
Other	437,265	441,862
TOTAL	7,661,811	7,915,033
PROPERTY, PLANT, AND EQUIPMENT
Electric	49,196,578	47,287,370
Property under capital lease	634,908	620,544
Natural gas	496,150	453,162
Construction work in progress	2,888,639	1,980,508
Nuclear fuel	861,272	923,200
TOTAL PROPERTY, PLANT AND EQUIPMENT	54,077,547	51,264,784
Less - accumulated depreciation and amortization	22,103,101	21,600,424
PROPERTY, PLANT AND EQUIPMENT - NET	31,974,446	29,664,360
Regulatory assets:
Regulatory Assets, Noncurrent	4,746,496	4,935,689
Deferred Fuel Cost Non Current	239,496	239,298
Goodwill	377,172	377,172
Deferred Income Tax Assets, Net	54,593	178,204
Other	262,988	112,062
Deferred Costs and Other Assets	5,680,745	5,842,425
TOTAL ASSETS	48,275,066	46,707,149
CURRENT LIABILITIES
Currently maturing long-term debt	650,009	760,007
Short-term borrowings	1,942,339	1,578,308
Accounts payable	1,496,058	1,452,216
Customer deposits	411,505	401,330
Taxes accrued	254,241	214,967
Interest accrued	193,192	187,972
Deferred fuel costs	52,396	146,522
Obligations under capital leases	1,617	1,502
Pension and other postretirement liabilities	61,240	71,612
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	248,127	0
Other	132,820	221,771
TOTAL	5,443,544	5,036,207
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	4,107,152	4,466,503
Accumulated deferred investment tax credits	213,101	219,634
Regulatory liability for income taxes - net	1,817,021	2,900,204
Obligations under capital leases	20,378	22,015
Other regulatory liabilities	1,620,254	1,588,520
Decommissioning trust fund	6,355,543	6,185,814
Loss Contingency Accrual	514,107	478,273
Pension and other postretirement liabilities	2,616,085	2,910,654
Long-term debt	15,518,303	14,315,259
Deferred Credits and Other Liabilities	985,871	393,748
TOTAL	33,767,815	33,480,624
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	219,402	197,803
COMMON EQUITY
Common stock	2,616	2,548
Additional Paid in Capital, Common Stock	5,951,431	5,433,433
Retained Earnings (Accumulated Deficit)	8,721,150	7,977,702
Accumulated other comprehensive loss	(557,173)	(23,531)	(34,971)
Less - treasury stock, at cost (76,681,936 shares in 2013 and 76,945,239 shares in 2012)	5,273,719	5,397,637
TOTAL	8,844,305	7,992,515	8,081,809	9,256,791
TOTAL LIABILITIES AND EQUITY	48,275,066	46,707,149
Entergy New Orleans [Member]
Cash and cash equivalents:
Cash	26	30
Temporary cash investments	19,651	32,711
Total cash and cash equivalents	19,677	32,741	103,068	88,876
Restricted Investments, Current	2,224	1,455
Accounts receivable:
Customer	43,890	51,006
Allowance for doubtful accounts	(3,222)	(3,057)
Associated companies	27,938	22,976
Other	4,090	6,471
Accrued unbilled revenues	18,907	20,638
Total accounts receivable	91,603	98,034
Fuel inventory - at average cost	1,533	1,890
Public Utilities, Inventory	12,133	10,381
Prepaid taxes	0	26,479
Prepayments and other	6,905	8,030
TOTAL	134,075	179,010
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	1,016	1,016
Storm reserve escrow account	80,853	79,546
Other	0	2,373
TOTAL	81,869	82,935
PROPERTY, PLANT, AND EQUIPMENT
Electric	1,364,091	1,302,235
Natural gas	284,728	261,263
Construction work in progress	146,668	46,993
TOTAL PROPERTY, PLANT AND EQUIPMENT	1,795,487	1,610,491
Less - accumulated depreciation and amortization	670,135	631,178
PROPERTY, PLANT AND EQUIPMENT - NET	1,125,352	979,313
Regulatory assets:
Regulatory Assets, Noncurrent	229,796	251,433
Deferred Fuel Cost Non Current	4,080	4,080
Other	1,416	1,065
Deferred Costs and Other Assets	235,292	256,578
TOTAL ASSETS	1,576,588	1,497,836
CURRENT LIABILITIES
Currently maturing long-term debt	1,979	2,077
Notes Payable, Related Parties, Current	1,979	2,077
Associated companies accounts payable	43,416	47,472
Accounts payable	36,686	29,777
Customer deposits	28,667	28,442
Taxes accrued	4,068	0
Interest accrued	6,366	5,487
Deferred fuel costs	1,288	7,774
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	25,301	0
Other	9,521	7,351
TOTAL	157,292	128,380
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	323,595	283,302
Accumulated deferred investment tax credits	2,219	2,323
Regulatory liability for income taxes - net	60,249	119,259
Decommissioning trust fund	3,291	3,076
Loss Contingency Accrual	86,594	85,083
Pension and other postretirement liabilities	5,626	20,755
Long-term debt	467,358	418,447
Notes Payable, Related Parties, Noncurrent	14,367	16,346
Deferred Credits and Other Liabilities	11,047	5,317
TOTAL	974,346	953,908
Commitments and Contingencies
COMMON EQUITY
Members' Equity	444,950	415,548
TOTAL	444,950	415,548	426,946	350,032
TOTAL LIABILITIES AND EQUITY	1,576,588	1,497,836
Entergy Louisiana [Member]
Cash and cash equivalents:
Cash	252	5,836
Temporary cash investments	43,112	30,071
Total cash and cash equivalents	43,364	35,907	213,850	35,102
Accounts receivable:
Customer	199,903	254,308
Allowance for doubtful accounts	(1,813)	(8,430)
Associated companies	123,363	143,524
Other	60,879	60,893
Accrued unbilled revenues	167,052	153,118
Total accounts receivable	549,384	603,413
Fuel inventory - at average cost	34,418	39,728
Public Utilities, Inventory	324,627	299,881
Deferred nuclear refueling outage costs	24,406	65,711
Prepayments and other	38,715	34,035
TOTAL	1,014,914	1,078,675
Investments in and Advances to Affiliates, at Fair Value	1,390,587	1,390,587
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	1,284,996	1,312,073
Non-utility property - at cost (less accumulated depreciation)	286,555	245,255
Storm reserve escrow account	289,525	284,759
Other	14,927	18,999
TOTAL	3,266,590	3,251,673
PROPERTY, PLANT, AND EQUIPMENT
Electric	20,532,312	19,678,536
Natural gas	211,421	191,899
Construction work in progress	1,864,582	1,281,452
Nuclear fuel	298,022	337,402
TOTAL PROPERTY, PLANT AND EQUIPMENT	22,906,337	21,489,289
Less - accumulated depreciation and amortization	8,837,596	8,703,047
PROPERTY, PLANT AND EQUIPMENT - NET	14,068,741	12,786,242
Regulatory assets:
Regulatory Assets, Noncurrent	1,105,077	1,145,842
Deferred Fuel Cost Non Current	168,122	168,122
Other	28,371	18,310
Deferred Costs and Other Assets	1,301,570	1,332,274
TOTAL ASSETS	19,651,815	18,448,864
CURRENT LIABILITIES
Currently maturing long-term debt	2	675,002
Short-term borrowings	0	43,540
Associated companies accounts payable	102,749	126,685
Accounts payable	390,367	404,374
Customer deposits	155,314	150,623
Taxes accrued	30,868	18,157
Interest accrued	83,450	75,528
Deferred fuel costs	31,411	71,447
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	31,457	0
Other	49,202	79,037
TOTAL	874,820	1,644,393
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	2,226,721	2,050,371
Accumulated deferred investment tax credits	116,999	121,870
Regulatory liability for income taxes - net	581,001	725,368
Other regulatory liabilities	748,784	761,059
Decommissioning trust fund	1,280,272	1,140,461
Loss Contingency Accrual	310,755	302,448
Pension and other postretirement liabilities	643,171	748,384
Long-term debt	6,805,766	5,469,069
Deferred Credits and Other Liabilities	160,608	176,637
TOTAL	12,874,077	11,495,667
Commitments and Contingencies
COMMON EQUITY
Accumulated other comprehensive loss	(6,153)	(46,400)
Members' Equity	5,909,071	5,355,204
TOTAL	5,902,918	5,308,804	5,081,809	4,737,312
TOTAL LIABILITIES AND EQUITY	19,651,815	18,448,864
Entergy Arkansas [Member]
Cash and cash equivalents:
Cash	118	6,184
Temporary cash investments	1	32
Total cash and cash equivalents	119	6,216	20,509	9,135
Restricted Investments, Current	4,666	3,748
Accounts receivable:
Customer	94,348	110,016
Allowance for doubtful accounts	(1,264)	(1,063)
Associated companies	48,184	38,765
Other	64,393	65,209
Accrued unbilled revenues	108,092	105,120
Total accounts receivable	313,753	318,047
Deferred fuel costs	19,235	63,302
Fuel inventory - at average cost	23,148	29,358
Public Utilities, Inventory	196,314	192,853
Deferred nuclear refueling outage costs	78,966	56,485
Prepayments and other	14,553	12,108
TOTAL	650,754	682,117
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	912,049	944,890
Other	5,480	3,160
TOTAL	917,529	948,050
PROPERTY, PLANT, AND EQUIPMENT
Electric	11,611,041	11,059,538
Construction work in progress	243,731	280,888
Nuclear fuel	220,602	277,345
TOTAL PROPERTY, PLANT AND EQUIPMENT	12,075,374	11,617,771
Less - accumulated depreciation and amortization	4,864,818	4,762,352
PROPERTY, PLANT AND EQUIPMENT - NET	7,210,556	6,855,419
Regulatory assets:
Regulatory Assets, Noncurrent	1,534,977	1,567,437
Deferred Fuel Cost Non Current	67,294	67,096
Other	20,486	13,910
Deferred Costs and Other Assets	1,622,757	1,648,443
TOTAL ASSETS	10,401,596	10,134,029
CURRENT LIABILITIES
Currently maturing long-term debt	0	0
Short-term borrowings	0	49,974
Associated companies accounts payable	251,768	365,915
Accounts payable	187,387	215,942
Customer deposits	99,053	97,687
Taxes accrued	56,889	47,321
Interest accrued	18,893	18,215
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	99,316	0
Other	23,943	29,922
TOTAL	737,249	824,976
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	1,085,545	1,190,669
Accumulated deferred investment tax credits	32,903	34,104
Regulatory liability for income taxes - net	505,748	985,823
Other regulatory liabilities	402,668	363,591
Decommissioning trust fund	1,048,428	981,213
Loss Contingency Accrual	48,979	34,729
Pension and other postretirement liabilities	313,295	353,274
Long-term debt	3,225,759	2,952,399
Deferred Credits and Other Liabilities	17,919	5,147
TOTAL	6,681,244	6,900,949
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	0	31,350
COMMON EQUITY
Members' Equity	2,983,103	2,376,754
TOTAL	2,983,103	2,376,754	2,253,317	1,891,658
TOTAL LIABILITIES AND EQUITY	10,401,596	10,134,029
Entergy Mississippi [Member]
Cash and cash equivalents:
Cash	11	1,607
Temporary cash investments	36,943	4,489
Total cash and cash equivalents	36,954	6,096	76,834	145,605
Accounts receivable:
Customer	73,205	72,039
Allowance for doubtful accounts	(563)	(574)
Associated companies	51,065	45,081
Other	8,647	9,738
Accrued unbilled revenues	50,171	54,256
Total accounts receivable	182,525	180,540
Deferred fuel costs	8,016	32,444
Fuel inventory - at average cost	11,931	45,606
Public Utilities, Inventory	47,255	42,571
Prepayments and other	9,365	7,041
TOTAL	296,046	314,298
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	4,576	4,592
Escrow accounts	32,447	31,969
TOTAL	37,023	36,561
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,780,720	4,660,297
Property under capital lease	0	125
Construction work in progress	128,149	149,367
TOTAL PROPERTY, PLANT AND EQUIPMENT	4,908,869	4,809,789
Less - accumulated depreciation and amortization	1,641,821	1,681,306
PROPERTY, PLANT AND EQUIPMENT - NET	3,267,048	3,128,483
Regulatory assets:
Regulatory Assets, Noncurrent	343,049	397,909
Other	3,638	2,124
Deferred Costs and Other Assets	346,687	400,033
TOTAL ASSETS	3,946,804	3,879,375
CURRENT LIABILITIES
Currently maturing long-term debt	150,000	0
Associated companies accounts payable	42,928	55,689
Accounts payable	79,117	77,326
Customer deposits	85,085	83,654
Taxes accrued	77,552	82,843
Interest accrued	20,231	22,901
Other	7,526	12,785
TOTAL	462,439	335,198
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	551,869	488,806
Accumulated deferred investment tax credits	10,186	8,867
Regulatory liability for income taxes - net	246,402	411,011
Other regulatory liabilities	33,622	869
Decommissioning trust fund	9,206	9,219
Loss Contingency Accrual	51,142	44,764
Pension and other postretirement liabilities	93,100	101,498
Long-term debt	1,175,750	1,270,122
Deferred Credits and Other Liabilities	20,862	10,770
TOTAL	2,192,139	2,345,926
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	0	20,381
COMMON EQUITY
Members' Equity	1,292,226	1,177,870
TOTAL	1,292,226	1,177,870	1,094,791	1,012,050
TOTAL LIABILITIES AND EQUITY	3,946,804	3,879,375
Entergy Texas [Member]
Cash and cash equivalents:
Cash	26	32
Temporary cash investments	30	115,481
Total cash and cash equivalents	56	115,513	6,181	2,182
Restricted Investments, Current	40,185	37,683
Accounts receivable:
Customer	69,714	74,382
Allowance for doubtful accounts	(461)	(463)
Associated companies	64,441	90,629
Other	12,275	9,831
Accrued unbilled revenues	51,288	50,682
Total accounts receivable	197,257	225,061
Fuel inventory - at average cost	42,667	42,731
Public Utilities, Inventory	41,883	38,605
Prepayments and other	15,903	19,710
TOTAL	337,951	479,303
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	448	457
Non-utility property - at cost (less accumulated depreciation)	376	376
Other	19,218	19,235
TOTAL	20,042	20,068
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,773,984	4,569,295
Construction work in progress	325,193	102,088
TOTAL PROPERTY, PLANT AND EQUIPMENT	5,099,177	4,671,383
Less - accumulated depreciation and amortization	1,684,569	1,579,387
PROPERTY, PLANT AND EQUIPMENT - NET	3,414,608	3,091,996
Regulatory assets:
Regulatory Assets, Noncurrent	598,048	661,398
Other	29,371	26,973
Deferred Costs and Other Assets	627,419	688,371
TOTAL ASSETS	4,400,020	4,279,738
CURRENT LIABILITIES
Currently maturing long-term debt	500,000	0
Associated companies accounts payable	119,371	59,347
Accounts payable	150,679	126,095
Customer deposits	43,387	40,925
Taxes accrued	53,513	45,659
Interest accrued	24,355	25,556
Deferred fuel costs	19,697	67,301
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	87,627	0
Other	6,353	8,132
TOTAL	1,004,982	373,015
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	552,535	544,642
Accumulated deferred investment tax credits	11,176	11,983
Regulatory liability for income taxes - net	264,623	412,620
Other regulatory liabilities	47,884	6,850
Decommissioning trust fund	7,222	6,835
Loss Contingency Accrual	13,856	10,115
Pension and other postretirement liabilities	4,834	17,853
Long-term debt	1,013,735	1,587,150
Deferred Credits and Other Liabilities	56,771	48,508
TOTAL	1,972,636	2,646,556
Commitments and Contingencies
COMMON EQUITY
Common stock	49,452	49,452
Additional Paid in Capital, Common Stock	596,994	596,994
Retained Earnings (Accumulated Deficit)	775,956	613,721
TOTAL	1,422,402	1,260,167	1,068,994	961,456
TOTAL LIABILITIES AND EQUITY	4,400,020	4,279,738
System Energy [Member]
Cash and cash equivalents:
Cash	68	78
Temporary cash investments	95,617	287,109
Total cash and cash equivalents	95,685	287,187	245,863	230,661
Accounts receivable:
Associated companies	148,571	170,149
Other	5,390	6,526
Total accounts receivable	153,961	176,675
Public Utilities, Inventory	97,225	88,424
Deferred nuclear refueling outage costs	44,424	7,908
Prepaid taxes	5,415	0
Prepayments and other	2,985	2,489
TOTAL	399,695	562,683
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	869,543	905,686
TOTAL	869,543	905,686
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,433,346	4,327,849
Property under capital lease	602,770	588,281
Construction work in progress	70,156	69,937
Nuclear fuel	234,889	207,513
TOTAL PROPERTY, PLANT AND EQUIPMENT	5,341,161	5,193,580
Less - accumulated depreciation and amortization	3,212,080	3,175,018
PROPERTY, PLANT AND EQUIPMENT - NET	2,129,081	2,018,562
Regulatory assets:
Regulatory Assets, Noncurrent	446,371	444,327
Other	4,124	7,629
Deferred Costs and Other Assets	450,495	451,956
TOTAL ASSETS	3,848,814	3,938,887
CURRENT LIABILITIES
Currently maturing long-term debt	6	85,004
Short-term borrowings	0	17,830
Associated companies accounts payable	11,031	16,878
Accounts payable	47,565	62,868
Taxes accrued	0	46,584
Interest accrued	13,295	13,389
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	4,426	0
Other	2,832	2,434
TOTAL	79,155	244,987
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	805,296	776,420
Accumulated deferred investment tax credits	38,673	39,406
Regulatory liability for income taxes - net	158,998	246,122
Other regulatory liabilities	381,887	455,991
Decommissioning trust fund	896,000	861,664
Pension and other postretirement liabilities	98,639	121,874
Long-term debt	630,744	466,484
Deferred Credits and Other Liabilities	22,224	15,130
TOTAL	3,032,461	2,983,091
Commitments and Contingencies
COMMON EQUITY
Common stock	601,850	658,350
Retained Earnings (Accumulated Deficit)	135,348	52,459
TOTAL	737,198	710,809	$ 738,823	$ 781,079
TOTAL LIABILITIES AND EQUITY	$ 3,848,814	$ 3,938,887