Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Cash and cash equivalents:
Cash	$ 118,384	$ 56,690
Temporary cash investments	865,112	424,285
Total cash and cash equivalents	983,496	480,975
Securitization recovery trust account	52,000	51,000
Accounts receivable:
Customer	589,519	558,494
Allowance for doubtful accounts	(7,458)	(7,322)
Other	158,293	167,722
Accrued unbilled revenues	334,355	395,511
Total accounts receivable	1,074,709	1,114,405
Deferred fuel costs	19,209	27,251
Fuel inventory - at average cost	121,705	117,304
Public Utilities, Inventory	771,707	752,843
Deferred nuclear refueling outage costs	231,628	230,960
Prepaid Expense and Other Assets, Current	205,322	234,326
TOTAL	3,407,776	2,958,064
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	6,877,865	6,920,164
Non-utility property - at cost (less accumulated depreciation)	310,215	304,382
Other	439,849	437,265
TOTAL	7,627,929	7,661,811
PROPERTY, PLANT, AND EQUIPMENT
Electric	50,260,871	49,831,486
Natural gas	509,987	496,150
Construction work in progress	3,289,734	2,888,639
Nuclear fuel	790,398	861,272
TOTAL PROPERTY, PLANT, AND EQUIPMENT	54,850,990	54,077,547
Less - accumulated depreciation and amortization	22,198,769	22,103,101
PROPERTY, PLANT, AND EQUIPMENT - NET	32,652,221	31,974,446
Regulatory assets:
Other regulatory assets	4,908,688	4,746,496
Deferred Fuel Cost Non Current	239,595	239,496
Goodwill	377,172	377,172
Deferred Income Tax Assets, Net	61,255	54,593
Other	330,745	262,988
Deferred Costs and Other Assets	5,917,455	5,680,745
TOTAL ASSETS	49,605,381	48,275,066
CURRENT LIABILITIES
Currently maturing long-term debt	150,010	650,009
Short-term borrowings	1,942,322	1,942,339
Accounts payable	1,406,327	1,496,058
Customer deposits	409,433	411,505
Taxes Payable, Current	210,156	254,241
Interest accrued	172,645	193,192
Deferred fuel costs	64,653	52,396
Pension and other postretirement liabilities	62,218	61,240
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	239,664	248,127
Other	203,655	134,437
TOTAL	4,861,083	5,443,544
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	4,252,292	4,107,152
Accumulated deferred investment tax credits	211,013	213,101
Regulatory liability for income taxes - net	1,737,479	1,817,021
Other regulatory liabilities	1,839,183	1,620,254
Decommissioning and asset retirement cost liabilities	6,577,180	6,355,543
Loss Contingency Accrual	527,866	514,107
Pension and other postretirement liabilities	2,607,394	2,616,085
Long-term debt	17,167,886	15,518,303
Deferred Credits and Other Liabilities	634,211	1,006,249
TOTAL	35,554,504	33,767,815
Subsidiaries' preferred stock without sinking fund	219,427	219,402
Common Shareholders' Equity:
Common Stock, Value, Issued	2,616	2,616
Additional Paid in Capital, Common Stock	5,920,183	5,951,431
Accumulated other comprehensive loss	(551,152)	(557,173)
Less - treasury stock, at cost	5,211,182	5,273,719
TOTAL	8,970,367	8,844,305
Retained Earnings (Accumulated Deficit)	8,809,902	8,721,150
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	49,605,381	48,275,066
Entergy Arkansas [Member]
Cash and cash equivalents:
Cash	746	118
Temporary cash investments	189,495	1
Total cash and cash equivalents	190,241	119
Securitization recovery trust account	8,218	4,666
Accounts receivable:
Customer	130,054	94,348
Allowance for doubtful accounts	(1,455)	(1,264)
Associated companies	63,023	48,184
Other	43,548	64,393
Accrued unbilled revenues	86,910	108,092
Total accounts receivable	322,080	313,753
Deferred fuel costs	0	19,235
Fuel inventory - at average cost	22,888	23,148
Public Utilities, Inventory	205,601	196,314
Deferred nuclear refueling outage costs	60,689	78,966
Prepaid Expense and Other Assets, Current	10,073	14,553
TOTAL	819,790	650,754
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	997,263	912,049
Other	5,478	5,480
TOTAL	1,002,741	917,529
PROPERTY, PLANT, AND EQUIPMENT
Electric	11,744,151	11,611,041
Construction work in progress	304,981	243,731
Nuclear fuel	171,038	220,602
TOTAL PROPERTY, PLANT, AND EQUIPMENT	12,220,170	12,075,374
Less - accumulated depreciation and amortization	4,865,283	4,864,818
PROPERTY, PLANT, AND EQUIPMENT - NET	7,354,887	7,210,556
Regulatory assets:
Other regulatory assets	1,591,240	1,534,977
Deferred Fuel Cost Non Current	67,393	67,294
Other	26,292	20,486
Deferred Costs and Other Assets	1,684,925	1,622,757
TOTAL ASSETS	10,862,343	10,401,596
CURRENT LIABILITIES
Associated companies accounts payable	47,717	251,768
Accounts payable	140,708	187,387
Customer deposits	99,380	99,053
Taxes Payable, Current	46,273	56,889
Interest accrued	31,554	18,893
Deferred fuel costs	25,790	0
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	100,594	99,316
Other	39,020	23,943
TOTAL	531,036	737,249
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	1,131,314	1,085,545
Accumulated deferred investment tax credits	32,602	32,903
Regulatory liability for income taxes - net	467,198	505,748
Other regulatory liabilities	493,326	402,668
Decommissioning and asset retirement cost liabilities	1,190,346	1,048,428
Loss Contingency Accrual	58,909	48,979
Pension and other postretirement liabilities	312,361	313,295
Long-term debt	3,555,152	3,225,759
Deferred Credits and Other Liabilities	67,875	17,919
TOTAL	7,309,083	6,681,244
Common Shareholders' Equity:
Members' Equity	3,022,224	2,983,103
TOTAL	3,022,224	2,983,103
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	10,862,343	10,401,596
Entergy Louisiana [Member]
Cash and cash equivalents:
Cash	68,144	252
Temporary cash investments	237,019	43,112
Total cash and cash equivalents	305,163	43,364
Securitization recovery trust account	9,000	3,600
Accounts receivable:
Customer	219,503	199,903
Allowance for doubtful accounts	(1,912)	(1,813)
Associated companies	106,149	123,363
Other	73,120	60,879
Accrued unbilled revenues	144,493	167,052
Total accounts receivable	541,353	549,384
Deferred fuel costs	19,209	0
Fuel inventory - at average cost	34,387	34,418
Public Utilities, Inventory	328,666	324,627
Deferred nuclear refueling outage costs	61,384	24,406
Prepaid Expense and Other Assets, Current	38,550	38,715
TOTAL	1,328,712	1,014,914
Investments in and Advances to Affiliates, at Fair Value	1,390,587	1,390,587
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	1,408,045	1,284,996
Non-utility property - at cost (less accumulated depreciation)	292,380	286,555
Storm Reserve Escrow Account	291,176	289,525
Other	15,085	14,927
TOTAL	3,397,273	3,266,590
PROPERTY, PLANT, AND EQUIPMENT
Electric	20,614,483	20,532,312
Natural gas	218,502	211,421
Construction work in progress	1,997,965	1,864,582
Nuclear fuel	329,778	298,022
TOTAL PROPERTY, PLANT, AND EQUIPMENT	23,160,728	22,906,337
Less - accumulated depreciation and amortization	8,827,954	8,837,596
PROPERTY, PLANT, AND EQUIPMENT - NET	14,332,774	14,068,741
Regulatory assets:
Other regulatory assets	1,196,567	1,105,077
Deferred Fuel Cost Non Current	168,122	168,122
Other	32,729	28,371
Deferred Costs and Other Assets	1,397,418	1,301,570
TOTAL ASSETS	20,456,177	19,651,815
CURRENT LIABILITIES
Currently maturing long-term debt	2	2
Associated companies accounts payable	82,848	102,749
Accounts payable	380,874	390,367
Customer deposits	154,573	155,314
Taxes Payable, Current	47,179	30,868
Interest accrued	74,150	83,450
Deferred fuel costs	0	31,411
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	33,343	31,457
Other	59,002	49,202
TOTAL	831,971	874,820
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	2,280,532	2,226,721
Accumulated deferred investment tax credits	115,782	116,999
Regulatory liability for income taxes - net	561,864	581,001
Other regulatory liabilities	815,387	748,784
Decommissioning and asset retirement cost liabilities	1,296,647	1,280,272
Loss Contingency Accrual	313,717	310,755
Pension and other postretirement liabilities	641,132	643,171
Long-term debt	7,377,910	6,805,766
Deferred Credits and Other Liabilities	240,664	160,608
TOTAL	13,643,635	12,874,077
Common Shareholders' Equity:
Accumulated other comprehensive loss	(7,122)	(6,153)
Members' Equity	5,987,693	5,909,071
TOTAL	5,980,571	5,902,918
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	20,456,177	19,651,815
Entergy Mississippi [Member]
Cash and cash equivalents:
Cash	878	11
Temporary cash investments	7	36,943
Total cash and cash equivalents	885	36,954
Accounts receivable:
Customer	71,621	73,205
Allowance for doubtful accounts	(647)	(563)
Associated companies	3,641	51,065
Other	7,678	8,647
Accrued unbilled revenues	40,488	50,171
Total accounts receivable	122,781	182,525
Deferred fuel costs	0	8,016
Fuel inventory - at average cost	16,198	11,931
Public Utilities, Inventory	49,576	47,255
Prepaid Expense and Other Assets, Current	4,043	9,365
TOTAL	193,483	296,046
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	4,572	4,576
Escrow accounts	32,629	32,447
TOTAL	37,201	37,023
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,834,942	4,780,720
Construction work in progress	182,618	128,149
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,017,560	4,908,869
Less - accumulated depreciation and amortization	1,667,543	1,641,821
PROPERTY, PLANT, AND EQUIPMENT - NET	3,350,017	3,267,048
Regulatory assets:
Other regulatory assets	346,527	343,049
Other	9,878	3,638
Deferred Costs and Other Assets	356,405	346,687
TOTAL ASSETS	3,937,106	3,946,804
CURRENT LIABILITIES
Currently maturing long-term debt	150,000	150,000
Associated companies accounts payable	53,027	42,928
Accounts payable	74,694	79,117
Customer deposits	85,830	85,085
Taxes Payable, Current	11,107	77,552
Interest accrued	19,938	20,231
Deferred fuel costs	9,619	0
Other	15,111	7,526
TOTAL	419,326	462,439
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	566,047	551,869
Accumulated deferred investment tax credits	10,146	10,186
Regulatory liability for income taxes - net	244,123	246,402
Other regulatory liabilities	26,600	33,622
Decommissioning and asset retirement cost liabilities	9,333	9,206
Loss Contingency Accrual	50,296	51,142
Pension and other postretirement liabilities	93,324	93,100
Long-term debt	1,175,915	1,175,750
Deferred Credits and Other Liabilities	34,372	20,862
TOTAL	2,210,156	2,192,139
Common Shareholders' Equity:
Members' Equity	1,307,624	1,292,226
TOTAL	1,307,624	1,292,226
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	3,937,106	3,946,804
Entergy New Orleans [Member]
Cash and cash equivalents:
Cash	794	26
Temporary cash investments	0	19,651
Total cash and cash equivalents	794	19,677
Securitization recovery trust account	5,075	2,224
Accounts receivable:
Customer	47,422	43,890
Allowance for doubtful accounts	(3,033)	(3,222)
Associated companies	2,054	27,938
Other	7,115	4,090
Accrued unbilled revenues	16,049	18,907
Total accounts receivable	69,607	91,603
Fuel inventory - at average cost	4	1,533
Public Utilities, Inventory	11,989	12,133
Prepaid Expense and Other Assets, Current	17,250	6,905
TOTAL	104,719	134,075
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	1,016	1,016
Storm Reserve Escrow Account	81,305	80,853
TOTAL	82,321	81,869
PROPERTY, PLANT, AND EQUIPMENT
Electric	1,358,401	1,364,091
Natural gas	291,484	284,728
Construction work in progress	184,527	146,668
TOTAL PROPERTY, PLANT, AND EQUIPMENT	1,834,412	1,795,487
Less - accumulated depreciation and amortization	675,943	670,135
PROPERTY, PLANT, AND EQUIPMENT - NET	1,158,469	1,125,352
Regulatory assets:
Other regulatory assets	246,324	229,796
Deferred Fuel Cost Non Current	4,080	4,080
Other	1,991	1,416
Deferred Costs and Other Assets	252,395	235,292
TOTAL ASSETS	1,597,904	1,576,588
CURRENT LIABILITIES
Notes Payable, Related Parties, Current	1,979	1,979
Associated companies accounts payable	44,433	43,416
Accounts payable	48,308	36,686
Customer deposits	28,683	28,667
Taxes Payable, Current	0	4,068
Interest accrued	7,016	6,366
Deferred fuel costs	1,217	1,288
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	25,220	25,301
Other	6,611	9,521
TOTAL	163,467	157,292
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	334,694	323,595
Accumulated deferred investment tax credits	2,197	2,219
Regulatory liability for income taxes - net	57,233	60,249
Decommissioning and asset retirement cost liabilities	3,347	3,291
Loss Contingency Accrual	87,048	86,594
Pension and other postretirement liabilities	3,920	5,626
Long-term debt	467,498	467,358
Notes Payable, Related Parties, Noncurrent	14,367	14,367
Deferred Credits and Other Liabilities	10,160	11,047
TOTAL	980,464	974,346
Common Shareholders' Equity:
Members' Equity	453,973	444,950
TOTAL	453,973	444,950
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,597,904	1,576,588
Entergy Texas [Member]
Cash and cash equivalents:
Cash	26	26
Temporary cash investments	22,203	30
Total cash and cash equivalents	22,229	56
Securitization recovery trust account	29,461	40,185
Accounts receivable:
Customer	63,194	69,714
Allowance for doubtful accounts	(412)	(461)
Associated companies	16,273	64,441
Other	9,964	12,275
Accrued unbilled revenues	46,415	51,288
Total accounts receivable	135,434	197,257
Fuel inventory - at average cost	42,840	42,667
Public Utilities, Inventory	43,560	41,883
Prepaid Expense and Other Assets, Current	11,231	15,903
TOTAL	284,755	337,951
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	436	448
Non-utility property - at cost (less accumulated depreciation)	376	376
Other	19,433	19,218
TOTAL	20,245	20,042
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,804,948	4,773,984
Construction work in progress	450,207	325,193
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,255,155	5,099,177
Less - accumulated depreciation and amortization	1,694,292	1,684,569
PROPERTY, PLANT, AND EQUIPMENT - NET	3,560,863	3,414,608
Regulatory assets:
Other regulatory assets	596,690	598,048
Other	31,171	29,371
Deferred Costs and Other Assets	627,861	627,419
TOTAL ASSETS	4,493,724	4,400,020
CURRENT LIABILITIES
Currently maturing long-term debt	0	500,000
Associated companies accounts payable	48,588	119,371
Accounts payable	158,286	150,679
Customer deposits	40,967	43,387
Taxes Payable, Current	44,048	53,513
Interest accrued	19,717	24,355
Deferred fuel costs	28,028	19,697
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	73,112	87,627
Other	9,233	6,353
TOTAL	421,979	1,004,982
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	543,550	552,535
Accumulated deferred investment tax credits	11,021	11,176
Regulatory liability for income taxes - net	254,771	264,623
Other regulatory liabilities	47,886	47,884
Decommissioning and asset retirement cost liabilities	7,322	7,222
Loss Contingency Accrual	14,930	13,856
Pension and other postretirement liabilities	3,699	4,834
Long-term debt	1,680,966	1,013,735
Deferred Credits and Other Liabilities	63,856	56,771
TOTAL	2,628,001	1,972,636
Common Shareholders' Equity:
Common Stock, Value, Issued	49,452	49,452
Additional Paid in Capital, Common Stock	596,994	596,994
Retained Earnings (Accumulated Deficit)	797,298	775,956
TOTAL	1,443,744	1,422,402
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,493,724	4,400,020
System Energy [Member]
Cash and cash equivalents:
Cash	57	68
Temporary cash investments	158,244	95,617
Total cash and cash equivalents	158,301	95,685
Accounts receivable:
Associated companies	74,667	148,571
Other	5,272	5,390
Total accounts receivable	79,939	153,961
Public Utilities, Inventory	101,609	97,225
Deferred nuclear refueling outage costs	36,624	44,424
Prepaid Expense and Other Assets, Current	2,764	2,985
Prepaid Taxes	18,990	5,415
TOTAL	398,227	399,695
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	951,334	869,543
TOTAL	951,334	869,543
PROPERTY, PLANT, AND EQUIPMENT
Electric	5,027,651	5,036,116
Construction work in progress	82,554	70,156
Nuclear fuel	195,023	234,889
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,305,228	5,341,161
Less - accumulated depreciation and amortization	3,226,329	3,212,080
PROPERTY, PLANT, AND EQUIPMENT - NET	2,078,899	2,129,081
Regulatory assets:
Other regulatory assets	450,101	446,371
Other	3,992	4,124
Deferred Costs and Other Assets	454,093	450,495
TOTAL ASSETS	3,882,553	3,848,814
CURRENT LIABILITIES
Currently maturing long-term debt	8	6
Associated companies accounts payable	7,596	11,031
Accounts payable	39,660	47,565
Interest accrued	10,145	13,295
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	7,396	4,426
Other	2,830	2,832
TOTAL	67,635	79,155
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	813,026	805,296
Accumulated deferred investment tax credits	38,354	38,673
Regulatory liability for income taxes - net	152,289	158,998
Other regulatory liabilities	456,112	381,887
Decommissioning and asset retirement cost liabilities	904,800	896,000
Pension and other postretirement liabilities	98,958	98,639
Long-term debt	610,790	630,744
Deferred Credits and Other Liabilities	25,313	22,224
TOTAL	3,099,642	3,032,461
Common Shareholders' Equity:
Common Stock, Value, Issued	601,850	601,850
Retained Earnings (Accumulated Deficit)	113,426	135,348
TOTAL	715,276	737,198
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 3,882,553	$ 3,848,814