Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Cash and cash equivalents:
Cash	$ 61,200	$ 56,690
Temporary cash investments	574,709	424,285
Total cash and cash equivalents	635,909	480,975	$ 812,787	$ 781,273
Securitization recovery trust account	39,000	51,000
Accounts receivable:
Customer	653,027	558,494
Allowance for doubtful accounts	(6,965)	(7,322)
Other	130,483	167,722
Accrued unbilled revenues	458,079	395,511
Total accounts receivable	1,234,624	1,114,405
Deferred fuel costs	8,685	27,251
Fuel inventory - at average cost	130,650	117,304
Public Utilities, Inventory	787,068	752,843
Deferred nuclear refueling outage costs	219,269	230,960
Prepaid Expense and Other Assets, Current	267,303	234,326
TOTAL	3,283,508	2,958,064
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	7,069,264	6,920,164
Non-utility property - at cost (less accumulated depreciation)	324,366	304,382
Other	443,639	437,265
TOTAL	7,837,269	7,661,811
PROPERTY, PLANT, AND EQUIPMENT
Electric	52,015,373	49,831,486
Natural gas	517,044	496,150
Construction work in progress	2,678,681	2,888,639
Nuclear fuel	756,551	861,272
TOTAL PROPERTY, PLANT, AND EQUIPMENT	55,967,649	54,077,547
Less - accumulated depreciation and amortization	22,422,914	22,103,101
PROPERTY, PLANT, AND EQUIPMENT - NET	33,544,735	31,974,446
Regulatory assets:
Other regulatory assets	4,882,432	4,746,496
Deferred Fuel Cost Non Current	239,694	239,496
Goodwill	377,172	377,172
Deferred Income Tax Assets, Net	67,880	54,593
Other	333,055	262,988
Deferred Costs and Other Assets	5,900,233	5,680,745
TOTAL ASSETS	50,565,745	48,275,066
CURRENT LIABILITIES
Currently maturing long-term debt	150,010	650,009
Short-term borrowings	1,635,462	1,942,339
Accounts payable	1,412,607	1,496,058
Customer deposits	409,531	411,505
Taxes Payable, Current	216,055	254,241
Interest accrued	193,047	193,192
Deferred fuel costs	65,823	52,396
Pension and other postretirement liabilities	55,054	61,240
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	189,273	248,127
Other	195,746	134,437
TOTAL	4,522,608	5,443,544
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	4,391,250	4,107,152
Accumulated deferred investment tax credits	208,925	213,101
Regulatory liability for income taxes - net	1,726,770	1,817,021
Other regulatory liabilities	1,877,241	1,620,254
Decommissioning and asset retirement cost liabilities	6,788,363	6,355,543
Loss Contingency Accrual	518,721	514,107
Pension and other postretirement liabilities	2,556,238	2,616,085
Long-term debt	17,204,288	15,518,303
Deferred Credits and Other Liabilities	754,411	1,006,249
TOTAL	36,026,207	33,767,815
Subsidiaries' preferred stock without sinking fund	219,427	219,402
Common Shareholders' Equity:
Common Stock, Value, Issued	2,700	2,616
Additional Paid in Capital, Common Stock	6,539,533	5,951,431
Accumulated other comprehensive loss	(430,404)	(557,173)	(613,642)	(23,531)
Less - treasury stock, at cost	5,187,791	5,273,719
TOTAL	9,797,503	8,844,305	8,022,461	7,992,515
Retained Earnings (Accumulated Deficit)	8,873,465	8,721,150
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	50,565,745	48,275,066
Entergy Arkansas [Member]
Cash and cash equivalents:
Cash	2,795	118
Temporary cash investments	29,148	1
Total cash and cash equivalents	31,943	119	233,068	6,216
Securitization recovery trust account	3,831	4,666
Accounts receivable:
Customer	119,183	94,348
Allowance for doubtful accounts	(1,066)	(1,264)
Associated companies	56,244	48,184
Other	36,059	64,393
Accrued unbilled revenues	123,579	108,092
Total accounts receivable	333,999	313,753
Deferred fuel costs	0	19,235
Fuel inventory - at average cost	27,855	23,148
Public Utilities, Inventory	211,874	196,314
Deferred nuclear refueling outage costs	44,868	78,966
Prepaid Expense and Other Assets, Current	19,682	14,553
TOTAL	674,052	650,754
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	1,031,762	912,049
Other	5,477	5,480
TOTAL	1,037,239	917,529
PROPERTY, PLANT, AND EQUIPMENT
Electric	11,860,519	11,611,041
Construction work in progress	327,273	243,731
Nuclear fuel	202,998	220,602
TOTAL PROPERTY, PLANT, AND EQUIPMENT	12,390,790	12,075,374
Less - accumulated depreciation and amortization	4,926,197	4,864,818
PROPERTY, PLANT, AND EQUIPMENT - NET	7,464,593	7,210,556
Regulatory assets:
Other regulatory assets	1,592,493	1,534,977
Deferred Fuel Cost Non Current	67,492	67,294
Other	22,704	20,486
Deferred Costs and Other Assets	1,682,689	1,622,757
TOTAL ASSETS	10,858,573	10,401,596
CURRENT LIABILITIES
Associated companies accounts payable	68,185	251,768
Accounts payable	191,038	187,387
Customer deposits	100,284	99,053
Taxes Payable, Current	36,928	56,889
Interest accrued	23,048	18,893
Deferred fuel costs	37,145	0
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	75,139	99,316
Other	45,402	23,943
TOTAL	577,169	737,249
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	1,127,393	1,085,545
Accumulated deferred investment tax credits	32,302	32,903
Regulatory liability for income taxes - net	486,342	505,748
Other regulatory liabilities	517,209	402,668
Decommissioning and asset retirement cost liabilities	1,207,514	1,048,428
Loss Contingency Accrual	60,598	48,979
Pension and other postretirement liabilities	300,760	313,295
Long-term debt	3,527,146	3,225,759
Deferred Credits and Other Liabilities	64,617	17,919
TOTAL	7,323,881	6,681,244
Common Shareholders' Equity:
Members' Equity	2,957,523	2,983,103
TOTAL	2,957,523	2,983,103	2,844,851	2,376,754
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	10,858,573	10,401,596
Entergy Louisiana [Member]
Cash and cash equivalents:
Cash	252	252
Temporary cash investments	44,487	43,112
Total cash and cash equivalents	44,739	43,364	29,028	35,907
Securitization recovery trust account	3,200	3,600
Accounts receivable:
Customer	259,321	199,903
Allowance for doubtful accounts	(1,919)	(1,813)
Associated companies	109,752	123,363
Other	48,165	60,879
Accrued unbilled revenues	192,722	167,052
Total accounts receivable	608,041	549,384
Deferred fuel costs	8,685	0
Fuel inventory - at average cost	36,069	34,418
Public Utilities, Inventory	333,943	324,627
Deferred nuclear refueling outage costs	85,483	24,406
Prepaid Expense and Other Assets, Current	44,682	38,715
TOTAL	1,161,642	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	1,461,061	1,284,996
Non-utility property - at cost (less accumulated depreciation)	305,964	286,555
Storm Reserve Escrow Account	292,907	289,525
Other	15,302	14,927
TOTAL	3,465,821	3,266,590
PROPERTY, PLANT, AND EQUIPMENT
Electric	21,957,846	20,532,312
Natural gas	224,044	211,421
Construction work in progress	1,294,844	1,864,582
Nuclear fuel	302,982	298,022
TOTAL PROPERTY, PLANT, AND EQUIPMENT	23,779,716	22,906,337
Less - accumulated depreciation and amortization	8,907,647	8,837,596
PROPERTY, PLANT, AND EQUIPMENT - NET	14,872,069	14,068,741
Regulatory assets:
Other regulatory assets	1,193,988	1,105,077
Deferred Fuel Cost Non Current	168,122	168,122
Other	33,429	28,371
Deferred Costs and Other Assets	1,395,539	1,301,570
TOTAL ASSETS	20,895,071	19,651,815
CURRENT LIABILITIES
Currently maturing long-term debt	2	2
Associated companies accounts payable	87,090	102,749
Accounts payable	330,748	390,367
Customer deposits	153,705	155,314
Taxes Payable, Current	77,522	30,868
Interest accrued	85,368	83,450
Deferred fuel costs	0	31,411
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	35,532	31,457
Other	76,596	49,202
TOTAL	846,563	874,820
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	2,334,983	2,226,721
Accumulated deferred investment tax credits	114,564	116,999
Regulatory liability for income taxes - net	545,272	581,001
Other regulatory liabilities	807,002	748,784
Decommissioning and asset retirement cost liabilities	1,460,783	1,280,272
Loss Contingency Accrual	312,367	310,755
Pension and other postretirement liabilities	635,488	643,171
Long-term debt	7,359,933	6,805,766
Deferred Credits and Other Liabilities	368,444	160,608
TOTAL	13,938,836	12,874,077
Common Shareholders' Equity:
Accumulated other comprehensive loss	(8,091)	(6,153)
Members' Equity	6,117,763	5,909,071
TOTAL	6,109,672	5,902,918	5,543,980	5,308,804
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	20,895,071	19,651,815
Entergy Mississippi [Member]
Cash and cash equivalents:
Cash	791	11
Temporary cash investments	123,657	36,943
Total cash and cash equivalents	124,448	36,954	18	6,096
Accounts receivable:
Customer	74,761	73,205
Allowance for doubtful accounts	(488)	(563)
Associated companies	112,850	51,065
Other	10,975	8,647
Accrued unbilled revenues	56,095	50,171
Total accounts receivable	254,193	182,525
Deferred fuel costs	0	8,016
Fuel inventory - at average cost	16,196	11,931
Public Utilities, Inventory	49,665	47,255
Prepaid Expense and Other Assets, Current	9,118	9,365
TOTAL	453,620	296,046
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	4,568	4,576
Escrow accounts	32,756	32,447
TOTAL	37,324	37,023
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,884,462	4,780,720
Construction work in progress	179,763	128,149
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,064,225	4,908,869
Less - accumulated depreciation and amortization	1,650,732	1,641,821
PROPERTY, PLANT, AND EQUIPMENT - NET	3,413,493	3,267,048
Regulatory assets:
Other regulatory assets	356,297	343,049
Other	12,799	3,638
Deferred Costs and Other Assets	369,096	346,687
TOTAL ASSETS	4,273,533	3,946,804
CURRENT LIABILITIES
Currently maturing long-term debt	150,000	150,000
Associated companies accounts payable	41,245	42,928
Accounts payable	82,727	79,117
Customer deposits	86,238	85,085
Taxes Payable, Current	30,737	77,552
Interest accrued	22,253	20,231
Deferred fuel costs	18,110	0
Other	18,057	7,526
TOTAL	449,367	462,439
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	576,233	551,869
Accumulated deferred investment tax credits	10,106	10,186
Regulatory liability for income taxes - net	241,939	246,402
Other regulatory liabilities	20,331	33,622
Decommissioning and asset retirement cost liabilities	9,463	9,206
Loss Contingency Accrual	44,868	51,142
Pension and other postretirement liabilities	89,688	93,100
Long-term debt	1,469,420	1,175,750
Deferred Credits and Other Liabilities	27,827	20,862
TOTAL	2,489,875	2,192,139
Common Shareholders' Equity:
Members' Equity	1,334,291	1,292,226
TOTAL	1,334,291	1,292,226	1,238,478	1,177,870
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,273,533	3,946,804
Entergy New Orleans [Member]
Cash and cash equivalents:
Cash	299	26
Temporary cash investments	0	19,651
Total cash and cash equivalents	299	19,677	26	32,741
Securitization recovery trust account	1,457	2,224
Accounts receivable:
Customer	53,204	43,890
Allowance for doubtful accounts	(3,063)	(3,222)
Associated companies	1,693	27,938
Other	6,219	4,090
Accrued unbilled revenues	21,148	18,907
Total accounts receivable	79,201	91,603
Fuel inventory - at average cost	1,869	1,533
Public Utilities, Inventory	12,276	12,133
Prepaid Expense and Other Assets, Current	18,501	6,905
TOTAL	113,603	134,075
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	1,016	1,016
Storm Reserve Escrow Account	81,784	80,853
TOTAL	82,800	81,869
PROPERTY, PLANT, AND EQUIPMENT
Electric	1,388,533	1,364,091
Natural gas	293,000	284,728
Construction work in progress	194,846	146,668
TOTAL PROPERTY, PLANT, AND EQUIPMENT	1,876,379	1,795,487
Less - accumulated depreciation and amortization	687,877	670,135
PROPERTY, PLANT, AND EQUIPMENT - NET	1,188,502	1,125,352
Regulatory assets:
Other regulatory assets	246,266	229,796
Deferred Fuel Cost Non Current	4,080	4,080
Other	2,919	1,416
Deferred Costs and Other Assets	253,265	235,292
TOTAL ASSETS	1,638,170	1,576,588
CURRENT LIABILITIES
Notes Payable, Related Parties, Current	1,979	1,979
Associated companies accounts payable	79,296	43,416
Accounts payable	37,871	36,686
Customer deposits	28,647	28,667
Taxes Payable, Current	0	4,068
Interest accrued	6,077	6,366
Deferred fuel costs	3,316	1,288
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	23,211	25,301
Other	7,835	9,521
TOTAL	188,232	157,292
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	342,071	323,595
Accumulated deferred investment tax credits	2,175	2,219
Regulatory liability for income taxes - net	54,707	60,249
Decommissioning and asset retirement cost liabilities	3,405	3,291
Loss Contingency Accrual	86,993	86,594
Pension and other postretirement liabilities	1,999	5,626
Long-term debt	462,168	467,358
Notes Payable, Related Parties, Noncurrent	14,367	14,367
Deferred Credits and Other Liabilities	15,077	11,047
TOTAL	982,962	974,346
Common Shareholders' Equity:
Members' Equity	466,976	444,950
TOTAL	466,976	444,950	430,199	415,548
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,638,170	1,576,588
Entergy Texas [Member]
Cash and cash equivalents:
Cash	1,816	26
Temporary cash investments	31	30
Total cash and cash equivalents	1,847	56	40,399	115,513
Securitization recovery trust account	30,159	40,185
Accounts receivable:
Customer	78,561	69,714
Allowance for doubtful accounts	(429)	(461)
Associated companies	19,121	64,441
Other	10,233	12,275
Accrued unbilled revenues	64,535	51,288
Total accounts receivable	172,021	197,257
Fuel inventory - at average cost	43,256	42,667
Public Utilities, Inventory	43,697	41,883
Prepaid Expense and Other Assets, Current	6,852	15,903
TOTAL	297,832	337,951
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	424	448
Non-utility property - at cost (less accumulated depreciation)	376	376
Other	19,647	19,218
TOTAL	20,447	20,042
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,958,751	4,773,984
Construction work in progress	514,289	325,193
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,473,040	5,099,177
Less - accumulated depreciation and amortization	1,716,977	1,684,569
PROPERTY, PLANT, AND EQUIPMENT - NET	3,756,063	3,414,608
Regulatory assets:
Other regulatory assets	569,306	598,048
Other	31,235	29,371
Deferred Costs and Other Assets	600,541	627,419
TOTAL ASSETS	4,674,883	4,400,020
CURRENT LIABILITIES
Currently maturing long-term debt	0	500,000
Associated companies accounts payable	215,725	119,371
Accounts payable	181,804	150,679
Customer deposits	40,657	43,387
Taxes Payable, Current	44,422	53,513
Interest accrued	16,568	24,355
Deferred fuel costs	7,252	19,697
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	55,391	87,627
Other	8,366	6,353
TOTAL	570,185	1,004,982
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	564,171	552,535
Accumulated deferred investment tax credits	10,867	11,176
Regulatory liability for income taxes - net	249,912	264,623
Other regulatory liabilities	44,014	47,884
Decommissioning and asset retirement cost liabilities	7,423	7,222
Loss Contingency Accrual	10,562	13,856
Pension and other postretirement liabilities	905	4,834
Long-term debt	1,664,936	1,013,735
Deferred Credits and Other Liabilities	69,228	56,771
TOTAL	2,622,018	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)	836,234	775,956
TOTAL	1,482,680	1,422,402	1,308,306	1,260,167
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,674,883	4,400,020
System Energy [Member]
Cash and cash equivalents:
Cash	1,109	68
Temporary cash investments	82,852	95,617
Total cash and cash equivalents	83,961	95,685	258,777	287,187
Accounts receivable:
Associated companies	128,409	148,571
Other	5,366	5,390
Total accounts receivable	133,775	153,961
Public Utilities, Inventory	103,902	97,225
Deferred nuclear refueling outage costs	28,129	44,424
Prepaid Expense and Other Assets, Current	11,399	2,985
Prepaid Taxes	8,611	5,415
TOTAL	369,777	399,695
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	986,761	869,543
TOTAL	986,761	869,543
PROPERTY, PLANT, AND EQUIPMENT
Electric	5,033,870	5,036,116
Construction work in progress	107,187	70,156
Nuclear fuel	167,886	234,889
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,308,943	5,341,161
Less - accumulated depreciation and amortization	3,249,715	3,212,080
PROPERTY, PLANT, AND EQUIPMENT - NET	2,059,228	2,129,081
Regulatory assets:
Other regulatory assets	453,609	446,371
Other	3,937	4,124
Deferred Costs and Other Assets	457,546	450,495
TOTAL ASSETS	3,873,312	3,848,814
CURRENT LIABILITIES
Currently maturing long-term debt	8	6
Associated companies accounts payable	4,936	11,031
Accounts payable	40,273	47,565
Interest accrued	12,020	13,295
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	0	4,426
Other	2,833	2,832
TOTAL	60,070	79,155
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	815,895	805,296
Accumulated deferred investment tax credits	38,034	38,673
Regulatory liability for income taxes - net	148,598	158,998
Other regulatory liabilities	484,215	381,887
Decommissioning and asset retirement cost liabilities	913,687	896,000
Pension and other postretirement liabilities	96,518	98,639
Long-term debt	590,638	630,744
Deferred Credits and Other Liabilities	28,409	22,224
TOTAL	3,115,994	3,032,461
Common Shareholders' Equity:
Common Stock, Value, Issued	601,850	601,850
Retained Earnings (Accumulated Deficit)	95,398	135,348
TOTAL	697,248	737,198	$ 693,264	$ 710,809
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 3,873,312	$ 3,848,814