Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Cash and cash equivalents:
Cash	$ 67,238	$ 129,579
Temporary cash investments	867,257	1,058,265
Total cash and cash equivalents	934,495	1,187,844
Accounts receivable:
Customer	579,674	654,995
Allowance for doubtful accounts	(12,947)	(11,924)
Other	138,285	158,419
Accrued unbilled revenues	415,424	368,677
Total accounts receivable	1,120,436	1,170,167
Deferred fuel costs	194,245	108,465
Fuel inventory - at average cost	173,387	179,600
Materials and supplies - at average cost	695,690	698,523
Deferred nuclear refueling outage costs	228,300	146,221
Prepayments and other	252,791	193,448
TOTAL	3,599,344	3,684,268
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	198	198
Decommissioning trust funds	6,796,911	5,723,897
Non-utility property - at cost (less accumulated depreciation)	247,363	233,641
Other	453,705	469,664
TOTAL	7,498,177	6,427,400
PROPERTY, PLANT, AND EQUIPMENT
Electric	45,916,902	45,191,216
Property under capital lease	618,731	619,527
Natural gas	426,674	413,224
Construction work in progress	1,741,867	1,378,180
Nuclear fuel	958,190	1,037,899
TOTAL PROPERTY, PLANT, AND EQUIPMENT	49,662,364	48,640,046
Less - accumulated depreciation and amortization	21,095,139	20,718,639
PROPERTY, PLANT, AND EQUIPMENT - NET	28,567,225	27,921,407
Regulatory assets:
Regulatory asset for income taxes - net	769,364	761,280
Other regulatory assets	4,699,217	4,769,913
Deferred fuel costs	239,199	239,100
Goodwill	377,172	377,172
Accumulated deferred income taxes	115,562	117,885
Other	141,777	1,606,009
TOTAL	6,342,291	7,871,359
TOTAL ASSETS	46,007,037	45,904,434
CURRENT LIABILITIES
Currently maturing long-term debt	702,909	364,900
Notes payable and commercial paper	1,248,969	415,011
Accounts payable	1,165,699	1,285,577
Customer deposits	401,089	403,311
Taxes Payable, Current	178,912	181,114
Interest accrued	183,282	187,229
Deferred fuel costs	60,687	102,753
Obligations under capital leases	2,387	2,423
Pension and other postretirement liabilities	72,127	76,942
Other	224,469	180,836
TOTAL	4,240,530	3,200,096
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	7,246,612	7,495,290
Accumulated deferred investment tax credits	221,449	227,147
Obligations under capital leases	23,179	24,582
Other regulatory liabilities	1,564,679	1,572,929
Decommissioning and asset retirement cost liabilities	6,118,860	5,992,476
Accumulated provisions	474,020	481,636
Pension and other postretirement liabilities	2,860,479	3,036,010
Long-term debt	14,307,759	14,467,655
Other	375,429	1,121,619
TOTAL	33,192,466	34,419,344
Subsidiaries' preferred stock without sinking fund	203,185	203,185
Common Shareholders' Equity:
Common stock	2,548	2,548
Paid-in capital	5,409,862	5,417,245
Retained earnings	8,375,890	8,195,571
Accumulated other comprehensive income (loss)	52,773	(34,971)
Less - treasury stock, at cost	5,470,217	5,498,584
TOTAL	8,370,856	8,081,809
TOTAL	8,370,856	8,081,809
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	46,007,037	45,904,434
Entergy Arkansas [Member]
Cash and cash equivalents:
Cash	2,741	20,174
Temporary cash investments	336	335
Total cash and cash equivalents	3,077	20,509
Securitization recovery trust account	3,569	4,140
Accounts receivable:
Customer	96,720	102,229
Allowance for doubtful accounts	(1,084)	(1,211)
Associated companies	36,015	35,286
Other	40,672	58,153
Accrued unbilled revenues	110,235	100,193
Total accounts receivable	282,558	294,650
Deferred fuel costs	145,033	96,690
Fuel inventory - at average cost	34,362	32,760
Materials and supplies - at average cost	182,839	182,600
Deferred nuclear refueling outage costs	109,546	81,313
Prepayments and other	19,691	14,293
TOTAL	780,675	726,955
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	884,308	834,735
Other	5,536	7,912
TOTAL	889,844	842,647
PROPERTY, PLANT, AND EQUIPMENT
Electric	10,726,461	10,488,060
Property under capital lease	637	716
Construction work in progress	328,037	304,073
Nuclear fuel	259,901	307,352
TOTAL PROPERTY, PLANT, AND EQUIPMENT	11,315,036	11,100,201
Less - accumulated depreciation and amortization	4,666,137	4,635,885
PROPERTY, PLANT, AND EQUIPMENT - NET	6,648,899	6,464,316
Regulatory assets:
Regulatory asset for income taxes - net	66,024	62,646
Other regulatory assets	1,430,243	1,428,029
Deferred fuel costs	66,997	66,898
Other	16,577	14,626
TOTAL	1,579,841	1,572,199
TOTAL ASSETS	9,899,259	9,606,117
CURRENT LIABILITIES
Currently maturing long-term debt	114,700	114,700
Short-term borrowings	14,696	0
Associated companies accounts payable	152,723	239,711
Other	204,921	185,153
Customer deposits	97,425	97,512
Taxes Payable, Current	8,131	7,194
Interest accrued	18,396	16,580
Other	36,150	36,557
TOTAL	647,142	697,407
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	2,224,030	2,186,623
Accumulated deferred investment tax credits	34,704	35,305
Other regulatory liabilities	330,797	305,907
Decommissioning and asset retirement cost liabilities	952,353	924,353
Accumulated provisions	26,139	18,682
Pension and other postretirement liabilities	383,543	424,234
Long-term debt	2,949,561	2,715,085
Other	14,183	13,854
TOTAL	6,915,310	6,624,043
Subsidiaries' preferred stock without sinking fund	31,350	31,350
Common Shareholders' Equity:
Common stock	470	470
Paid-in capital	790,243	790,243
Retained earnings	1,514,744	1,462,604
TOTAL	2,305,457	2,253,317
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	9,899,259	9,606,117
Entergy Louisiana [Member]
Cash and cash equivalents:
Cash	3,419	49,972
Temporary cash investments	211,864	163,878
Total cash and cash equivalents	215,283	213,850
Accounts receivable:
Customer	222,291	213,517
Allowance for doubtful accounts	(7,459)	(6,277)
Associated companies	173,665	155,794
Other	44,855	54,186
Accrued unbilled revenues	170,863	159,176
Total accounts receivable	604,215	576,396
Deferred fuel costs	25,902	0
Fuel inventory - at average cost	46,204	50,738
Materials and supplies - at average cost	289,985	294,421
Deferred nuclear refueling outage costs	94,772	22,535
Prepaid Taxes	57,418	110,104
Prepayments and other	59,527	41,687
TOTAL	1,393,306	1,309,731
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	1,390,587	1,390,587
Decommissioning trust funds	1,220,699	1,140,707
Non-utility property - at cost (less accumulated depreciation)	231,512	217,494
Storm Reserve Escrow Account	283,451	291,485
Other	24,481	28,844
TOTAL	3,150,730	3,069,117
PROPERTY, PLANT, AND EQUIPMENT
Electric	19,117,749	18,827,532
Natural gas	178,932	172,816
Construction work in progress	919,336	670,201
Nuclear fuel	361,502	249,807
TOTAL PROPERTY, PLANT, AND EQUIPMENT	20,577,519	19,920,356
Less - accumulated depreciation and amortization	8,530,511	8,420,596
PROPERTY, PLANT, AND EQUIPMENT - NET	12,047,008	11,499,760
Regulatory assets:
Regulatory asset for income taxes - net	475,836	470,480
Other regulatory assets	1,122,991	1,168,058
Deferred fuel costs	168,122	168,122
Other	20,420	16,003
TOTAL	1,787,369	1,822,663
TOTAL ASSETS	18,378,413	17,701,271
CURRENT LIABILITIES
Currently maturing long-term debt	517,706	200,198
Short-term borrowings	34,490	3,794
Associated companies accounts payable	75,909	82,106
Other	334,472	358,741
Customer deposits	146,633	148,601
Interest accrued	72,715	75,598
Deferred fuel costs	0	48,211
Other	101,702	80,013
TOTAL	1,283,627	997,262
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	2,910,546	2,691,118
Accumulated deferred investment tax credits	124,306	126,741
Other regulatory liabilities	816,681	880,974
Decommissioning and asset retirement cost liabilities	1,111,194	1,082,685
Accumulated provisions	304,664	310,772
Pension and other postretirement liabilities	741,841	780,278
Long-term debt	5,728,309	5,612,593
Other	148,536	137,039
TOTAL	11,886,077	11,622,200
Common Shareholders' Equity:
Accumulated other comprehensive income (loss)	(49,122)	(48,442)
Members' Equity	5,257,831	5,130,251
TOTAL	5,208,709	5,081,809
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	18,378,413	17,701,271
Entergy Mississippi [Member]
Cash and cash equivalents:
Cash	715	16
Temporary cash investments	7	76,818
Total cash and cash equivalents	722	76,834
Accounts receivable:
Customer	57,539	51,218
Allowance for doubtful accounts	(540)	(549)
Associated companies	34,939	45,973
Other	8,223	12,006
Accrued unbilled revenues	57,170	51,327
Total accounts receivable	157,331	159,975
Deferred fuel costs	20,579	6,957
Fuel inventory - at average cost	44,560	50,872
Materials and supplies - at average cost	42,065	41,146
Prepayments and other	15,742	8,873
TOTAL	280,999	344,657
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	4,600	4,608
Escrow accounts	31,875	31,783
TOTAL	36,475	36,391
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,409,179	4,321,214
Property under capital lease	873	1,590
Construction work in progress	176,623	118,182
TOTAL PROPERTY, PLANT, AND EQUIPMENT	4,586,675	4,440,986
Less - accumulated depreciation and amortization	1,626,005	1,602,711
PROPERTY, PLANT, AND EQUIPMENT - NET	2,960,670	2,838,275
Regulatory assets:
Regulatory asset for income taxes - net	39,337	38,284
Other regulatory assets	368,118	342,213
Other	3,549	2,320
TOTAL	411,004	382,817
TOTAL ASSETS	3,689,148	3,602,140
CURRENT LIABILITIES
Associated companies accounts payable	99,489	43,647
Other	73,037	80,227
Customer deposits	83,928	84,112
Taxes Payable, Current	42,679	64,040
Interest accrued	21,693	21,653
Other	15,465	9,554
TOTAL	336,291	303,233
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	892,081	861,331
Accumulated deferred investment tax credits	8,587	8,667
Decommissioning and asset retirement cost liabilities	8,967	8,722
Accumulated provisions	47,741	54,440
Pension and other postretirement liabilities	98,865	109,551
Long-term debt	1,121,356	1,120,916
Other	15,104	20,108
TOTAL	2,192,701	2,183,735
Subsidiaries' preferred stock without sinking fund	20,381	20,381
Common Shareholders' Equity:
Common stock	199,326	199,326
Paid-in capital	167	167
Retained earnings	940,282	895,298
TOTAL	1,139,775	1,094,791
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	3,689,148	3,602,140
Entergy New Orleans [Member]
Cash and cash equivalents:
Cash	862	28
Temporary cash investments	60,667	103,040
Total cash and cash equivalents	61,529	103,068
Securitization recovery trust account	1,082	1,738
Accounts receivable:
Customer	47,162	43,536
Allowance for doubtful accounts	(3,074)	(3,059)
Associated companies	18,045	16,811
Other	6,891	5,926
Accrued unbilled revenues	20,168	18,254
Total accounts receivable	89,192	81,468
Deferred fuel costs	2,731	4,818
Fuel inventory - at average cost	2,306	1,841
Materials and supplies - at average cost	10,494	8,416
Prepaid Taxes	4,341	4,379
Prepayments and other	20,353	6,587
TOTAL	192,028	212,315
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	1,016	1,016
Storm Reserve Escrow Account	81,672	81,437
Other	4,787	7,160
TOTAL	87,475	89,613
PROPERTY, PLANT, AND EQUIPMENT
Electric	1,262,714	1,258,934
Natural gas	247,742	240,408
Construction work in progress	38,314	24,975
TOTAL PROPERTY, PLANT, AND EQUIPMENT	1,548,770	1,524,317
Less - accumulated depreciation and amortization	610,405	604,825
PROPERTY, PLANT, AND EQUIPMENT - NET	938,365	919,492
Regulatory assets:
Other regulatory assets	265,387	268,106
Deferred fuel costs	4,080	4,080
Other	1,522	963
TOTAL	270,989	273,149
TOTAL ASSETS	1,488,857	1,494,569
CURRENT LIABILITIES
Current payable due Entergy Louisiana	2,104	2,104
Associated companies accounts payable	41,981	39,260
Other	23,206	35,920
Customer deposits	28,773	28,667
Interest accrued	4,974	5,443
Other	13,006	11,415
TOTAL	114,044	122,809
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	352,001	334,953
Accumulated deferred investment tax credits	559	622
Regulatory liability for income taxes - net	5,844	9,074
Decommissioning and asset retirement cost liabilities	2,974	2,875
Accumulated provisions	86,719	88,513
Pension and other postretirement liabilities	28,701	36,750
Long-term debt	423,632	428,467
Gas system rebuild insurance proceeds	0	447
Long-term payable due to Entergy Louisiana	18,423	18,423
Other	8,006	4,910
TOTAL	926,859	925,034
Subsidiaries' preferred stock without sinking fund	19,780	19,780
Common Shareholders' Equity:
Common stock	33,744	33,744
Paid-in capital	171,544	171,544
Retained earnings	222,886	221,658
TOTAL	428,174	426,946
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,488,857	1,494,569
Entergy Texas [Member]
Cash and cash equivalents:
Cash	1,036	1,216
Temporary cash investments	29	4,965
Total cash and cash equivalents	1,065	6,181
Securitization recovery trust account	28,729	37,451
Accounts receivable:
Customer	70,008	71,803
Allowance for doubtful accounts	(791)	(828)
Associated companies	40,867	39,447
Other	13,121	14,756
Accrued unbilled revenues	56,988	39,727
Total accounts receivable	180,193	164,905
Fuel inventory - at average cost	41,990	37,177
Materials and supplies - at average cost	38,807	36,631
Prepayments and other	14,585	18,599
TOTAL	305,369	300,944
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	573	600
Non-utility property - at cost (less accumulated depreciation)	376	376
Other	19,018	18,801
TOTAL	19,967	19,777
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,367,085	4,274,069
Construction work in progress	135,733	111,227
TOTAL PROPERTY, PLANT, AND EQUIPMENT	4,502,818	4,385,296
Less - accumulated depreciation and amortization	1,542,664	1,526,057
PROPERTY, PLANT, AND EQUIPMENT - NET	2,960,154	2,859,239
Regulatory assets:
Regulatory asset for income taxes - net	105,086	105,816
Other regulatory assets	695,580	740,156
Other	8,674	7,149
TOTAL	809,340	853,121
TOTAL ASSETS	4,094,830	4,033,081
CURRENT LIABILITIES
Associated companies accounts payable	86,811	47,867
Other	108,341	77,342
Customer deposits	44,329	44,419
Taxes Payable, Current	38,415	15,351
Interest accrued	25,506	25,977
Deferred fuel costs	60,687	54,543
Other	11,753	9,388
TOTAL	375,842	274,887
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	1,008,466	1,027,647
Accumulated deferred investment tax credits	12,459	12,934
Other regulatory liabilities	5,574	8,502
Decommissioning and asset retirement cost liabilities	6,650	6,470
Accumulated provisions	7,667	7,584
Pension and other postretirement liabilities	54,043	67,313
Long-term debt	1,471,091	1,508,407
Other	52,089	50,343
TOTAL	2,618,039	2,689,200
Common Shareholders' Equity:
Common stock	49,452	49,452
Paid-in capital	481,994	481,994
Retained earnings	569,503	537,548
TOTAL	1,100,949	1,068,994
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,094,830	4,033,081
System Energy [Member]
Cash and cash equivalents:
Cash	555	786
Temporary cash investments	337,045	245,077
Total cash and cash equivalents	337,600	245,863
Accounts receivable:
Associated companies	147,497	104,390
Other	5,313	3,637
Total accounts receivable	152,810	108,027
Materials and supplies - at average cost	84,418	82,469
Deferred nuclear refueling outage costs	15,867	24,729
Prepaid Taxes	25,968	15,882
Prepayments and other	8,183	4,229
TOTAL	624,846	481,199
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	839,385	780,496
TOTAL	839,385	780,496
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,304,301	4,331,668
Property under capital lease	585,084	585,084
Construction work in progress	61,617	43,888
Nuclear fuel	199,686	259,635
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,150,688	5,220,275
Less - accumulated depreciation and amortization	3,125,020	3,063,249
PROPERTY, PLANT, AND EQUIPMENT - NET	2,025,668	2,157,026
Regulatory assets:
Regulatory asset for income taxes - net	88,924	93,127
Other regulatory assets	420,319	411,212
Other	4,492	4,652
TOTAL	513,735	508,991
TOTAL ASSETS	4,003,634	3,927,712
CURRENT LIABILITIES
Currently maturing long-term debt	3	50,003
Short-term borrowings	53,182	66,893
Associated companies accounts payable	6,719	5,843
Other	48,251	50,558
Interest accrued	13,440	14,049
Other	2,958	2,957
TOTAL	124,553	190,303
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	1,142,955	1,112,865
Accumulated deferred investment tax credits	39,686	41,663
Other regulatory liabilities	406,570	370,862
Decommissioning and asset retirement cost liabilities	845,001	854,202
Pension and other postretirement liabilities	109,734	117,850
Long-term debt	551,293	501,129
Other	5,322	15
TOTAL	3,100,561	2,998,586
Common Shareholders' Equity:
Common stock	679,350	679,350
Retained earnings	99,170	59,473
TOTAL	778,520	738,823
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 4,003,634	$ 3,927,712