Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Cash and cash equivalents:
Cash	$ 81,624	$ 63,497
Temporary cash investments	1,010,027	1,287,464
Total cash and cash equivalents	1,091,651	1,350,961
Accounts receivable:
Customer	559,584	608,491
Allowance for doubtful accounts	(41,377)	(39,895)
Other	170,771	178,364
Accrued unbilled revenues	304,446	321,940
Total accounts receivable	993,424	1,068,900
Deferred fuel costs	28,296	0
Fuel inventory - at average cost	226,898	217,810
Materials and supplies - at average cost	873,679	873,357
Deferred nuclear refueling outage costs	245,623	211,512
Prepayments and other	541,624	344,872
TOTAL	4,001,195	4,067,412
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	4,653	4,341
Decommissioning trust funds	5,451,729	5,349,953
Non-utility property - at cost (less accumulated depreciation)	221,431	219,999
Other	490,232	468,704
TOTAL	6,168,045	6,042,997
PROPERTY, PLANT, AND EQUIPMENT
Electric	46,578,818	44,467,159
Property under capital lease	610,590	952,465
Natural gas	396,687	392,032
Construction work in progress	1,426,671	1,456,735
Nuclear fuel	1,302,903	1,345,422
TOTAL PROPERTY, PLANT, AND EQUIPMENT	50,315,669	48,613,813
Less - accumulated depreciation and amortization	21,333,661	20,789,452
PROPERTY, PLANT, AND EQUIPMENT - NET	28,982,008	27,824,361
Regulatory assets:
Regulatory asset for income taxes - net	776,370	775,528
Other regulatory assets	4,647,907	4,704,796
Deferred fuel costs	238,951	238,902
Goodwill	377,172	377,172
Accumulated deferred income taxes	121,700	54,903
Other	620,534	561,610
TOTAL	6,782,634	6,712,911
TOTAL ASSETS	45,933,882	44,647,681
CURRENT LIABILITIES
Currently maturing long-term debt	796,732	214,374
Notes payable and commercial paper	766,079	494,348
Accounts payable	888,349	1,071,798
Customer deposits	423,564	419,407
Taxes Payable, Current	194,081	210,077
Interest accrued	167,030	194,565
Deferred fuel costs	361,897	235,986
Obligations under capital leases	2,762	2,709
Pension and other postretirement liabilities	62,789	62,513
Other	176,065	184,181
TOTAL	3,839,348	3,089,958
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	8,467,757	8,306,865
Accumulated deferred investment tax credits	231,610	234,300
Obligations under capital leases	26,290	27,001
Other regulatory liabilities	1,433,632	1,414,898
Decommissioning and asset retirement cost liabilities	4,808,315	4,790,187
Accumulated provisions	456,698	460,727
Pension and other postretirement liabilities	3,098,036	3,187,357
Long-term debt	13,500,140	13,111,556
Other	392,924	449,856
TOTAL	32,415,402	31,982,747
Subsidiaries' preferred stock without sinking fund	318,185	318,185
Common Shareholders' Equity:
Common stock	2,548	2,548
Paid-in capital	5,384,762	5,403,758
Retained earnings	9,472,040	9,393,913
Accumulated other comprehensive income	29,792	8,951
Less - treasury stock, at cost	5,528,195	5,552,379
TOTAL	9,360,947	9,256,791
TOTAL	9,360,947	9,256,791
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	45,933,882	44,647,681
Entergy Arkansas [Member]
Cash and cash equivalents:
Cash	20,416	9,066
Temporary cash investments	13,363	69
Total cash and cash equivalents	33,779	9,135
Securitization recovery trust account	7,617	4,204
Accounts receivable:
Customer	120,539	108,636
Allowance for doubtful accounts	(34,312)	(34,226)
Associated companies	37,130	32,987
Other	72,420	84,216
Accrued unbilled revenues	75,666	73,583
Total accounts receivable	271,443	265,196
Deferred fuel costs	28,296	0
Fuel inventory - at average cost	68,514	62,689
Materials and supplies - at average cost	173,554	169,919
Deferred nuclear refueling outage costs	52,195	67,834
Prepaid Taxes	29,081	30,291
Prepayments and other	11,611	15,145
TOTAL	676,090	624,413
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	785,503	771,313
Other	20,118	12,895
TOTAL	805,621	784,208
PROPERTY, PLANT, AND EQUIPMENT
Electric	10,021,925	9,536,802
Property under capital lease	812	844
Construction work in progress	358,522	388,075
Nuclear fuel	233,578	286,341
TOTAL PROPERTY, PLANT, AND EQUIPMENT	10,614,837	10,212,062
Less - accumulated depreciation and amortization	4,479,132	4,349,809
PROPERTY, PLANT, AND EQUIPMENT - NET	6,135,705	5,862,253
Regulatory assets:
Regulatory asset for income taxes - net	62,158	61,438
Other regulatory assets	1,332,161	1,333,773
Deferred fuel costs	66,749	66,700
Other	20,440	14,989
TOTAL	1,481,508	1,476,900
TOTAL ASSETS	9,098,924	8,747,774
CURRENT LIABILITIES
Currently maturing long-term debt	55,000	55,000
Short-term borrowings	0	11,690
Associated companies accounts payable	129,526	110,464
Other	136,648	177,758
Customer deposits	120,060	118,340
Interest accrued	25,111	19,883
Deferred fuel costs	0	8,853
Other	48,269	45,219
TOTAL	514,614	547,207
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	1,998,112	1,982,812
Accumulated deferred investment tax credits	36,206	36,506
Other regulatory liabilities	257,879	242,913
Decommissioning and asset retirement cost liabilities	885,448	872,346
Accumulated provisions	5,907	5,552
Pension and other postretirement liabilities	434,865	459,153
Long-term debt	2,722,649	2,574,839
Other	17,660	18,438
TOTAL	6,358,726	6,192,559
Subsidiaries' preferred stock without sinking fund	116,350	116,350
Common Shareholders' Equity:
Common stock	470	470
Paid-in capital	788,493	588,493
Retained earnings	1,320,271	1,302,695
TOTAL	2,109,234	1,891,658
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	9,098,924	8,747,774
Entergy Louisiana [Member]
Assets Held-in-trust, Current	196,568	0
Cash and cash equivalents:
Cash	11,957	348
Temporary cash investments	99,991	34,754
Total cash and cash equivalents	111,948	35,102
Accounts receivable:
Customer	166,483	179,051
Allowance for doubtful accounts	(5,781)	(4,209)
Associated companies	139,816	94,418
Other	60,825	56,793
Accrued unbilled revenues	141,227	143,079
Total accounts receivable	502,570	469,132
Fuel inventory - at average cost	50,583	48,045
Materials and supplies - at average cost	287,314	282,688
Deferred nuclear refueling outage costs	52,679	66,984
Prepayments and other	29,965	28,294
TOTAL	1,231,627	930,245
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	1,390,587	1,390,587
Decommissioning trust funds	1,065,165	1,042,293
Non-utility property - at cost (less accumulated depreciation)	207,963	206,293
Storm Reserve Escrow Account	290,665	290,422
Other	28,976	14,776
TOTAL	2,983,356	2,944,371
PROPERTY, PLANT, AND EQUIPMENT
Electric	18,729,802	17,629,077
Property under capital lease	0	341,514
Natural gas	162,314	159,252
Construction work in progress	390,215	420,874
Nuclear fuel	326,280	386,524
TOTAL PROPERTY, PLANT, AND EQUIPMENT	19,608,611	18,937,241
Less - accumulated depreciation and amortization	8,505,828	8,302,774
PROPERTY, PLANT, AND EQUIPMENT - NET	11,102,783	10,634,467
Regulatory assets:
Regulatory asset for income taxes - net	475,657	478,243
Other regulatory assets	1,190,427	1,217,874
Deferred fuel costs	168,122	168,122
Other	24,286	14,125
TOTAL	1,858,492	1,878,364
TOTAL ASSETS	17,176,258	16,387,447
CURRENT LIABILITIES
Currently maturing long-term debt	61,004	29,372
Short-term borrowings	77,450	60,356
Associated companies accounts payable	86,379	165,419
Other	193,603	276,280
Customer deposits	147,709	146,555
Taxes Payable, Current	20,698	125,142
Interest accrued	72,195	74,380
Deferred fuel costs	110,745	65,234
Other	77,000	79,982
TOTAL	846,783	1,022,720
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	2,668,395	2,506,956
Accumulated deferred investment tax credits	130,505	131,760
Regulatory liability for income taxes - net	0	2,473
Other regulatory liabilities	817,625	818,623
Decommissioning and asset retirement cost liabilities	1,041,300	1,027,862
Accumulated provisions	307,587	310,282
Pension and other postretirement liabilities	814,000	833,185
Long-term debt	5,559,230	4,806,790
Long-term payables of associated companies	671	1,073
Other	141,514	188,411
TOTAL	11,480,827	10,627,415
Common Shareholders' Equity:
Accumulated other comprehensive income	(56,675)	(56,412)
Members' Equity	4,905,323	4,793,724
TOTAL	4,848,648	4,737,312
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	17,176,258	16,387,447
Entergy Mississippi [Member]
Cash and cash equivalents:
Cash	1,277	1,426
Temporary cash investments	112,669	144,179
Total cash and cash equivalents	113,946	145,605
Accounts receivable:
Customer	50,148	56,685
Allowance for doubtful accounts	(499)	(718)
Associated companies	46,141	34,964
Other	5,009	8,276
Accrued unbilled revenues	40,429	47,284
Total accounts receivable	141,228	146,491
Fuel inventory - at average cost	54,517	51,273
Materials and supplies - at average cost	39,113	39,491
Prepayments and other	6,292	5,184
TOTAL	355,096	388,044
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	4,621	4,625
Escrow accounts	41,752	41,726
TOTAL	46,373	46,351
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,133,487	4,083,933
Property under capital lease	2,613	2,942
Construction work in progress	116,595	114,067
TOTAL PROPERTY, PLANT, AND EQUIPMENT	4,252,695	4,200,942
Less - accumulated depreciation and amortization	1,554,988	1,534,522
PROPERTY, PLANT, AND EQUIPMENT - NET	2,697,707	2,666,420
Regulatory assets:
Regulatory asset for income taxes - net	45,814	45,790
Other regulatory assets	327,906	328,681
Other	5,335	2,121
TOTAL	379,055	376,592
TOTAL ASSETS	3,478,231	3,477,407
CURRENT LIABILITIES
Currently maturing long-term debt	125,000	125,000
Associated companies accounts payable	31,226	38,496
Other	46,536	51,502
Customer deposits	82,493	81,583
Taxes Payable, Current	19,452	43,461
Interest accrued	18,798	20,831
Deferred fuel costs	148,104	107,754
Other	21,627	22,754
TOTAL	493,236	491,381
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	804,273	810,635
Accumulated deferred investment tax credits	4,605	4,645
Decommissioning and asset retirement cost liabilities	8,367	8,252
Accumulated provisions	46,046	48,062
Pension and other postretirement liabilities	114,199	120,217
Long-term debt	920,430	920,085
Other	8,233	11,699
TOTAL	1,906,153	1,923,595
Subsidiaries' preferred stock without sinking fund	50,381	50,381
Common Shareholders' Equity:
Common stock	199,326	199,326
Paid-in capital	(690)	(690)
Retained earnings	829,825	813,414
TOTAL	1,028,461	1,012,050
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	3,478,231	3,477,407
Entergy New Orleans [Member]
Cash and cash equivalents:
Cash	652	1,068
Temporary cash investments	5,316	87,808
Total cash and cash equivalents	5,968	88,876
Securitization recovery trust account	7,366	4,620
Accounts receivable:
Customer	39,245	34,627
Allowance for doubtful accounts	(289)	(268)
Associated companies	9,063	23,248
Other	6,099	3,753
Accrued unbilled revenues	15,328	17,799
Total accounts receivable	69,446	79,159
Fuel inventory - at average cost	394	1,912
Materials and supplies - at average cost	15,257	13,244
Prepayments and other	17,932	10,263
TOTAL	116,363	198,074
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	1,016	1,016
Storm Reserve Escrow Account	81,102	81,002
Other	7,119	0
TOTAL	89,237	82,018
PROPERTY, PLANT, AND EQUIPMENT
Electric	1,390,403	1,051,239
Natural gas	234,374	232,780
Construction work in progress	18,582	29,027
TOTAL PROPERTY, PLANT, AND EQUIPMENT	1,643,359	1,313,046
Less - accumulated depreciation and amortization	740,029	648,081
PROPERTY, PLANT, AND EQUIPMENT - NET	903,330	664,965
Regulatory assets:
Other regulatory assets	259,052	265,322
Deferred fuel costs	4,080	4,080
Other	2,089	685
TOTAL	265,221	270,087
TOTAL ASSETS	1,374,151	1,215,144
CURRENT LIABILITIES
Current payable due Entergy Louisiana	4,973	4,973
Associated companies accounts payable	35,163	37,467
Other	22,583	21,471
Customer deposits	28,497	28,392
Taxes Payable, Current	14,187	0
Interest accrued	4,330	4,909
Deferred fuel costs	23,733	29,021
Other	9,525	6,216
TOTAL	142,991	132,449
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	203,650	214,061
Accumulated deferred investment tax credits	722	753
Regulatory liability for income taxes - net	11,841	13,199
Decommissioning and asset retirement cost liabilities	2,733	2,687
Accumulated provisions	83,655	84,187
Pension and other postretirement liabilities	39,507	43,609
Long-term debt	424,392	317,380
Gas system rebuild insurance proceeds	10,269	12,788
Long-term payable due to Entergy Louisiana	20,527	20,527
Other	5,376	3,692
TOTAL	802,672	712,883
Subsidiaries' preferred stock without sinking fund	19,780	19,780
Common Shareholders' Equity:
Common stock	33,744	33,744
Paid-in capital	171,544	123,794
Retained earnings	203,420	192,494
TOTAL	408,708	350,032
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,374,151	1,215,144
Entergy Texas [Member]
Cash and cash equivalents:
Cash	1,550	2,153
Temporary cash investments	64,783	29
Total cash and cash equivalents	66,333	2,182
Securitization recovery trust account	27,897	38,161
Accounts receivable:
Customer	53,133	61,870
Allowance for doubtful accounts	(495)	(474)
Associated companies	66,773	42,279
Other	10,537	11,054
Accrued unbilled revenues	31,796	40,195
Total accounts receivable	161,744	154,924
Fuel inventory - at average cost	44,082	46,942
Materials and supplies - at average cost	35,415	34,994
Prepayments and other	11,693	17,975
TOTAL	347,164	295,178
OTHER PROPERTY AND INVESTMENTS
Investment in affiliates - at equity	613	620
Non-utility property - at cost (less accumulated depreciation)	376	376
Other	20,426	20,186
TOTAL	21,415	21,182
PROPERTY, PLANT, AND EQUIPMENT
Electric	3,947,837	3,923,100
Construction work in progress	239,695	210,964
TOTAL PROPERTY, PLANT, AND EQUIPMENT	4,187,532	4,134,064
Less - accumulated depreciation and amortization	1,479,969	1,477,529
PROPERTY, PLANT, AND EQUIPMENT - NET	2,707,563	2,656,535
Regulatory assets:
Regulatory asset for income taxes - net	107,650	107,499
Other regulatory assets	788,401	812,862
Other	8,084	5,326
TOTAL	904,135	925,687
TOTAL ASSETS	3,980,277	3,898,582
CURRENT LIABILITIES
Associated companies accounts payable	74,610	106,065
Other	63,654	87,421
Customer deposits	44,806	44,537
Taxes Payable, Current	24,204	5,333
Interest accrued	19,228	29,206
Deferred fuel costs	79,316	25,124
Other	6,179	10,363
TOTAL	311,997	308,049
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	977,049	1,006,834
Accumulated deferred investment tax credits	13,609	13,835
Other regulatory liabilities	6,446	6,396
Decommissioning and asset retirement cost liabilities	6,209	6,124
Accumulated provisions	9,981	9,319
Pension and other postretirement liabilities	71,023	77,517
Long-term debt	1,552,741	1,451,967
Other	55,204	57,085
TOTAL	2,692,262	2,629,077
Common Shareholders' Equity:
Common stock	49,452	49,452
Paid-in capital	481,994	481,994
Retained earnings	444,572	430,010
TOTAL	976,018	961,456
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	3,980,277	3,898,582
System Energy [Member]
Cash and cash equivalents:
Cash	698	8,681
Temporary cash investments	255,004	221,980
Total cash and cash equivalents	255,702	230,661
Accounts receivable:
Associated companies	76,847	93,724
Other	7,602	4,574
Total accounts receivable	84,449	98,298
Materials and supplies - at average cost	78,850	87,366
Deferred nuclear refueling outage costs	39,352	5,605
Prepaid Taxes	47,944	9,327
Prepayments and other	6,849	1,955
TOTAL	513,146	433,212
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	719,769	701,460
TOTAL	719,769	701,460
PROPERTY, PLANT, AND EQUIPMENT
Electric	4,313,474	4,253,949
Property under capital lease	575,027	575,027
Construction work in progress	74,726	92,546
Nuclear fuel	285,426	183,706
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,248,653	5,105,228
Less - accumulated depreciation and amortization	2,992,700	2,961,842
PROPERTY, PLANT, AND EQUIPMENT - NET	2,255,953	2,143,386
Regulatory assets:
Regulatory asset for income taxes - net	96,933	98,230
Other regulatory assets	357,446	347,830
Other	4,881	4,757
TOTAL	459,260	450,817
TOTAL ASSETS	3,948,128	3,728,875
CURRENT LIABILITIES
Currently maturing long-term debt	50,002	2
Short-term borrowings	111,012	0
Associated companies accounts payable	3,663	7,391
Other	58,048	34,010
Interest accrued	15,020	14,183
Other	1,940	1,926
TOTAL	239,685	57,512
NON-CURRENT LIABILITIES
Accumulated deferred income taxes and taxes accrued	1,065,590	1,019,075
Accumulated deferred investment tax credits	44,646	45,451
Other regulatory liabilities	344,950	337,424
Decommissioning and asset retirement cost liabilities	815,792	803,405
Pension and other postretirement liabilities	107,688	112,264
Long-term debt	522,740	572,665
TOTAL	2,901,406	2,890,284
Common Shareholders' Equity:
Common stock	719,350	719,350
Retained earnings	87,687	61,729
TOTAL	807,037	781,079
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 3,948,128	$ 3,728,875