Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents:
Cash	$ 44,944	$ 128,851
Temporary cash investments	397,615	1,630,248
Total cash and cash equivalents	442,559	1,759,099	$ 425,722	$ 480,975
Accounts receivable:
Customer	786,866	833,478
Allowance for doubtful accounts	(68,608)	(117,794)
Other	231,843	135,208
Accrued unbilled revenues	420,255	434,835
Total accounts receivable	1,370,356	1,285,727
Deferred fuel costs	324,394	4,380
Fuel inventory - at average cost	154,575	172,934
Public Utilities, Inventory	1,041,515	962,185
Deferred nuclear refueling outage costs	133,422	179,150
Prepayments and other	156,774	196,424
TOTAL	3,623,595	4,559,899
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	5,514,016	7,253,215
Non-utility property - at cost (less accumulated depreciation)	357,576	343,328
Other	159,455	214,222
TOTAL	6,031,047	7,810,765
PROPERTY, PLANT, AND EQUIPMENT
Electric	64,263,250	59,696,443
Natural gas	658,989	610,768
Construction work in progress	1,511,966	2,012,030
Nuclear fuel	577,006	601,281
TOTAL PROPERTY, PLANT, AND EQUIPMENT	67,011,211	62,920,522
Less - accumulated depreciation and amortization	24,767,051	24,067,745
PROPERTY, PLANT, AND EQUIPMENT - NET	42,244,160	38,852,777
Regulatory assets:
Regulatory Assets, Noncurrent	6,613,256	6,076,549
Deferred Fuel Cost Non Current	240,953	240,422
Goodwill	377,172	377,172
Deferred Income Tax Assets, Net	54,186	76,289
Other	269,873	245,339
Deferred Costs and Other Assets	7,555,440	7,015,771
TOTAL ASSETS	59,454,242	58,239,212
CURRENT LIABILITIES
Currently maturing long-term debt	1,039,329	1,164,015
Short-term borrowings	1,201,177	1,627,489
Accounts payable	2,610,132	2,739,437
Customer deposits	395,184	401,512
Taxes accrued	419,828	441,011
Interest accrued	191,151	201,791
Deferred fuel costs	7,607	153,113
Pension and other postretirement liabilities	68,336	61,815
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	53,385	63,683
Other	204,613	206,640
TOTAL	6,190,742	7,060,506
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	4,706,797	4,361,772
Accumulated deferred investment tax credits	211,975	212,494
Regulatory liability for income taxes - net	1,255,692	1,521,757
Other regulatory liabilities	2,643,845	2,323,851
Decommissioning trust fund	4,757,084	6,469,452
Loss Contingency Accrual	157,122	242,835
Pension and other postretirement liabilities	1,949,325	2,853,013
Long-term debt	24,841,572	21,205,761
Deferred Credits and Other Liabilities	815,284	807,219
TOTAL	41,338,696	39,998,154
Commitments and Contingencies
Subsidiaries’ preferred stock without sinking fund	219,410	219,410
EQUITY
Common stock	2,720	2,700
Additional Paid in Capital, Common Stock	6,766,239	6,549,923
Retained Earnings (Accumulated Deficit)	10,240,552	9,897,182
Accumulated other comprehensive loss	(332,528)	(449,207)
Less - treasury stock, at cost (76,681,936 shares in 2013 and 76,945,239 shares in 2012)	5,039,699	5,074,456
Total common shareholders' equity	11,637,284	10,926,142
Total common shareholders' equity	11,705,394	10,961,142	10,258,675	8,844,305
Stockholders' Equity Attributable to Noncontrolling Interest	68,110	35,000
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	59,454,242	58,239,212
Preferred Stock, Value, Issued	$ 0	$ 0
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Authorized	1,000,000	0
Common Stock, Shares, Issued	271,965,510	270,035,180
Common Stock, Shares Authorized	499,000,000	500,000,000
Entergy New Orleans [Member]
Cash and cash equivalents:
Cash	$ 26	$ 26
Temporary cash investments	42,836	0
Total cash and cash equivalents	42,862	26	6,017	19,677
Restricted Investments, Current	1,999	3,364
Accounts receivable:
Customer	69,902	70,694
Allowance for doubtful accounts	(13,282)	(17,430)
Other	13,668	4,248
Accrued unbilled revenues	25,550	31,069
Total accounts receivable	169,984	90,962
Deferred fuel costs	0	2,130
Fuel inventory - at average cost	2,945	1,978
Public Utilities, Inventory	19,216	16,550
Prepayments and other	5,428	3,715
TOTAL	242,434	118,725
OTHER PROPERTY AND INVESTMENTS
Storm Reserve Escrow Account	0	83,038
Non-utility property - at cost (less accumulated depreciation)	1,016	1,016
TOTAL	1,016	84,054
PROPERTY, PLANT, AND EQUIPMENT
Electric	1,976,202	1,821,638
Natural gas	373,983	348,024
Construction work in progress	22,199	12,460
TOTAL PROPERTY, PLANT, AND EQUIPMENT	2,372,384	2,182,122
Less - accumulated depreciation and amortization	774,309	740,796
PROPERTY, PLANT, AND EQUIPMENT - NET	1,598,075	1,441,326
Regulatory assets:
Regulatory Assets, Noncurrent	248,617	266,790
Deferred Fuel Cost Non Current	4,080	4,080
Other	56,101	23,931
Deferred Costs and Other Assets	308,798	294,801
TOTAL ASSETS	2,150,323	1,938,906
CURRENT LIABILITIES
Notes Payable, Related Parties, Current	1,326	1,618
Associated companies accounts payable	45,057	54,234
Accounts payable	146,921	60,766
Customer deposits	28,539	27,912
Taxes accrued	4,385	4,700
Interest accrued	7,991	8,095
Deferred fuel costs	7,607	0
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	1,906	3,296
Other	6,204	5,462
TOTAL	249,936	166,083
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	365,384	338,714
Accumulated deferred investment tax credits	16,306	16,095
Regulatory liability for income taxes - net	40,589	55,675
Decommissioning trust fund	4,032	3,768
Loss Contingency Accrual	6,329	89,898
Long-term debt	777,254	629,704
Notes Payable, Related Parties, Noncurrent	9,585	10,911
Deferred Credits and Other Liabilities	42,193	21,141
TOTAL	1,261,672	1,165,906
Commitments and Contingencies
Members' Equity	638,715	606,917
EQUITY
Total common shareholders' equity	638,715	606,917	497,579	444,950
Members' Equity	638,715	606,917
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	2,150,323	1,938,906
Accounts Receivable, Related Parties, Current	74,146	2,381
Entergy Louisiana [Member]
Cash and cash equivalents:
Cash	195	1,303
Temporary cash investments	18,378	726,717
Total cash and cash equivalents	18,573	728,020	2,006	43,364
Accounts receivable:
Customer	355,265	317,905
Allowance for doubtful accounts	(29,231)	(45,693)
Other	36,674	41,760
Accrued unbilled revenues	174,768	178,840
Total accounts receivable	634,015	574,436
Deferred fuel costs	45,374	2,250
Fuel inventory - at average cost	42,958	50,680
Public Utilities, Inventory	485,325	437,933
Deferred nuclear refueling outage costs	39,582	48,407
Prepayments and other	44,187	36,813
TOTAL	1,310,014	1,878,539
Investments in and Advances to Affiliates, at Fair Value	1,390,587	1,390,587
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	2,114,523	1,794,042
Non-utility property - at cost (less accumulated depreciation)	337,247	323,110
Other	13,744	13,399
TOTAL	3,856,101	3,521,138
PROPERTY, PLANT, AND EQUIPMENT
Electric	28,055,038	25,619,789
Natural gas	285,006	262,744
Construction work in progress	847,924	667,281
Nuclear fuel	209,418	210,128
TOTAL PROPERTY, PLANT, AND EQUIPMENT	29,397,386	26,759,942
Less - accumulated depreciation and amortization	9,860,252	9,372,224
PROPERTY, PLANT, AND EQUIPMENT - NET	19,537,134	17,387,718
Regulatory assets:
Regulatory Assets, Noncurrent	2,776,666	1,726,066
Deferred Fuel Cost Non Current	168,122	168,122
Other	27,801	23,924
Deferred Costs and Other Assets	2,972,589	1,918,112
TOTAL ASSETS	27,675,838	24,705,507
CURRENT LIABILITIES
Currently maturing long-term debt	200,000	240,000
Associated companies accounts payable	183,172	103,148
Accounts payable	1,481,902	1,450,008
Customer deposits	150,697	152,612
Taxes accrued	64,248	42,617
Interest accrued	93,052	92,249
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	24,291	31,138
Other	68,995	62,968
TOTAL	2,266,357	2,174,740
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	2,433,854	2,138,522
Accumulated deferred investment tax credits	102,588	107,317
Regulatory liability for income taxes - net	313,693	447,628
Other regulatory liabilities	1,042,597	918,293
Decommissioning trust fund	1,653,198	1,573,307
Loss Contingency Accrual	24,490	24,939
Pension and other postretirement liabilities	528,213	692,728
Long-term debt	10,714,346	8,787,451
Deferred Credits and Other Liabilities	415,930	382,894
TOTAL	17,228,909	15,073,079
Commitments and Contingencies
Members' Equity	8,172,294	7,453,361
EQUITY
Accumulated other comprehensive loss	8,278	4,327
Total common shareholders' equity	8,180,572	7,457,688	6,397,118	5,902,918
Members' Equity	8,172,294	7,453,361
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	27,675,838	24,705,507
Accounts Receivable, Related Parties, Current	96,539	81,624
Entergy Arkansas [Member]
Cash and cash equivalents:
Cash	8,155	24,108
Temporary cash investments	4,760	168,020
Total cash and cash equivalents	12,915	192,128	3,519	119
Accounts receivable:
Customer	154,412	183,719
Allowance for doubtful accounts	(13,072)	(18,334)
Other	51,064	35,845
Accrued unbilled revenues	101,663	109,000
Total accounts receivable	323,654	344,446
Deferred fuel costs	108,862	0
Fuel inventory - at average cost	50,892	43,811
Public Utilities, Inventory	247,980	237,640
Deferred nuclear refueling outage costs	65,318	32,692
Prepayments and other	14,863	13,296
TOTAL	824,484	864,013
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	1,438,416	1,273,921
Other	947	341
TOTAL	1,439,363	1,274,262
PROPERTY, PLANT, AND EQUIPMENT
Electric	13,578,297	12,905,322
Construction work in progress	241,127	234,213
Nuclear fuel	182,055	163,044
TOTAL PROPERTY, PLANT, AND EQUIPMENT	14,001,479	13,302,579
Less - accumulated depreciation and amortization	5,472,296	5,255,355
PROPERTY, PLANT, AND EQUIPMENT - NET	8,529,183	8,047,224
Regulatory assets:
Regulatory Assets, Noncurrent	1,689,678	1,832,384
Deferred Fuel Cost Non Current	68,751	68,220
Other	13,660	14,028
Deferred Costs and Other Assets	1,772,089	1,914,632
TOTAL ASSETS	12,565,119	12,100,131
CURRENT LIABILITIES
Currently maturing long-term debt	0	485,000
Associated companies accounts payable	217,310	59,448
Accounts payable	190,476	208,591
Customer deposits	92,511	98,506
Taxes accrued	89,590	81,837
Interest accrued	17,108	22,745
Deferred fuel costs	0	53,065
Other	38,901	40,628
TOTAL	645,896	1,049,820
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	1,416,201	1,286,123
Accumulated deferred investment tax credits	29,299	30,500
Regulatory liability for income taxes - net	431,655	467,031
Other regulatory liabilities	743,314	686,872
Decommissioning trust fund	1,390,410	1,314,160
Loss Contingency Accrual	77,084	70,169
Pension and other postretirement liabilities	185,789	361,682
Long-term debt	3,958,862	3,482,507
Deferred Credits and Other Liabilities	110,754	75,098
TOTAL	8,343,368	7,774,142
Commitments and Contingencies
Members' Equity	3,542,745	3,276,169
Members' Equity Attributable to Noncontrolling Interest	33,110	0
EQUITY
Total common shareholders' equity	3,575,855	3,276,169	3,125,937	2,983,103
Members' Equity	3,542,745	3,276,169
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	12,565,119	12,100,131
Accounts Receivable, Related Parties, Current	$ 29,587	$ 34,216
Preferred Stock, Shares Authorized	0	0
Entergy Mississippi [Member]
Cash and cash equivalents:
Cash	$ 29	$ 11
Temporary cash investments	47,598	7
Total cash and cash equivalents	47,627	18	51,601	36,954
Accounts receivable:
Customer	84,048	105,732
Allowance for doubtful accounts	(7,209)	(19,527)
Other	14,609	11,821
Accrued unbilled revenues	56,034	59,514
Total accounts receivable	190,476	160,280
Deferred fuel costs	121,878	0
Fuel inventory - at average cost	10,311	17,117
Public Utilities, Inventory	69,639	59,542
Prepayments and other	6,394	4,876
TOTAL	446,325	241,833
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	4,527	4,543
TOTAL	53,413	69,178
PROPERTY, PLANT, AND EQUIPMENT
Electric	6,613,109	6,084,730
Construction work in progress	95,452	134,854
TOTAL PROPERTY, PLANT, AND EQUIPMENT	6,708,561	6,219,584
Less - accumulated depreciation and amortization	2,127,590	2,005,087
PROPERTY, PLANT, AND EQUIPMENT - NET	4,580,971	4,214,497
Regulatory assets:
Regulatory Assets, Noncurrent	462,432	467,341
Other	14,248	14,413
Deferred Costs and Other Assets	476,680	481,754
TOTAL ASSETS	5,557,389	5,007,262
CURRENT LIABILITIES
Currently maturing long-term debt	0	0
Associated companies accounts payable	42,929	61,727
Accounts payable	113,000	117,629
Customer deposits	86,167	86,200
Taxes accrued	106,273	108,084
Interest accrued	17,283	20,889
Deferred fuel costs	0	14,691
Other	36,731	34,270
TOTAL	402,383	443,490
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	720,097	646,674
Accumulated deferred investment tax credits	10,913	9,062
Regulatory liability for income taxes - net	212,445	224,000
Other regulatory liabilities	49,313	15,828
Decommissioning trust fund	10,315	9,762
Loss Contingency Accrual	38,028	46,504
Pension and other postretirement liabilities	59,065	110,901
Long-term debt	2,179,989	1,780,577
Deferred Credits and Other Liabilities	35,273	47,730
TOTAL	3,315,438	2,891,038
Commitments and Contingencies
Members' Equity	1,839,568	1,672,734
EQUITY
Total common shareholders' equity	1,839,568	1,672,734	1,542,151	1,292,226
Members' Equity	1,839,568	1,672,734
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	5,557,389	5,007,262
Accounts Receivable, Related Parties, Current	42,994	2,740
Escrow accounts	48,886	64,635
Entergy Texas [Member]
Cash and cash equivalents:
Cash	28	26
Temporary cash investments	0	248,570
Total cash and cash equivalents	28	248,596	12,929	56
Restricted Investments, Current	26,629	36,233
Accounts receivable:
Customer	83,797	103,221
Allowance for doubtful accounts	(5,814)	(16,810)
Other	13,404	11,780
Accrued unbilled revenues	62,241	56,411
Total accounts receivable	185,348	173,494
Deferred fuel costs	48,280	0
Fuel inventory - at average cost	42,712	53,531
Public Utilities, Inventory	72,884	56,227
Prepayments and other	17,515	20,165
TOTAL	393,396	588,246
Equity Method Investments	300	349
OTHER PROPERTY AND INVESTMENTS
Non-utility property - at cost (less accumulated depreciation)	376	376
Other	18,128	19,889
TOTAL	18,804	20,614
PROPERTY, PLANT, AND EQUIPMENT
Electric	7,181,567	6,007,687
Construction work in progress	183,965	879,908
TOTAL PROPERTY, PLANT, AND EQUIPMENT	7,365,532	6,887,595
Less - accumulated depreciation and amortization	2,049,750	1,864,494
PROPERTY, PLANT, AND EQUIPMENT - NET	5,315,782	5,023,101
Regulatory assets:
Regulatory Assets, Noncurrent	421,333	524,713
Other	112,096	70,397
Deferred Costs and Other Assets	533,429	595,110
TOTAL ASSETS	6,261,411	6,227,071
CURRENT LIABILITIES
Currently maturing long-term debt	0	200,000
Associated companies accounts payable	142,929	55,944
Accounts payable	164,981	350,947
Customer deposits	37,271	36,282
Taxes accrued	49,018	52,438
Interest accrued	19,002	20,856
Deferred fuel costs	0	85,356
Current portion of regulatory liability for income taxes - net related to unprotected ADIT	27,188	29,249
Other	16,120	12,370
TOTAL	456,509	843,442
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	692,496	639,422
Accumulated deferred investment tax credits	9,325	9,942
Regulatory liability for income taxes - net	144,145	175,594
Other regulatory liabilities	37,060	32,297
Decommissioning trust fund	8,520	8,063
Loss Contingency Accrual	8,242	8,382
Long-term debt	2,354,148	2,293,708
Deferred Credits and Other Liabilities	67,760	58,643
TOTAL	3,321,696	3,226,051
Commitments and Contingencies
EQUITY
Common stock	49,452	49,452
Additional Paid in Capital, Common Stock	1,050,125	955,162
Retained Earnings (Accumulated Deficit)	1,344,879	1,117,964
Total common shareholders' equity	2,444,456	2,122,578
Total common shareholders' equity	2,483,206	2,157,578	1,799,407	1,422,402
Stockholders' Equity Attributable to Noncontrolling Interest	38,750	35,000
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	6,261,411	6,227,071
Accounts Receivable, Related Parties, Current	$ 31,720	$ 18,892
Preferred Stock, Shares Authorized	1,550,000	1,400,000
Common Stock, Shares, Issued	46,525,000	46,525,000
Common Stock, Shares Authorized	200,000,000	200,000,000
System Energy [Member]
Cash and cash equivalents:
Cash	$ 87	$ 26,086
Temporary cash investments	89,114	216,383
Total cash and cash equivalents	89,201	242,469	68,534	95,685
Accounts receivable:
Other	7,003	2,550
Total accounts receivable	125,980	60,293
Public Utilities, Inventory	127,093	123,006
Deferred nuclear refueling outage costs	10,123	34,459
Prepayments and other	1,870	6,864
TOTAL	354,267	467,091
OTHER PROPERTY AND INVESTMENTS
Decommissioning trust funds	1,385,254	1,215,868
TOTAL	1,385,254	1,215,868
PROPERTY, PLANT, AND EQUIPMENT
Electric	5,362,494	5,309,458
Construction work in progress	97,968	59,831
Nuclear fuel	171,438	175,005
TOTAL PROPERTY, PLANT, AND EQUIPMENT	5,631,900	5,544,294
Less - accumulated depreciation and amortization	3,396,136	3,355,367
PROPERTY, PLANT, AND EQUIPMENT - NET	2,235,764	2,188,927
Regulatory assets:
Regulatory Assets, Noncurrent	395,546	538,963
Other	1,793	3,119
Deferred Costs and Other Assets	397,339	542,082
TOTAL ASSETS	4,372,624	4,413,968
CURRENT LIABILITIES
Currently maturing long-term debt	50,329	100,015
Associated companies accounts payable	23,682	15,309
Accounts payable	62,573	41,313
Taxes accrued	32,918	82,977
Interest accrued	11,714	12,722
Other	4,101	4,248
TOTAL	185,317	256,584
NON-CURRENT LIABILITIES
Deferred Income Tax Liabilities, Net	382,931	359,835
Accumulated deferred investment tax credits	43,003	38,902
Regulatory liability for income taxes - net	113,165	151,829
Other regulatory liabilities	744,944	665,396
Decommissioning trust fund	1,007,603	968,910
Pension and other postretirement liabilities	76,104	125,412
Long-term debt	690,967	705,259
Deferred Credits and Other Liabilities	37,230	61,295
TOTAL	3,095,947	3,076,838
Commitments and Contingencies
EQUITY
Common stock	951,850	951,850
Retained Earnings (Accumulated Deficit)	139,510	128,696
Total common shareholders' equity	1,091,360	1,080,546	$ 712,068	$ 737,198
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	4,372,624	4,413,968
Accounts Receivable, Related Parties, Current	$ 118,977	$ 57,743
Common Stock, Shares, Issued	789,350	789,350
Common Stock, Shares Authorized	1,000,000	1,000,000