Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,412,788	$ 2,666,209	$ 4,839,967	$ 5,275,792
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	341,005	467,323	738,408	945,653
Nuclear refueling outage expenses	44,894	50,962	95,112	101,403
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	736,261	841,870	1,438,345	1,624,921
Asset Impairment Charges	6,775	16,419	11,870	90,397
Decommissioning	95,413	104,627	189,097	206,746
Taxes, Other	158,646	163,408	328,940	321,983
Other Depreciation and Amortization	403,769	363,496	803,478	720,770
Other regulatory charges (credits) - net	(25,247)	(26,532)	(32,925)	(43,478)
Costs and Expenses	1,973,477	2,327,434	4,000,900	4,653,763
OPERATING INCOME	439,311	338,775	839,067	622,029
OTHER INCOME
Allowance for equity funds used during construction	28,370	37,169	64,324	75,385
Investment Income, Net	284,823	96,218	67,969	324,367
Miscellaneous - net	(93,620)	(45,870)	(70,232)	(110,527)
TOTAL	219,573	87,517	62,061	289,225
INTEREST EXPENSE
Interest Expense, Debt	216,799	201,112	422,388	402,105
Allowance for borrowed funds used during construction	(12,143)	(16,811)	(27,587)	(34,260)
TOTAL	204,656	184,301	394,801	367,845
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	454,228	241,991	506,327	543,409
Income taxes	89,115	1,458	17,921	44,229
Consolidated net income	365,113	240,533	488,406	499,180
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	$ 4,580	$ 4,109	$ 9,159	$ 8,219
Earnings per average common share:
Basic (in dollars per share)	$ 1.80	$ 1.22	$ 2.40	$ 2.57
Diluted (in dollars per share)	$ 1.79	$ 1.22	$ 2.39	$ 2.54
Basic average number of common shares outstanding (in shares)	200,178,010	193,019,269	199,984,013	191,306,742
Diluted average number of common shares outstanding (in shares)	200,886,749	194,238,315	200,891,134	193,243,287
Net Income (Loss) Available to Common Stockholders, Basic	$ 360,533	$ 236,424	$ 479,247	$ 490,961
Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	2,190,557	2,345,727	4,241,196	4,466,751
Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	22,495	30,699	66,471	85,647
Competitive Businesses [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	199,736	289,783	532,300	723,394
Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	211,961	345,861	428,575	685,368
Entergy Mississippi [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	297,954	302,737	591,876	584,981
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	38,730	47,391	102,027	100,620
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	66,343	66,921	128,680	126,104
Taxes, Other	22,697	25,813	49,887	51,940
Other Depreciation and Amortization	52,296	39,718	103,451	78,806
Other regulatory charges (credits) - net	(6,496)	3,567	(10,377)	5,937
Costs and Expenses	230,249	257,130	482,990	508,582
OPERATING INCOME	67,705	45,607	108,886	76,399
OTHER INCOME
Allowance for equity funds used during construction	1,588	2,349	3,027	4,262
Investment Income, Net	135	397	255	549
Miscellaneous - net	(2,589)	(327)	(4,885)	(590)
TOTAL	(866)	2,419	(1,603)	4,221
INTEREST EXPENSE
Interest Expense, Debt	17,192	15,342	33,775	29,882
Allowance for borrowed funds used during construction	(634)	(1,006)	(1,185)	(1,791)
TOTAL	16,558	14,336	32,590	28,091
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	50,281	33,690	74,693	52,529
Income taxes	11,388	7,023	13,274	10,464
Consolidated net income	38,893	26,667	61,419	42,065
Entergy Mississippi [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	297,954	302,737	591,876	584,981
Entergy Mississippi [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Entergy Mississippi [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	56,679	73,720	109,322	145,175
Entergy Arkansas [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	491,767	542,929	973,679	1,088,741
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	52,692	108,596	140,103	260,755
Nuclear refueling outage expenses	13,552	17,194	29,799	34,442
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	164,770	188,006	316,627	354,466
Decommissioning	18,206	17,168	36,147	32,929
Taxes, Other	27,172	27,181	58,232	55,544
Other Depreciation and Amortization	84,538	77,061	168,059	152,908
Other regulatory charges (credits) - net	(19,283)	(10,336)	(39,284)	(9,891)
Costs and Expenses	383,818	473,155	797,895	976,496
OPERATING INCOME	107,949	69,774	175,784	112,245
OTHER INCOME
Allowance for equity funds used during construction	3,878	3,372	6,795	6,800
Investment Income, Net	8,246	4,222	16,184	10,405
Miscellaneous - net	(6,133)	(4,728)	(12,569)	(8,418)
TOTAL	5,991	2,866	10,410	8,787
INTEREST EXPENSE
Interest Expense, Debt	35,969	35,827	71,592	69,210
Allowance for borrowed funds used during construction	(1,703)	(1,329)	(2,984)	(2,743)
TOTAL	34,266	34,498	68,608	66,467
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	79,674	38,142	117,586	54,565
Income taxes	19,504	(12,157)	12,821	(34,855)
Consolidated net income	60,170	50,299	104,765	89,420
Entergy Arkansas [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	491,767	542,929	973,679	1,088,741
Entergy Arkansas [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Entergy Arkansas [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	42,171	48,285	88,212	95,343
Entergy Louisiana [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,011,652	1,106,317	1,942,299	2,065,647
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	161,610	220,472	306,102	367,821
Nuclear refueling outage expenses	13,654	13,391	27,284	26,199
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	226,216	250,835	448,874	476,723
Decommissioning	16,203	14,059	32,204	27,938
Taxes, Other	48,718	46,658	98,795	96,340
Other Depreciation and Amortization	154,255	130,246	299,390	256,380
Other regulatory charges (credits) - net	(19,202)	(33,878)	(8,070)	(61,538)
Costs and Expenses	755,240	864,797	1,519,108	1,670,183
OPERATING INCOME	256,412	241,520	423,191	395,464
OTHER INCOME
Allowance for equity funds used during construction	6,055	20,671	20,942	44,585
Investment Income, Net	93,807	49,498	74,138	121,484
Miscellaneous - net	(66,811)	(22,306)	(17,210)	(64,650)
TOTAL	33,051	47,863	77,870	101,419
INTEREST EXPENSE
Interest Expense, Debt	86,296	77,631	165,813	152,334
Allowance for borrowed funds used during construction	(3,202)	(9,737)	(10,334)	(21,104)
TOTAL	83,094	67,894	155,479	131,230
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	206,369	221,489	345,582	365,653
Income taxes	35,910	38,405	(14,273)	54,936
Consolidated net income	170,459	183,084	359,855	310,717
Earnings per average common share:
Net Income (Loss) Available to Common Stockholders, Basic	170,459	183,084	359,855	310,717
Entergy Louisiana [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,001,601	1,094,259	1,914,142	2,030,952
Entergy Louisiana [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	10,051	12,058	28,157	34,695
Entergy Louisiana [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	153,786	223,014	314,529	480,320
Entergy New Orleans [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	147,343	175,793	296,645	338,987
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	16,836	27,190	44,331	57,950
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	29,126	32,252	59,830	62,550
Taxes, Other	15,642	13,135	28,848	26,677
Other Depreciation and Amortization	15,626	14,226	30,701	28,390
Other regulatory charges (credits) - net	4,526	4,500	(1,210)	2,145
Costs and Expenses	139,741	158,284	276,952	305,342
OPERATING INCOME	7,602	17,509	19,693	33,645
OTHER INCOME
Allowance for equity funds used during construction	2,048	2,686	4,533	4,976
Investment Income, Net	43	64	96	243
Miscellaneous - net	168	(942)	(570)	(2,448)
TOTAL	2,259	1,808	4,059	2,771
INTEREST EXPENSE
Interest Expense, Debt	7,635	6,019	14,275	11,955
Allowance for borrowed funds used during construction	(985)	(1,073)	(2,180)	(1,987)
TOTAL	6,650	4,946	12,095	9,968
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	3,211	14,371	11,657	26,448
Income taxes	(1,718)	1,368	(4,458)	4,422
Consolidated net income	4,929	13,003	16,115	22,026
Entergy New Orleans [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	134,899	157,152	258,330	288,035
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	12,444	18,641	38,315	50,952
Entergy New Orleans [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	57,985	66,981	114,452	127,630
Entergy Texas [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	372,194	363,580	711,530	704,054
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	47,790	16,971	89,136	65,074
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	60,527	61,426	119,460	121,052
Taxes, Other	20,524	21,263	39,796	39,903
Other Depreciation and Amortization	43,835	37,312	86,401	74,349
Other regulatory charges (credits) - net	18,724	19,453	40,092	38,912
Costs and Expenses	315,751	327,558	619,027	651,291
OPERATING INCOME	56,443	36,022	92,503	52,763
OTHER INCOME
Allowance for equity funds used during construction	11,601	6,413	22,242	11,494
Investment Income, Net	343	374	772	2,056
Miscellaneous - net	(791)	1,228	(1,137)	865
TOTAL	11,153	8,015	21,877	14,415
INTEREST EXPENSE
Interest Expense, Debt	23,137	20,153	45,995	42,613
Allowance for borrowed funds used during construction	(4,985)	(3,256)	(9,558)	(5,836)
TOTAL	18,152	16,897	36,437	36,777
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	49,444	27,140	77,943	30,401
Income taxes	2,576	(11,796)	(1,632)	(29,877)
Consolidated net income	46,868	38,936	79,575	60,278
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	471	0	941	0
Earnings per average common share:
Net Income (Loss) Available to Common Stockholders, Basic	46,397	38,936	78,634	60,278
Entergy Texas [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	372,194	363,580	711,530	704,054
Entergy Texas [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Entergy Texas [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	124,351	171,133	244,142	312,001
System Energy [Member]
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	6,008	21,026	19,151	42,587
Nuclear refueling outage expenses	5,666	8,415	13,938	16,601
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	42,802	52,468	83,273	97,750
Decommissioning	9,248	8,888	18,405	17,687
Taxes, Other	7,105	7,176	15,078	14,715
Other Depreciation and Amortization	27,501	26,574	54,400	53,148
Other regulatory charges (credits) - net	(3,517)	(9,838)	(14,077)	(19,043)
Costs and Expenses	94,813	114,709	190,168	223,445
OPERATING INCOME	31,236	24,300	66,545	55,668
OTHER INCOME
Allowance for equity funds used during construction	3,200	1,678	6,784	3,267
Investment Income, Net	12,108	6,371	17,446	13,362
Miscellaneous - net	(2,157)	(1,490)	(4,617)	(2,718)
TOTAL	13,151	6,559	19,613	13,911
INTEREST EXPENSE
Interest Expense, Debt	8,534	8,524	17,074	17,921
Allowance for borrowed funds used during construction	(634)	(410)	(1,345)	(799)
TOTAL	7,900	8,114	15,729	17,122
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	36,487	22,745	70,429	52,457
Income taxes	7,496	(1,727)	12,925	4,407
Consolidated net income	28,991	24,472	57,504	48,050
Earnings per average common share:
Net Income (Loss) Available to Common Stockholders, Basic	28,991	24,472	57,504	48,050
System Energy [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	$ 126,049	$ 139,009	$ 256,713	$ 279,113