Consolidated Statements Of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	$ 11,742,896	$ 10,113,636	$ 10,878,673
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	2,458,096	1,564,371	2,029,638
Nuclear refueling outage expenses	172,636	184,157	204,927
Operation and maintenance expense	2,968,621	3,002,626	3,272,381
Asset Impairment Charges	263,625	26,623	290,027
Decommissioning	306,411	381,861	400,802
Taxes, Other	660,290	652,840	643,745
Other Depreciation and Amortization	1,684,286	1,613,086	1,480,016
Other regulatory charges (credits) - net	111,628	14,609	(26,220)
Costs and Expenses	9,897,270	8,344,441	9,488,176
Operating income (loss)	1,845,626	1,769,195	1,390,497
OTHER INCOME
Allowance for equity funds used during construction	70,473	119,430	144,974
Investment Income, Net	430,466	392,818	547,912
Miscellaneous - net	(201,778)	(210,633)	(252,539)
TOTAL	299,161	301,615	440,347
INTEREST EXPENSE
Interest expense	863,712	837,981	807,382
Allowance for borrowed funds used during construction	(29,018)	(52,318)	(64,957)
TOTAL	834,694	785,663	742,425
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	1,310,093	1,285,147	1,088,419
Income Tax Expense (Benefit)	191,374	(121,506)	(169,825)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,118,719	1,406,653	1,258,244
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	227	18,319	17,018
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,118,492	$ 1,388,334	$ 1,241,226
Earnings per average common share:
Basic (in usd per share)	$ 5.57	$ 6.94	$ 6.36
Diluted (in usd per share)	$ 5.54	$ 6.90	$ 6.30
Basic average number of common shares outstanding	200,941,511	200,106,945	195,195,858
Diluted average number of common shares outstanding	201,873,024	201,102,220	196,999,284
Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	$ 10,873,995	$ 9,046,643	$ 9,429,978
Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	170,610	124,008	153,954
Competitive Businesses [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	698,291	942,985	1,294,741
Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	1,271,677	904,268	1,192,860
Entergy Arkansas [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	2,338,590	2,084,494	2,259,594
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	347,166	271,896	458,907
Nuclear refueling outage expenses	51,141	55,737	68,769
Operation and maintenance expense	687,418	669,518	720,217
Decommissioning	77,696	73,319	68,030
Taxes, Other	127,249	121,057	115,869
Other Depreciation and Amortization	361,479	338,029	307,351
Other regulatory charges (credits) - net	(31,501)	(35,310)	(11,186)
Costs and Expenses	1,901,152	1,681,936	1,932,597
Operating income (loss)	437,438	402,558	326,997
OTHER INCOME
Allowance for equity funds used during construction	15,273	15,019	15,499
Investment Income, Net	76,953	35,579	26,020
Miscellaneous - net	(22,278)	(21,908)	(18,566)
TOTAL	69,948	28,690	22,953
INTEREST EXPENSE
Interest expense	140,348	144,834	140,087
Allowance for borrowed funds used during construction	(6,641)	(6,595)	(6,332)
TOTAL	133,707	138,239	133,755
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	373,679	293,009	216,195
Income Tax Expense (Benefit)	75,195	47,777	(46,769)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	298,484	245,232	262,964
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	(18,092)	0	0
Net Income (Loss) Available to Common Stockholders, Basic	316,576	245,232	262,964
Entergy Arkansas [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	2,338,590	2,084,494	2,259,594
Entergy Arkansas [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Entergy Arkansas [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	280,504	187,690	204,640
Entergy Louisiana [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	5,068,448	4,069,862	4,285,175
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	1,302,291	700,152	845,108
Nuclear refueling outage expenses	49,373	55,305	54,170
Operation and maintenance expense	1,034,427	969,630	994,637
Decommissioning	68,575	65,225	59,346
Taxes, Other	224,079	208,902	194,222
Other Depreciation and Amortization	656,132	609,931	535,791
Other regulatory charges (credits) - net	38,245	(584)	(105,203)
Costs and Expenses	4,141,668	3,205,041	3,388,533
Operating income (loss)	926,780	864,821	896,642
OTHER INCOME
Allowance for equity funds used during construction	28,648	38,151	74,023
Investment Income, Net	282,200	225,627	231,985
Miscellaneous - net	(125,886)	(116,366)	(115,427)
TOTAL	184,962	147,412	190,581
INTEREST EXPENSE
Interest expense	350,227	331,352	309,493
Allowance for borrowed funds used during construction	(12,878)	(19,147)	(35,430)
TOTAL	337,349	312,205	274,063
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	774,393	700,028	813,160
Income Tax Expense (Benefit)	120,409	(382,324)	121,623
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	653,984	1,082,352	691,537
Net Income (Loss) Available to Common Stockholders, Basic	653,984	1,082,352	691,537
Entergy Louisiana [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	4,994,459	4,019,063	4,223,027
Entergy Louisiana [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	73,989	50,799	62,148
Entergy Louisiana [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	768,546	596,480	810,462
Entergy Mississippi [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,406,346	1,247,854	1,323,043
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	181,511	187,087	277,425
Operation and maintenance expense	298,129	288,543	266,175
Taxes, Other	111,712	101,525	105,318
Other Depreciation and Amortization	226,545	209,252	170,886
Other regulatory charges (credits) - net	5,913	(15,219)	14,993
Costs and Expenses	1,121,844	1,011,659	1,119,289
Operating income (loss)	284,502	236,195	203,754
OTHER INCOME
Allowance for equity funds used during construction	8,101	6,726	8,356
Investment Income, Net	53	272	1,412
Miscellaneous - net	(8,791)	(9,253)	(4,478)
TOTAL	(637)	(2,255)	5,290
INTEREST EXPENSE
Interest expense	75,124	68,945	61,785
Allowance for borrowed funds used during construction	(3,416)	(2,778)	(3,532)
TOTAL	71,708	66,167	58,253
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	212,157	167,773	150,791
Income Tax Expense (Benefit)	45,323	27,190	30,866
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	166,834	140,583	119,925
Entergy Mississippi [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,406,346	1,247,854	1,323,043
Entergy Mississippi [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Entergy Mississippi [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	298,034	240,471	284,492
Entergy New Orleans [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	768,852	633,841	686,223
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	150,018	76,781	105,217
Operation and maintenance expense	145,377	125,756	121,057
Taxes, Other	53,569	57,454	55,270
Other Depreciation and Amortization	73,480	64,012	56,072
Other regulatory charges (credits) - net	13,177	1,854	21,616
Costs and Expenses	704,189	569,429	617,538
Operating income (loss)	64,663	64,412	68,685
OTHER INCOME
Allowance for equity funds used during construction	2,371	6,339	9,941
Investment Income, Net	48	120	428
Miscellaneous - net	(1,240)	316	(6,038)
TOTAL	1,179	6,775	4,331
INTEREST EXPENSE
Interest expense	29,164	29,105	24,463
Allowance for borrowed funds used during construction	(1,056)	(3,049)	(4,262)
TOTAL	28,108	26,056	20,201
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	37,734	45,131	52,815
Income Tax Expense (Benefit)	5,936	(4,207)	186
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	31,798	49,338	52,629
Entergy New Orleans [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	672,231	560,632	594,417
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	96,621	73,209	91,806
Entergy New Orleans [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	268,568	243,572	258,306
Entergy Texas [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,902,511	1,587,125	1,488,955
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	335,742	238,428	162,544
Operation and maintenance expense	281,713	250,170	258,924
Taxes, Other	94,989	72,909	76,366
Other Depreciation and Amortization	214,838	177,738	153,286
Other regulatory charges (credits) - net	59,581	90,398	88,770
Costs and Expenses	1,575,804	1,340,276	1,342,453
Operating income (loss)	326,707	246,849	146,502
OTHER INCOME
Allowance for equity funds used during construction	9,892	44,073	28,445
Investment Income, Net	837	1,201	3,072
Miscellaneous - net	721	(28)	546
TOTAL	11,450	45,246	32,063
INTEREST EXPENSE
Interest expense	87,787	92,920	86,333
Allowance for borrowed funds used during construction	(3,980)	(18,940)	(13,269)
TOTAL	83,807	73,980	73,064
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	254,350	218,115	105,501
Income Tax Expense (Benefit)	25,526	3,042	(53,896)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	228,824	215,073	159,397
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	1,909	1,882	580
Net Income (Loss) Available to Common Stockholders, Basic	226,915	213,191	158,817
Entergy Texas [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	1,902,511	1,587,125	1,488,955
Entergy Texas [Member] | Natural Gas, US Regulated [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Entergy Texas [Member] | Electricity, Purchased [Member]
Operation and Maintenance:
Cost of Goods and Services Sold	588,941	510,633	602,563
System Energy [Member]
Operation and Maintenance:
Fuel, fuel-related expenses, and gas purchased for resale	58,313	23,026	82,438
Nuclear refueling outage expenses	27,244	27,737	33,376
Operation and maintenance expense	214,322	178,249	206,444
Decommissioning	38,693	37,181	35,729
Taxes, Other	27,842	28,657	29,018
Other Depreciation and Amortization	105,978	110,395	106,630
Other regulatory charges (credits) - net	26,214	(26,531)	(35,210)
Costs and Expenses	498,606	378,714	458,425
Operating income (loss)	72,242	116,744	114,985
OTHER INCOME
Allowance for equity funds used during construction	6,188	9,122	8,709
Investment Income, Net	82,744	36,478	29,488
Miscellaneous - net	(18,991)	(10,012)	(5,516)
TOTAL	69,941	35,588	32,681
INTEREST EXPENSE
Interest expense	38,393	34,467	35,328
Allowance for borrowed funds used during construction	(1,047)	(1,809)	(2,131)
TOTAL	37,346	32,658	33,197
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	104,837	119,674	114,469
Income Tax Expense (Benefit)	(1,977)	20,543	15,349
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	106,814	99,131	99,120
Net Income (Loss) Available to Common Stockholders, Basic	106,814	99,131	99,120
System Energy [Member] | Electricity [Member]
REVENUES
Revenue from Contract with Customer, Excluding Assessed Tax	$ 570,848	$ 495,458	$ 573,410