Revenue Recognition Revenue Recognition (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue from Contract with Customer, Excluding Assessed Tax	$ 11,742,896	$ 10,113,636	$ 10,878,673
Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	10,873,995	9,046,643	9,429,978
Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	170,610	124,008	153,954
Competitive Businesses [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	698,291	942,985	1,294,741
Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	3,981,846	3,550,317	3,531,500
Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,610,207	2,292,740	2,475,586
Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,942,370	2,331,170	2,541,287
Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	245,685	212,131	228,470
Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	601,895	295,810	285,722
Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	375,312	348,102	343,143
Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	10,757,315	9,030,270	9,405,708
Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	116,680	16,373	24,270
Non-Customer [Member] | Competitive Businesses [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	25,798	171,625	130,189
Competitive Business Sales [Member] | Competitive Businesses [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	672,493	771,360	1,164,552
Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	9,780,108	8,386,358	8,776,843
Entergy Arkansas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,338,590	2,084,494	2,259,594
Entergy Arkansas [Member] | Electricity [Member]
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]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Entergy Arkansas [Member] | Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	882,773	841,162	795,269
Entergy Arkansas [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	480,401	466,273	538,850
Entergy Arkansas [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	496,661	461,907	520,958
Entergy Arkansas [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	19,112	18,011	20,795
Entergy Arkansas [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	311,791	173,115	257,864
Entergy Arkansas [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	130,443	109,642	112,618
Entergy Arkansas [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,321,181	2,070,110	2,246,354
Entergy Arkansas [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	17,409	14,384	13,240
Entergy Arkansas [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,878,947	1,787,353	1,875,872
Entergy Louisiana [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	5,068,448	4,069,862	4,285,175
Entergy Louisiana [Member] | Electricity [Member]
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]
Revenue from Contract with Customer, Excluding Assessed Tax	73,989	50,799	62,148
Entergy Louisiana [Member] | Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,484,612	1,270,187	1,270,478
Entergy Louisiana [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,055,825	886,548	947,412
Entergy Louisiana [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,771,311	1,314,234	1,450,966
Entergy Louisiana [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	82,503	68,901	71,046
Entergy Louisiana [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	391,424	333,594	333,395
Entergy Louisiana [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	148,304	141,004	135,783
Entergy Louisiana [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,933,979	4,014,468	4,209,080
Entergy Louisiana [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	60,480	4,595	13,947
Entergy Louisiana [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,394,251	3,539,870	3,739,902
Entergy Mississippi [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,406,346	1,247,854	1,323,043
Entergy Mississippi [Member] | Electricity [Member]
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]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Entergy Mississippi [Member] | Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	578,258	523,379	562,219
Entergy Mississippi [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	439,950	395,875	444,173
Entergy Mississippi [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	150,698	145,100	164,491
Entergy Mississippi [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	46,248	41,955	44,300
Entergy Mississippi [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	124,632	77,530	39,295
Entergy Mississippi [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	58,357	54,590	58,269
Entergy Mississippi [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,398,143	1,238,429	1,312,747
Entergy Mississippi [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	8,203	9,425	10,296
Entergy Mississippi [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,215,154	1,106,309	1,215,183
Entergy New Orleans [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	768,852	633,841	686,223
Entergy New Orleans [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	672,231	560,632	594,417
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	96,621	73,209	91,806
Entergy New Orleans [Member] | Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	269,891	243,502	245,081
Entergy New Orleans [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	208,104	179,406	202,138
Entergy New Orleans [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	30,751	24,248	31,824
Entergy New Orleans [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	71,584	59,819	70,865
Entergy New Orleans [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	88,349	33,213	38,626
Entergy New Orleans [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,813	8,294	9,842
Entergy New Orleans [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	670,492	548,482	598,376
Entergy New Orleans [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,739	12,150	(3,959)
Entergy New Orleans [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	580,330	506,975	549,908
Entergy Texas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,902,511	1,587,125	1,488,955
Entergy Texas [Member] | Electricity [Member]
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]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Entergy Texas [Member] | Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	766,312	672,087	658,453
Entergy Texas [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	425,927	364,638	343,013
Entergy Texas [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	492,949	385,681	373,048
Entergy Texas [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	26,238	23,445	21,464
Entergy Texas [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	145,719	100,273	59,074
Entergy Texas [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	41,805	39,981	32,424
Entergy Texas [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,898,950	1,586,105	1,487,476
Entergy Texas [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	3,561	1,020	1,479
Entergy Texas [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,711,426	1,445,851	1,395,978
System Energy [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 570,848	$ 495,458	$ 573,410