Revenue Recognition Revenue Recognition (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from Contract with Customer, Excluding Assessed Tax	$ 12,147,412	$ 13,764,237	$ 11,742,896
Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	11,842,454	13,186,845	10,873,995
Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	180,490	233,920	170,610
Other [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	124,468	343,472	698,291
Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,552,804	4,640,039	3,981,846
Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,997,888	3,087,675	2,610,207
Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	3,170,090	3,716,058	2,942,370
Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	270,640	286,605	245,685
Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	366,348	858,743	601,895
Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	352,056	481,256	375,312
Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	11,709,826	13,070,376	10,757,315
Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	132,628	116,469	116,680
Non-Customer [Member] | Other [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	124,468	343,472	698,291
Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	10,991,422	11,730,377	9,780,108
Entergy Arkansas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,646,396	2,673,194	2,338,590
Entergy Arkansas [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,646,396	2,673,194	2,338,590
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	996,760	946,719	882,773
Entergy Arkansas [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	584,304	530,512	480,401
Entergy Arkansas [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	635,472	559,147	496,661
Entergy Arkansas [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	20,409	20,186	19,112
Entergy Arkansas [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	269,648	443,685	311,791
Entergy Arkansas [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	121,425	159,178	130,443
Entergy Arkansas [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,628,018	2,659,427	2,321,181
Entergy Arkansas [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	18,378	13,767	17,409
Entergy Arkansas [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,236,945	2,056,564	1,878,947
Entergy Louisiana [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	5,147,770	6,338,768	5,068,448
Entergy Louisiana [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	5,073,239	6,246,933	4,994,459
Entergy Louisiana [Member] | Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	74,531	91,835	73,989
Entergy Louisiana [Member] | Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,576,129	1,775,552	1,484,612
Entergy Louisiana [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,104,509	1,274,665	1,055,825
Entergy Louisiana [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,720,298	2,275,978	1,771,311
Entergy Louisiana [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	83,736	94,910	82,503
Entergy Louisiana [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	357,900	555,640	391,424
Entergy Louisiana [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	151,252	204,878	148,304
Entergy Louisiana [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,993,824	6,181,623	4,933,979
Entergy Louisiana [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	79,415	65,310	60,480
Entergy Louisiana [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,484,672	5,421,105	4,394,251
Entergy Mississippi [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,802,533	1,624,234	1,406,346
Entergy Mississippi [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,802,533	1,624,234	1,406,346
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	748,428	651,455	578,258
Entergy Mississippi [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	604,343	508,996	439,950
Entergy Mississippi [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	217,916	182,270	150,698
Entergy Mississippi [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	60,477	52,861	46,248
Entergy Mississippi [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	104,058	167,867	124,632
Entergy Mississippi [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	49,752	51,554	58,357
Entergy Mississippi [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,784,974	1,615,003	1,398,143
Entergy Mississippi [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	17,559	9,231	8,203
Entergy Mississippi [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,631,164	1,395,582	1,215,154
Entergy New Orleans [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	843,933	997,333	768,852
Entergy New Orleans [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	737,974	855,248	672,231
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	105,959	142,085	96,621
Entergy New Orleans [Member] | Residential [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	317,188	335,471	269,891
Entergy New Orleans [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	235,193	256,963	208,104
Entergy New Orleans [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	31,831	36,970	30,751
Entergy New Orleans [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	77,152	87,514	71,584
Entergy New Orleans [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	63,360	120,851	88,349
Entergy New Orleans [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	(992)	13,637	1,813
Entergy New Orleans [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	723,732	851,406	670,492
Entergy New Orleans [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	14,242	3,842	1,739
Entergy New Orleans [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	661,364	716,918	580,330
Entergy Texas [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,028,586	2,288,905	1,902,511
Entergy Texas [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,028,586	2,288,905	1,902,511
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	914,299	930,842	766,312
Entergy Texas [Member] | Commercial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	469,539	516,539	425,927
Entergy Texas [Member] | Industrial [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	564,573	661,693	492,949
Entergy Texas [Member] | Governmental [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	28,866	31,134	26,238
Entergy Texas [Member] | Sales for Resale [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	10,497	66,782	145,719
Entergy Texas [Member] | Other Electric [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	35,988	57,379	41,805
Entergy Texas [Member] | Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,023,762	2,264,369	1,898,950
Entergy Texas [Member] | Non-Customer [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,824	24,536	3,561
Entergy Texas [Member] | Billed Retail [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,977,277	2,140,208	1,711,426
System Energy [Member] | Electricity [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 586,603	$ 658,812	$ 570,848