Revenue (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues	$ 12,946,686	$ 11,879,653	$ 12,147,412
Electricity, US Regulated [Member]
Revenue Not from Contract with Customer	47,294	60,075	132,628
Revenues	12,775,314	11,627,732	11,842,454
Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	112,607	178,070	180,490
Revenues	112,607	178,070	180,490
Product and Service, Other [Member]
Revenues	58,765	73,851	124,468
Residential [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	4,819,531	4,509,553	4,552,804
Commercial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	3,113,791	2,952,398	2,997,888
Industrial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	3,602,300	3,197,835	3,170,090
Governmental [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	276,145	268,222	270,640
Billed Retail [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	11,811,767	10,928,008	10,991,422
Sales for Resale [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	397,507	278,700	366,348
Other Electric [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	518,746	360,949	352,056
Customer [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	12,728,020	11,567,657	11,709,826
Entergy Arkansas [Member]
Revenues	2,784,047	2,460,181	2,646,396
Entergy Arkansas [Member] \| Electricity, US Regulated [Member]
Revenue Not from Contract with Customer	15,271	15,299	18,378
Revenues	2,784,047	2,460,181	2,646,396
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, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,064,749	999,641	996,760
Entergy Arkansas [Member] \| Commercial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	597,511	571,574	584,304
Entergy Arkansas [Member] \| Industrial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	733,895	632,144	635,472
Entergy Arkansas [Member] \| Governmental [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	19,556	18,622	20,409
Entergy Arkansas [Member] \| Billed Retail [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,415,711	2,221,981	2,236,945
Entergy Arkansas [Member] \| Sales for Resale [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	212,628	169,409	269,648
Entergy Arkansas [Member] \| Other Electric [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	140,437	53,492	121,425
Entergy Arkansas [Member] \| Customer [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,768,776	2,444,882	2,628,018
Entergy Louisiana [Member]
Revenues	5,732,099	5,144,018	5,147,770
Entergy Louisiana [Member] \| Electricity, US Regulated [Member]
Revenue Not from Contract with Customer	(892)	23,825	79,415
Revenues	5,687,813	5,068,158	5,073,239
Entergy Louisiana [Member] \| Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	44,286	75,860	74,531
Revenues	44,286	75,860	74,531
Entergy Louisiana [Member] \| Residential [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,694,005	1,554,400	1,576,129
Entergy Louisiana [Member] \| Commercial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,195,517	1,100,309	1,104,509
Entergy Louisiana [Member] \| Industrial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,067,674	1,781,615	1,720,298
Entergy Louisiana [Member] \| Governmental [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	90,585	85,537	83,736
Entergy Louisiana [Member] \| Billed Retail [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	5,047,781	4,521,861	4,484,672
Entergy Louisiana [Member] \| Sales for Resale [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	434,436	335,375	357,900
Entergy Louisiana [Member] \| Other Electric [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	206,488	187,097	151,252
Entergy Louisiana [Member] \| Customer [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	5,688,705	5,044,333	4,993,824
Entergy Mississippi [Member]
Revenues	1,955,705	1,764,593	1,802,533
Entergy Mississippi [Member] \| Electricity, US Regulated [Member]
Revenue Not from Contract with Customer	20,047	9,876	17,559
Revenues	1,955,705	1,764,593	1,802,533
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, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	774,235	724,601	748,428
Entergy Mississippi [Member] \| Commercial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	609,578	577,484	604,343
Entergy Mississippi [Member] \| Industrial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	222,997	195,194	217,916
Entergy Mississippi [Member] \| Governmental [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	59,584	56,420	60,477
Entergy Mississippi [Member] \| Billed Retail [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,666,394	1,553,699	1,631,164
Entergy Mississippi [Member] \| Sales for Resale [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	162,380	128,781	104,058
Entergy Mississippi [Member] \| Other Electric [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	106,884	72,237	49,752
Entergy Mississippi [Member] \| Customer [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	1,935,658	1,754,717	1,784,974
Entergy New Orleans [Member]
Revenues	772,214	810,564	843,933
Entergy New Orleans [Member] \| Electricity, US Regulated [Member]
Revenue Not from Contract with Customer	6,553	6,244	14,242
Revenues	703,893	708,354	737,974
Entergy New Orleans [Member] \| Natural Gas, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	68,321	102,210	105,959
Revenues	68,321	102,210	105,959
Entergy New Orleans [Member] \| Residential [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	311,872	308,757	317,188
Entergy New Orleans [Member] \| Commercial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	221,835	229,648	235,193
Entergy New Orleans [Member] \| Industrial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	28,261	29,821	31,831
Entergy New Orleans [Member] \| Governmental [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	76,553	79,060	77,152
Entergy New Orleans [Member] \| Billed Retail [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	638,521	647,286	661,364
Entergy New Orleans [Member] \| Sales for Resale [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	53,010	48,042	63,360
Entergy New Orleans [Member] \| Other Electric [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	5,809	6,782	(992)
Entergy New Orleans [Member] \| Customer [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	697,340	702,110	723,732
Entergy Texas [Member]
Revenues	2,127,584	2,050,150	2,028,586
Entergy Texas [Member] \| Electricity, US Regulated [Member]
Revenue Not from Contract with Customer	6,276	3,085	4,824
Revenues	2,127,584	2,050,150	2,028,586
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, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	974,670	922,154	914,299
Entergy Texas [Member] \| Commercial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	489,350	473,383	469,539
Entergy Texas [Member] \| Industrial [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	549,473	559,061	564,573
Entergy Texas [Member] \| Governmental [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	29,867	28,583	28,866
Entergy Texas [Member] \| Billed Retail [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	2,043,360	1,983,181	1,977,277
Entergy Texas [Member] \| Sales for Resale [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	13,448	17,174	10,497
Entergy Texas [Member] \| Other Electric [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	64,500	46,710	35,988
Entergy Texas [Member] \| Customer [Member] \| Electricity, US Regulated [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 2,121,308	$ 2,047,065	$ 2,023,762