Revenue (Schedule of Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Disaggregation of Revenue [Line Items]
Revenues	$ 3,812,019	$ 3,389,100	$ 9,987,742	$ 9,137,348
Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenues	864,063	662,148	2,175,261	1,892,991
Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,633,197	1,478,093	4,444,807	3,956,657
Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenues	577,132	508,171	1,492,716	1,365,921
Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenues	220,298	232,515	611,353	624,817
Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenues	640,291	596,998	1,613,871	1,560,566
Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue Not from Contract with Customer	26,281	13,163	37,619	40,125
Revenues	3,797,177	3,337,820	9,829,988	8,950,373
Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue Not from Contract with Customer	2,596	2,350	6,887	7,154
Revenues	864,063	662,148	2,175,261	1,892,991
Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue Not from Contract with Customer	4,311	6,697	4,091	20,140
Revenues	1,633,050	1,464,627	4,400,500	3,898,864
Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue Not from Contract with Customer	17,586	2,557	22,333	7,443
Revenues	577,132	508,171	1,492,716	1,365,921
Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue Not from Contract with Customer	1,897	1,816	4,737	4,550
Revenues	220,290	213,663	542,996	549,268
Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue Not from Contract with Customer	(125)	24	(461)	(81)
Revenues	640,291	596,998	1,613,871	1,560,566
Natural Gas, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	155	32,318	112,664	133,342
Revenues	155	32,318	112,664	133,342
Natural Gas, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Natural Gas, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	147	13,466	44,307	57,793
Revenues	147	13,466	44,307	57,793
Natural Gas, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Natural Gas, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8	18,852	68,357	75,549
Revenues	8	18,852	68,357	75,549
Natural Gas, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Product and Service, Other [Member]
Disaggregation of Revenue [Line Items]
Revenues	14,687	18,962	45,090	53,633
Residential [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,572,450	1,468,705	3,776,790	3,548,881
Residential [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	359,366	325,128	846,238	805,702
Residential [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	543,879	514,131	1,330,410	1,213,133
Residential [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	241,786	227,867	600,669	569,533
Residential [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	107,461	106,079	246,430	245,598
Residential [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	319,958	295,500	753,043	714,915
Commercial [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	924,677	855,823	2,379,782	2,260,956
Commercial [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	184,715	169,242	457,800	443,499
Commercial [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	351,663	319,065	921,779	841,630
Commercial [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	181,937	170,093	464,863	444,584
Commercial [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	64,068	64,957	169,822	175,542
Commercial [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	142,294	132,466	365,518	355,701
Industrial [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,014,161	870,576	2,734,181	2,412,254
Industrial [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	229,183	183,636	552,803	471,829
Industrial [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	560,165	475,890	1,596,175	1,355,907
Industrial [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	62,651	52,802	163,625	148,409
Industrial [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8,064	8,148	21,518	22,727
Industrial [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	154,098	150,100	400,060	413,382
Governmental [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	75,715	71,482	209,156	202,655
Governmental [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5,739	5,117	14,869	14,250
Governmental [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	24,034	21,868	69,324	64,912
Governmental [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	16,688	15,495	44,921	42,886
Governmental [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21,156	21,763	58,342	59,284
Governmental [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8,098	7,239	21,700	21,323
Billed Retail [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,587,003	3,266,586	9,099,909	8,424,746
Billed Retail [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	779,003	683,123	1,871,710	1,735,280
Billed Retail [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,479,741	1,330,954	3,917,688	3,475,582
Billed Retail [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	503,062	466,257	1,274,078	1,205,412
Billed Retail [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	200,749	200,947	496,112	503,151
Billed Retail [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	624,448	585,305	1,540,321	1,505,321
Sales for Resale [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	109,255	69,288	307,585	202,871
Sales for Resale [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	60,582	48,078	181,842	130,885
Sales for Resale [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	117,807	86,563	338,599	250,114
Sales for Resale [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	43,811	25,995	133,621	95,188
Sales for Resale [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	20,427	8,627	34,343	29,702
Sales for Resale [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,950	6,189	10,542	11,111
Other Electric [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	74,638	(11,217)	384,875	282,631
Other Electric [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21,882	(71,403)	114,822	19,672
Other Electric [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	31,191	40,413	140,122	153,028
Other Electric [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	12,673	13,362	62,684	57,878
Other Electric [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(2,783)	2,273	7,804	11,865
Other Electric [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,018	5,480	63,469	44,215
Customer [Member] | Electricity, US Regulated [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,770,896	3,324,657	9,792,369	8,910,248
Customer [Member] | Electricity, US Regulated [Member] | Entergy Arkansas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	861,467	659,798	2,168,374	1,885,837
Customer [Member] | Electricity, US Regulated [Member] | Entergy Louisiana [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,628,739	1,457,930	4,396,409	3,878,724
Customer [Member] | Electricity, US Regulated [Member] | Entergy Mississippi [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	559,546	505,614	1,470,383	1,358,478
Customer [Member] | Electricity, US Regulated [Member] | Entergy New Orleans [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	218,393	211,847	538,259	544,718
Customer [Member] | Electricity, US Regulated [Member] | Entergy Texas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 640,416	$ 596,974	$ 1,614,332	$ 1,560,647