Consolidated Statements Of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Revenues [Abstract]
Revenues	$ 12,946,686	$ 11,879,653	$ 12,147,412
Operating Costs and Expenses [Abstract]
Utilities Operating Expense, Fuel Used	2,359,403	2,256,874	2,801,580
Utilities Operating Expense, Purchased Power	1,240,998	839,236	968,036
Nuclear Refueling Outage Expenses	113,429	147,019	150,147
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	3,055,097	2,898,237	2,898,213
Asset Impairment Charges	12,795	107,134	42,679
Accretion Expense, Including Asset Retirement Obligations	227,876	220,080	206,674
Taxes, Other	818,664	752,948	755,574
Cost, Depreciation and Amortization	2,077,692	2,013,168	1,845,003
Other Regulatory Charges (Credits) - Net	(161,546)	(6,133)	(138,469)
Costs and Expenses, Total	9,744,408	9,228,563	9,529,437
Operating Income (Loss), Total	3,202,278	2,651,090	2,617,975
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	180,726	133,046	98,493
Investment Income, Net	317,348	298,865	162,726
Other Nonoperating Income (Expense)	(92,421)	(489,970)	(201,013)
Nonoperating Income (Expense), Total	405,653	(58,059)	60,206
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	1,412,955	1,203,588	1,046,164
Public Utilities, Allowance for Funds Used During Construction, Additions	76,304	52,768	39,758
Interest Expense, Nonoperating	1,336,651	1,150,820	1,006,406
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	2,271,280	1,442,211	1,671,775
Income Tax Expense (Benefit)	497,952	381,027	(690,535)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,773,328	1,061,184	2,362,310
Preferred dividend requirements of subsidiaries and net income (loss) attributable to noncontrolling interests	15,056	5,594	5,774
Net Income (Loss) Available to Common Stockholders, Basic, Total	$ 1,758,272	$ 1,055,590	$ 2,356,536
Earnings Per Share [Abstract]
Earnings Per Share, Basic	$ 3.98	$ 2.47	$ 5.57
Earnings Per Share, Diluted	$ 3.91	$ 2.45	$ 5.55
Weighted Average Number of Shares Outstanding, Basic	442,029,481	427,713,121	423,139,862
Weighted Average Number of Shares Outstanding, Diluted	450,151,884	431,581,696	424,752,990
Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	$ 12,775,314	$ 11,627,732	$ 11,842,454
Natural Gas, US Regulated [Member]
Revenues [Abstract]
Revenues	112,607	178,070	180,490
Product and Service, Other [Member]
Revenues [Abstract]
Revenues	58,765	73,851	124,468
Entergy Arkansas [Member]
Revenues [Abstract]
Revenues	2,784,047	2,460,181	2,646,396
Operating Costs and Expenses [Abstract]
Utilities Operating Expense, Fuel Used	352,535	274,282	514,885
Utilities Operating Expense, Purchased Power	248,901	239,281	257,890
Nuclear Refueling Outage Expenses	43,177	51,840	59,973
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	778,445	742,573	737,649
Asset Impairment Charges	0	131,775	78,434
Accretion Expense, Including Asset Retirement Obligations	100,701	93,582	87,321
Taxes, Other	164,045	141,225	141,502
Cost, Depreciation and Amortization	463,802	422,767	400,944
Other Regulatory Charges (Credits) - Net	(62,186)	(152,834)	(87,409)
Costs and Expenses, Total	2,089,420	1,944,491	2,191,189
Operating Income (Loss), Total	694,627	515,690	455,207
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	24,349	29,569	20,587
Investment Income, Net	67,375	70,628	25,024
Other Nonoperating Income (Expense)	(10,536)	(17,995)	(23,216)
Nonoperating Income (Expense), Total	81,188	82,202	22,395
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	242,216	218,281	188,232
Public Utilities, Allowance for Funds Used During Construction, Additions	11,734	14,429	8,270
Interest Expense, Nonoperating	230,482	203,852	179,962
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	545,333	394,040	297,640
Income Tax Expense (Benefit)	107,880	74,574	(99,210)
Net Income (Loss)	440,532	324,766	402,081
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	437,453	319,466	396,850
Net Income (Loss) Attributable to Noncontrolling Interest	(3,079)	(5,300)	(5,231)
Entergy Arkansas [Member] | Affiliated Entity [Member]
Revenues [Abstract]
Revenues	96,000	111,800	125,200
Operating Costs and Expenses [Abstract]
Costs and Expenses, Total	534,000	540,600	585,800
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	1,700	2,200	700
Entergy Arkansas [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	2,784,047	2,460,181	2,646,396
Entergy Louisiana [Member]
Revenues [Abstract]
Revenues	5,732,099	5,144,018	5,147,770
Operating Costs and Expenses [Abstract]
Utilities Operating Expense, Fuel Used	1,311,773	1,026,343	1,080,485
Utilities Operating Expense, Purchased Power	895,174	670,874	654,721
Nuclear Refueling Outage Expenses	53,638	76,020	63,429
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	1,136,573	1,097,283	1,097,233
Accretion Expense, Including Asset Retirement Obligations	78,992	80,663	75,962
Taxes, Other	261,530	248,472	245,191
Cost, Depreciation and Amortization	806,376	770,904	726,389
Other Regulatory Charges (Credits) - Net	(176,001)	41,525	41,209
Costs and Expenses, Total	4,368,055	4,012,084	3,984,619
Operating Income (Loss), Total	1,364,044	1,131,934	1,163,151
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	54,958	36,782	32,160
Other Nonoperating Income (Expense)	(66,313)	(123,280)	(160,972)
Nonoperating Income (Expense), Total	454,572	375,429	264,737
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	488,974	403,473	375,295
Public Utilities, Allowance for Funds Used During Construction, Additions	21,071	12,290	14,996
Interest Expense, Nonoperating	467,903	391,183	360,299
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	1,350,713	1,116,180	1,067,589
Income Tax Expense (Benefit)	237,813	225,409	(205,781)
Net Income (Loss)	1,109,948	887,645	1,270,382
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,112,900	890,771	1,273,370
Net Income (Loss) Attributable to Noncontrolling Interest	2,952	3,126	2,988
Entergy Louisiana [Member] | Affiliated Entity [Member]
Revenues [Abstract]
Revenues	386,500	312,800	317,600
Operating Costs and Expenses [Abstract]
Costs and Expenses, Total	639,600	649,300	719,800
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	299,135	315,433	303,233
Entergy Louisiana [Member] | Nonrelated Party [Member]
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	166,792	146,494	90,316
Entergy Louisiana [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	5,687,813	5,068,158	5,073,239
Entergy Louisiana [Member] | Natural Gas, US Regulated [Member]
Revenues [Abstract]
Revenues	44,286	75,860	74,531
Entergy Mississippi [Member]
Revenues [Abstract]
Revenues	1,955,705	1,764,593	1,802,533
Operating Costs and Expenses [Abstract]
Utilities Operating Expense, Fuel Used	165,590	270,015	563,296
Utilities Operating Expense, Purchased Power	374,694	273,580	281,761
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	371,096	315,651	320,192
Taxes, Other	181,195	166,195	150,921
Cost, Depreciation and Amortization	273,301	270,483	262,624
Other Regulatory Charges (Credits) - Net	73,111	36,723	(111,376)
Costs and Expenses, Total	1,438,987	1,332,647	1,467,418
Operating Income (Loss), Total	516,718	431,946	335,115
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	9,449	9,095	8,552
Investment Income, Net	18,024	3,249	2,275
Other Nonoperating Income (Expense)	3,953	(11,157)	(13,231)
Nonoperating Income (Expense), Total	31,426	1,187	(2,404)
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	147,881	110,931	99,857
Public Utilities, Allowance for Funds Used During Construction, Additions	3,566	3,520	3,479
Interest Expense, Nonoperating	144,315	107,411	96,378
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	403,829	325,722	236,333
Income Tax Expense (Benefit)	95,101	80,315	54,364
Net Income (Loss)	311,864	255,958	192,271
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	308,728	245,407	181,969
Net Income (Loss) Attributable to Noncontrolling Interest	(3,136)	(10,551)	(10,302)
Entergy Mississippi [Member] | Affiliated Entity [Member]
Revenues [Abstract]
Revenues	1,000	1,000	1,000
Operating Costs and Expenses [Abstract]
Costs and Expenses, Total	434,400	339,600	345,200
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	2,900	400	200
Entergy Mississippi [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	1,955,705	1,764,593	1,802,533
Entergy New Orleans [Member]
Revenues [Abstract]
Revenues	772,214	810,564	843,933
Operating Costs and Expenses [Abstract]
Utilities Operating Expense, Fuel Used	92,621	99,055	122,400
Utilities Operating Expense, Purchased Power	271,170	252,863	268,478
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	157,415	172,101	167,719
Asset Impairment Charges	12,795	0	0
Taxes, Other	57,282	60,476	62,979
Cost, Depreciation and Amortization	81,830	84,937	81,282
Other Regulatory Charges (Credits) - Net	(12,654)	85,136	69,211
Costs and Expenses, Total	660,459	754,568	772,069
Operating Income (Loss), Total	111,755	55,996	71,864
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	1,857	2,118	1,470
Investment Income, Net	2,650	2,144	7,154
Other Nonoperating Income (Expense)	(3,695)	(115)	(4,119)
Nonoperating Income (Expense), Total	812	4,147	4,505
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	47,322	42,337	38,118
Public Utilities, Allowance for Funds Used During Construction, Additions	1,021	883	714
Interest Expense, Nonoperating	46,301	41,454	37,404
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	66,266	18,689	38,965
Income Tax Expense (Benefit)	15,855	2,842	(189,973)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	50,411	15,847	228,938
Entergy New Orleans [Member] | Affiliated Entity [Member]
Revenues [Abstract]
Revenues	400	0	0
Operating Costs and Expenses [Abstract]
Costs and Expenses, Total	294,000	293,900	302,500
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	300	200	1,000
Entergy New Orleans [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	703,893	708,354	737,974
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
Revenues [Abstract]
Revenues	68,321	102,210	105,959
Entergy Texas [Member]
Revenues [Abstract]
Revenues	2,127,584	2,050,150	2,028,586
Operating Costs and Expenses [Abstract]
Utilities Operating Expense, Fuel Used	351,554	482,486	403,111
Utilities Operating Expense, Purchased Power	497,113	373,036	468,511
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	359,812	340,956	323,797
Taxes, Other	120,919	101,993	117,852
Cost, Depreciation and Amortization	325,185	338,890	278,311
Other Regulatory Charges (Credits) - Net	13,732	(13,884)	7,324
Costs and Expenses, Total	1,668,315	1,623,477	1,598,906
Operating Income (Loss), Total	459,269	426,673	429,680
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	81,771	47,833	28,193
Investment Income, Net	5,964	15,107	11,116
Other Nonoperating Income (Expense)	(8,824)	(11,113)	(10,411)
Nonoperating Income (Expense), Total	78,911	51,827	28,898
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	173,565	137,820	114,978
Public Utilities, Allowance for Funds Used During Construction, Additions	34,822	18,626	10,545
Interest Expense, Nonoperating	138,743	119,194	104,433
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	399,437	359,306	354,145
Income Tax Expense (Benefit)	65,366	65,684	62,872
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	334,071	293,622	291,273
Preferred Stock Dividends, Income Statement Impact	2,072	2,072	2,072
Net Income (Loss) Available to Common Stockholders, Basic, Total	331,999	291,550	289,201
Entergy Texas [Member] | Affiliated Entity [Member]
Revenues [Abstract]
Revenues	0	0	700
Operating Costs and Expenses [Abstract]
Costs and Expenses, Total	313,700	319,400	316,800
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	700	2,700	1,800
Entergy Texas [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	2,127,584	2,050,150	2,028,586
System Energy [Member]
Revenues [Abstract]
Revenues	581,481	585,049	586,603
Operating Costs and Expenses [Abstract]
Utilities Operating Expense, Fuel Used	64,507	62,433	71,762
Nuclear Refueling Outage Expenses	16,614	19,158	26,745
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	189,628	192,300	207,765
Accretion Expense, Including Asset Retirement Obligations	45,255	43,478	41,773
Taxes, Other	26,868	27,260	29,224
Cost, Depreciation and Amortization	123,846	121,386	90,858
Other Regulatory Charges (Credits) - Net	2,453	(2,799)	(57,429)
Costs and Expenses, Total	469,171	463,216	410,698
Operating Income (Loss), Total	112,310	121,833	175,905
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	8,342	7,647	7,531
Investment Income, Net	54,971	47,953	13,131
Other Nonoperating Income (Expense)	106	672	(9,101)
Nonoperating Income (Expense), Total	63,419	56,272	11,561
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	72,148	48,121	48,416
Public Utilities, Allowance for Funds Used During Construction, Additions	4,089	3,019	1,754
Interest Expense, Nonoperating	68,059	45,102	46,662
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	107,670	133,003	140,804
Income Tax Expense (Benefit)	19,575	29,503	32,032
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	88,095	103,500	108,772
System Energy [Member] | Affiliated Entity [Member]
Revenues [Abstract]
Revenues	581,400	583,300	588,400
Operating Costs and Expenses [Abstract]
Costs and Expenses, Total	146,800	166,600	179,000
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	$ 500	$ 800	$ 600