Consolidated Statements Of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Revenues [Abstract]
Revenues	$ 3,187,626	$ 2,846,874
Operation and Maintenance:
Utilities Operating Expense, Fuel Used	611,824	344,522
Utilities Operating Expense, Purchased Power	363,043	345,746
Nuclear Refueling Outage Expenses	24,143	33,041
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	673,565	672,667
Asset Impairment Charges	18,059	0
Accretion Expense, Including Asset Retirement Obligations	58,818	55,929
Taxes, Other	206,524	198,765
Cost, Depreciation and Amortization	540,129	512,943
Other Regulatory Charges (Credits) - Net	119,299	(16,843)
Costs and Expenses, Total	2,615,404	2,146,770
Operating Income (Loss), Total	572,222	700,104
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	47,340	44,018
Investment Income, Net	215,810	33,406
Other Nonoperating Income (Expense)	22,963	14,726
Nonoperating Income (Expense), Total	286,113	92,150
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	399,916	348,384
Public Utilities, Allowance for Funds Used During Construction, Additions	20,176	18,593
Interest Expense, Nonoperating, Total	379,740	329,791
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	478,595	462,463
Income Tax Expense (Benefit)	87,790	100,041
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	390,805	362,422
Preferred dividend requirements of subsidiaries and net income (loss) attributable to noncontrolling interests	5,889	1,662
Net Income (Loss) Available to Common Stockholders, Basic, Total	$ 384,916	$ 360,760
Earnings Per Share [Abstract]
Earnings Per Share, Basic	$ 0.84	$ 0.84
Earnings Per Share, Diluted	$ 0.83	$ 0.82
Weighted Average Number of Shares Outstanding, Basic	455,717,833	430,347,768
Weighted Average Number of Shares Outstanding, Diluted	462,510,666	440,648,342
Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	$ 3,170,273	$ 2,757,866
Natural Gas, US Regulated [Member]
Revenues [Abstract]
Revenues	0	71,731
Product and Service, Other [Member]
Revenues [Abstract]
Revenues	17,353	17,277
Entergy Mississippi [Member]
Revenues [Abstract]
Revenues	525,384	423,709
Operation and Maintenance:
Utilities Operating Expense, Fuel Used	91,434	26,051
Utilities Operating Expense, Purchased Power	93,228	87,511
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	83,486	78,800
Taxes, Other	40,483	43,510
Cost, Depreciation and Amortization	69,159	67,984
Other Regulatory Charges (Credits) - Net	10,623	35,587
Costs and Expenses, Total	388,413	339,443
Operating Income (Loss), Total	136,971	84,266
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	856	5,270
Investment Income, Net	6,116	2,317
Other Nonoperating Income (Expense)	9,228	4,094
Nonoperating Income (Expense), Total	16,200	11,681
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	41,722	36,180
Public Utilities, Allowance for Funds Used During Construction, Additions	351	2,016
Interest Expense, Nonoperating, Total	41,371	34,164
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	111,800	61,783
Income Tax Expense (Benefit)	27,482	14,917
Net Income (Loss)	84,306	49,345
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	84,318	46,866
Net Income (Loss) Attributable to Noncontrolling Interest	12	(2,479)
Entergy Mississippi [Member] | Noncontrolling Interest [Member]
Interest Expense, Operating and Nonoperating [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	12	(2,479)
Entergy Mississippi [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	525,384	423,709
Entergy Arkansas [Member]
Revenues [Abstract]
Revenues	646,297	613,511
Operation and Maintenance:
Utilities Operating Expense, Fuel Used	62,896	47,559
Utilities Operating Expense, Purchased Power	74,489	64,947
Nuclear Refueling Outage Expenses	10,689	10,581
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	172,620	171,518
Accretion Expense, Including Asset Retirement Obligations	26,104	24,622
Taxes, Other	41,504	35,981
Cost, Depreciation and Amortization	120,690	113,268
Other Regulatory Charges (Credits) - Net	79,277	(5,117)
Costs and Expenses, Total	588,269	463,359
Operating Income (Loss), Total	58,028	150,152
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	5,122	4,262
Investment Income, Net	107,826	13,579
Other Nonoperating Income (Expense)	1,366	(2,778)
Nonoperating Income (Expense), Total	114,314	15,063
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	74,559	57,743
Public Utilities, Allowance for Funds Used During Construction, Additions	2,530	2,053
Interest Expense, Nonoperating, Total	72,029	55,690
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	100,313	109,525
Income Tax Expense (Benefit)	17,612	23,002
Net Income (Loss)	82,111	87,714
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	82,701	86,523
Net Income (Loss) Attributable to Noncontrolling Interest	590	(1,191)
Entergy Arkansas [Member] | Noncontrolling Interest [Member]
Interest Expense, Operating and Nonoperating [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	590	(1,191)
Entergy Arkansas [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	646,297	613,511
Entergy Louisiana [Member]
Revenues [Abstract]
Revenues	1,424,085	1,301,547
Operation and Maintenance:
Utilities Operating Expense, Fuel Used	344,123	213,852
Utilities Operating Expense, Purchased Power	216,433	261,788
Nuclear Refueling Outage Expenses	9,941	18,371
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	259,653	258,037
Accretion Expense, Including Asset Retirement Obligations	20,365	19,417
Taxes, Other	73,533	66,221
Cost, Depreciation and Amortization	211,551	197,622
Other Regulatory Charges (Credits) - Net	(36,470)	(47,233)
Costs and Expenses, Total	1,099,129	988,075
Operating Income (Loss), Total	324,956	313,472
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	20,076	15,206
Other Nonoperating Income (Expense)	23,015	17,071
Nonoperating Income (Expense), Total	131,611	109,936
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	137,656	121,334
Public Utilities, Allowance for Funds Used During Construction, Additions	7,545	6,185
Interest Expense, Nonoperating, Total	130,111	115,149
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	326,456	308,259
Income Tax Expense (Benefit)	50,556	54,062
Net Income (Loss)	275,193	253,445
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	275,900	254,197
Net Income (Loss) Attributable to Noncontrolling Interest	707	752
Entergy Louisiana [Member] | Noncontrolling Interest [Member]
Interest Expense, Operating and Nonoperating [Abstract]
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	707	752
Entergy Louisiana [Member] | Affiliated Entity [Member]
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	71,260	76,571
Entergy Louisiana [Member] | Nonrelated Party [Member]
Nonoperating Income (Expense) [Abstract]
Investment Income, Net	17,260	1,088
Entergy Louisiana [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	1,424,085	1,271,946
Entergy Louisiana [Member] | Natural Gas, US Regulated [Member]
Revenues [Abstract]
Revenues	0	29,601
Entergy New Orleans [Member]
Revenues [Abstract]
Revenues	171,651	181,055
Operation and Maintenance:
Utilities Operating Expense, Fuel Used	16,232	12,363
Utilities Operating Expense, Purchased Power	78,302	67,741
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	33,780	38,658
Taxes, Other	12,317	14,893
Cost, Depreciation and Amortization	18,996	21,845
Other Regulatory Charges (Credits) - Net	(2,754)	(3,430)
Costs and Expenses, Total	156,873	152,070
Operating Income (Loss), Total	14,778	28,985
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	574	306
Investment Income, Net	879	434
Other Nonoperating Income (Expense)	(665)	(579)
Nonoperating Income (Expense), Total	788	161
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	9,617	13,475
Public Utilities, Allowance for Funds Used During Construction, Additions	336	167
Interest Expense, Nonoperating, Total	9,281	13,308
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	6,285	15,838
Income Tax Expense (Benefit)	(99)	3,739
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	6,384	12,099
Entergy New Orleans [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	171,651	138,925
Entergy New Orleans [Member] | Natural Gas, US Regulated [Member]
Revenues [Abstract]
Revenues	0	42,130
Entergy Texas [Member]
Revenues [Abstract]
Revenues	503,532	441,939
Operation and Maintenance:
Utilities Operating Expense, Fuel Used	81,560	24,392
Utilities Operating Expense, Purchased Power	128,967	132,618
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	77,235	74,455
Taxes, Other	30,356	30,627
Cost, Depreciation and Amortization	80,184	80,680
Other Regulatory Charges (Credits) - Net	2,500	3,257
Costs and Expenses, Total	400,802	346,029
Operating Income (Loss), Total	102,730	95,910
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	18,445	17,372
Investment Income, Net	3,204	2,759
Other Nonoperating Income (Expense)	(1,598)	(1,154)
Nonoperating Income (Expense), Total	20,051	18,977
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	43,079	43,072
Public Utilities, Allowance for Funds Used During Construction, Additions	8,058	7,385
Interest Expense, Nonoperating, Total	35,021	35,687
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	87,760	79,200
Income Tax Expense (Benefit)	14,325	12,344
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	73,435	66,856
Preferred Stock Dividends, Income Statement Impact	518	518
Net Income (Loss) Available to Common Stockholders, Basic, Total	72,917	66,338
Entergy Texas [Member] | Electricity, US Regulated [Member]
Revenues [Abstract]
Revenues	503,532	441,939
System Energy [Member]
Revenues [Abstract]
Revenues	133,764	141,811
Operation and Maintenance:
Utilities Operating Expense, Fuel Used	9,139	14,816
Nuclear Refueling Outage Expenses	3,513	4,090
Utilities Operating Expense, Maintenance, Operations, and Other Costs and Expenses	42,995	43,479
Accretion Expense, Including Asset Retirement Obligations	11,600	11,144
Taxes, Other	6,838	6,804
Cost, Depreciation and Amortization	30,781	30,764
Other Regulatory Charges (Credits) - Net	66,124	93
Costs and Expenses, Total	170,990	111,190
Operating Income (Loss), Total	(37,226)	30,621
Nonoperating Income (Expense) [Abstract]
Public Utilities, Allowance for Funds Used During Construction, Capitalized Cost of Equity	2,268	1,603
Investment Income, Net	78,774	12,439
Other Nonoperating Income (Expense)	419	237
Nonoperating Income (Expense), Total	81,461	14,279
Interest Expense, Operating and Nonoperating [Abstract]
Interest Expense, Debt	18,238	16,022
Public Utilities, Allowance for Funds Used During Construction, Additions	1,355	787
Interest Expense, Nonoperating, Total	16,883	15,235
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	27,352	29,665
Income Tax Expense (Benefit)	4,336	6,276
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	$ 23,016	$ 23,389