Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Cash and Cash Equivalents [Abstract]
Cash	$ 45,895	$ 48,424
Cash Equivalents, at Carrying Value	1,883,021	811,279
Cash and Cash Equivalents, at Carrying Value, Total	1,928,916	859,703
Other Restricted Assets, Current		4,000
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	735,734	681,504
Accounts Receivable, Allowance for Credit Loss, Current	(32,324)	(17,919)
Other Receivables	242,402	204,868
Unbilled Receivables, Current	524,420	521,946
Accounts and Other Receivables, Net, Current	1,470,232	1,390,399
Deferred Fuel Cost	54,133	0
Energy Related Inventory	131,974	166,408
Public Utilities, Inventory	1,710,395	1,631,056
Deferred Nuclear Refueling Outage Costs	86,497	99,885
Disposal Group, Including Discontinued Operation, Assets, Current	0	15,574
Prepaid Expense and Other Assets, Current	424,704	233,212
Assets, Current, Total	5,806,851	4,396,237
Assets, Noncurrent [Abstract]
Decommissioning Fund Investments	6,300,880	5,562,575
Property, Plant and Equipment, Net	481,590	423,764
Asset Recovery Damaged Property Costs, Noncurrent	308,784	340,460
Other Long-Term Investments	124,414	82,344
Long-Term Investments, Total	7,215,668	6,409,143
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	74,750,917	70,818,667
Public Utilities, Property, Plant and Equipment, Natural Gas	0	77,054
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	6,020,008	3,206,308
Public Utilities, Property, Plant and Equipment, Fuel	834,690	765,661
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	81,605,615	74,867,690
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	28,751,001	27,444,740
Public Utilities, Property, Plant and Equipment, Net, Total	52,854,614	47,422,950
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	5,005,976	5,255,509
Deferred Fuel Cost, Noncurrent	172,201	172,201
Goodwill	367,582	367,625
Deferred Income Tax Assets, Net	15,540	18,986
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	0	462,797
Other Assets, Noncurrent	452,298	284,584
Deferred Costs and Other Assets	6,013,597	6,561,702
Assets, Total	71,890,730	64,790,032
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	2,375,140	1,378,090
Short-Term Debt	657,774	927,291
Accounts Payable, Current	2,565,546	1,929,162
Contract with Customer, Refund Liability, Current	479,796	462,436
Taxes Payable, Current	525,189	457,093
Interest Payable, Current	285,657	259,554
Deferred Fuel Costs, Current Liability	14,562	237,146
Customer advances for construction, current	632,850	151,662
Liability, Defined Benefit Plan, Current	63,214	64,854
Other Liabilities, Current	223,240	243,749
Liabilities, Current, Total	7,822,968	6,111,037
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	5,592,681	4,467,748
Accumulated Deferred Investment Tax Credit	187,173	194,146
Regulatory Liability For Income Taxes Net	1,079,699	1,168,078
Regulatory Liability, Noncurrent	3,911,839	3,609,463
Customer Advances, Noncurrent Liabilities	35,000	0
Asset Retirement Obligations, Noncurrent	4,947,530	4,713,426
Loss Contingency Accrual	495,779	506,063
Liability, Defined Benefit Plan, Noncurrent	113,930	254,704
Long-Term Debt, Excluding Current Maturities	27,902,021	26,613,505
Customer advances for construction, noncurrent	1,615,455	634,587
Deferred Credits and Other Liabilities	953,078	1,112,881
Liabilities, Noncurrent, Total	46,834,185	43,274,601
Commitments and Contingencies
Temporary Equity, Carrying Amount, Attributable to Parent	219,410	219,410
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	5,832	5,620
Additional Paid in Capital	8,979,387	7,833,525
Retained Earnings (Accumulated Deficit)	12,698,436	12,014,315
Accumulated Other Comprehensive Income (Loss), Net of Tax	(3,006)	42,769
Treasury Stock, Value	4,757,573	4,812,321
Subsidiaries’ Preferred Stock Value and Equity Attributable to Noncontrolling Interests	91,091	101,076
Equity, Including Portion Attributable to Noncontrolling Interest, Total	17,014,167	15,184,984
Equity, Attributable to Parent, Total	16,923,076	15,083,908
Liabilities and Equity, Total	71,890,730	64,790,032
Entergy New Orleans [Member]
Cash and Cash Equivalents [Abstract]
Cash	26	374
Cash Equivalents, at Carrying Value	110,238	31,403
Cash and Cash Equivalents, at Carrying Value, Total	110,264	31,777
Other Restricted Assets, Current	0	1,611
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(3,845)	(6,735)
Other Receivables	3,668	9,467
Unbilled Receivables, Current	28,303	33,296
Accounts and Other Receivables, Net, Current	94,557	107,603
Energy Related Inventory	816	320
Public Utilities, Inventory	30,539	25,516
Disposal Group, Including Discontinued Operation, Assets, Current	0	13,100
Prepaid Expense and Other Assets, Current	12,992	12,128
Assets, Current, Total	249,168	192,055
Assets, Noncurrent [Abstract]
Asset Recovery Damaged Property Costs, Noncurrent	73,822	83,742
Other Long-Term Investments	9,485	832
Long-Term Investments, Total	83,307	84,574
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	2,267,691	2,160,165
Public Utilities, Property, Plant and Equipment, Natural Gas	0	43,279
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	43,055	18,269
Public Utilities, Property, Plant and Equipment, Fuel	0	0
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	2,310,746	2,221,713
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	778,401	768,305
Public Utilities, Property, Plant and Equipment, Net, Total	1,532,345	1,453,408
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	109,690	133,261
Deferred Fuel Cost, Noncurrent	4,080	4,080
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	0	284,738
Other Assets, Noncurrent	80,090	71,037
Deferred Costs and Other Assets	193,860	493,116
Assets, Total	2,058,680	2,223,153
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	85,000	78,000
Contract with Customer, Refund Liability, Current	30,632	28,834
Taxes Payable, Current	16,336	8,786
Interest Payable, Current	6,829	8,671
Deferred Fuel Costs, Current Liability	3,209	980
Other Liabilities, Current	10,659	14,427
Liabilities, Current, Total	233,161	230,067
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	201,345	201,541
Accumulated Deferred Investment Tax Credit	15,425	15,617
Regulatory Liability For Income Taxes Net	15,656	15,000
Regulatory Liability, Noncurrent	312,962	260,312
Loss Contingency Accrual	78,933	90,293
Long-Term Debt, Excluding Current Maturities	565,985	650,463
Deferred Credits and Other Liabilities	22,057	56,395
Liabilities, Noncurrent, Total	1,217,507	1,295,485
Commitments and Contingencies
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Members' Equity	608,012	697,601
Equity, Including Portion Attributable to Noncontrolling Interest, Total	608,012	697,601
Liabilities and Equity, Total	2,058,680	2,223,153
Entergy New Orleans [Member] | Affiliated Entity [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	10,459	5,844
Liabilities, Current [Abstract]
Notes Payable, Current	720	1,140
Accounts Payable, Current	47,709	45,479
Liabilities, Noncurrent [Abstract]
Notes Payable, Noncurrent	5,144	5,864
Entergy New Orleans [Member] | Nonrelated Party [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	55,972	65,731
Liabilities, Current [Abstract]
Accounts Payable, Current	32,067	43,750
Entergy Louisiana [Member]
Cash and Cash Equivalents [Abstract]
Cash	237	327
Cash Equivalents, at Carrying Value	776,724	326,775
Cash and Cash Equivalents, at Carrying Value, Total	776,961	327,102
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(9,069)	(3,036)
Other Receivables	50,471	39,056
Unbilled Receivables, Current	194,429	213,026
Accounts and Other Receivables, Net, Current	693,108	646,190
Deferred Fuel Cost	15,672	0
Energy Related Inventory	35,968	49,515
Public Utilities, Inventory	792,217	782,459
Deferred Nuclear Refueling Outage Costs	40,683	31,121
Disposal Group, Including Discontinued Operation, Assets, Current	0	2,474
Prepaid Expense and Other Assets, Current	187,832	84,236
Assets, Current, Total	2,542,441	1,923,097
Assets, Noncurrent [Abstract]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	4,007,919	4,256,997
Decommissioning Fund Investments	2,753,828	2,429,088
Property, Plant and Equipment, Net	459,706	410,611
Asset Recovery Damaged Property Costs, Noncurrent	234,961	256,718
Other Long-Term Investments	10,132	9,749
Long-Term Investments, Total	7,466,546	7,363,163
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	30,408,352	28,736,547
Public Utilities, Property, Plant and Equipment, Natural Gas	0	33,775
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	2,031,650	761,090
Public Utilities, Property, Plant and Equipment, Fuel	323,052	288,084
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	32,763,054	29,819,496
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	11,275,981	10,794,817
Public Utilities, Property, Plant and Equipment, Net, Total	21,487,073	19,024,679
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	1,540,709	1,637,967
Deferred Fuel Cost, Noncurrent	168,122	168,122
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	0	173,669
Other Assets, Noncurrent	132,679	57,853
Deferred Costs and Other Assets	1,841,510	2,037,611
Assets, Total	33,337,570	30,348,550
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	720,000	300,000
Contract with Customer, Refund Liability, Current	172,594	169,544
Taxes Payable, Current	64,793	29,002
Interest Payable, Current	126,349	120,186
Deferred Fuel Costs, Current Liability	0	5,421
Customer advances for construction, current	543,312	151,662
Other Liabilities, Current	94,876	96,426
Liabilities, Current, Total	2,575,409	1,514,016
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	3,093,218	2,477,954
Accumulated Deferred Investment Tax Credit	84,177	88,679
Regulatory Liability For Income Taxes Net	312,684	355,432
Regulatory Liability, Noncurrent	1,630,763	1,692,547
Asset Retirement Obligations, Noncurrent	1,932,412	1,842,855
Loss Contingency Accrual	260,660	279,623
Liability, Defined Benefit Plan, Noncurrent	159,075	160,577
Long-Term Debt, Excluding Current Maturities	9,646,835	9,566,453
Customer advances for construction, noncurrent	1,152,530	291,842
Deferred Credits and Other Liabilities	558,621	479,178
Liabilities, Noncurrent, Total	18,830,975	17,235,140
Commitments and Contingencies
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Accumulated Other Comprehensive Income (Loss), Net of Tax	33,916	53,658
Members' Equity	11,857,063	11,503,030
Equity, Attributable to Noncontrolling Interest	40,207	42,706
Equity, Including Portion Attributable to Noncontrolling Interest, Total	11,931,186	11,599,394
Liabilities and Equity, Total	33,337,570	30,348,550
Entergy Louisiana [Member] | Affiliated Entity [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	164,911	103,055
Liabilities, Current [Abstract]
Accounts Payable, Current	92,126	108,688
Entergy Louisiana [Member] | Nonrelated Party [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	292,366	294,089
Liabilities, Current [Abstract]
Accounts Payable, Current	761,359	533,087
Entergy Arkansas [Member]
Cash and Cash Equivalents [Abstract]
Cash	7,048	1,306
Cash Equivalents, at Carrying Value	268,522	3,441
Cash and Cash Equivalents, at Carrying Value, Total	275,570	4,747
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(7,303)	(4,672)
Other Receivables	87,029	70,927
Unbilled Receivables, Current	130,950	125,824
Accounts and Other Receivables, Net, Current	418,831	366,725
Deferred Fuel Cost	27,704	0
Energy Related Inventory	39,382	49,937
Public Utilities, Inventory	430,662	384,238
Deferred Nuclear Refueling Outage Costs	36,718	48,879
Prepaid Expense and Other Assets, Current	98,975	41,404
Assets, Current, Total	1,327,842	895,930
Assets, Noncurrent [Abstract]
Decommissioning Fund Investments	1,816,331	1,604,428
Other Long-Term Investments	793	797
Long-Term Investments, Total	1,817,124	1,605,225
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	17,022,476	16,371,182
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	621,218	320,447
Public Utilities, Property, Plant and Equipment, Fuel	302,706	257,533
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	17,946,400	16,949,162
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	6,585,693	6,275,150
Public Utilities, Property, Plant and Equipment, Net, Total	11,360,707	10,674,012
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	1,743,848	1,700,110
Other Assets, Noncurrent	221,381	198,706
Deferred Costs and Other Assets	1,965,229	1,898,816
Assets, Total	16,470,902	15,073,983
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	690,000	0
Contract with Customer, Refund Liability, Current	136,587	129,267
Taxes Payable, Current	114,993	93,215
Interest Payable, Current	39,709	38,377
Deferred Fuel Costs, Current Liability	0	45,158
Other Liabilities, Current	56,083	55,313
Liabilities, Current, Total	1,487,324	656,507
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	1,846,713	1,489,169
Accumulated Deferred Investment Tax Credit	24,868	26,069
Regulatory Liability For Income Taxes Net	422,740	417,561
Regulatory Liability, Noncurrent	1,044,060	831,165
Customer Advances, Noncurrent Liabilities	10,000	0
Asset Retirement Obligations, Noncurrent	1,791,372	1,691,583
Loss Contingency Accrual	85,539	76,479
Long-Term Debt, Excluding Current Maturities	4,733,604	5,122,494
Deferred Credits and Other Liabilities	314,495	298,951
Liabilities, Noncurrent, Total	10,273,391	9,953,471
Commitments and Contingencies
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Members' Equity	4,699,369	4,448,837
Equity, Attributable to Noncontrolling Interest	10,818	15,168
Equity, Including Portion Attributable to Noncontrolling Interest, Total	4,710,187	4,464,005
Liabilities and Equity, Total	16,470,902	15,073,983
Entergy Arkansas [Member] | Affiliated Entity [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	43,859	35,412
Liabilities, Current [Abstract]
Accounts Payable, Current	103,411	85,137
Entergy Arkansas [Member] | Nonrelated Party [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	164,296	139,234
Liabilities, Current [Abstract]
Accounts Payable, Current	346,541	210,040
Entergy Mississippi [Member]
Cash and Cash Equivalents [Abstract]
Cash	27	184
Cash Equivalents, at Carrying Value	341,457	155,509
Cash and Cash Equivalents, at Carrying Value, Total	341,484	155,693
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(3,509)	(2,172)
Other Receivables	20,641	25,148
Unbilled Receivables, Current	90,235	75,740
Accounts and Other Receivables, Net, Current	260,903	220,234
Deferred Fuel Cost	10,757	0
Energy Related Inventory	18,481	14,963
Public Utilities, Inventory	112,082	113,256
Prepaid Expense and Other Assets, Current	36,911	19,764
Assets, Current, Total	780,618	523,910
Assets, Noncurrent [Abstract]
Property, Plant and Equipment, Net	4,467	4,482
Other Long-Term Investments	864	880
Long-Term Investments, Total	5,331	5,362
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	8,366,079	7,860,409
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	1,396,075	487,273
Public Utilities, Property, Plant and Equipment, Fuel	0	0
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	9,762,154	8,347,682
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	2,635,823	2,511,091
Public Utilities, Property, Plant and Equipment, Net, Total	7,126,331	5,836,591
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	455,714	525,847
Other Assets, Noncurrent	108,480	97,260
Deferred Costs and Other Assets	564,194	623,107
Assets, Total	8,476,474	6,988,970
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	0	0
Contract with Customer, Refund Liability, Current	97,875	94,009
Taxes Payable, Current	163,220	179,024
Interest Payable, Current	28,467	20,667
Deferred Fuel Costs, Current Liability	0	126,316
Customer advances for construction, current	89,538	0
Other Liabilities, Current	23,678	20,720
Liabilities, Current, Total	861,669	782,578
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	926,734	870,116
Accumulated Deferred Investment Tax Credit	13,191	13,446
Regulatory Liability For Income Taxes Net	170,902	180,851
Regulatory Liability, Noncurrent	144,124	59,544
Customer Advances, Noncurrent Liabilities	25,000	0
Asset Retirement Obligations, Noncurrent	26,538	25,110
Loss Contingency Accrual	51,564	47,200
Long-Term Debt, Excluding Current Maturities	3,021,324	2,427,073
Customer advances for construction, noncurrent	184,564	112,618
Deferred Credits and Other Liabilities	67,648	61,446
Liabilities, Noncurrent, Total	4,631,589	3,797,404
Commitments and Contingencies
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Members' Equity	2,978,150	2,400,786
Equity, Attributable to Noncontrolling Interest	5,066	8,202
Equity, Including Portion Attributable to Noncontrolling Interest, Total	2,983,216	2,408,988
Liabilities and Equity, Total	8,476,474	6,988,970
Entergy Mississippi [Member] | Affiliated Entity [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	37,723	23,909
Liabilities, Current [Abstract]
Accounts Payable, Current	61,135	58,087
Entergy Mississippi [Member] | Nonrelated Party [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	115,813	97,609
Liabilities, Current [Abstract]
Accounts Payable, Current	397,756	283,755
Entergy Texas [Member]
Cash and Cash Equivalents [Abstract]
Cash	200	291
Cash Equivalents, at Carrying Value	274,908	184,706
Cash and Cash Equivalents, at Carrying Value, Total	275,108	184,997
Other Restricted Assets, Current	1,480	2,703
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(8,598)	(1,304)
Other Receivables	67,400	43,773
Unbilled Receivables, Current	80,503	74,060
Accounts and Other Receivables, Net, Current	275,339	227,935
Energy Related Inventory	30,833	45,970
Public Utilities, Inventory	190,322	157,241
Prepaid Expense and Other Assets, Current	49,161	34,803
Assets, Current, Total	822,243	653,649
Assets, Noncurrent [Abstract]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	56	107
Other Long-Term Investments	15,607	15,878
Long-Term Investments, Total	15,663	15,985
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	9,491,159	8,628,625
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	1,761,028	1,513,170
Public Utilities, Property, Plant and Equipment, Fuel	0	0
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	11,252,187	10,141,795
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	2,764,308	2,548,961
Public Utilities, Property, Plant and Equipment, Net, Total	8,487,879	7,592,834
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	510,806	549,708
Other Assets, Noncurrent	191,555	157,904
Deferred Costs and Other Assets	702,361	707,612
Assets, Total	10,028,146	8,970,080
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	130,000	0
Contract with Customer, Refund Liability, Current	42,109	40,782
Taxes Payable, Current	87,180	76,474
Interest Payable, Current	41,907	38,703
Deferred Fuel Costs, Current Liability	11,353	59,271
Other Liabilities, Current	16,801	20,836
Liabilities, Current, Total	921,141	662,805
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	947,067	868,849
Accumulated Deferred Investment Tax Credit	6,467	7,215
Regulatory Liability For Income Taxes Net	57,755	93,766
Regulatory Liability, Noncurrent	138,969	18,705
Asset Retirement Obligations, Noncurrent	15,097	17,688
Loss Contingency Accrual	13,558	9,985
Long-Term Debt, Excluding Current Maturities	3,900,188	3,552,443
Deferred Credits and Other Liabilities	129,693	397,412
Liabilities, Noncurrent, Total	5,208,794	4,966,063
Commitments and Contingencies
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Preferred Stock, Value, Issued	38,750	38,750
Common Stock, Value, Issued	49,452	49,452
Additional Paid in Capital	1,425,125	1,200,125
Retained Earnings (Accumulated Deficit)	2,384,884	2,052,885
Equity, Including Portion Attributable to Noncontrolling Interest, Total	3,898,211	3,341,212
Equity, Attributable to Parent, Total	3,859,461	3,302,462
Liabilities and Equity, Total	10,028,146	8,970,080
Entergy Texas [Member] | Affiliated Entity [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	28,747	26,564
Liabilities, Current [Abstract]
Accounts Payable, Current	73,178	65,335
Entergy Texas [Member] | Nonrelated Party [Member]
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	107,287	84,842
Liabilities, Current [Abstract]
Accounts Payable, Current	518,613	361,404
System Energy [Member]
Cash and Cash Equivalents [Abstract]
Cash	56	448
Cash Equivalents, at Carrying Value	0	28,460
Cash and Cash Equivalents, at Carrying Value, Total	56	28,908
Accounts Receivable, after Allowance for Credit Loss, Current [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	65,083	48,134
Other Receivables	6,833	5,425
Accounts and Other Receivables, Net, Current	71,916	53,559
Public Utilities, Inventory	149,847	163,814
Deferred Nuclear Refueling Outage Costs	9,096	19,884
Prepaid Expense and Other Assets, Current	5,101	5,768
Assets, Current, Total	236,016	271,933
Assets, Noncurrent [Abstract]
Decommissioning Fund Investments	1,730,722	1,529,059
Long-Term Investments, Total	1,730,722	1,529,059
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	5,753,963	5,668,253
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	123,172	85,127
Public Utilities, Property, Plant and Equipment, Fuel	208,932	220,044
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	6,086,067	5,973,424
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	3,679,886	3,578,709
Public Utilities, Property, Plant and Equipment, Net, Total	2,406,181	2,394,715
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	601,185	426,494
Other Assets, Noncurrent	34,301	20,273
Deferred Costs and Other Assets	635,486	446,767
Assets, Total	5,008,405	4,642,474
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	140	200,090
Taxes Payable, Current	11,685	15,852
Interest Payable, Current	13,215	13,342
Other Liabilities, Current	4,089	4,473
Liabilities, Current, Total	121,268	297,251
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	625,165	451,830
Accumulated Deferred Investment Tax Credit	43,045	42,984
Regulatory Liability For Income Taxes Net	99,960	105,467
Regulatory Liability, Noncurrent	897,301	747,190
Asset Retirement Obligations, Noncurrent	1,172,967	1,127,712
Long-Term Debt, Excluding Current Maturities	1,088,563	889,646
Deferred Credits and Other Liabilities	2	8,355
Liabilities, Noncurrent, Total	3,927,003	3,373,184
Commitments and Contingencies
Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Common Stock, Value, Issued	908,944	958,944
Retained Earnings (Accumulated Deficit)	51,190	13,095
Equity, Including Portion Attributable to Noncontrolling Interest, Total	960,134	972,039
Liabilities and Equity, Total	5,008,405	4,642,474
System Energy [Member] | Affiliated Entity [Member]
Liabilities, Current [Abstract]
Accounts Payable, Current	25,528	18,477
System Energy [Member] | Nonrelated Party [Member]
Liabilities, Current [Abstract]
Accounts Payable, Current	$ 66,611	$ 45,017