Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Cash and Cash Equivalents [Abstract]
Cash	$ 164,024	$ 48,424
Cash Equivalents, at Carrying Value	1,011,607	811,279
Cash and Cash Equivalents, at Carrying Value, Total	1,175,631	859,703
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	839,379	681,504
Accounts Receivable, Allowance for Credit Loss, Current	(23,010)	(17,919)
Other Receivables	253,458	204,868
Unbilled Receivables, Current	595,617	521,946
Accounts and Other Receivables, Net, Current	1,665,444	1,390,399
Deferred Fuel Cost	99,774	0
Energy Related Inventory	170,925	166,408
Public Utilities, Inventory	1,627,718	1,631,056
Prepaid Expense and Other Assets, Current	327,284	233,212
Deferred Nuclear Refueling Outage Costs	103,072	99,885
Assets, Current, Total	5,189,450	4,396,237
Assets, Noncurrent [Abstract]
Decommissioning Fund Investments	5,833,432	5,562,575
Property, Plant and Equipment, Net	468,635	423,764
Asset Recovery Damaged Property Costs, Noncurrent	303,479	340,460
Other Long-Term Investments	84,411	82,344
Long-Term Investments, Total	6,689,957	6,409,143
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	72,332,650	70,818,667
Public Utilities, Property, Plant and Equipment, Natural Gas	78,182	77,054
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	5,014,935	3,206,308
Public Utilities, Property, Plant and Equipment, Fuel	727,407	765,661
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	78,153,174	74,867,690
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	28,147,570	27,444,740
Public Utilities, Property, Plant and Equipment, Net, Total	50,005,604	47,422,950
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	5,082,842	5,255,509
Deferred Fuel Cost, Noncurrent	172,201	172,201
Goodwill	367,582	367,625
Deferred Income Tax Assets, Net	24,777	18,986
Other Assets, Noncurrent	378,199	284,584
Deferred Costs and Other Assets	6,498,129	6,561,702
Assets, Total	68,383,140	64,790,032
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	1,815,112	1,378,090
Short-Term Debt	475,605	927,291
Accounts Payable, Current	2,133,797	1,929,162
Contract with Customer, Refund Liability, Current	477,258	462,436
Taxes Payable, Current	468,336	457,093
Interest Payable, Current	282,421	259,554
Deferred Fuel Costs Current Liabilities	73,937	237,146
Liability, Defined Benefit Plan, Current	61,457	64,854
Other Liabilities, Current	269,496	243,749
Liabilities, Current, Total	6,512,873	6,111,037
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	4,733,580	4,467,748
Accumulated Deferred Investment Tax Credit	189,849	194,146
Regulatory Liability For Income Taxes - Net	1,140,587	1,168,078
Regulatory Liability, Noncurrent	3,659,163	3,609,463
Asset Retirement Obligations, Noncurrent	4,825,364	4,713,426
Loss Contingency Accrual	467,619	506,063
Liability, Defined Benefit Plan, Noncurrent	180,062	254,704
Long-Term Debt, Excluding Current Maturities	28,114,726	26,613,505
Deferred Credits and Other Liabilities	909,408	1,112,881
Liabilities, Noncurrent, Total	45,341,917	43,274,601
Commitments and Contingencies
Temporary Equity, Carrying Amount, Attributable to Parent	219,410	219,410
Common Shareholders Equity [Abstract]
Preferred Stock, Value, Issued	0	0
Common Stock, Value, Issued	5,775	5,620
Additional Paid in Capital, Common Stock	8,612,713	7,833,525
Retained Earnings (Accumulated Deficit)	12,326,289	12,014,315
Accumulated Other Comprehensive Income (Loss), Net of Tax	34,438	42,769
Treasury Stock, Value	4,766,215	4,812,321
Equity, Attributable to Parent, Total	16,213,000	15,083,908
Equity, Attributable to Noncontrolling Interest	95,940	101,076
Equity, Including Portion Attributable to Noncontrolling Interest, Total	16,308,940	15,184,984
Liabilities and Equity, Total	68,383,140	64,790,032
Customer Advances, Current Liabilities	455,454	151,662
Customer advances for construction, noncurrent	1,121,559	634,587
Disposal Group, Including Discontinued Operation, Assets, Current	19,602	15,574
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	$ 472,528	$ 462,797
Common Stock, Shares, Issued	577,511,170	561,950,696
Entergy Arkansas [Member]
Cash and Cash Equivalents [Abstract]
Cash	$ 44,574	$ 1,306
Cash Equivalents, at Carrying Value	182,414	3,441
Cash and Cash Equivalents, at Carrying Value, Total	226,988	4,747
Accounts Receivable [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(6,356)	(4,672)
Other Receivables	97,188	70,927
Unbilled Receivables, Current	148,697	125,824
Accounts and Other Receivables, Net, Current	479,020	366,725
Energy Related Inventory	64,805	49,937
Public Utilities, Inventory	426,029	384,238
Prepaid Expense and Other Assets, Current	55,249	41,404
Deferred Nuclear Refueling Outage Costs	27,408	48,879
Assets, Current, Total	1,279,499	895,930
Assets, Noncurrent [Abstract]
Decommissioning Fund Investments	1,686,652	1,604,428
Other Long-Term Investments	795	797
Long-Term Investments, Total	1,687,447	1,605,225
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	16,502,576	16,371,182
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	576,593	320,447
Public Utilities, Property, Plant and Equipment, Fuel	229,701	257,533
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	17,308,870	16,949,162
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	6,452,925	6,275,150
Public Utilities, Property, Plant and Equipment, Net, Total	10,855,945	10,674,012
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	1,704,768	1,700,110
Other Assets, Noncurrent	212,976	198,706
Deferred Costs and Other Assets	1,917,744	1,898,816
Assets, Total	15,740,635	15,073,983
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	600,000	0
Contract with Customer, Refund Liability, Current	132,692	129,267
Taxes Payable, Current	73,474	93,215
Interest Payable, Current	38,446	38,377
Deferred Fuel Costs Current Liabilities	11,924	45,158
Other Liabilities, Current	64,932	55,313
Liabilities, Current, Total	1,281,769	656,507
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	1,550,533	1,489,169
Accumulated Deferred Investment Tax Credit	25,469	26,069
Regulatory Liability For Income Taxes - Net	425,296	417,561
Regulatory Liability, Noncurrent	889,400	831,165
Asset Retirement Obligations, Noncurrent	1,741,194	1,691,583
Loss Contingency Accrual	74,043	76,479
Long-Term Debt, Excluding Current Maturities	4,838,033	5,122,494
Deferred Credits and Other Liabilities	265,633	298,951
Liabilities, Noncurrent, Total	9,809,601	9,953,471
Commitments and Contingencies
Common Shareholders Equity [Abstract]
Members' Equity	4,636,633	4,448,837
Equity, Attributable to Noncontrolling Interest	12,632	15,168
Equity, Including Portion Attributable to Noncontrolling Interest, Total	4,649,265	4,464,005
Liabilities and Equity, Total	15,740,635	15,073,983
Entergy Arkansas [Member] | Affiliated Entity [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	82,913	35,412
Liabilities, Current [Abstract]
Accounts Payable, Current	49,653	85,137
Entergy Arkansas [Member] | Nonrelated Party [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	156,578	139,234
Liabilities, Current [Abstract]
Accounts Payable, Current	310,648	210,040
Entergy Louisiana [Member]
Cash and Cash Equivalents [Abstract]
Cash	1,186	327
Cash Equivalents, at Carrying Value	298,264	326,775
Cash and Cash Equivalents, at Carrying Value, Total	299,450	327,102
Accounts Receivable [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(6,246)	(3,036)
Other Receivables	67,705	39,056
Unbilled Receivables, Current	222,520	213,026
Accounts and Other Receivables, Net, Current	817,578	646,190
Deferred Fuel Cost	84,372	0
Energy Related Inventory	41,622	49,515
Public Utilities, Inventory	718,589	782,459
Prepaid Expense and Other Assets, Current	273,298	84,236
Deferred Nuclear Refueling Outage Costs	63,821	31,121
Assets, Current, Total	2,303,575	1,923,097
Assets, Noncurrent [Abstract]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	4,138,191	4,256,997
Decommissioning Fund Investments	2,540,476	2,429,088
Property, Plant and Equipment, Net	455,274	410,611
Asset Recovery Damaged Property Costs, Noncurrent	228,406	256,718
Other Long-Term Investments	9,969	9,749
Long-Term Investments, Total	7,372,316	7,363,163
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	29,556,060	28,736,547
Public Utilities, Property, Plant and Equipment, Natural Gas	34,460	33,775
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	1,350,603	761,090
Public Utilities, Property, Plant and Equipment, Fuel	339,822	288,084
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	31,280,945	29,819,496
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	11,019,307	10,794,817
Public Utilities, Property, Plant and Equipment, Net, Total	20,261,638	19,024,679
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	1,591,621	1,637,967
Deferred Fuel Cost, Noncurrent	168,122	168,122
Other Assets, Noncurrent	76,624	57,853
Deferred Costs and Other Assets	2,015,113	2,037,611
Assets, Total	31,952,642	30,348,550
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	250,000	300,000
Contract with Customer, Refund Liability, Current	173,957	169,544
Taxes Payable, Current	28,225	29,002
Interest Payable, Current	130,616	120,186
Deferred Fuel Costs Current Liabilities	0	5,421
Other Liabilities, Current	119,510	96,426
Liabilities, Current, Total	1,826,304	1,514,016
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	2,726,823	2,477,954
Accumulated Deferred Investment Tax Credit	86,428	88,679
Regulatory Liability For Income Taxes - Net	339,104	355,432
Regulatory Liability, Noncurrent	1,640,771	1,692,547
Asset Retirement Obligations, Noncurrent	1,884,745	1,842,855
Loss Contingency Accrual	255,705	279,623
Liability, Defined Benefit Plan, Noncurrent	149,085	160,577
Long-Term Debt, Excluding Current Maturities	10,149,823	9,566,453
Deferred Credits and Other Liabilities	516,438	479,178
Liabilities, Noncurrent, Total	18,471,901	17,235,140
Commitments and Contingencies
Common Shareholders Equity [Abstract]
Members' Equity	11,560,886	11,503,030
Equity, Attributable to Noncontrolling Interest	42,996	42,706
Accumulated Other Comprehensive Income (Loss), Net of Tax	50,555	53,658
Equity, Including Portion Attributable to Noncontrolling Interest, Total	11,654,437	11,599,394
Liabilities and Equity, Total	31,952,642	30,348,550
Customer Advances, Current Liabilities	352,052	151,662
Customer advances for construction, noncurrent	722,979	291,842
Disposal Group, Including Discontinued Operation, Assets, Current	4,845	2,474
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	178,746	173,669
Entergy Louisiana [Member] | Affiliated Entity [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	163,851	103,055
Liabilities, Current [Abstract]
Accounts Payable, Current	83,160	108,688
Entergy Louisiana [Member] | Nonrelated Party [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	369,748	294,089
Liabilities, Current [Abstract]
Accounts Payable, Current	688,784	533,087
Entergy Mississippi [Member]
Cash and Cash Equivalents [Abstract]
Cash	30	184
Cash Equivalents, at Carrying Value	401,336	155,509
Cash and Cash Equivalents, at Carrying Value, Total	401,366	155,693
Accounts Receivable [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(2,733)	(2,172)
Other Receivables	28,622	25,148
Unbilled Receivables, Current	88,411	75,740
Accounts and Other Receivables, Net, Current	355,431	220,234
Energy Related Inventory	19,818	14,963
Public Utilities, Inventory	115,092	113,256
Prepaid Expense and Other Assets, Current	41,422	19,764
Assets, Current, Total	933,129	523,910
Assets, Noncurrent [Abstract]
Property, Plant and Equipment, Net	4,474	4,482
Other Long-Term Investments	834	880
Long-Term Investments, Total	5,308	5,362
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	8,053,037	7,860,409
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	869,314	487,273
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	8,922,351	8,347,682
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	2,592,512	2,511,091
Public Utilities, Property, Plant and Equipment, Net, Total	6,329,839	5,836,591
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	473,715	525,847
Other Assets, Noncurrent	108,543	97,260
Deferred Costs and Other Assets	582,258	623,107
Assets, Total	7,850,534	6,988,970
Liabilities, Current [Abstract]
Contract with Customer, Refund Liability, Current	97,049	94,009
Taxes Payable, Current	175,095	179,024
Interest Payable, Current	29,792	20,667
Deferred Fuel Costs Current Liabilities	62,013	126,316
Other Liabilities, Current	22,571	20,720
Liabilities, Current, Total	754,358	782,578
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	857,418	870,116
Accumulated Deferred Investment Tax Credit	13,234	13,446
Regulatory Liability For Income Taxes - Net	175,747	180,851
Regulatory Liability, Noncurrent	63,582	59,544
Asset Retirement Obligations, Noncurrent	25,814	25,110
Loss Contingency Accrual	43,238	47,200
Long-Term Debt, Excluding Current Maturities	3,020,687	2,427,073
Deferred Credits and Other Liabilities	84,889	61,446
Liabilities, Noncurrent, Total	4,493,550	3,797,404
Commitments and Contingencies
Common Shareholders Equity [Abstract]
Members' Equity	2,597,315	2,400,786
Equity, Attributable to Noncontrolling Interest	5,311	8,202
Equity, Including Portion Attributable to Noncontrolling Interest, Total	2,602,626	2,408,988
Liabilities and Equity, Total	7,850,534	6,988,970
Customer Advances, Current Liabilities	103,402	0
Customer advances for construction, noncurrent	208,941	112,618
Entergy Mississippi [Member] | Affiliated Entity [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	123,710	23,909
Liabilities, Current [Abstract]
Accounts Payable, Current	50,498	58,087
Entergy Mississippi [Member] | Nonrelated Party [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	117,421	97,609
Liabilities, Current [Abstract]
Accounts Payable, Current	213,938	283,755
Entergy New Orleans [Member]
Cash and Cash Equivalents [Abstract]
Cash	26	374
Cash Equivalents, at Carrying Value	0	31,403
Cash and Cash Equivalents, at Carrying Value, Total	26	31,777
Other Restricted Assets, Current	0	1,611
Accounts Receivable [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(3,395)	(6,735)
Other Receivables	5,772	9,467
Unbilled Receivables, Current	39,997	33,296
Accounts and Other Receivables, Net, Current	127,042	107,603
Deferred Fuel Cost	5,599	0
Energy Related Inventory	766	320
Public Utilities, Inventory	29,226	25,516
Prepaid Expense and Other Assets, Current	19,169	12,128
Assets, Current, Total	196,585	192,055
Assets, Noncurrent [Abstract]
Asset Recovery Damaged Property Costs, Noncurrent	75,073	83,742
Other Long-Term Investments	832	832
Long-Term Investments, Total	75,905	84,574
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	2,193,823	2,160,165
Public Utilities, Property, Plant and Equipment, Natural Gas	43,723	43,279
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	43,456	18,269
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	2,281,002	2,221,713
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	785,518	768,305
Public Utilities, Property, Plant and Equipment, Net, Total	1,495,484	1,453,408
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	122,938	133,261
Deferred Fuel Cost, Noncurrent	4,080	4,080
Other Assets, Noncurrent	74,779	71,037
Deferred Costs and Other Assets	490,923	493,116
Assets, Total	2,258,897	2,223,153
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	165,000	78,000
Contract with Customer, Refund Liability, Current	33,070	28,834
Taxes Payable, Current	28,342	8,786
Interest Payable, Current	6,042	8,671
Deferred Fuel Costs Current Liabilities	0	980
Other Liabilities, Current	18,165	14,427
Liabilities, Current, Total	355,755	230,067
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	192,918	201,541
Accumulated Deferred Investment Tax Credit	15,566	15,617
Regulatory Liability For Income Taxes - Net	16,506	15,000
Regulatory Liability, Noncurrent	245,127	260,312
Loss Contingency Accrual	79,521	90,293
Long-Term Debt, Excluding Current Maturities	565,556	650,463
Deferred Credits and Other Liabilities	54,342	56,395
Liabilities, Noncurrent, Total	1,175,400	1,295,485
Commitments and Contingencies
Common Shareholders Equity [Abstract]
Members' Equity	727,742	697,601
Equity, Including Portion Attributable to Noncontrolling Interest, Total	727,742	697,601
Liabilities and Equity, Total	2,258,897	2,223,153
Disposal Group, Including Discontinued Operation, Assets, Current	14,757	13,100
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	289,126	284,738
Entergy New Orleans [Member] | Affiliated Entity [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	4,959	5,844
Liabilities, Current [Abstract]
Notes Payable, Current	1,140	1,140
Accounts Payable, Current	63,780	45,479
Liabilities, Noncurrent [Abstract]
Notes Payable, Noncurrent	5,864	5,864
Entergy New Orleans [Member] | Nonrelated Party [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	79,709	65,731
Liabilities, Current [Abstract]
Accounts Payable, Current	40,216	43,750
Entergy Texas [Member]
Cash and Cash Equivalents [Abstract]
Cash	25	291
Cash Equivalents, at Carrying Value	17,718	184,706
Cash and Cash Equivalents, at Carrying Value, Total	17,743	184,997
Other Restricted Assets, Current	1,005	2,703
Accounts Receivable [Abstract]
Accounts Receivable, Allowance for Credit Loss, Current	(4,280)	(1,304)
Other Receivables	29,000	43,773
Unbilled Receivables, Current	95,993	74,060
Accounts and Other Receivables, Net, Current	251,115	227,935
Deferred Fuel Cost	9,804	0
Energy Related Inventory	36,153	45,970
Public Utilities, Inventory	166,111	157,241
Prepaid Expense and Other Assets, Current	31,144	34,803
Assets, Current, Total	513,075	653,649
Assets, Noncurrent [Abstract]
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	84	107
Other Long-Term Investments	16,076	15,878
Long-Term Investments, Total	16,160	15,985
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	8,955,667	8,628,625
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	1,995,414	1,513,170
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	10,951,081	10,141,795
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	2,661,738	2,548,961
Public Utilities, Property, Plant and Equipment, Net, Total	8,289,343	7,592,834
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	489,583	549,708
Other Assets, Noncurrent	177,552	157,904
Deferred Costs and Other Assets	667,135	707,612
Assets, Total	9,485,713	8,970,080
Liabilities, Current [Abstract]
Contract with Customer, Refund Liability, Current	40,490	40,782
Taxes Payable, Current	55,883	76,474
Interest Payable, Current	44,674	38,703
Deferred Fuel Costs Current Liabilities	0	59,271
Other Liabilities, Current	19,820	20,836
Liabilities, Current, Total	807,336	662,805
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	905,093	868,849
Accumulated Deferred Investment Tax Credit	6,841	7,215
Regulatory Liability For Income Taxes - Net	81,364	93,766
Regulatory Liability, Noncurrent	17,790	18,705
Asset Retirement Obligations, Noncurrent	14,695	17,688
Loss Contingency Accrual	11,186	9,985
Long-Term Debt, Excluding Current Maturities	4,038,417	3,552,443
Deferred Credits and Other Liabilities	114,463	397,412
Liabilities, Noncurrent, Total	5,189,849	4,966,063
Commitments and Contingencies
Common Stock, No Par Value	$ 0	$ 0
Common Shareholders Equity [Abstract]
Preferred Stock, Value, Issued	$ 38,750	$ 38,750
Common Stock, Value, Issued	49,452	49,452
Additional Paid in Capital, Common Stock	1,200,125	1,200,125
Retained Earnings (Accumulated Deficit)	2,200,201	2,052,885
Equity, Attributable to Parent, Total	3,449,778	3,302,462
Equity, Including Portion Attributable to Noncontrolling Interest, Total	3,488,528	3,341,212
Liabilities and Equity, Total	$ 9,485,713	$ 8,970,080
Common Stock, Shares, Issued	46,525,000	46,525,000
Entergy Texas [Member] | Affiliated Entity [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	$ 14,479	$ 26,564
Liabilities, Current [Abstract]
Accounts Payable, Current	53,562	65,335
Entergy Texas [Member] | Nonrelated Party [Member]
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	115,923	84,842
Liabilities, Current [Abstract]
Accounts Payable, Current	592,907	361,404
System Energy [Member]
Cash and Cash Equivalents [Abstract]
Cash	46	448
Cash Equivalents, at Carrying Value	31,743	28,460
Cash and Cash Equivalents, at Carrying Value, Total	31,789	28,908
Accounts Receivable [Abstract]
Accounts Receivable, before Allowance for Credit Loss, Current	53,823	48,134
Other Receivables	4,824	5,425
Accounts and Other Receivables, Net, Current	58,647	53,559
Public Utilities, Inventory	168,078	163,814
Prepaid Expense and Other Assets, Current	10,929	5,768
Deferred Nuclear Refueling Outage Costs	11,844	19,884
Assets, Current, Total	281,287	271,933
Assets, Noncurrent [Abstract]
Decommissioning Fund Investments	1,606,304	1,529,059
Long-Term Investments, Total	1,606,304	1,529,059
Public Utilities, Property, Plant and Equipment, Net [Abstract]
Public Utilities, Property, Plant and Equipment, Electric	5,677,856	5,668,253
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	125,685	85,127
Public Utilities, Property, Plant and Equipment, Fuel	157,883	220,044
Public Utilities, Property, Plant and Equipment, Plant in Service, Total	5,961,424	5,973,424
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	3,635,827	3,578,709
Public Utilities, Property, Plant and Equipment, Net, Total	2,325,597	2,394,715
Regulatory Asset [Abstract]
Regulatory Asset, Noncurrent	424,778	426,494
Other Assets, Noncurrent	22,771	20,273
Deferred Costs and Other Assets	447,549	446,767
Assets, Total	4,660,737	4,642,474
Liabilities, Current [Abstract]
Long-Term Debt, Current Maturities	112	200,090
Taxes Payable, Current	5,247	15,852
Interest Payable, Current	13,243	13,342
Other Liabilities, Current	4,475	4,473
Liabilities, Current, Total	56,028	297,251
Liabilities, Noncurrent [Abstract]
Deferred Income Taxes and Other Tax Liabilities, Noncurrent	467,250	451,830
Accumulated Deferred Investment Tax Credit	42,244	42,984
Regulatory Liability For Income Taxes - Net	102,570	105,467
Regulatory Liability, Noncurrent	802,492	747,190
Asset Retirement Obligations, Noncurrent	1,150,113	1,127,712
Liability, Defined Benefit Plan, Noncurrent	4,001	8,353
Long-Term Debt, Excluding Current Maturities	1,094,284	889,646
Deferred Credits and Other Liabilities	2	2
Liabilities, Noncurrent, Total	3,662,956	3,373,184
Commitments and Contingencies
Common Stock, No Par Value	$ 0	$ 0
Common Shareholders Equity [Abstract]
Common Stock, Value, Issued	$ 908,944	$ 958,944
Retained Earnings (Accumulated Deficit)	32,809	13,095
Equity, Including Portion Attributable to Noncontrolling Interest, Total	941,753	972,039
Liabilities and Equity, Total	$ 4,660,737	$ 4,642,474
Common Stock, Shares, Issued	789,350	789,350
System Energy [Member] | Affiliated Entity [Member]
Liabilities, Current [Abstract]
Accounts Payable, Current	$ 8,055	$ 18,477
System Energy [Member] | Nonrelated Party [Member]
Liabilities, Current [Abstract]
Accounts Payable, Current	$ 24,896	$ 45,017