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Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Narrative) (Details) $ in Thousands	1 Months Ended	9 Months Ended	12 Months Ended
	May 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent		$ 254,704	$ 113,930	$ 254,704
Liability, Defined Benefit Plan, Current		$ 64,854	$ 63,214	$ 64,854
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate		4.75%	4.75%	4.75%	4.75%
Defined Contribution Plan, Cost			$ 77,400	$ 72,300	$ 65,100
Regulatory Asset, Noncurrent		$ 5,255,509	5,005,976	5,255,509
Regulatory Liability, Noncurrent		3,609,463	3,911,839	3,609,463
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		462,797	0	462,797
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]
Defined Benefit Plan Disclosure [Line Items]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent		3,976		3,976
Disposal Group, Assets, Defined Benefit Plan, Noncurrent		14,663		14,663
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		462,797		462,797
Disposal Group, Assets, Regulatory Asset, Noncurrent		35,381	$ 35,400	35,381
Savings Plan of Entergy Corporation and Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay			6.00%
Savings Plan of Entergy Corporation and Subsidiaries VIII and the Savings Plan of Entergy Corporation and Subsidiaries IX
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay			5.00%
Defined Contribution Plan, Employer Discretionary Contribution, Percent			4.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match			100.00%
Pension & postretirement benefits expense deferral [Member]
Defined Benefit Plan Disclosure [Line Items]
Regulatory Asset, Noncurrent		15,000	$ 900	15,000
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		698,602	726,017	698,602	673,141
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			(20,279)	(24,291)	(13,810)
Defined Benefit Plan, Benefit Obligation		754,682	804,336	754,682	837,644
Liability, Defined Benefit Plan, Noncurrent		13,550	37,903	13,550
Liability, Defined Benefit Plan, Current		42,530	40,416	42,530
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		(154,008)	(91,480)	(154,008)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)			(22,763)	(22,880)	(22,558)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(2,958)	0	0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			40,900
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax		(12,729)	(3,220)	(12,729)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		(78,520)	(63,249)	(78,520)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		(91,249)	$ (66,469)	(91,249)
Other Postretirement Benefits Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]
Defined Benefit Plan Disclosure [Line Items]
Disposal Group, Assets, Defined Benefit Plan, Noncurrent		14,700		14,700
Disposal Group, Assets, Regulatory Asset, Noncurrent		1,900		1,900
Other Postretirement Benefits Plan [Member] | Defined Benefit Plan Total Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage			10.00%
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		4,432,732	$ 4,798,964	4,432,732
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			200,000
Pension Plan [Member] | Group annuity contract purchase
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement				(328,000)
Pension Plan [Member] | Corporate Segment and Other Operating Segment [Member] | Group annuity contract purchase
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement				(320,000)
Pension Plan [Member] | Utility [Member] | Group annuity contract purchase
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement				(8,000)
Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		81,200	79,900	81,200
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			13,500	12,200	43,800
Defined Benefit Plan, Benefit Obligation		94,100	96,300	94,100
Liability, Defined Benefit Plan, Noncurrent		71,800	73,500	71,800
Liability, Defined Benefit Plan, Current		22,300	22,800	22,300
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		4,700	4,800	4,700
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			3,800	1,500	27,900
Common Stock Issued, Employee Stock Trust			25,000
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		29,800	32,300	29,800
Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		4,432,732	4,798,964	4,432,732	5,460,601
Defined Benefit Plan, Accumulated Benefit Obligation		4,100,000	4,200,000	4,100,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			99,251	391,473	253,739
Defined Benefit Plan, Benefit Obligation		4,520,691	4,584,311	4,520,691	5,915,404
Liability, Defined Benefit Plan, Noncurrent		158,630	2,478	158,630
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(23,874)	(328,277)	(160,387)
Defined Benefit Plan, Plan Assets, Payment for Settlement			(1,205,195)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		1,217,402	1,056,610	1,217,402
Assets for Plan Benefits, Defined Benefit Plan		70,671	217,131	70,671
Pension Plan [Member] | Qualified Plan [Member] | Sale of gas distribution business - ongoing payment of lump sum benefits
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(12,100)
Pension Plan [Member] | Qualified Plan [Member] | Sale of the gas business settlement charges
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(11,800)
Pension Plan [Member] | Qualified Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]
Defined Benefit Plan Disclosure [Line Items]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent			4,000
Disposal Group, Assets, Regulatory Asset, Noncurrent			$ 13,900
Pension Plan [Member] | Qualified Plan [Member] | Group annuity contract purchase
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		328,000
Defined Benefit Plan, Benefit Obligation, (Increase) Decrease for Settlement	$ 1,200,000
Group annuity contract population	3,400
Pension Plan [Member] | Qualified Plan [Member] | Corporate Segment and Other Operating Segment [Member] | Group annuity contract purchase
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		320,000
Pension Plan [Member] | Qualified Plan [Member] | Utility [Member] | Group annuity contract purchase
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		8,000
Pension Plan [Member] | Defined Benefit Plan Total Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage			10.00%
Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost			$ 7,550	6,822	5,866
Regulatory Asset, Noncurrent		1,700,110	1,743,848	1,700,110
Regulatory Liability, Noncurrent		831,165	1,044,060	831,165
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		284,095	305,246	284,095	274,814
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			(6,831)	(5,538)	(1,879)
Defined Benefit Plan, Benefit Obligation		138,212	147,875	138,212	155,987
Liability, Defined Benefit Plan, Noncurrent		0	0	0
Liability, Defined Benefit Plan, Current		0	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)			2,097	2,097	2,096
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			710
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax		2,886	789	2,886
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		(38,054)	(39,563)	(38,054)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		(35,168)	(38,774)	(35,168)
Assets for Plan Benefits, Defined Benefit Plan		145,883	157,371	145,883
Entergy Arkansas [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			29,716
Entergy Arkansas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		1,468	1,654	1,468
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			184	269	637
Defined Benefit Plan, Benefit Obligation		1,721	2,105	1,721
Liability, Defined Benefit Plan, Noncurrent		1,197	1,567	1,197
Liability, Defined Benefit Plan, Current		524	538	524
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement					379
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		119	441	119
Entergy Arkansas [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		1,043,188	1,119,253	1,043,188	991,894
Defined Benefit Plan, Accumulated Benefit Obligation		980,559	988,724	980,559
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			20,856	19,631	49,450
Defined Benefit Plan, Benefit Obligation		1,061,063	1,068,987	1,061,063	1,117,585
Liability, Defined Benefit Plan, Noncurrent		47,396		47,396
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(1,454)	0	(26,137)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		412,777	359,324	412,777
Assets for Plan Benefits, Defined Benefit Plan		29,521	50,266	29,521
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent		160,577	159,075	160,577
Defined Contribution Plan, Cost			9,529	8,784	7,757
Regulatory Asset, Noncurrent		1,637,967	1,540,709	1,637,967
Regulatory Liability, Noncurrent		1,692,547	1,630,763	1,692,547
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		173,669	0	173,669
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			(5,612)	(701)	1,449
Defined Benefit Plan, Benefit Obligation		156,831	171,520	156,831	170,139
Liability, Defined Benefit Plan, Noncurrent		142,454	157,380	142,454
Liability, Defined Benefit Plan, Current		14,377	14,140	14,377
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		(84,131)	(48,126)	(84,131)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)			(4,545)	(4,544)	(3,804)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(1,014)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			14,140
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax		0	0	0
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		0	0	0
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		0	0	0
Assets for Plan Benefits, Defined Benefit Plan		0	0	0
Entergy Louisiana [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			41,599
Entergy Louisiana [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		1,197	1,299	1,197
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			140	256	99
Defined Benefit Plan, Benefit Obligation		1,405	1,886	1,405
Liability, Defined Benefit Plan, Noncurrent		1,215	1,695	1,215
Liability, Defined Benefit Plan, Current		190	191	190
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		(21)	(45)	(21)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement				55
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		493	1,079	493
Entergy Louisiana [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		1,111,601	1,185,358	1,111,601	1,058,711
Defined Benefit Plan, Accumulated Benefit Obligation		1,024,433	1,014,433	1,024,433
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			16,905	10,668	69,539
Defined Benefit Plan, Benefit Obligation		1,123,024	1,109,155	1,123,024	1,173,283
Liability, Defined Benefit Plan, Noncurrent		21,433		21,433
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(5,982)	0	(40,437)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		256,316	195,570	256,316
Assets for Plan Benefits, Defined Benefit Plan		10,010	76,203	10,010
Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost			4,524	4,048	3,534
Regulatory Asset, Noncurrent		525,847	455,714	525,847
Regulatory Liability, Noncurrent		59,544	144,124	59,544
Entergy Mississippi [Member] | Other postretirement benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Regulatory Liability, Noncurrent		7,400	18,600	7,400
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		89,144	95,870	89,144	85,662
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			(3,892)	(3,699)	(2,538)
Defined Benefit Plan, Benefit Obligation		38,143	40,800	38,143	41,344
Liability, Defined Benefit Plan, Noncurrent		0	0	0
Liability, Defined Benefit Plan, Current		0	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)			(955)	(955)	(955)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			176
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax		(1,727)	(772)	(1,727)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		(8,791)	(9,706)	(8,791)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		(10,518)	(10,478)	(10,518)
Assets for Plan Benefits, Defined Benefit Plan		51,001	55,070	51,001
Entergy Mississippi [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			3,991
Entergy Mississippi [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		3,322	3,464	3,322
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			558	326	808
Defined Benefit Plan, Benefit Obligation		3,566	3,858	3,566
Liability, Defined Benefit Plan, Noncurrent		3,147	3,514	3,147
Liability, Defined Benefit Plan, Current		419	344	419
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			215		453
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		1,292	1,764	1,292
Entergy Mississippi [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		294,458	313,385	294,458	280,260
Defined Benefit Plan, Accumulated Benefit Obligation		257,759	259,995	257,759
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			3,234	3,330	19,715
Defined Benefit Plan, Benefit Obligation		283,071	285,180	283,071	295,942
Liability, Defined Benefit Plan, Noncurrent		8,279		8,279
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(146)	0	(12,242)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		86,790	74,801	86,790
Assets for Plan Benefits, Defined Benefit Plan		19,666	28,205	19,666
Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost			1,555	1,584	1,383
Regulatory Asset, Noncurrent		133,261	109,690	133,261
Regulatory Liability, Noncurrent		260,312	312,962	260,312
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		284,738	0	284,738
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Defined Benefit Plan Disclosure [Line Items]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent		1,197		1,197
Disposal Group, Assets, Defined Benefit Plan, Noncurrent		19,499		19,499
Disposal Group, Including Discontinued Operation, Assets, Noncurrent		284,738		284,738
Disposal Group, Assets, Regulatory Asset, Noncurrent		23,682	23,700	23,682
Entergy New Orleans [Member] | Other postretirement benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Regulatory Liability, Noncurrent			2,400
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		105,600	90,694	105,600	100,536
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			12,329	(5,540)	(4,318)
Defined Benefit Plan, Benefit Obligation		19,701	15,624	19,701	21,685
Liability, Defined Benefit Plan, Noncurrent		0	0	0
Liability, Defined Benefit Plan, Current		0	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)			(798)	(916)	(916)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(1,345)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			336
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax		(1,066)	0	(1,066)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		(8,134)	(10,606)	(8,134)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		(9,200)	(10,606)	(9,200)
Assets for Plan Benefits, Defined Benefit Plan		85,899	75,070	85,899
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Defined Benefit Plan Disclosure [Line Items]
Disposal Group, Assets, Defined Benefit Plan, Noncurrent		19,500		19,500
Disposal Group, Assets, Regulatory Asset, Noncurrent		1,900		1,900
Entergy New Orleans [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			3,304
Entergy New Orleans [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		939	1,163	939
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			137	122	132
Defined Benefit Plan, Benefit Obligation		1,143	1,335	1,143
Liability, Defined Benefit Plan, Noncurrent		1,039	1,240	1,039
Liability, Defined Benefit Plan, Current		104	95	104
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		9	81	9
Entergy New Orleans [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		125,805	105,704	125,805	117,923
Defined Benefit Plan, Accumulated Benefit Obligation		118,620	96,241	118,620
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			6,371	1,103	3,678
Defined Benefit Plan, Benefit Obligation		127,133	101,722	127,133	133,950
Liability, Defined Benefit Plan, Noncurrent		4,627		4,627
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(6,195)	0	(2,080)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		34,039	27,375	34,039
Assets for Plan Benefits, Defined Benefit Plan		3,299	3,982	3,299
Entergy New Orleans [Member] | Pension Plan [Member] | Qualified Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Defined Benefit Plan Disclosure [Line Items]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent			1,200
Disposal Group, Assets, Regulatory Asset, Noncurrent			6,700
Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost			4,385	3,907	3,380
Regulatory Asset, Noncurrent		549,708	510,806	549,708
Regulatory Liability, Noncurrent		18,705	138,969	18,705
Entergy Texas [Member] | Pension & postretirement benefits expense deferral [Member]
Defined Benefit Plan Disclosure [Line Items]
Regulatory Asset, Noncurrent		15,000	863	15,000
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		167,744	178,977	167,744	161,318
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			(10,604)	(10,855)	(8,827)
Defined Benefit Plan, Benefit Obligation		45,609	42,173	45,609	51,617
Liability, Defined Benefit Plan, Noncurrent		0	0	0
Liability, Defined Benefit Plan, Current		0	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)			(4,371)	(4,371)	(4,371)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			149
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax		(7,419)	(3,048)	(7,419)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		9,268	650	9,268
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		1,849	(2,398)	1,849
Assets for Plan Benefits, Defined Benefit Plan		122,135	136,804	122,135
Entergy Texas [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			5,931
Entergy Texas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		2,710	2,832	2,710
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			157	248	253
Defined Benefit Plan, Benefit Obligation		2,734	2,844	2,734
Liability, Defined Benefit Plan, Noncurrent		2,348	2,454	2,348
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Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		(3,429)	(3,102)	(3,429)
Entergy Texas [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		228,053	237,422	228,053	222,496
Defined Benefit Plan, Accumulated Benefit Obligation		212,935	207,772	212,935
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			2,718	436	15,718
Defined Benefit Plan, Benefit Obligation		229,942	224,441	229,942	239,984
Liability, Defined Benefit Plan, Noncurrent		7,953		7,953
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(617)	0	(11,230)
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Assets for Plan Benefits, Defined Benefit Plan		6,064	12,981	6,064
System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Regulatory Asset, Noncurrent		426,494	601,185	426,494
Regulatory Liability, Noncurrent		747,190	897,301	747,190
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		46,997	50,330	46,997	45,402
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			(855)	(913)	(348)
Defined Benefit Plan, Benefit Obligation		30,553	34,795	30,553	33,778
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Liability, Defined Benefit Plan, Current		0	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)			(293)	(293)	(293)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			0
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year			49
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax		(203)	90	(203)
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		(3,364)	(681)	(3,364)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax		(3,567)	(591)	(3,567)
Assets for Plan Benefits, Defined Benefit Plan		16,444	15,535	16,444
System Energy [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
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System Energy [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		269,899	293,671	269,899	255,443
Defined Benefit Plan, Accumulated Benefit Obligation		252,397	253,108	252,397
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)			5,899	5,818	12,627
Defined Benefit Plan, Benefit Obligation		275,117	277,033	275,117	286,558
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Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			(512)	(615)	$ (6,375)
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Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax		96,932	84,844	96,932
Assets for Plan Benefits, Defined Benefit Plan		$ 3,135	$ 16,638	$ 3,135
Minimum [Member] | Savings Plan of Entergy Corporation and Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match			70.00%
Maximum [Member] | Savings Plan of Entergy Corporation and Subsidiaries
Defined Benefit Plan Disclosure [Line Items]
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