Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule Of Defined Benefit Plans Disclosures) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	$ (254,704)	$ (648,413)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Liability, Defined Benefit Plan, Current	(64,854)	(59,508)
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent	(3,976)
Disposal Group, Assets, Defined Benefit Plan, Noncurrent	(14,663)
Disposal Group, Assets, Regulatory Asset, Noncurrent	(35,381)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	837,644	865,854
Defined Benefit Plan, Service Cost	12,503	14,654	$ 24,734
Defined Benefit Plan, Interest Cost	39,408	42,272	27,306
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(66,320)	(4,303)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(90,492)	(95,348)
Defined Benefit Plan, Benefit Obligation, Ending Balance	754,682	837,644	865,854
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	673,141	623,824
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	49,080	76,870
Defined Benefit Plan, Plan Assets, Contributions by Employer	45,400	49,126
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	21,473	18,669
Defined Benefit Plan, Plan Assets, Benefits Paid	(90,492)	(95,348)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	698,602	673,141	623,824
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(56,080)	(164,503)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(13,550)	(118,797)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(56,080)	(164,503)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	(78,520)	(33,617)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	(133,253)	(116,078)
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	(4,434)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	21,473	18,669
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	466	280
Liability, Defined Benefit Plan, Current	(42,530)	(45,706)
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax	(12,729)	(21,465)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	(91,249)	(55,082)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	(20,755)	(34,899)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	(154,008)	(150,977)
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, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Assets, Defined Benefit Plan, Noncurrent	(14,700)
Disposal Group, Assets, Regulatory Asset, Noncurrent	(1,900)
Pension Plan [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	5,460,601
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	4,432,732	5,460,601
Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	88,600
Defined Benefit Plan, Benefit Obligation, Ending Balance	94,100	88,600
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(71,800)	(74,800)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Liability, Defined Benefit Plan, Current	(22,300)	(13,800)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	29,800	29,700
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	4,700	3,900
Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	5,915,404	6,166,106
Defined Benefit Plan, Service Cost	93,468	101,182	138,085
Defined Benefit Plan, Interest Cost	249,757	298,281	235,805
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(156,248)	123,237
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(1,581,690)	(773,402)
Defined Benefit Plan, Benefit Obligation, Ending Balance	4,520,691	5,915,404	6,166,106
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	5,460,601	5,242,098
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	283,816	724,903
Defined Benefit Plan, Plan Assets, Contributions by Employer	270,005	267,002
Defined Benefit Plan, Plan Assets, Benefits Paid	(1,581,690)	(773,402)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	4,432,732	5,460,601	5,242,098
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(87,959)	(454,803)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(158,630)	(454,803)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(87,959)	(454,803)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	1,217,402	1,447,978
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	89,531	347,268
Defined Benefit Plan, Plan Assets, Payment for Settlement	(1,205,195)	(410,110)
Assets for Plan Benefits, Defined Benefit Plan	70,671	0
Pension Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans and Entergy Louisiana natural gas distribution businesses [Member] | Qualified Plan [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent	(4,000)
Disposal Group, Assets, Regulatory Asset, Noncurrent	(13,900)
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	155,987	164,018
Defined Benefit Plan, Service Cost	2,569	2,965	4,457
Defined Benefit Plan, Interest Cost	7,331	8,002	5,050
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(17,007)	(6,403)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(14,917)	(15,759)
Defined Benefit Plan, Benefit Obligation, Ending Balance	138,212	155,987	164,018
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	274,814	255,117
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	20,602	31,743
Defined Benefit Plan, Plan Assets, Contributions by Employer	(604)	582
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	4,200	3,131
Defined Benefit Plan, Plan Assets, Benefits Paid	(14,917)	(15,759)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	284,095	274,814	255,117
Defined Benefit Plan, Funded (Unfunded) Status of Plan	145,883	118,827
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	0	(118,827)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	145,883	118,827
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	(38,054)	(17,980)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment		0
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	4,200	3,131
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	49	33
Liability, Defined Benefit Plan, Current	0	0
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax	2,886	4,983
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	(35,168)	(12,997)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Assets for Plan Benefits, Defined Benefit Plan	145,883
Entergy Arkansas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	2,313
Defined Benefit Plan, Benefit Obligation, Ending Balance	1,721	2,313
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(1,721)	(2,313)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(1,197)	(2,037)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Liability, Defined Benefit Plan, Current	(524)	(276)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	119	857
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy Arkansas [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	1,117,585	1,168,098
Defined Benefit Plan, Service Cost	16,398	18,461	25,210
Defined Benefit Plan, Interest Cost	52,870	56,026	45,378
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(48,020)	39,643
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(77,770)	(164,643)
Defined Benefit Plan, Benefit Obligation, Ending Balance	1,061,063	1,117,585	1,168,098
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	991,894	961,178
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	73,952	140,891
Defined Benefit Plan, Plan Assets, Contributions by Employer	55,112	54,468
Defined Benefit Plan, Plan Assets, Benefits Paid	(77,770)	(164,643)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	1,043,188	991,894	961,178
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(17,875)	(125,691)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(47,396)	(125,691)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(17,875)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	412,777	485,113
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Plan Assets, Payment for Settlement		(68,700)
Assets for Plan Benefits, Defined Benefit Plan	29,521
Entergy Louisiana [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(160,577)	(271,928)
Entergy Louisiana [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent	(4,525)
Disposal Group, Assets, Defined Benefit Plan, Noncurrent	0
Disposal Group, Assets, Regulatory Asset, Noncurrent	(8,947)
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	170,139	183,126
Defined Benefit Plan, Service Cost	2,800	3,379	5,633
Defined Benefit Plan, Interest Cost	7,995	8,931	5,770
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(7,273)	(458)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(22,774)	(24,768)
Defined Benefit Plan, Benefit Obligation, Ending Balance	156,831	170,139	183,126
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	0	0
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	0	0
Defined Benefit Plan, Plan Assets, Contributions by Employer	16,907	20,451
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	5,867	4,317
Defined Benefit Plan, Plan Assets, Benefits Paid	(22,774)	(24,768)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0	0
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(156,831)	(170,139)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(142,454)	(155,090)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(156,831)	(170,139)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	(76,030)	(75,709)
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment		(4,434)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	5,867	4,317
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	77	46
Liability, Defined Benefit Plan, Current	(14,377)	(15,049)
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	(8,101)	(12,645)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	(84,131)	(88,354)
Assets for Plan Benefits, Defined Benefit Plan	0
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent	(2,500)
Entergy Louisiana [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	2,574
Defined Benefit Plan, Benefit Obligation, Ending Balance	1,405	2,574
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(1,405)	(2,574)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(1,215)	(2,266)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Liability, Defined Benefit Plan, Current	(190)	(308)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	493	1,604
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	(21)	(67)
Entergy Louisiana [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	1,173,283	1,256,422
Defined Benefit Plan, Service Cost	22,204	24,716	33,520
Defined Benefit Plan, Interest Cost	55,843	60,346	49,330
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(46,895)	1,925
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(81,411)	(170,126)
Defined Benefit Plan, Benefit Obligation, Ending Balance	1,123,024	1,173,283	1,256,422
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1,058,711	1,035,574
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	85,900	148,698
Defined Benefit Plan, Plan Assets, Contributions by Employer	48,401	44,565
Defined Benefit Plan, Plan Assets, Benefits Paid	(81,411)	(170,126)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	1,111,601	1,058,711	1,035,574
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(11,423)	(114,572)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(21,433)	(114,572)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(11,423)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	256,316	319,116
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	10,680	13,296
Defined Benefit Plan, Plan Assets, Payment for Settlement		(103,100)
Assets for Plan Benefits, Defined Benefit Plan	10,010
Entergy Louisiana [Member] | Pension Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member] | Qualified Plan [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent	(2,000)
Disposal Group, Assets, Regulatory Asset, Noncurrent	(4,500)
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	41,344	44,365
Defined Benefit Plan, Service Cost	736	878	1,354
Defined Benefit Plan, Interest Cost	1,945	2,170	1,401
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(3,008)	(1,650)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(3,584)	(5,815)
Defined Benefit Plan, Benefit Obligation, Ending Balance	38,143	41,344	44,365
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	85,662	79,496
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	6,393	9,949
Defined Benefit Plan, Plan Assets, Contributions by Employer	(23)	646
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	696	1,386
Defined Benefit Plan, Plan Assets, Benefits Paid	(3,584)	(5,815)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	89,144	85,662	79,496
Defined Benefit Plan, Funded (Unfunded) Status of Plan	51,001	44,318
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	0	(44,318)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	51,001	44,318
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	(8,791)	(4,815)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment		0
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	696	1,386
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	14	10
Liability, Defined Benefit Plan, Current	0	0
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax	(1,727)	(2,682)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	(10,518)	(7,497)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Assets for Plan Benefits, Defined Benefit Plan	51,001
Entergy Mississippi [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	3,369
Defined Benefit Plan, Benefit Obligation, Ending Balance	3,566	3,369
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(3,566)	(3,369)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(3,147)	(2,895)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Liability, Defined Benefit Plan, Current	(419)	(474)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	1,292	1,303
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy Mississippi [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	295,942	320,994
Defined Benefit Plan, Service Cost	5,135	5,775	8,043
Defined Benefit Plan, Interest Cost	14,084	15,402	12,979
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(10,071)	(328)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(22,019)	(45,901)
Defined Benefit Plan, Benefit Obligation, Ending Balance	283,071	295,942	320,994
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	280,260	265,736
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	21,237	39,315
Defined Benefit Plan, Plan Assets, Contributions by Employer	14,980	21,110
Defined Benefit Plan, Plan Assets, Benefits Paid	(22,019)	(45,901)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	294,458	280,260	265,736
Defined Benefit Plan, Funded (Unfunded) Status of Plan	11,387	(15,682)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(8,279)	(15,682)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	11,387
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	86,790	102,208
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Plan Assets, Payment for Settlement		(31,400)
Assets for Plan Benefits, Defined Benefit Plan	19,666
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent	(1,197)
Disposal Group, Assets, Defined Benefit Plan, Noncurrent	(19,499)
Disposal Group, Assets, Regulatory Asset, Noncurrent	(23,682)
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	21,685	23,971
Defined Benefit Plan, Service Cost	205	235	397
Defined Benefit Plan, Interest Cost	1,012	1,160	694
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(1,063)	(1,676)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(2,658)	(2,384)
Defined Benefit Plan, Benefit Obligation, Ending Balance	19,701	21,685	23,971
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	100,536	91,140
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	7,069	11,193
Defined Benefit Plan, Plan Assets, Contributions by Employer	134	213
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	519	374
Defined Benefit Plan, Plan Assets, Benefits Paid	(2,658)	(2,384)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	105,600	100,536	91,140
Defined Benefit Plan, Funded (Unfunded) Status of Plan	85,899	78,851
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	0	(78,851)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	85,899	78,851
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	(8,134)	(5,843)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment		0
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	519	374
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	1	5
Liability, Defined Benefit Plan, Current	0	0
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax	(1,066)	(1,982)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	(9,200)	(7,825)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Assets for Plan Benefits, Defined Benefit Plan	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, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Assets, Defined Benefit Plan, Noncurrent	(19,500)
Disposal Group, Assets, Regulatory Asset, Noncurrent	(1,900)
Entergy New Orleans [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	1,034
Defined Benefit Plan, Benefit Obligation, Ending Balance	1,143	1,034
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(1,143)	(1,034)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(1,039)	(928)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Liability, Defined Benefit Plan, Current	(104)	(106)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	9	5
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy New Orleans [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	133,950	140,436
Defined Benefit Plan, Service Cost	1,760	1,955	2,745
Defined Benefit Plan, Interest Cost	6,276	6,747	5,491
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(6,098)	4,590
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(8,755)	(19,778)
Defined Benefit Plan, Benefit Obligation, Ending Balance	127,133	133,950	140,436
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	117,923	119,710
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	11,706	16,571
Defined Benefit Plan, Plan Assets, Contributions by Employer	4,931	1,420
Defined Benefit Plan, Plan Assets, Benefits Paid	(8,755)	(19,778)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	125,805	117,923	119,710
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(1,328)	(16,027)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(4,627)	(16,027)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(1,328)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	34,039	44,911
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Plan Assets, Payment for Settlement		(5,300)
Assets for Plan Benefits, Defined Benefit Plan	3,299
Entergy New Orleans [Member] | Pension Plan [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member] | Qualified Plan [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Disposal Group, Liabilities, Defined Benefit Plan, Noncurrent	(1,200)
Disposal Group, Assets, Regulatory Asset, Noncurrent	(6,700)
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	51,617	53,482
Defined Benefit Plan, Service Cost	670	809	1,322
Defined Benefit Plan, Interest Cost	2,411	2,597	1,596
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(3,763)	337
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(6,021)	(6,299)
Defined Benefit Plan, Benefit Obligation, Ending Balance	45,609	51,617	53,482
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	161,318	148,799
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	11,076	17,903
Defined Benefit Plan, Plan Assets, Contributions by Employer	690	235
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	681	680
Defined Benefit Plan, Plan Assets, Benefits Paid	(6,021)	(6,299)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	167,744	161,318	148,799
Defined Benefit Plan, Funded (Unfunded) Status of Plan	122,135	109,701
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	0	(109,701)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	122,135	109,701
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	9,268	14,542
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment		0
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	681	680
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	14	11
Liability, Defined Benefit Plan, Current	0	0
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax	(7,419)	(11,790)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	1,849	2,752
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Assets for Plan Benefits, Defined Benefit Plan	122,135
Entergy Texas [Member] | Pension Plan [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	3,762
Defined Benefit Plan, Benefit Obligation, Ending Balance	2,734	3,762
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(2,734)	(3,762)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(2,348)	(3,314)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Liability, Defined Benefit Plan, Current	(386)	(448)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	(3,429)	(2,526)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy Texas [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	239,984	265,565
Defined Benefit Plan, Service Cost	3,846	4,328	5,999
Defined Benefit Plan, Interest Cost	11,324	12,726	10,729
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(6,102)	(1,416)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(19,110)	(41,219)
Defined Benefit Plan, Benefit Obligation, Ending Balance	229,942	239,984	265,565
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	222,496	226,417
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	16,395	31,984
Defined Benefit Plan, Plan Assets, Contributions by Employer	8,272	5,314
Defined Benefit Plan, Plan Assets, Benefits Paid	(19,110)	(41,219)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	228,053	222,496	226,417
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(1,889)	(17,488)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(7,953)	(17,488)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(1,889)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	55,902	63,665
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Plan Assets, Payment for Settlement		(29,400)
Assets for Plan Benefits, Defined Benefit Plan	6,064
System Energy [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(8,353)	(19,491)
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	33,778	35,274
Defined Benefit Plan, Service Cost	699	754	1,239
Defined Benefit Plan, Interest Cost	1,593	1,726	1,116
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(2,897)	(1,075)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(3,934)	(3,908)
Defined Benefit Plan, Benefit Obligation, Ending Balance	30,553	33,778	35,274
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	45,402	42,434
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	3,491	5,402
Defined Benefit Plan, Plan Assets, Contributions by Employer	741	480
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	1,297	994
Defined Benefit Plan, Plan Assets, Benefits Paid	(3,934)	(3,908)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	46,997	45,402	42,434
Defined Benefit Plan, Funded (Unfunded) Status of Plan	16,444	11,624
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	0	(11,624)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	16,444	11,624
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	(3,364)	112
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment		0
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	1,297	994
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	17	13
Liability, Defined Benefit Plan, Current	0	0
Defined Benefit Plan, Regulatory Asset (Liability), Prior Service Cost (Credit), before Tax	(203)	(496)
Defined Benefit Plan, Regulatory Asset (Liability), before Tax	(3,567)	(384)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Assets for Plan Benefits, Defined Benefit Plan	16,444
System Energy [Member] | Pension Plan [Member] | Qualified Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	286,558	288,302
Defined Benefit Plan, Service Cost	5,525	5,749	7,746
Defined Benefit Plan, Interest Cost	13,525	13,852	11,286
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(8,908)	14,522
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(21,583)	(35,867)
Defined Benefit Plan, Benefit Obligation, Ending Balance	275,117	286,558	288,302
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	255,443	240,392
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	19,389	35,375
Defined Benefit Plan, Plan Assets, Contributions by Employer	16,650	15,543
Defined Benefit Plan, Plan Assets, Benefits Paid	(21,583)	(35,867)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	269,899	255,443	$ 240,392
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(5,218)	(31,115)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(8,353)	(31,115)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(5,218)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset (Liability), Gain (Loss), before Tax	96,932	111,996
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Plan Assets, Payment for Settlement	(2,100)	$ (16,700)
Assets for Plan Benefits, Defined Benefit Plan	$ 3,135