Retirement, Other Postretirement Benefits, And Defined Contribution Plans Schedule Of Benefit Obligations, Plan Assets, Funded Status, Amounts Recognized In The Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	$ (59,508)	$ (104,845)
Liability, Defined Benefit Plan, Noncurrent	(648,413)	(1,213,555)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Plan Assets, Payment for Settlement	(410,110)	(604,753)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	865,854	1,189,682
Defined Benefit Plan, Service Cost	14,654	24,734	$ 26,578
Defined Benefit Plan, Interest Cost	42,272	27,306	21,278
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(4,434)	(858)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(4,303)	(297,128)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	18,669	22,486
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(95,348)	(100,632)
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	280	264
Defined Benefit Plan, Benefit Obligation, Ending Balance	837,644	865,854	1,189,682
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	623,824	771,319
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	76,870	(122,184)
Defined Benefit Plan, Plan Assets, Contributions by Employer	49,126	52,835
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	18,669	22,486
Defined Benefit Plan, Plan Assets, Benefits Paid	(95,348)	(100,632)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	673,141	623,824	771,319
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(164,503)	(242,030)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	(45,706)	(42,484)
Liability, Defined Benefit Plan, Noncurrent	(118,797)	(199,546)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(21,465)	(29,323)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	33,617	(16,956)
Defined Benefit Plan Regulatory Liability Before Tax	(55,082)	(12,367)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	(34,899)	(45,167)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	(116,078)	(133,656)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	(150,977)	(178,823)
Qualified Pension Obligations [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	6,166,106	8,409,620
Defined Benefit Plan, Service Cost	101,182	138,085
Defined Benefit Plan, Interest Cost	298,281	235,805
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	123,237	(1,660,463)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(773,402)	(956,941)
Defined Benefit Plan, Benefit Obligation, Ending Balance	5,915,404	6,166,106	8,409,620
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	5,242,098	6,993,110
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	724,903	(1,264,071)
Defined Benefit Plan, Plan Assets, Contributions by Employer	267,002	470,000
Defined Benefit Plan, Plan Assets, Benefits Paid	(773,402)	(956,941)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	5,460,601	5,242,098	6,993,110
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(454,803)	(924,008)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(454,803)	(924,008)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(1,447,978)	(1,842,348)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	347,268	408,839
Entergy Arkansas [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(8,901)	(118,020)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Plan Assets, Payment for Settlement	(68,700)	(96,000)
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	164,018	221,183
Defined Benefit Plan, Service Cost	2,965	4,457	4,135
Defined Benefit Plan, Interest Cost	8,002	5,050	3,726
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	273
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(6,403)	(54,923)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	3,131	5,521
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(15,759)	(17,585)
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	33	42
Defined Benefit Plan, Benefit Obligation, Ending Balance	155,987	164,018	221,183
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	255,117	315,495
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	31,743	(49,887)
Defined Benefit Plan, Plan Assets, Contributions by Employer	582	1,573
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	3,131	5,521
Defined Benefit Plan, Plan Assets, Benefits Paid	(15,759)	(17,585)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	274,814	255,117	315,495
Defined Benefit Plan, Funded (Unfunded) Status of Plan	118,827	91,099
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	0	0
Assets for Plan Benefits, Defined Benefit Plan	118,827	91,099
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	4,983	7,079
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	17,980	(5,224)
Defined Benefit Plan Regulatory Liability Before Tax	(12,997)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy Arkansas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	1,168,098	1,579,346
Defined Benefit Plan, Service Cost	18,461	25,210
Defined Benefit Plan, Interest Cost	56,026	45,378
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	39,643	(280,691)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(164,643)	(201,145)
Defined Benefit Plan, Benefit Obligation, Ending Balance	1,117,585	1,168,098	1,579,346
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	961,178	1,302,588
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	140,891	(233,236)
Defined Benefit Plan, Plan Assets, Contributions by Employer	54,468	92,971
Defined Benefit Plan, Plan Assets, Benefits Paid	(164,643)	(201,145)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	991,894	961,178	1,302,588
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(125,691)	(206,920)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(125,691)	(206,920)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(485,113)	(561,323)
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
Entergy Louisiana [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(271,928)	(389,631)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Plan Assets, Payment for Settlement	(103,100)	(146,600)
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	183,126	253,031
Defined Benefit Plan, Service Cost	3,379	5,633	6,174
Defined Benefit Plan, Interest Cost	8,931	5,770	4,520
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(4,434)	323
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(458)	(65,501)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	4,317	5,081
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(24,768)	(21,268)
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	46	57
Defined Benefit Plan, Benefit Obligation, Ending Balance	170,139	183,126	253,031
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	20,451	16,187
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	4,317	5,081
Defined Benefit Plan, Plan Assets, Benefits Paid	(24,768)	(21,268)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	0	0	0
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(170,139)	(183,126)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	(15,049)	(15,356)
Liability, Defined Benefit Plan, Noncurrent	(155,090)	(167,770)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	0	0
Defined Benefit Plan, Regulatory Asset, 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, Prior Service Cost (Credit), before Tax	(12,645)	(12,015)
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	(75,709)	(82,308)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	(88,354)	(94,323)
Entergy Louisiana [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	1,256,422	1,736,396
Defined Benefit Plan, Service Cost	24,716	33,520
Defined Benefit Plan, Interest Cost	60,346	49,330
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	1,925	(357,572)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(170,126)	(205,252)
Defined Benefit Plan, Benefit Obligation, Ending Balance	1,173,283	1,256,422	1,736,396
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	1,035,574	1,446,658
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	148,698	(259,490)
Defined Benefit Plan, Plan Assets, Contributions by Employer	44,565	53,658
Defined Benefit Plan, Plan Assets, Benefits Paid	(170,126)	(205,252)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	1,058,711	1,035,574	1,446,658
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(114,572)	(220,848)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(114,572)	(220,848)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(319,116)	(445,116)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	13,296	18,546
Entergy Mississippi [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	0	(23,742)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Plan Assets, Payment for Settlement	(31,400)	(48,000)
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	44,365	61,001
Defined Benefit Plan, Service Cost	878	1,354	1,448
Defined Benefit Plan, Interest Cost	2,170	1,401	1,110
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	(1,300)
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(1,650)	(14,465)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	1,386	1,443
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(5,815)	(5,075)
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	10	6
Defined Benefit Plan, Benefit Obligation, Ending Balance	41,344	44,365	61,001
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	79,496	97,888
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	9,949	(15,519)
Defined Benefit Plan, Plan Assets, Contributions by Employer	646	759
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	1,386	1,443
Defined Benefit Plan, Plan Assets, Benefits Paid	(5,815)	(5,075)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	85,662	79,496	97,888
Defined Benefit Plan, Funded (Unfunded) Status of Plan	44,318	35,131
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	0	0
Assets for Plan Benefits, Defined Benefit Plan	44,318	35,131
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(2,682)	(3,637)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	4,815	(2,153)
Defined Benefit Plan Regulatory Liability Before Tax	(7,497)	(1,484)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy Mississippi [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	320,994	448,858
Defined Benefit Plan, Service Cost	5,775	8,043
Defined Benefit Plan, Interest Cost	15,402	12,979
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(328)	(88,303)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(45,901)	(60,583)
Defined Benefit Plan, Benefit Obligation, Ending Balance	295,942	320,994	448,858
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	265,736	356,424
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	39,315	(63,392)
Defined Benefit Plan, Plan Assets, Contributions by Employer	21,110	33,287
Defined Benefit Plan, Plan Assets, Benefits Paid	(45,901)	(60,583)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	280,260	265,736	356,424
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(15,682)	(55,258)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(15,682)	(55,258)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(102,208)	(140,389)
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
Entergy New Orleans [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Plan Assets, Payment for Settlement	(5,300)	(16,200)
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	23,971	31,866
Defined Benefit Plan, Service Cost	235	397	437
Defined Benefit Plan, Interest Cost	1,160	694	521
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	0
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(1,676)	(6,867)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	374	440
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(2,384)	(2,566)
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	5	7
Defined Benefit Plan, Benefit Obligation, Ending Balance	21,685	23,971	31,866
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	91,140	111,137
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	11,193	(18,204)
Defined Benefit Plan, Plan Assets, Contributions by Employer	213	333
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	374	440
Defined Benefit Plan, Plan Assets, Benefits Paid	(2,384)	(2,566)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	100,536	91,140	111,137
Defined Benefit Plan, Funded (Unfunded) Status of Plan	78,851	67,169
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	0	0
Assets for Plan Benefits, Defined Benefit Plan	78,851	67,169
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(1,982)	(2,898)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	5,843	(2,229)
Defined Benefit Plan Regulatory Liability Before Tax	(7,825)	(669)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy New Orleans [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	140,436	195,380
Defined Benefit Plan, Service Cost	1,955	2,745
Defined Benefit Plan, Interest Cost	6,747	5,491
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	4,590	(40,462)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(19,778)	(22,718)
Defined Benefit Plan, Benefit Obligation, Ending Balance	133,950	140,436	195,380
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	119,710	172,366
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	16,571	(31,067)
Defined Benefit Plan, Plan Assets, Contributions by Employer	1,420	1,129
Defined Benefit Plan, Plan Assets, Benefits Paid	(19,778)	(22,718)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	117,923	119,710	172,366
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(16,027)	(20,726)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(16,027)	(20,726)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(44,911)	(51,868)
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
Entergy Texas [Member]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Plan Assets, Payment for Settlement	(29,400)	(48,900)
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	53,482	71,961
Defined Benefit Plan, Service Cost	809	1,322	1,384
Defined Benefit Plan, Interest Cost	2,597	1,596	1,269
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	0
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	337	(16,291)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	680	924
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(6,299)	(6,046)
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	11	16
Defined Benefit Plan, Benefit Obligation, Ending Balance	51,617	53,482	71,961
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	148,799	182,285
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	17,903	(28,341)
Defined Benefit Plan, Plan Assets, Contributions by Employer	235
Defined Benefit Plan Refund to Employer		(23)
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	680	924
Defined Benefit Plan, Plan Assets, Benefits Paid	(6,299)	(6,046)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	161,318	148,799	182,285
Defined Benefit Plan, Funded (Unfunded) Status of Plan	109,701	95,317
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	0	0
Assets for Plan Benefits, Defined Benefit Plan	109,701	95,317
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(11,790)	(16,161)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(14,542)	(24,246)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
Entergy Texas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	265,565	371,802
Defined Benefit Plan, Service Cost	4,328	5,999
Defined Benefit Plan, Interest Cost	12,726	10,729
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(1,416)	(65,795)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(41,219)	(57,170)
Defined Benefit Plan, Benefit Obligation, Ending Balance	239,984	265,565	371,802
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	226,417	341,915
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	31,984	(60,841)
Defined Benefit Plan, Plan Assets, Contributions by Employer	5,314	2,513
Defined Benefit Plan, Plan Assets, Benefits Paid	(41,219)	(57,170)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	222,496	226,417	341,915
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(17,488)	(39,148)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(17,488)	(39,148)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(63,665)	(95,729)
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
System Energy [Member]
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(19,491)	(40,750)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Plan Assets, Payment for Settlement	(16,700)	(23,500)
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	35,274	47,875
Defined Benefit Plan, Service Cost	754	1,239	1,340
Defined Benefit Plan, Interest Cost	1,726	1,116	878
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	141
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	(1,075)	(10,679)
Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant	994	1,222
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(3,908)	(5,657)
Defined Benefit Plan, Benefit Obligation, Prescription Drug Subsidy Receipt	13	17
Defined Benefit Plan, Benefit Obligation, Ending Balance	33,778	35,274	47,875
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	42,434	54,650
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	5,402	(8,725)
Defined Benefit Plan, Plan Assets, Contributions by Employer	480	944
Defined Benefit Plan, Plan Assets, Contributions by Plan Participant	994	1,222
Defined Benefit Plan, Plan Assets, Benefits Paid	(3,908)	(5,657)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	45,402	42,434	54,650
Defined Benefit Plan, Funded (Unfunded) Status of Plan	11,624	7,160
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Current	0	0
Assets for Plan Benefits, Defined Benefit Plan	11,624	7,160
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan Regulatory Asset Net Prior Service Cost (Credit) Before Tax	(496)	(789)
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(112)	(4,054)
Defined Benefit Plan Regulatory Liability Before Tax	(384)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract]
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax	0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax	0	0
System Energy [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation, Beginning Balance	288,302	394,794
Defined Benefit Plan, Service Cost	5,749	7,746
Defined Benefit Plan, Interest Cost	13,852	11,286
Defined Benefit Plan, Benefit Obligation, Actuarial Gain (Loss)	14,522	(81,504)
Defined Benefit Plan, Benefit Obligation, Benefits Paid	(35,867)	(44,020)
Defined Benefit Plan, Benefit Obligation, Ending Balance	286,558	288,302	394,794
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Amount, Beginning Balance	240,392	312,060
Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss)	35,375	(56,267)
Defined Benefit Plan, Plan Assets, Contributions by Employer	15,543	28,619
Defined Benefit Plan, Plan Assets, Benefits Paid	(35,867)	(44,020)
Defined Benefit Plan, Plan Assets, Amount, Ending Balance	255,443	240,392	$ 312,060
Defined Benefit Plan, Funded (Unfunded) Status of Plan	(31,115)	(47,910)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Liability, Defined Benefit Plan, Noncurrent	(31,115)	(47,910)
Amounts recognized as a regulatory asset (before tax) [Abstract]
Defined Benefit Plan, Regulatory Asset, Gain (Loss) before Tax	(111,996)	(125,876)
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