Retirement And Other Postretirement Benefits (Components Of Qualified Net Pension Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	$ 25,366	$ 36,977	$ 51,044	$ 74,637
Interest cost on projected benefit obligation	74,033	52,676	149,734	103,795
Expected return on assets	(95,752)	(103,085)	(193,885)	(206,692)
Amortization of loss	21,307	56,413	43,654	116,992
Net other postretirement benefit cost	32,200	65,634	196,221	111,385
Pension Plans Defined Benefit [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	4,661	6,699	9,410	13,557
Interest cost on projected benefit obligation	13,917	9,761	28,197	19,078
Expected return on assets	(17,878)	(19,031)	(35,954)	(38,278)
Amortization of loss	5,763	12,848	12,732	26,274
Net other postretirement benefit cost	8,247	21,773	38,343	32,127
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	6,199	9,007	12,479	18,144
Interest cost on projected benefit obligation	14,944	10,684	30,323	21,183
Expected return on assets	(18,766)	(21,060)	(37,999)	(42,193)
Amortization of loss	4,992	12,302	9,956	24,899
Net other postretirement benefit cost	9,601	15,394	52,989	26,494
Pension Plans Defined Benefit [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,456	2,075	2,938	4,205
Interest cost on projected benefit obligation	3,824	2,796	7,754	5,474
Expected return on assets	(4,635)	(5,164)	(9,519)	(10,367)
Amortization of loss	1,627	3,620	3,392	7,430
Net other postretirement benefit cost	2,360	5,535	16,308	8,950
Pension Plans Defined Benefit [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	487	752	978	1,504
Interest cost on projected benefit obligation	1,669	1,139	3,384	2,278
Expected return on assets	(2,310)	(2,515)	(4,577)	(5,030)
Amortization of loss	484	1,368	997	2,736
Net other postretirement benefit cost	337	744	2,482	1,488
Pension Plans Defined Benefit [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,090	1,579	2,197	3,211
Interest cost on projected benefit obligation	3,162	2,272	6,404	4,447
Expected return on assets	(4,023)	(4,905)	(8,175)	(9,842)
Amortization of loss	1,059	2,439	2,049	4,994
Net other postretirement benefit cost	1,880	3,851	12,745	5,276
Pension Plans Defined Benefit [Member] | System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,445	2,001	2,912	4,046
Interest cost on projected benefit obligation	3,435	2,394	6,963	4,732
Expected return on assets	(4,501)	(4,586)	(9,039)	(9,209)
Amortization of loss	1,274	3,171	2,735	6,437
Net other postretirement benefit cost	2,143	5,003	8,861	8,029
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	3,664	6,184	7,328	12,368
Interest cost on projected benefit obligation	10,568	6,827	21,136	13,654
Expected return on assets	(9,183)	(10,855)	(18,366)	(21,710)
Amortization of prior service cost (credit)	(5,640)	(6,388)	(11,280)	(12,776)
Amortization of loss	(2,862)	1,083	(5,724)	2,166
Net other postretirement benefit cost	(3,453)	(3,149)	(6,906)	(6,298)
Other Postretirement [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	741	1,114	1,482	2,228
Interest cost on projected benefit obligation	2,001	1,263	4,002	2,526
Expected return on assets	(3,778)	(4,483)	(7,556)	(8,966)
Amortization of prior service cost (credit)	524	471	1,048	942
Amortization of loss	43	218	86	436
Net other postretirement benefit cost	(469)	(1,417)	(938)	(2,834)
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	845	1,408	1,690	2,816
Interest cost on projected benefit obligation	2,233	1,443	4,466	2,886
Expected return on assets	0	0	0	0
Amortization of prior service cost (credit)	(951)	(1,158)	(1,902)	(2,316)
Amortization of loss	(1,764)	(186)	(3,528)	(372)
Net other postretirement benefit cost	363	1,507	726	3,014
Other Postretirement [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	220	339	440	678
Interest cost on projected benefit obligation	543	350	1,086	700
Expected return on assets	(1,179)	(1,394)	(2,358)	(2,788)
Amortization of prior service cost (credit)	(239)	(443)	(478)	(886)
Amortization of loss	21	56	42	112
Net other postretirement benefit cost	(634)	(1,092)	(1,268)	(2,184)
Other Postretirement [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	59	99	118	198
Interest cost on projected benefit obligation	290	174	580	348
Expected return on assets	(1,316)	(1,499)	(2,632)	(2,998)
Amortization of prior service cost (credit)	(229)	(229)	(458)	(458)
Amortization of loss	117	(225)	234	(450)
Net other postretirement benefit cost	(1,079)	(1,680)	(2,158)	(3,360)
Other Postretirement [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	202	331	404	662
Interest cost on projected benefit obligation	649	399	1,298	798
Expected return on assets	(2,194)	(2,568)	(4,388)	(5,136)
Amortization of prior service cost (credit)	(1,093)	(1,093)	(2,186)	(2,186)
Amortization of loss	229	162	458	324
Net other postretirement benefit cost	(2,207)	(2,769)	(4,414)	(5,538)
Other Postretirement [Member] | System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	189	310	378	620
Interest cost on projected benefit obligation	432	279	864	558
Expected return on assets	(634)	(791)	(1,268)	(1,582)
Amortization of prior service cost (credit)	(73)	(80)	(146)	(160)
Amortization of loss	0	30	0	60
Net other postretirement benefit cost	(86)	(252)	(172)	(504)
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	8,800	7,200	18,000	17,400
Non Qualified Pension Plans [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	63	71	513	143
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	25	26	52	53
Non Qualified Pension Plans [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	87	79	639	161
Non Qualified Pension Plans [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	33	27	66	56
Non Qualified Pension Plans [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	$ 63	$ 88	$ 126	$ 303