Retirement And Other Postretirement Benefits (Components Of Qualified Net Pension Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	$ 36,977	$ 42,951	$ 74,637	$ 88,191
Interest cost on projected benefit obligation	52,676	47,382	103,795	93,480
Expected return on assets	(103,085)	(106,039)	(206,692)	(211,753)
Amortization of loss	56,413	92,799	116,992	197,190
Net other postretirement benefit cost	65,634	188,642	111,385	278,657
Pension Plans Defined Benefit [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	6,699	7,255	13,557	14,674
Interest cost on projected benefit obligation	9,761	8,752	19,078	17,092
Expected return on assets	(19,031)	(19,640)	(38,278)	(39,311)
Amortization of loss	12,848	18,250	26,274	37,552
Net other postretirement benefit cost	21,773	39,003	32,127	54,393
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	9,007	9,759	18,144	19,803
Interest cost on projected benefit obligation	10,684	9,864	21,183	19,425
Expected return on assets	(21,060)	(22,516)	(42,193)	(45,055)
Amortization of loss	12,302	17,890	24,899	37,093
Net other postretirement benefit cost	15,394	49,989	26,494	66,258
Pension Plans Defined Benefit [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	2,075	2,304	4,205	4,668
Interest cost on projected benefit obligation	2,796	2,571	5,474	5,034
Expected return on assets	(5,164)	(5,600)	(10,367)	(11,186)
Amortization of loss	3,620	5,309	7,430	10,976
Net other postretirement benefit cost	5,535	12,346	8,950	17,254
Pension Plans Defined Benefit [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	752	774	1,504	1,569
Interest cost on projected benefit obligation	1,139	1,079	2,278	2,108
Expected return on assets	(2,515)	(2,641)	(5,030)	(5,263)
Amortization of loss	1,368	2,069	2,736	4,340
Net other postretirement benefit cost	744	4,866	1,488	6,339
Pension Plans Defined Benefit [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,579	1,757	3,211	3,557
Interest cost on projected benefit obligation	2,272	2,052	4,447	4,002
Expected return on assets	(4,905)	(5,272)	(9,842)	(10,510)
Amortization of loss	2,439	3,415	4,994	7,126
Net other postretirement benefit cost	3,851	8,578	5,276	10,801
Pension Plans Defined Benefit [Member] | System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	2,001	2,253	4,046	4,566
Interest cost on projected benefit obligation	2,394	2,236	4,732	4,378
Expected return on assets	(4,586)	(4,804)	(9,209)	(9,583)
Amortization of loss	3,171	4,933	6,437	10,258
Net other postretirement benefit cost	5,003	9,256	8,029	14,257
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	6,184	6,645	12,368	13,290
Interest cost on projected benefit obligation	6,827	5,320	13,654	10,640
Expected return on assets	(10,855)	(10,805)	(21,710)	(21,610)
Amortization of prior service cost (credit)	(6,388)	(8,267)	(12,776)	(16,534)
Amortization of loss	1,083	713	2,166	1,426
Net other postretirement benefit cost	(3,149)	(6,394)	(6,298)	(12,788)
Other Postretirement [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,114	1,034	2,228	2,068
Interest cost on projected benefit obligation	1,263	932	2,526	1,864
Expected return on assets	(4,483)	(4,505)	(8,966)	(9,010)
Amortization of prior service cost (credit)	471	(280)	942	(560)
Amortization of loss	218	49	436	98
Net other postretirement benefit cost	(1,417)	(2,770)	(2,834)	(5,540)
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	1,408	1,544	2,816	3,088
Interest cost on projected benefit obligation	1,443	1,130	2,886	2,260
Expected return on assets	0	0	0	0
Amortization of prior service cost (credit)	(1,158)	(1,230)	(2,316)	(2,460)
Amortization of loss	(186)	(91)	(372)	(182)
Net other postretirement benefit cost	1,507	1,353	3,014	2,706
Other Postretirement [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	339	362	678	724
Interest cost on projected benefit obligation	350	278	700	556
Expected return on assets	(1,394)	(1,384)	(2,788)	(2,768)
Amortization of prior service cost (credit)	(443)	(444)	(886)	(888)
Amortization of loss	56	19	112	38
Net other postretirement benefit cost	(1,092)	(1,169)	(2,184)	(2,338)
Other Postretirement [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	99	109	198	218
Interest cost on projected benefit obligation	174	130	348	260
Expected return on assets	(1,499)	(1,438)	(2,998)	(2,876)
Amortization of prior service cost (credit)	(229)	(229)	(458)	(458)
Amortization of loss	(225)	(178)	(450)	(356)
Net other postretirement benefit cost	(1,680)	(1,606)	(3,360)	(3,212)
Other Postretirement [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	331	346	662	692
Interest cost on projected benefit obligation	399	317	798	634
Expected return on assets	(2,568)	(2,548)	(5,136)	(5,096)
Amortization of prior service cost (credit)	(1,093)	(936)	(2,186)	(1,872)
Amortization of loss	162	100	324	200
Net other postretirement benefit cost	(2,769)	(2,721)	(5,538)	(5,442)
Other Postretirement [Member] | System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost - benefits earned during the period	310	335	620	670
Interest cost on projected benefit obligation	279	220	558	440
Expected return on assets	(791)	(789)	(1,582)	(1,578)
Amortization of prior service cost (credit)	(80)	(109)	(160)	(218)
Amortization of loss	30	15	60	30
Net other postretirement benefit cost	(252)	(328)	(504)	(656)
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	7,200	4,600	17,400	9,200
Non Qualified Pension Plans [Member] | Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	71	90	143	180
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	26	44	53	88
Non Qualified Pension Plans [Member] | Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	79	96	161	192
Non Qualified Pension Plans [Member] | Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	27	8	56	16
Non Qualified Pension Plans [Member] | Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Net other postretirement benefit cost	$ 88	$ 115	$ 303	$ 230