Retirement And Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2022	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	$ 200,000			$ 200,000
Defined Benefit Plan, Plan Assets, Contributions by Employer				101,000
Entergy Arkansas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	40,840			40,840
Defined Benefit Plan, Plan Assets, Contributions by Employer				21,532
Entergy Louisiana [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	22,917			22,917
Defined Benefit Plan, Plan Assets, Contributions by Employer				13,410
Entergy Mississippi [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	12,852			12,852
Defined Benefit Plan, Plan Assets, Contributions by Employer				5,442
Entergy New Orleans [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	922			922
Defined Benefit Plan, Plan Assets, Contributions by Employer				922
Entergy Texas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	1,924			1,924
Defined Benefit Plan, Plan Assets, Contributions by Employer				1,486
Difference between rate case pension amounts and actuarially determined pension amounts	15,700			15,700
System Energy [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year	12,760			12,760
Defined Benefit Plan, Plan Assets, Contributions by Employer				6,187
Subsequent Event [Member] | Entergy Arkansas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 19,308
Subsequent Event [Member] | Entergy Louisiana [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Contributions by Employer			9,507
Subsequent Event [Member] | Entergy Mississippi [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Contributions by Employer			7,410
Subsequent Event [Member] | Entergy New Orleans [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Contributions by Employer			0
Subsequent Event [Member] | Entergy Texas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Contributions by Employer			438
Subsequent Event [Member] | System Energy [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Contributions by Employer			$ 6,573
Non Qualified Pension Plans [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	7,200	$ 4,600		17,400	$ 9,200
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	2,500			7,800
Non Qualified Pension Plans [Member] | Entergy Arkansas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	71	90		143	180
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	26	44		53	88
Non Qualified Pension Plans [Member] | Entergy Mississippi [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	79	96		161	192
Defined Benefit Plan, Benefit Obligation, Payment for Settlement				2
Non Qualified Pension Plans [Member] | Entergy New Orleans [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	27	8		56	16
Non Qualified Pension Plans [Member] | Entergy Texas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	88	115		303	230
Defined Benefit Plan, Benefit Obligation, Payment for Settlement				119
Pension Plans Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	65,634	188,642		111,385	278,657
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(22,653)	(111,549)		(22,653)	(111,549)
Pension Plans Defined Benefit [Member] | Entergy Arkansas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	21,773	39,003		32,127	54,393
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(11,496)	(24,386)		(11,496)	(24,386)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	15,394	49,989		26,494	66,258
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(4,461)	(34,992)		(4,461)	(34,992)
Pension Plans Defined Benefit [Member] | Entergy Mississippi [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	5,535	12,346		8,950	17,254
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(2,208)	(7,762)		(2,208)	(7,762)
Pension Plans Defined Benefit [Member] | Entergy New Orleans [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	744	4,866		1,488	6,339
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	0	(3,585)		0	(3,585)
Pension Plans Defined Benefit [Member] | Entergy Texas [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	3,851	8,578		5,276	10,801
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(2,466)	(6,626)		(2,466)	(6,626)
Pension Plans Defined Benefit [Member] | System Energy [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	5,003	9,256		8,029	14,257
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	$ (2,023)	$ (4,638)		$ (2,023)	$ (4,638)