Retirement And Other Postretirement Benefits (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2023	Jun. 30, 2023	Jun. 30, 2022
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	$ 54,468			$ 54,468
Defined Benefit Plan, Plan Assets, Contributions by Employer				18,444
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	44,565			44,565
Defined Benefit Plan, Plan Assets, Contributions by Employer				13,518
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	21,110			21,110
Defined Benefit Plan, Plan Assets, Contributions by Employer				7,130
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	1,420			1,420
Defined Benefit Plan, Plan Assets, Contributions by Employer				355
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	5,314			5,314
Defined Benefit Plan, Plan Assets, Contributions by Employer				1,438
Difference between rate case pension amounts and actuarially determined pension amounts	39,200			39,200
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	15,543			15,543
Defined Benefit Plan, Plan Assets, Contributions by Employer				5,529
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			$ 36,024
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			31,047
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			13,980
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			1,065
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			3,876
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			$ 10,014
Non Qualified Pension Plans [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Net other postretirement benefit cost	8,800	$ 7,200		18,000	$ 17,400
Defined Benefit Plan, Plan Assets, Payment for Settlement	4,600	2,500		9,300	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	63	71		513	143
Defined Benefit Plan, Plan Assets, Payment for Settlement				379
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	25	26		52	53
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	87	79		639	161
Defined Benefit Plan, Plan Assets, Payment for Settlement				453	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	33	27		66	56
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	63	88		126	303
Defined Benefit Plan, Plan Assets, Payment for Settlement					119
Pension Plans Defined Benefit [Member]
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Defined Benefit Plan, Plan Assets, Contributions by Employer				91,500
Net other postretirement benefit cost	32,200	65,634		196,221	111,385
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(7,246)	(22,653)		(145,674)	(22,653)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	267,000			267,000
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	8,247	21,773		38,343	32,127
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(1,784)	(11,496)		(23,958)	(11,496)
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	9,601	15,394		52,989	26,494
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(2,232)	(4,461)		(38,230)	(4,461)
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	2,360	5,535		16,308	8,950
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(88)	(2,208)		(11,743)	(2,208)
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	337	744		2,482	1,488
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(7)	0		(1,700)	0
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	1,880	3,851		12,745	5,276
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	(592)	(2,466)		(10,270)	(2,466)
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	2,143	5,003		8,861	8,029
Defined Benefit Plan, Benefit Obligation, Payment for Settlement	$ (490)	$ (2,023)		$ (5,290)	$ (2,023)