Retirement, Other Postretirement Benefits, And Defined Contribution Plans Schedule Of Accumulated Benefit Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	$ 5,600,000	$ 5,700,000
Non Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	77,900	140,000
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(4,434)	(858)
Defined Benefit Plan, Plan Assets, Contributions by Employer	49,126	52,835
Defined Benefit Plan Regulatory Liability Before Tax	(55,082)	(12,367)
Entergy Arkansas [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	1,048,901	1,008,152
Entergy Arkansas [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	1,935	2,192
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	273
Defined Benefit Plan, Plan Assets, Contributions by Employer	582	1,573
Defined Benefit Plan Regulatory Asset Before Tax		12,303
Defined Benefit Plan Regulatory Liability Before Tax	(12,997)
Entergy Louisiana [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	1,085,318	1,146,561
Entergy Louisiana [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	2,494	1,197
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(4,434)	323
Defined Benefit Plan, Plan Assets, Contributions by Employer	20,451	16,187
Defined Benefit Plan Regulatory Asset Before Tax	0	0
Entergy Mississippi [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	273,338	292,596
Entergy Mississippi [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	3,187	3,594
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	(1,300)
Defined Benefit Plan, Plan Assets, Contributions by Employer	646	759
Defined Benefit Plan Regulatory Liability Before Tax	(7,497)	(1,484)
Entergy New Orleans [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	125,878	128,499
Entergy New Orleans [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	814	719
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	0
Defined Benefit Plan, Plan Assets, Contributions by Employer	213	333
Defined Benefit Plan Regulatory Liability Before Tax	(7,825)	(669)
Entergy Texas [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	225,379	245,428
Entergy Texas [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	3,701	3,776
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	0
Defined Benefit Plan, Plan Assets, Contributions by Employer	235
Defined Benefit Plan Regulatory Asset Before Tax	2,752	8,085
System Energy [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	267,432	269,583
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	141
Defined Benefit Plan, Plan Assets, Contributions by Employer	480	944
Defined Benefit Plan Regulatory Asset Before Tax		$ 3,265
Defined Benefit Plan Regulatory Liability Before Tax	$ (384)