Retirement, Other Postretirement Benefits, And Defined Contribution Plans Schedule Of Projected Benefit Obligations (Details) - Non-Qualified Pension Plans [Member] - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Projected Benefit Obligation	$ 182,400	$ 162,800
Accumulated pension benefit obligation	161,300	143,400
Entergy Arkansas [Member]
Projected Benefit Obligation	3,197	2,755
Accumulated pension benefit obligation	2,626	2,248
Entergy Louisiana [Member]
Projected Benefit Obligation	1,965	1,682
Accumulated pension benefit obligation	1,802	1,682
Entergy Mississippi [Member]
Projected Benefit Obligation	3,852	3,286
Accumulated pension benefit obligation	3,345	2,938
Entergy New Orleans [Member]
Projected Benefit Obligation	247	231
Accumulated pension benefit obligation	240	230
Entergy Texas [Member]
Projected Benefit Obligation	8,475	7,783
Accumulated pension benefit obligation	$ 7,949	$ 7,391