Rate And Regulatory Matters (Fuel And Purchased Power Cost Recovery) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Fuel Cost Non Current	$ 239,892	$ 239,496
Entergy Arkansas [Member]
Deferred Fuel Cost - Net Asset	14,000	86,500
Deferred Fuel Cost Non Current	67,690	67,294
Entergy Louisiana [Member]
Deferred Fuel Cost - Net Asset	112,500	136,700
Deferred Fuel Cost Non Current	168,122	168,122
Entergy Mississippi [Member]
Deferred Fuel Cost - Net Asset		8,000
Deferred Fuel Cost - Net Liability	(70,400)
Entergy New Orleans [Member]
Deferred Fuel Cost - Net Asset		2,800
Deferred Fuel Cost - Net Liability	(800)
Deferred Fuel Cost Non Current	4,080	4,080
Entergy Texas [Member]
Deferred Fuel Cost - Net Liability	$ (13,000)	$ (19,700)