Rate And Regulatory Matters (Fuel And Purchased Power Cost Recovery) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred Fuel Cost Non Current	$ 240,422	$ 239,892
Entergy Arkansas [Member]
Deferred Fuel Cost - Net Asset	15,200	14,000
Deferred Fuel Cost Non Current	68,220	67,690
Entergy Louisiana [Member]
Deferred Fuel Cost - Net Asset	170,400	112,500
Deferred Fuel Cost Non Current	168,122	168,122
Entergy Mississippi [Member]
Deferred Fuel Cost - Net Liability	(14,700)	(70,400)
Entergy New Orleans [Member]
Deferred Fuel Cost - Net Asset	6,200
Deferred Fuel Cost - Net Liability		(800)
Deferred Fuel Cost Non Current	4,080	4,080
Entergy Texas [Member]
Deferred Fuel Cost - Net Liability	$ (85,400)	$ (13,000)