Rate And Regulatory Matters (Fuel And Purchased Power Cost Recovery) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Jul. 31, 2022	Jan. 31, 2022
Deferred Fuel Cost Non Current		$ 172,201	$ 241,085
Asset Impairment Charges		42,679	(163,464)	$ 263,625
Entergy Arkansas [Member]
Deferred Fuel Cost - Net Asset			208,600
Deferred Fuel Cost Non Current		0	68,883
Deferred Fuel Cost - Net Liability		(88,300)
Asset Impairment Charges		78,434	0	0
Entergy Louisiana [Member]
Deferred Fuel Cost - Net Asset		192,900	327,300
Deferred Fuel Cost Non Current		168,122	168,122
Entergy Mississippi [Member]
Deferred Fuel Cost - Net Asset			143,200	$ 121,900	$ 291,700	$ 100,000
Deferred Fuel Cost - Net Liability		(130,600)
Entergy New Orleans [Member]
Deferred Fuel Cost - Net Asset		10,200	14,200
Deferred Fuel Cost Non Current		4,080	4,080
Entergy Texas [Member]
Deferred Fuel Cost - Net Asset		$ 139,000	$ 258,100
Deferred Fuel Costs [Member] | Entergy Arkansas [Member]
Asset Impairment Charges	$ 68,900