Property, Plant, And Equipment (Narrative) (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Construction expenditures in accounts payable	$ 499.0	$ 459.0
Entergy Arkansas [Member]
Construction expenditures in accounts payable	113.2	93.2
Entergy Louisiana [Member]
Construction expenditures in accounts payable	136.1	154.3
Entergy Mississippi [Member]
Construction expenditures in accounts payable	66.8	59.5
Entergy New Orleans [Member]
Construction expenditures in accounts payable	8.5	11.2
Entergy Texas [Member]
Construction expenditures in accounts payable	104.6	68.9
System Energy [Member]
Construction expenditures in accounts payable	$ 17.7	$ 29.0