Summary Of Significant Accounting Policies (Schedule Of Depreciation Rates On Average Depreciable Property) (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Entergy Arkansas [Member]
Depreciation rates on average depreciable property	2.70%	2.70%	2.60%
Entergy Louisiana [Member]
Depreciation rates on average depreciable property	2.40%	2.40%	2.40%
Entergy Mississippi [Member]
Depreciation rates on average depreciable property	3.60%	3.60%	3.50%
Entergy New Orleans [Member]
Depreciation rates on average depreciable property	3.20%	3.20%	3.10%
Entergy Texas [Member]
Depreciation rates on average depreciable property	3.10%	3.20%	3.10%
System Energy [Member]
Depreciation rates on average depreciable property	2.00%	1.90%	2.10%