Income Taxes Income Taxes (Tax Cuts and Jobs Act) (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Reduction to Regulatory Liability due to return of unprotected excess ADIT	$ 0	$ 53,000
Entergy Arkansas [Member]
Net Regulatory Liabilities for Income Taxes	392	435
Entergy Louisiana [Member]
Net Regulatory Liabilities for Income Taxes	194	338
Reduction to Regulatory Liability due to return of unprotected excess ADIT		25,000
Entergy Mississippi [Member]
Net Regulatory Liabilities for Income Taxes	189	202
Entergy New Orleans [Member]
Net Regulatory Liabilities for Income Taxes	36	40
Reduction to Regulatory Liability due to return of unprotected excess ADIT		1,000
Entergy Texas [Member]
Net Regulatory Liabilities for Income Taxes	115	133
Reduction to Regulatory Liability due to return of unprotected excess ADIT		27,000
System Energy [Member]
Net Regulatory Liabilities for Income Taxes	$ 107	$ 111