Income Taxes (Summary of net regulatory liabilities for income taxes related to Tax Cuts and Jobs Act) (Details) - USD ($) $ in Thousands	1 Months Ended
	Oct. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Entergy Arkansas [Member]
Net Regulatory Liabilities for Income Taxes		$ 418	$ 392
Entergy Louisiana [Member]
Net Regulatory Liabilities for Income Taxes		355	194
Entergy Louisiana [Member] | Excess accumulated deferred income taxes as a result of the Tax Cuts and Jobs Act [Member]
Increase (Decrease) in Regulatory Assets and Liabilities	$ 106,000
Entergy Mississippi [Member]
Net Regulatory Liabilities for Income Taxes		181	189
Entergy New Orleans [Member]
Net Regulatory Liabilities for Income Taxes		15	36
Entergy Texas [Member]
Net Regulatory Liabilities for Income Taxes		94	115
System Energy [Member]
Net Regulatory Liabilities for Income Taxes		$ 105	$ 107