Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
	Aug. 31, 2024	Dec. 31, 2024	Jan. 01, 2025	Sep. 30, 2024
Entergy Nuclear Vermont Yankee [Member]
Commitments and Contingencies [Line Items]
Litigation Settlement, Amount Awarded from Other Party	$ 177
Entergy Nuclear Vermont Yankee [Member] | Subsequent Event [Member]
Commitments and Contingencies [Line Items]
Proceeds from Legal Settlements		$ 127
Entergy Arkansas [Member]
Commitments and Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement				36.00%
Entergy Arkansas [Member] | Subsequent Event [Member]
Commitments and Contingencies [Line Items]
Percentage of purchases under MSS-4 replacement tariff			2.43%
Entergy Louisiana [Member]
Commitments and Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement				14.00%
Entergy Louisiana [Member] | Subsequent Event [Member]
Commitments and Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement			14.00%
Entergy Mississippi [Member]
Commitments and Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement				33.00%
Entergy New Orleans [Member]
Commitments and Contingencies [Line Items]
Percentage of capacity and energy purchases under Unit Power Sales Agreement				17.00%