Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Credit Facilities) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Aug. 31, 2022	Dec. 31, 2021
Amount of Facility	$ 3,500.0
Amount Drawn/ Outstanding	150.0
Entergy Arkansas [Member]
Amount of total borrowing capacity against which fronting commitments exist	5.0
Entergy Arkansas [Member] | Credit Facility Of Twenty Five Million [Member]
Amount of Facility	$ 25.0
Interest Rate	4.37%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Arkansas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Amount of Facility	$ 150.0
Interest Rate	4.26%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Louisiana [Member]
Amount of total borrowing capacity against which fronting commitments exist	15.0
Letters of Credit Outstanding, Amount	0.9
Entergy Louisiana [Member] | Credit Facility Of Three Hundred Fifty Million [Member]
Amount of Facility	$ 350.0	$ 350.0
Interest Rate	4.38%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Mississippi [Member]
Letters of Credit Outstanding, Amount	0.8		$ 0.2
Entergy Mississippi [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Amount of Facility	$ 150.0
Interest Rate	3.97%
Amount Drawn/ Outstanding	$ 100.0
Letters of Credit Outstanding, Amount	0.0
Entergy Mississippi [Member] | Credit Facility Of Ten Million [Member]
Amount of Facility	$ 10.0
Interest Rate	4.63%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Mississippi [Member] | Credit Facility Of Forty Five Million
Amount of Facility	$ 45.0
Interest Rate	4.63%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Mississippi [Member] | Credit Facility Of Forty Million
Amount of Facility	$ 40.0
Interest Rate	4.63%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy New Orleans [Member]
Amount of total borrowing capacity against which fronting commitments exist	10.0
Letters of Credit Outstanding, Amount	0.1
Entergy New Orleans [Member] | Credit Facility Of Twenty Five Million [Member]
Amount of Facility	$ 25.0
Interest Rate	4.74%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Texas [Member]
Amount of total borrowing capacity against which fronting commitments exist	30.0
Letters of Credit Outstanding, Amount	0.8		$ 0.1
Entergy Texas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Amount of Facility	$ 150.0
Interest Rate	4.38%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	$ 1.1