Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Credit Facilities) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($)
Entergy Arkansas [Member] | Credit Facility Of Twenty Five Million [Member]
Line of credit facility, maximum borrowing capacity	$ 25.0
Interest Rate	2.75%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Arkansas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Line of credit facility, maximum borrowing capacity	$ 150.0
Interest Rate	1.23%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Amount of total borrowing capacity against which fronting commitments exist	$ 5.0
Entergy Arkansas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Expiration Date	Jun. 30, 2026
Entergy Arkansas [Member] | Credit Facility Of Twenty Five Million [Member]
Expiration Date	Apr. 30, 2022
Entergy Louisiana [Member] | Credit Facility Of Three Hundred and Fifty Million [Member]
Line of credit facility, maximum borrowing capacity	$ 350.0
Interest Rate	1.32%
Amount Drawn/ Outstanding	$ 125.0
Letters of Credit Outstanding, Amount	0.0
Amount of total borrowing capacity against which fronting commitments exist	$ 15.0
Entergy Louisiana [Member] | Credit Facility Of Three Hundred Fifty Million [Member]
Expiration Date	Jun. 30, 2026
Entergy Mississippi [Member] | Credit Facility Of Ten Million [Member]
Line of credit facility, maximum borrowing capacity	$ 10.0
Interest Rate	1.60%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Mississippi [Member] | Credit Facility Of Thirty Five Million [Member]
Line of credit facility, maximum borrowing capacity	$ 35.0
Interest Rate	1.60%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Entergy Mississippi [Member] | Credit Facility Of Thirty Seven Point Five Million [Member]
Line of credit facility, maximum borrowing capacity	$ 37.5
Interest Rate	1.60%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	$ 0.0
Entergy Mississippi [Member] | Credit Facility Of Thirty Five Million [Member]
Expiration Date	Apr. 30, 2022
Entergy Mississippi [Member] | Credit Facility Of Ten Million [Member]
Expiration Date	Apr. 30, 2022
Entergy Mississippi [Member] | Credit Facility Of Thirty Seven Point Five Million [Member]
Expiration Date	Apr. 30, 2022
Entergy Texas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Line of credit facility, maximum borrowing capacity	$ 150.0
Interest Rate	1.60%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	1.3
Amount of total borrowing capacity against which fronting commitments exist	$ 30.0
Entergy Texas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Expiration Date	Jun. 30, 2026
Entergy New Orleans [Member] | Credit Facility Of Twenty Five Million [Member]
Line of credit facility, maximum borrowing capacity	$ 25.0
Interest Rate	1.73%
Amount Drawn/ Outstanding	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Amount of total borrowing capacity against which fronting commitments exist	$ 10.0
Entergy New Orleans [Member] | Credit Facility Of Twenty Five Million [Member]
Expiration Date	Jun. 30, 2024