Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Credit Facilities) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Amount of Facility	$ 3,500,000
Amount Drawn/ Outstanding	616,000
Letters of Credit Outstanding, Amount	$ 400
Entergy Arkansas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Expiration Date	Aug. 14, 2020
Amount of Facility	$ 150,000	[1]
Interest Rate	1.68%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 0
Entergy Arkansas [Member] | Credit Facility Of Twenty Million [Member]
Expiration Date	Apr. 30, 2016
Amount of Facility	$ 20,000	[3]
Interest Rate	1.93%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 0
Entergy Louisiana [Member] | Credit Facility Of Three Hundred Fifty Million [Member]
Expiration Date	Aug. 14, 2020
Amount of Facility	$ 350,000	[4]
Interest Rate	1.68%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	3,100
Entergy Mississippi [Member]
Letters of Credit Outstanding, Amount	$ 400
Entergy Mississippi [Member] | Credit Facility Of Thirty Seven Point Five Million [Member]
Expiration Date	May 31, 2016
Amount of Facility	$ 37,500	[5]
Interest Rate	1.93%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 0
Entergy Mississippi [Member] | Credit Facility Of Thirty Five Million [Member]
Expiration Date	May 31, 2016
Amount of Facility	$ 35,000	[5]
Interest Rate	1.93%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 0
Entergy Mississippi [Member] | Credit Facility Of Twenty Million [Member]
Expiration Date	May 31, 2016
Amount of Facility	$ 20,000	[5]
Interest Rate	1.93%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 0
Entergy Mississippi [Member] | Credit Facility Of Ten Million [Member]
Expiration Date	May 31, 2016
Amount of Facility	$ 10,000	[5]
Interest Rate	1.93%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 0
Entergy New Orleans [Member] | Credit Facility Of Twenty Five Million [Member]
Expiration Date	Nov. 30, 2018
Amount of Facility	$ 25,000
Interest Rate	2.18%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 0
Entergy Texas [Member] | Credit Facility Of One Hundred And Fifty Million [Member]
Expiration Date	Aug. 14, 2020
Amount of Facility	$ 150,000	[6]
Interest Rate	1.93%	[2]
Amount Drawn/ Outstanding	$ 0
Letters of Credit Outstanding, Amount	$ 1,300

[1] The credit facility allows Entergy Arkansas to issue letters of credit against 50% of the borrowing capacity of the facility.

[2] The interest rate is the rate as of March 31, 2016 that would most likely apply to outstanding borrowings under the facility.

[3] Borrowings under the Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable at Entergy Arkansas’s option. The credit facility expired in April 2016. Entergy Arkansas plans to renew the credit facility.

[4] The credit facility allows Entergy Louisiana to issue letters of credit against 50% of the borrowing capacity of the facility.

[5] Borrowings under the Entergy Mississippi credit facilities may be secured by a security interest in its accounts receivable at Entergy Mississippi’s option. Entergy Mississippi expects to renew its credit facilities prior to expiration.

[6] The credit facility allows Entergy Texas to issue letters of credit against 50% of the borrowing capacity of the facility.