Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Contributions To Defined Contribution Plans) (Details) - Defined Contribution Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Entergy Arkansas [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 3,528	$ 3,242	$ 3,044
Entergy Louisiana [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	4,746	4,324	4,133
Entergy Mississippi [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	1,997	1,920	1,855
Entergy New Orleans [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	708	721	710
Entergy Texas [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 1,778	$ 1,620	$ 1,563