Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Contributions To Defined Contribution Plans) (Details) (Defined Contribution Plans [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Entergy Arkansas [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 3,044	$ 3,351	$ 3,223
Entergy Gulf States Louisiana [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	1,867	1,906	1,842
Entergy Louisiana [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	2,266	2,393	2,327
Entergy Mississippi [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	1,855	1,954	1,875
Entergy New Orleans [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	710	769	740
Entergy Texas [Member]
Defined Contribution Plan, Employer Discretionary Contribution Amount	$ 1,563	$ 1,616	$ 1,601