Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule Of Accumulated Benefit Obligations) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Non-Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	$ 131,400	$ 180,600
Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	5,200,000	5,400,000
Entergy Arkansas [Member] | Non-Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	3,765	3,856
Entergy Arkansas [Member] | Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	1,107,023	1,161,448
Entergy Gulf States Louisiana [Member] | Non-Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	2,510	2,899
Entergy Gulf States Louisiana [Member] | Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	530,974	559,190
Entergy Louisiana [Member] | Non-Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	50	116
Entergy Louisiana [Member] | Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	697,945	735,376
Entergy Mississippi [Member] | Non-Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	1,528	1,590
Entergy Mississippi [Member] | Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	318,941	336,099
Entergy New Orleans [Member] | Non-Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	387	427
Entergy New Orleans [Member] | Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	150,239	157,233
Entergy Texas [Member] | Non-Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	7,496	9,127
Entergy Texas [Member] | Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	332,484	350,351
System Energy [Member] | Qualified Pension Plans [Member]
Accumulated Pension Benefit Obligation	$ 247,807	$ 251,378