Long - Term Debt (Schedule Of Maturities Of Long-term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
2014	$ 385,373
2015	1,110,566
2016	270,852
2017	766,801
2018	1,324,616
Entergy Arkansas [Member]
2014	70,000
2015	250,000
2016	55,000
2017	114,700
2018	115,000
Entergy Gulf States Louisiana [Member]
2014	0
2015	31,955
2016	14,800
2017	75,000
2018	375,000
Entergy Louisiana [Member]
2014	300,000
2015	0
2016	20,000
2017	25,000
2018	300,000
Entergy Mississippi [Member]
2014	0
2015	0
2016	125,000
2017	0
2018	95,000
Entergy New Orleans [Member]
2014	0
2015	0
2016	0
2017	0
2018	0
Entergy Texas [Member]
2014	0
2015	200,000
2016	54,047
2017	0
2018	97,414
System Energy [Member]
2014	0
2015	60,000
2016	0
2017	50,000
2018	$ 85,000