Retirement, Other Postretirement Benefits, And Defined Contribution Plans (One Percentage Point Change In Assumed Health Care Cost Trend Rate) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
1 Percentage Point Increase, Impact on the APBO	$ 173,530
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	23,366
1 Percentage Point Decrease, Impact on the APBO	143,969
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	18,781
Entergy Arkansas [Member]
1 Percentage Point Increase, Impact on the APBO	27,205
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	3,275
1 Percentage Point Decrease, Impact on the APBO	(22,483)
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	(2,622)
Entergy Gulf States Louisiana [Member]
1 Percentage Point Increase, Impact on the APBO	21,873
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	2,792
1 Percentage Point Decrease, Impact on the APBO	(17,958)
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	(2,219)
Entergy Louisiana [Member]
1 Percentage Point Increase, Impact on the APBO	18,025
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	2,514
1 Percentage Point Decrease, Impact on the APBO	(15,012)
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	(2,031)
Entergy Mississippi [Member]
1 Percentage Point Increase, Impact on the APBO	8,235
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	1,072
1 Percentage Point Decrease, Impact on the APBO	(6,819)
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	(858)
Entergy New Orleans [Member]
1 Percentage Point Increase, Impact on the APBO	4,995
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	562
1 Percentage Point Decrease, Impact on the APBO	(4,242)
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	(461)
Entergy Texas [Member]
1 Percentage Point Increase, Impact on the APBO	13,439
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	1,483
1 Percentage Point Decrease, Impact on the APBO	(11,170)
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	(1,189)
System Energy [Member]
1 Percentage Point Increase, Impact on the APBO	7,022
1 Percentage Point Increase, Impact on the sum of service costs and interest cost	1,064
1 Percentage Point Decrease, Impact on the APBO	(5,746)
1 Percentage Point Decrease, Impact on the sum of service costs and interest cost	$ (847)