Retirement And Other Postretirement Benefits (Expected Employer Contributions) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Change in Plan Assets
Expected current year pension contributions	$ 400,000
Pension contributions made through Year To Date	138,100
Entergy Arkansas [Member]
Change in Plan Assets
Expected current year pension contributions	93,999
Pension contributions made through Year To Date	32,746
Remaining estimated pension contributions to be made in current year	61,253
Entergy Gulf States Louisiana [Member]
Change in Plan Assets
Expected current year pension contributions	31,119
Pension contributions made through Year To Date	10,377
Remaining estimated pension contributions to be made in current year	20,742
Entergy Louisiana [Member]
Change in Plan Assets
Expected current year pension contributions	53,047
Pension contributions made through Year To Date	18,882
Remaining estimated pension contributions to be made in current year	34,165
Entergy Mississippi [Member]
Change in Plan Assets
Expected current year pension contributions	21,540
Pension contributions made through Year To Date	7,504
Remaining estimated pension contributions to be made in current year	14,036
Entergy New Orleans [Member]
Change in Plan Assets
Expected current year pension contributions	10,495
Pension contributions made through Year To Date	3,641
Remaining estimated pension contributions to be made in current year	6,854
Entergy Texas [Member]
Change in Plan Assets
Expected current year pension contributions	18,302
Pension contributions made through Year To Date	5,889
Remaining estimated pension contributions to be made in current year	12,413
System Energy [Member]
Change in Plan Assets
Expected current year pension contributions	21,388
Pension contributions made through Year To Date	7,300
Remaining estimated pension contributions to be made in current year	$ 14,088