Retirement And Other Postretirement Benefits (Expected Employer Contributions) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Change in Plan Assets
Pension contributions made through Year To Date	$ 58,300
Entergy Arkansas [Member]
Change in Plan Assets
Expected current year pension contributions	93,999
Pension contributions made through Year To Date	13,653
Remaining estimated pension contributions to be made in current year	80,346
Entergy Gulf States Louisiana [Member]
Change in Plan Assets
Expected current year pension contributions	31,119
Pension contributions made through Year To Date	4,418
Remaining estimated pension contributions to be made in current year	26,701
Entergy Louisiana [Member]
Change in Plan Assets
Expected current year pension contributions	53,047
Pension contributions made through Year To Date	7,808
Remaining estimated pension contributions to be made in current year	45,239
Entergy Mississippi [Member]
Change in Plan Assets
Expected current year pension contributions	21,540
Pension contributions made through Year To Date	3,119
Remaining estimated pension contributions to be made in current year	18,421
Entergy New Orleans [Member]
Change in Plan Assets
Expected current year pension contributions	10,495
Pension contributions made through Year To Date	1,540
Remaining estimated pension contributions to be made in current year	8,955
Entergy Texas [Member]
Change in Plan Assets
Expected current year pension contributions	18,302
Pension contributions made through Year To Date	2,610
Remaining estimated pension contributions to be made in current year	15,692
System Energy [Member]
Change in Plan Assets
Expected current year pension contributions	21,388
Pension contributions made through Year To Date	3,130
Remaining estimated pension contributions to be made in current year	$ 18,258