Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Expected Employer Contributions) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Entergy Arkansas [Member] | Pension Plans, Defined Benefit [Member]
Change in Plan Assets
Expected Employer Contributions	$ 93,591
Entergy Arkansas [Member] | Other Postretirement [Member]
Change in Plan Assets
Expected Employer Contributions	25,567
Entergy Gulf States Louisiana [Member] | Pension Plans, Defined Benefit [Member]
Change in Plan Assets
Expected Employer Contributions	31,342
Entergy Gulf States Louisiana [Member] | Other Postretirement [Member]
Change in Plan Assets
Expected Employer Contributions	9,385
Entergy Louisiana [Member] | Pension Plans, Defined Benefit [Member]
Change in Plan Assets
Expected Employer Contributions	52,885
Entergy Louisiana [Member] | Other Postretirement [Member]
Change in Plan Assets
Expected Employer Contributions	10,967
Entergy Mississippi [Member] | Pension Plans, Defined Benefit [Member]
Change in Plan Assets
Expected Employer Contributions	21,604
Entergy Mississippi [Member] | Other Postretirement [Member]
Change in Plan Assets
Expected Employer Contributions	0
Entergy New Orleans [Member] | Pension Plans, Defined Benefit [Member]
Change in Plan Assets
Expected Employer Contributions	10,482
Entergy New Orleans [Member] | Other Postretirement [Member]
Change in Plan Assets
Expected Employer Contributions	0
Entergy Texas [Member] | Pension Plans, Defined Benefit [Member]
Change in Plan Assets
Expected Employer Contributions	18,482
Entergy Texas [Member] | Other Postretirement [Member]
Change in Plan Assets
Expected Employer Contributions	4,645
System Energy [Member] | Pension Plans, Defined Benefit [Member]
Change in Plan Assets
Expected Employer Contributions	21,257
System Energy [Member] | Other Postretirement [Member]
Change in Plan Assets
Expected Employer Contributions	$ 864