Commitments And Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-

Entergy Arkansas [Member]

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-

Entergy Gulf States Louisiana [Member]

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-

Entergy Louisiana [Member]

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-

Entergy Mississippi [Member]

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-

Entergy New Orleans [Member]

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-

Entergy Texas [Member]

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-

System Energy [Member]

Maximum Amounts Of Possible Assessments Per Occurence

	Assessments
	(In Millions)
Utility:
Entergy Arkansas	$21.9
Entergy Gulf States Louisiana	$18.9
Entergy Louisiana	$22.0
Entergy Mississippi	$0.07
Entergy New Orleans	$0.07
Entergy Texas	N/A
System Energy	$18.4
Entergy Wholesale Commodities	$-