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Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Tables)
6 Months Ended
Jun. 30, 2013
Summary Of The Borrowings Outstanding And Capacity Available Under The Facility
Capacity (a)
 
Borrowings
 
Letters
of Credit
 
Capacity
Available
(In Millions)
             
$3,500 
 
$190
 
$8
 
$3,302
Credit Facilities
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Issuance Of Commercial Paper To Finance Acquisition And Ownership Of Nuclear Fuel
Notes Payable By Variable Interest Entities
Book Value And The Fair Value Of Long-Term Debt
Entergy Arkansas [Member]
 
Credit Facilities
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Issuance Of Commercial Paper To Finance Acquisition And Ownership Of Nuclear Fuel
Notes Payable By Variable Interest Entities
Book Value And The Fair Value Of Long-Term Debt
Entergy Gulf States Louisiana [Member]
 
Credit Facilities
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Issuance Of Commercial Paper To Finance Acquisition And Ownership Of Nuclear Fuel
Notes Payable By Variable Interest Entities
Book Value And The Fair Value Of Long-Term Debt
Entergy Louisiana [Member]
 
Credit Facilities
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Issuance Of Commercial Paper To Finance Acquisition And Ownership Of Nuclear Fuel
Notes Payable By Variable Interest Entities
Book Value And The Fair Value Of Long-Term Debt
Entergy Mississippi [Member]
 
Credit Facilities
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Book Value And The Fair Value Of Long-Term Debt
Entergy New Orleans
 
Credit Facilities
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Book Value And The Fair Value Of Long-Term Debt
Entergy Texas [Member]
 
Credit Facilities
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Book Value And The Fair Value Of Long-Term Debt
System Energy [Member]
 
Short-Term Borrowings And The Outstanding Short-Term Borrowings
Issuance Of Commercial Paper To Finance Acquisition And Ownership Of Nuclear Fuel
Notes Payable By Variable Interest Entities
Book Value And The Fair Value Of Long-Term Debt