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Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Issuance Of Commercial Paper To Finance Acquisition And Ownership Of Nuclear Fuel) (Details) (USD $) | 3 Months Ended
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Mar. 31, 2014
Issuance of commercial paper to finance the acquisition and ownership of nuclear fuel |  |
Amount Drawn/ Outstanding | $ 115,000,000 |
Entergy Arkansas VIE [Member] |  |
Issuance of commercial paper to finance the acquisition and ownership of nuclear fuel |  |
Expiration Date | Jun. 30, 2016 |
Amount of Facility | 85,000,000 |
Weighted Average Interest Rate on Borrowings | 1.57% | [1]
Amount Drawn/ Outstanding | 62,500,000 |
Entergy Gulf States Louisiana VIE [Member] |  |
Issuance of commercial paper to finance the acquisition and ownership of nuclear fuel |  |
Expiration Date | Jun. 30, 2016 |
Amount of Facility | 100,000,000 |
Weighted Average Interest Rate on Borrowings | 1.25% | [1]
Amount Drawn/ Outstanding | 300,000 |
Entergy Louisiana VIE [Member] |  |
Issuance of commercial paper to finance the acquisition and ownership of nuclear fuel |  |
Expiration Date | Jun. 30, 2016 |
Amount of Facility | 90,000,000 |
Weighted Average Interest Rate on Borrowings | 1.50% | [1]
Amount Drawn/ Outstanding | 31,700,000 |
System Energy VIE [Member] |  |
Issuance of commercial paper to finance the acquisition and ownership of nuclear fuel |  |
Expiration Date | Jun. 30, 2016 |
Amount of Facility | 125,000,000 |
Weighted Average Interest Rate on Borrowings | 1.64% | [1]
Amount Drawn/ Outstanding | $ 52,700,000 |
[1] | Includes letter of credit fees and bank fronting fees on commercial paper issuances by the nuclear fuel company variable interest entities for Entergy Arkansas, Entergy Louisiana, and System Energy. The nuclear fuel company variable interest entity for Entergy Gulf States Louisiana does not issue commercial paper, but borrows directly on its bank credit facility.

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- Definition Variable Interest Entities, Expiration Date + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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