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Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Credit Facilities) (Details) (USD $) | 6 Months Ended
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Jun. 30, 2014
Amount of Facility | $ 3,500,000,000 |
Amount Drawn/ Outstanding | 195,000,000 |
Entergy Arkansas [Member] | Credit Facility Of One Hundred And Fifty Million [Member] |  |
Expiration Date | Mar. 08, 2019 |
Amount of Facility | 150,000,000 | [1]
Interest Rate | 1.65% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Arkansas [Member] | Credit Facility Of Twenty Million [Member] |  |
Expiration Date | Apr. 30, 2015 |
Amount of Facility | 20,000,000 | [3]
Interest Rate | 1.65% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Gulf States Louisiana [Member] | Credit Facility Of One Hundred And Fifty Million [Member] |  |
Expiration Date | Mar. 08, 2019 |
Amount of Facility | 150,000,000 | [4]
Interest Rate | 1.40% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Louisiana [Member] | Credit Facility Of Two Hundred Million [Member] |  |
Expiration Date | Mar. 08, 2019 |
Amount of Facility | 200,000,000 | [5]
Interest Rate | 1.40% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Mississippi [Member] |  |
Amount Drawn/ Outstanding | 9,600,000 |
Entergy Mississippi [Member] | Credit Facility Of Thirty Seven Point Five Million [Member] |  |
Expiration Date | May 31, 2015 |
Amount of Facility | 37,500,000.0 | [6]
Interest Rate | 1.65% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Mississippi [Member] | Credit Facility Of Thirty Five Million [Member] |  |
Expiration Date | May 31, 2015 |
Amount of Facility | 35,000,000 | [6]
Interest Rate | 1.65% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Mississippi [Member] | Credit Facility Of Twenty Million [Member] |  |
Expiration Date | May 31, 2015 |
Amount of Facility | 20,000,000 | [6]
Interest Rate | 1.65% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Mississippi [Member] | Credit Facility Of Ten Million [Member] |  |
Expiration Date | May 31, 2015 |
Amount of Facility | 10,000,000 | [6]
Interest Rate | 1.65% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy New Orleans [Member] | Credit Facility Of Twenty Five Million [Member] |  |
Expiration Date | Nov. 30, 2014 |
Amount of Facility | 25,000,000 |
Interest Rate | 1.90% | [2]
Amount Drawn/ Outstanding | 0 |
Entergy Texas [Member] | Credit Facility Of One Hundred And Fifty Million [Member] |  |
Expiration Date | Mar. 31, 2019 |
Amount of Facility | 150,000,000 | [7]
Interest Rate | 1.65% | [2]
Amount Drawn/ Outstanding | $ 0 |
[1] | The credit facility allows Entergy Arkansas to issue letters of credit against 50% of the borrowing capacity of the facility. As of June 30, 2014, $11 million in letters of credit were outstanding.
[2] | The interest rate is the rate as of June 30, 2014 that would most likely apply to outstanding borrowings under the facility.
[3] | Borrowings under the Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable at Entergy Arkansas’s option.
[4] | The credit facility allows Entergy Gulf States Louisiana to issue letters of credit against 50% of the borrowing capacity of the facility. As of June 30, 2014, $50 million in letters of credit were outstanding.
[5] | The credit facility allows Entergy Louisiana to issue letters of credit against 50% of the borrowing capacity of the facility. As of June 30, 2014, $7.4 million in letters of credit were outstanding.
[6] | Borrowings under the Entergy Mississippi credit facilities may be secured by a security interest in its accounts receivable
[7] | The credit facility allows Entergy Texas to issue letters of credit against 50% of the borrowing capacity of the facility. As of June 30, 2014, $23.3 million in letters of credit were outstanding.

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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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Balance Type: | credit
Period Type: | instant

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- Definition Date the credit facility terminates, in CCYY-MM-DD format. + 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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- Definition The effective interest rate during the reporting period. + 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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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the 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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