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Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Narrative) (Details) (USD $) | 6 Months Ended |  | 6 Months Ended | 1 Months Ended |  | 1 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended | 1 Months Ended |  | 1 Months Ended | 6 Months Ended | 1 Months Ended | 6 Months Ended |  | 1 Months Ended
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Jun. 30, 2014 | Jun. 30, 2014 Commercial Paper Program [Member] | Jun. 30, 2014 Credit Facility [Member] | Jun. 30, 2014 Entergy Arkansas [Member] | Mar. 31, 2014 Entergy Arkansas [Member] Term Loan [Member] | Mar. 31, 2014 Entergy Arkansas [Member] Three Point Seven Zero Percent Series First Mortgage Bonds Due June Two Thousand Twenty Four [Member] | Jun. 30, 2014 Entergy Arkansas [Member] Three Point Seven Zero Percent Series First Mortgage Bonds Due June Two Thousand Twenty Four [Member] | Apr. 30, 2014 Entergy Arkansas [Member] Five Point Zero Percent Series First Mortgage Bonds Due July Two Thousand Eighteen [Member] | Jun. 30, 2014 Entergy Gulf States Louisiana [Member] | Jun. 30, 2014 Entergy Louisiana [Member] | Feb. 28, 2014 Entergy Louisiana [Member] Three Point Nine Two Percent Series H Dues February Two Thousand Twenty One [Member] | Jun. 30, 2014 Entergy Louisiana [Member] Five Point Zero Percent Series First Mortgage Bonds Due July Two Thousand Forty Four [Member] | Jun. 30, 2014 Entergy Mississippi [Member] | Mar. 31, 2014 Entergy Mississippi [Member] Three Point Seven Five Percent Series First Mortgage Bonds Due July Two Thousand Twenty Four [Member] | Jun. 30, 2014 Entergy Mississippi [Member] Three Point Seven Five Percent Series First Mortgage Bonds Due July Two Thousand Twenty Four [Member] | Apr. 30, 2014 Entergy Mississippi [Member] Four Point Nine Five Percent Series First Mortgage Bonds Due June Two Thousand Eighteen [Member] | Jun. 30, 2014 Entergy Texas [Member] | May 31, 2014 Entergy Texas [Member] Five Point Six Two Five Percent Series First Mortgage Bonds Due June Two Thousand Sixty Four [Member] | May 31, 2014 Entergy Texas [Member] Mortgage Bonds Seven Point Eight Seven Five Percent Series Due June Two Thousand Thirty Nine [Member] | Jun. 30, 2014 System Energy [Member] | Jun. 30, 2014 Entergy New Orleans [Member] | Jun. 30, 2014 Maximum [Member] | Jun. 30, 2014 Minimum [Member] | Jun. 30, 2014 Credit Facility Of One Hundred And Fifty Million [Member] Entergy Arkansas [Member] | Jun. 30, 2014 Credit Facility Of One Hundred And Fifty Million [Member] Entergy Gulf States Louisiana [Member] | Jun. 30, 2014 Credit Facility Of One Hundred And Fifty Million [Member] Entergy Texas [Member] | Jul. 31, 2014 Subsequent Event [Member] Entergy Arkansas [Member] Three Point Six Five Percent Series L Notes Due July Two Thousand Twenty One [Member] | Jul. 31, 2014 Subsequent Event [Member] Entergy Arkansas [Member] Five Point Six Nine Percent Series I Notes Due July Two Thousand Fourteen [Member] | Jul. 31, 2014 Subsequent Event [Member] Entergy Gulf States Louisiana [Member] Three Point Seven Eight Percent Series First Mortgage Bonds Due April Two Thousand Twenty Five [Member] | Jul. 31, 2014 Subsequent Event [Member] Entergy Louisiana [Member] Three Point Seven Eight Percent Series First Mortgage Bonds Due April Two Thousand Twenty Five [Member] | Jul. 31, 2014 Subsequent Event [Member] Entergy Louisiana [Member] Mortgage Bonds Six Point Four Percent Series Due October Two Thousand Thirty Four [Member] | Jul. 31, 2014 Subsequent Event [Member] Entergy Louisiana [Member] Mortgage Bonds Six Point Three Percent Series Due September Two Thousand Thirty Five [Member] | Jul. 31, 2014 Subsequent Event [Member] Entergy Louisiana [Member] Five Point Six Nine Percent Series E Notes Due July Two Thousand Fourteen [Member]
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | $ 3,500,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 150,000,000 | [1] | $ 150,000,000 | [2] | $ 150,000,000 | [3] |  |  |  |  |  |  |
Issuance of letters of credit, percentage of total borrowing capacity | 50.00% |  |  | 50.00% |  |  |  |  | 50.00% | 50.00% |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount |  |  |  |  |  |  |  |  | 50,000,000 | 7,400,000 |  |  |  |  |  |  | 23,300,000 |  |  |  | 3,300,000 |  |  | 11,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, commitment fee percentage | 0.275% |  |  |  |  |  |  |  |  |  |  |  | 1.50% |  |  |  |  |  |  |  | 1.50% | 0.275% | 0.125% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate |  | 0.91% | 1.92% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated debt ratio |  |  |  | 65.00% |  |  |  |  | 65.00% | 65.00% |  |  | 65.00% |  |  |  | 65.00% |  |  |  | 65.00% | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Paper program limit | 1,500,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial Paper Amount Outstanding | 909,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility commitment fee as a percentage of undrawn commitment amount |  |  |  | 0.125% |  |  |  |  | 0.10% | 0.10% |  |  |  |  |  |  |  |  |  | 0.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  |  |  |  |  | 3.70% | 5.00% |  |  | 3.92% | 5.00% |  |  | 3.75% | 4.95% |  | 5.63% | 7.88% |  |  |  |  |  |  |  |  |  |  | 3.65% | 5.69% | 3.78% | 3.78% | 6.40% | 6.30% | 5.69%
Issuance Of Debt |  |  |  |  |  | 375,000,000 |  |  |  |  | 40,000,000 | 170,000,000 |  | 100,000,000 |  |  |  | 135,000,000 |  |  |  |  |  |  |  |  |  |  |  | 90,000,000 |  | 110,000,000 | 190,000,000 |  |  |
Repayments of debt |  |  |  |  | 250,000,000 |  |  | 115,000,000 |  |  |  |  |  |  |  | 95,000,000 |  |  | 150,000,000 |  |  |  |  |  |  |  |  |  |  |  | 70,000,000 |  |  | 70,000,000 | 100,000,000 | 50,000,000
Consolidated debt ratio of total capitalization |  |  |  | 70.00% |  |  |  |  | 70.00% | 70.00% |  |  |  |  |  |  |  |  |  | 70.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | $ 195,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 9,600,000 |  |  |  |  |  |  |  |  |  |  | $ 0 |  | $ 0 |  | $ 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 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.
[3] | 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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