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Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Narrative) (Details) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Qualified Pension Plans [Member]
plan
Dec. 31, 2012
Qualified Pension Plans [Member]
Dec. 31, 2011
Qualified Pension Plans [Member]
Dec. 31, 2013
Qualified Pension Obligations [Member]
Dec. 31, 2012
Qualified Pension Obligations [Member]
Dec. 31, 2011
Qualified Pension Obligations [Member]
Dec. 31, 2013
Other Postretirement Benefits [Member]
Dec. 31, 2012
Other Postretirement Benefits [Member]
Jan. 01, 1993
Other Postretirement Benefits [Member]
Dec. 31, 2013
Non-Qualified Pension Plans [Member]
Dec. 31, 2012
Non-Qualified Pension Plans [Member]
Dec. 31, 2011
Non-Qualified Pension Plans [Member]
Dec. 31, 2013
Defined Contribution Plans [Member]
Dec. 31, 2012
Defined Contribution Plans [Member]
Dec. 31, 2011
Defined Contribution Plans [Member]
Dec. 31, 2013
Entergy Arkansas [Member]
Dec. 31, 2012
Entergy Arkansas [Member]
Dec. 31, 2013
Entergy Arkansas [Member]
Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Arkansas [Member]
Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Arkansas [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Arkansas [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2012
Entergy Arkansas [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2011
Entergy Arkansas [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2013
Entergy Arkansas [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Arkansas [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Arkansas [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Gulf States Louisiana [Member]
Dec. 31, 2012
Entergy Gulf States Louisiana [Member]
Dec. 31, 2013
Entergy Gulf States Louisiana [Member]
Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Gulf States Louisiana [Member]
Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Gulf States Louisiana [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Gulf States Louisiana [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2012
Entergy Gulf States Louisiana [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2011
Entergy Gulf States Louisiana [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2013
Entergy Gulf States Louisiana [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Gulf States Louisiana [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Gulf States Louisiana [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Louisiana [Member]
Dec. 31, 2012
Entergy Louisiana [Member]
Dec. 31, 2013
Entergy Louisiana [Member]
Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Louisiana [Member]
Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Louisiana [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Louisiana [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2012
Entergy Louisiana [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2011
Entergy Louisiana [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2013
Entergy Louisiana [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Louisiana [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Louisiana [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Mississippi [Member]
Dec. 31, 2012
Entergy Mississippi [Member]
Dec. 31, 2013
Entergy Mississippi [Member]
Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Mississippi [Member]
Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Mississippi [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Mississippi [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2012
Entergy Mississippi [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2011
Entergy Mississippi [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2013
Entergy Mississippi [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Mississippi [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Mississippi [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy New Orleans [Member]
Dec. 31, 2012
Entergy New Orleans [Member]
Dec. 31, 2013
Entergy New Orleans [Member]
Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy New Orleans [Member]
Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy New Orleans [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy New Orleans [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2012
Entergy New Orleans [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2011
Entergy New Orleans [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2013
Entergy New Orleans [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy New Orleans [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy New Orleans [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Texas [Member]
Dec. 31, 2012
Entergy Texas [Member]
Dec. 31, 2013
Entergy Texas [Member]
Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Texas [Member]
Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Texas [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Entergy Texas [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2012
Entergy Texas [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2011
Entergy Texas [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2013
Entergy Texas [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2012
Entergy Texas [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2011
Entergy Texas [Member]
Non-Qualified Pension Plans [Member]
Dec. 31, 2013
System Energy [Member]
Dec. 31, 2012
System Energy [Member]
Dec. 31, 2013
System Energy [Member]
Qualified Pension Plans [Member]
Dec. 31, 2012
System Energy [Member]
Qualified Pension Plans [Member]
Dec. 31, 2011
System Energy [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
System Energy [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2012
System Energy [Member]
Qualified Pension Obligations [Member]
Dec. 31, 2011
System Energy [Member]
Qualified Pension Obligations [Member]
Jan. 01, 1993
Entergy Gulf States [Member]
Other Postretirement Benefits [Member]
Dec. 31, 2013
Pre-65 Retirees [Member]
Other Postretirement Benefits [Member]
Dec. 31, 2013
Pre-65 Retirees [Member]
Accumulated Pension Benefit Obligation [Member]
Dec. 31, 2013
Post-65 Retirees [Member]
Other Postretirement Benefits [Member]
Dec. 31, 2013
Post-65 Retirees [Member]
Accumulated Pension Benefit Obligation [Member]
Dec. 31, 2013
Minimum [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Maximum [Member]
Qualified Pension Plans [Member]
Dec. 31, 2013
Domestic Equity Securities [Member]
Non-Taxables [Member]
Dec. 31, 2013
Domestic Equity Securities [Member]
Taxable [Member]
Dec. 31, 2013
Domestic Equity Securities [Member]
Qualified Pension And Other Postretirement Plans [Member]
Dec. 31, 2013
International Equity Securities [Member]
Non-Taxables [Member]
Dec. 31, 2013
International Equity Securities [Member]
Taxable [Member]
Dec. 31, 2013
International Equity Securities [Member]
Qualified Pension And Other Postretirement Plans [Member]
Dec. 31, 2013
Fixed Income Securities [Member]
Non-Taxables [Member]
Dec. 31, 2013
Fixed Income Securities [Member]
Taxable [Member]
Dec. 31, 2013
Fixed Income Securities [Member]
Qualified Pension And Other Postretirement Plans [Member]
Change in Plan Assets                                                                                                                                                                                                                        
Number of qualified pension plans       7                                                                                                                                                                                                                
Mandatory employee contribution under Retirement Plan III       3.00%                                                                                                                                                                                                                
Mandatory contribution plan participation period 10 years                                                                                                                                                                                                                      
Voluntary employee contributions under Retirement Plan III                                                                                                                                                                                                   1.00% 10.00%                  
Accumulated pension benefit obligation       $ 5,200,000,000 $ 5,400,000,000             $ 241,400,000 $ 131,400,000 $ 180,600,000             $ 1,107,023,000 $ 1,161,448,000         $ 3,765,000 $ 3,856,000       $ 530,974,000 $ 559,190,000         $ 2,510,000 $ 2,899,000       $ 697,945,000 $ 735,376,000         $ 50,000 $ 116,000       $ 318,941,000 $ 336,099,000         $ 1,528,000 $ 1,590,000       $ 150,239,000 $ 157,233,000         $ 387,000 $ 427,000       $ 332,484,000 $ 350,351,000         $ 7,496,000 $ 9,127,000       $ 247,807,000 $ 251,378,000         $ 128,000,000                              
Period of amortization of accumulated postretirement benefit obligations                   20 years                                                                                                                                                                                                    
Period of amortization of regulatory asset                     15 years                                                                                                                                                                                                  
Net periodic benefit costs       352,125,000 264,281,000 154,004,000             54,500,000 26,500,000 24,000,000           69,013,000 53,064,000 33,743,000       448,000 464,000 498,000     31,013,000 19,774,000 9,400,000       151,000 158,000 167,000     49,316,000 37,445,000 23,583,000       12,000 12,000 14,000     16,283,000 12,306,000 7,662,000       192,000 183,000 190,000     10,413,000 8,457,000 5,538,000       92,000 79,000 65,000     16,223,000 10,376,000 4,398,000       1,001,000 648,000 763,000     13,702,000 11,485,000 6,861,000                                      
Settlement charges related to the payment of lump sum benefits out of the plan                         33,000,000 6,300,000 4,600,000                                                                                                                                                                                          
Projected benefit obligation             5,770,999,000 6,096,639,000 5,187,635,000       154,300,000 199,300,000                   1,192,640,000 1,274,886,000 1,116,572,000 4,162,000 4,323,000             579,862,000 623,068,000 512,432,000 2,511,000 2,909,000             761,350,000 817,745,000 704,748,000 50,000 116,000             345,824,000 369,852,000 326,377,000 1,752,000 1,841,000             163,707,000 174,585,000 151,966,000 434,000 457,000             356,080,000 382,176,000 337,669,000 7,910,000 9,732,000             270,789,000 282,841,000 258,268,000                                
non-current pension liability 2,320,704,000 3,725,886,000         1,341,762,000 2,263,779,000         127,500,000 137,200,000         319,211,000 614,805,000       296,345,000 489,359,000   3,795,000 4,114,000   274,315,000 416,220,000       110,567,000 213,097,000   2,249,000 2,652,000   358,017,000 539,703,000       199,458,000 328,718,000   44,000 99,000   66,722,000 160,866,000       63,987,000 121,580,000   1,634,000 1,723,000   32,497,000 83,790,000       40,747,000 67,807,000   414,000 432,000   51,253,000 155,241,000       60,329,000 120,066,000   7,124,000 8,879,000   79,411,000 142,617,000       74,461,000 114,144,000                                  
Current pension liability 67,419,000 95,900,000                     26,800,000 62,100,000                         367,000 209,000   9,065,000 7,803,000             262,000 257,000   10,255,000 9,170,000             6,000 17,000                   118,000 118,000                   20,000 25,000   786,000 853,000             786,000 853,000                                                  
Amortization of prior cost/(credit)       2,125,000 2,733,000 3,350,000             59,100,000 81,200,000             23,000 200,000 459,000                 9,000 19,000 79,000                 83,000 208,000 280,000                 10,000 30,000 152,000                 2,000 7,000 35,000                 6,000 15,000 65,000                 9,000 13,000 16,000                                      
Accumulated other comprehensive income (before taxes)             385,212,000 642,590,000         26,100,000 32,500,000                   0 0   0 0             25,437,000 42,415,000   57,000 102,000             0 0   0 0             0 0   0 0             0 0   0 0             0 0   0 0             0 0                                  
Settlement charges                                                       38,000 41,000                                                                                                         415,000                                                    
Target asset allocation                                                                                                                                                                                                       39.00% 39.00% 45.00% 26.00% 26.00% 20.00% 35.00% 35.00% 35.00%
Expected contributions in 2013       400,000,000           74,100,000                                                                                                                                                                                                    
Assumed health care cost trend rate for 2013                                                                                                                                                                                           7.50% 7.25% 7.25% 7.00%                      
Ultimate healthcare cost trend rate                                                                                                                                                                                           4.75% 4.75%   4.75%                      
Reduction in accumulated postretirement benefit obligation from actuarially estimated effect of future Medicare subsidies 53,700,000 316,600,000                                                                                                                                                                                                                    
Reduction in other postretirement benefit cost from actuarially estimated effect of future Medicare subsidies 25,400,000 31,200,000 33,000,000                                                                                                                                                                                                                  
Medicare subsidies for prescription drug claims received 3,300,000                                                                                                                                                                                                                      
Employer's contribution to defined contribution plan as percentage of eligible earnings per pay period                               6.00%                                                                                                                                                                                        
Employers contribution to defined contribution plan as percentage of employees contribution                               70.00%                                                                                                                                                                                        
Subsidiaries' contribution to defined contribution plan                               $ 44,500,000 $ 43,700,000 $ 42,600,000