Consolidated Statements Of Income - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
OPERATING REVENUES        
Electric $ 2,624,562 $ 2,825,143 $ 6,760,054 $ 7,289,280
Natural gas 24,796 24,517 95,530 111,805
Competitive businesses 475,345 521,746 1,341,534 1,603,643
TOTAL 3,124,703 3,371,406 8,197,118 9,004,728
Operation and Maintenance:        
Fuel, fuel-related expenses, and gas purchased for resale 460,990 739,449 1,347,422 1,919,605
Purchased power 375,107 449,784 880,102 1,114,736
Nuclear refueling outage expenses 56,675 68,577 154,951 200,575
Other operation and maintenance 833,176 852,385 2,324,350 2,450,368
Asset Write-Offs, Impairments, And Related Charges 18,841 1,642,204 33,170 1,642,204
Decommissioning 85,266 68,888 230,519 207,617
Taxes other than income taxes 149,076 158,134 448,103 472,035
Depreciation and amortization 340,399 334,841 1,010,339 1,007,181
Other regulatory charges (credits) - net 33,113 22,160 55,626 35,271
TOTAL 2,352,643 4,336,422 6,484,582 9,049,592
OPERATING INCOME (LOSS) 772,060 (965,016) 1,712,536 (44,864)
OTHER INCOME        
Allowance for equity funds used during construction 15,451 14,129 48,242 37,841
Investment Income, Net 37,534 39,054 116,662 146,893
Miscellaneous - net (6,740) (10,005) (25,702) (34,769)
TOTAL 46,245 43,178 139,202 149,965
INTEREST EXPENSE        
Interest expense 174,902 171,349 526,344 503,546
Allowance for borrowed funds used during construction (7,707) (7,289) (24,520) (19,450)
TOTAL 167,195 164,060 501,824 484,096
INCOME (LOSS) BEFORE INCOME TAXES 651,110 (1,085,898) 1,349,914 (378,995)
Income taxes 257,906 (367,665) 148,879 (117,412)
CONSOLIDATED NET INCOME (LOSS) 393,204 (718,233) 1,201,035 [1] (261,583) [1]
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders 5,034 4,794 15,586 14,552
EARNINGS APPLICABLE TO COMMON STOCK $ 388,170 $ (723,027) $ 1,185,449 $ (276,135)
Earnings (loss) per average common share:        
Basic (in dollars per share) $ 2.17 $ (4.04) $ 6.63 $ (1.54)
Diluted (in dollars per share) 2.16 (4.04) 6.60 (1.54)
Dividends declared per common share (in dollars per share) $ 0.85 $ 0.83 $ 2.55 $ 2.49
Basic average number of common shares outstanding (in shares) 179,023,351 179,151,832 178,804,148 179,442,172
Diluted average number of common shares outstanding (in shares) 179,990,888 179,151,832 179,490,060 179,442,172
Entergy Arkansas [Member]        
OPERATING REVENUES        
Electric $ 654,599 $ 714,353 $ 1,624,224 $ 1,777,415
Operation and Maintenance:        
Fuel, fuel-related expenses, and gas purchased for resale 105,147 176,164 274,106 426,351
Purchased power 52,023 105,321 163,541 285,806
Nuclear refueling outage expenses 14,554 13,603 44,604 39,109
Other operation and maintenance 187,294 214,536 514,109 544,446
Decommissioning 13,504 12,713 39,908 37,508
Taxes other than income taxes 24,931 28,905 70,978 77,589
Depreciation and amortization 67,309 61,527 197,597 183,169
Other regulatory charges (credits) - net 1,177 (7,652) 2,896 (17,604)
TOTAL 465,939 605,117 1,307,739 1,576,374
OPERATING INCOME (LOSS) 188,660 109,236 316,485 201,041
OTHER INCOME        
Allowance for equity funds used during construction 3,734 3,950 12,661 9,856
Investment Income, Net 5,410 4,541 14,774 18,354
Miscellaneous - net 812 (1,036) (983) (1,724)
TOTAL 9,956 7,455 26,452 26,486
INTEREST EXPENSE        
Interest expense 28,152 26,360 88,726 79,264
Allowance for borrowed funds used during construction (2,000) (2,246) (6,851) (5,321)
TOTAL 26,152 24,114 81,875 73,943
INCOME (LOSS) BEFORE INCOME TAXES 172,464 92,577 261,062 153,584
Income taxes 62,316 36,915 97,729 58,532
CONSOLIDATED NET INCOME (LOSS) 110,148 55,662 163,333 95,052
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders 1,476 1,718 4,913 5,155
EARNINGS APPLICABLE TO COMMON STOCK 108,672 53,944 158,420 89,897
Entergy Louisiana [Member]        
OPERATING REVENUES        
Electric 1,240,217 1,289,642 3,166,380 3,398,781
Natural gas 9,235 8,840 37,251 43,491
TOTAL 1,249,452 1,298,482 3,203,631 3,442,272
Operation and Maintenance:        
Fuel, fuel-related expenses, and gas purchased for resale 261,979 250,482 616,402 647,131
Purchased power 261,212 341,198 677,309 901,957
Nuclear refueling outage expenses 12,894 11,248 38,648 34,187
Other operation and maintenance 229,717 231,333 668,738 700,411
Decommissioning 11,812 10,936 34,978 32,365
Taxes other than income taxes 38,129 44,143 124,857 128,204
Depreciation and amortization 114,251 109,562 336,294 327,188
Other regulatory charges (credits) - net 6,507 5,144 18,084 (451)
TOTAL 936,501 1,004,046 2,515,310 2,770,992
OPERATING INCOME (LOSS) 312,951 294,436 688,321 671,280
OTHER INCOME        
Allowance for equity funds used during construction 6,735 5,499 18,479 15,194
Investment Income, Net 38,731 37,632 116,398 112,429
Miscellaneous - net (4,429) (2,976) (10,044) (7,764)
TOTAL 41,037 40,155 124,833 119,859
INTEREST EXPENSE        
Interest expense 68,396 64,417 204,259 194,701
Allowance for borrowed funds used during construction (3,455) (3,034) (9,735) (8,527)
TOTAL 64,941 61,383 194,524 186,174
INCOME (LOSS) BEFORE INCOME TAXES 289,047 273,208 618,630 604,965
Income taxes 99,541 86,068 64,193 182,735
CONSOLIDATED NET INCOME (LOSS) 189,506 187,140 554,437 422,230
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders 0 1,850 0 5,737
EARNINGS APPLICABLE TO COMMON STOCK 189,506 185,290 554,437 416,493
Entergy Mississippi [Member]        
OPERATING REVENUES        
Electric 309,739 410,743 820,923 1,116,533
Operation and Maintenance:        
Fuel, fuel-related expenses, and gas purchased for resale 3,444 89,512 64,790 244,331
Purchased power 87,070 120,697 216,814 308,618
Other operation and maintenance 67,155 60,504 178,809 190,690
Taxes other than income taxes 24,837 24,082 68,821 72,219
Depreciation and amortization 34,438 32,459 101,746 95,888
Other regulatory charges (credits) - net 4,483 9,225 (1,832) 17,598
TOTAL 221,427 336,479 629,148 929,344
OPERATING INCOME (LOSS) 88,312 74,264 191,775 187,189
OTHER INCOME        
Allowance for equity funds used during construction 1,441 713 4,072 2,094
Investment Income, Net 129 50 490 105
Miscellaneous - net (849) (743) (2,604) (2,675)
TOTAL 721 20 1,958 (476)
INTEREST EXPENSE        
Interest expense 13,866 14,527 43,866 43,164
Allowance for borrowed funds used during construction (741) (376) (2,099) (1,117)
TOTAL 13,125 14,151 41,767 42,047
INCOME (LOSS) BEFORE INCOME TAXES 75,908 60,133 151,966 144,666
Income taxes 29,296 23,557 56,042 56,876
CONSOLIDATED NET INCOME (LOSS) 46,612 36,576 95,924 87,790
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders 707 707 2,121 2,121
EARNINGS APPLICABLE TO COMMON STOCK 45,905 35,869 93,803 85,669
Entergy New Orleans [Member]        
OPERATING REVENUES        
Electric 185,775 194,056 457,317 458,796
Natural gas 15,561 15,677 58,279 68,314
TOTAL 201,336 209,733 515,596 527,110
Operation and Maintenance:        
Fuel, fuel-related expenses, and gas purchased for resale 19,231 44,085 42,706 81,807
Purchased power 82,581 75,107 221,689 209,626
Other operation and maintenance 27,251 29,792 78,752 89,872
Taxes other than income taxes 13,409 13,134 35,846 36,302
Depreciation and amortization 13,047 10,929 38,719 32,529
Other regulatory charges (credits) - net 3,538 1,952 6,812 1,340
TOTAL 159,057 174,999 424,524 451,476
OPERATING INCOME (LOSS) 42,279 34,734 91,072 75,634
OTHER INCOME        
Allowance for equity funds used during construction 311 389 767 1,022
Investment Income, Net 58 15 157 53
Miscellaneous - net (92) (81) (144) 532
TOTAL 277 323 780 1,607
INTEREST EXPENSE        
Interest expense 5,373 4,480 15,730 13,086
Allowance for borrowed funds used during construction (116) (177) (291) (471)
TOTAL 5,257 4,303 15,439 12,615
INCOME (LOSS) BEFORE INCOME TAXES 37,299 30,754 76,413 64,626
Income taxes 13,598 11,591 29,701 23,275
CONSOLIDATED NET INCOME (LOSS) 23,701 19,163 46,712 41,351
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders 241 241 724 724
EARNINGS APPLICABLE TO COMMON STOCK 23,460 18,922 45,988 40,627
Entergy Texas [Member]        
OPERATING REVENUES        
Electric 442,085 498,249 1,233,311 1,312,381
Operation and Maintenance:        
Fuel, fuel-related expenses, and gas purchased for resale 21,919 72,850 185,801 197,017
Purchased power 189,213 202,864 486,696 557,912
Other operation and maintenance 50,536 65,253 157,706 187,840
Taxes other than income taxes 17,486 18,644 54,081 54,555
Depreciation and amortization 27,412 25,795 79,526 76,356
Other regulatory charges (credits) - net 27,555 26,219 62,229 64,000
TOTAL 334,121 411,625 1,026,039 1,137,680
OPERATING INCOME (LOSS) 107,964 86,624 207,272 174,701
OTHER INCOME        
Allowance for equity funds used during construction 1,472 1,371 6,174 3,912
Investment Income, Net 221 (5) 689 (411)
Miscellaneous - net (256) (133) (726) (247)
TOTAL 1,437 1,233 6,137 3,254
INTEREST EXPENSE        
Interest expense 22,416 21,917 65,993 64,475
Allowance for borrowed funds used during construction (954) (886) (4,008) (2,542)
TOTAL 21,462 21,031 61,985 61,933
INCOME (LOSS) BEFORE INCOME TAXES 87,939 66,826 151,424 116,022
Income taxes 31,806 23,512 56,671 41,227
CONSOLIDATED NET INCOME (LOSS) 56,133 43,314 94,753 74,795
System Energy [Member]        
OPERATING REVENUES        
Electric 114,039 155,899 403,056 475,039
Operation and Maintenance:        
Fuel, fuel-related expenses, and gas purchased for resale (7,393) 22,984 26,429 66,400
Nuclear refueling outage expenses 4,958 5,244 14,448 16,346
Other operation and maintenance 32,867 39,520 100,793 116,309
Decommissioning 12,802 12,095 37,782 35,695
Taxes other than income taxes 6,256 6,497 18,894 20,263
Depreciation and amortization 30,811 35,091 100,902 109,398
Other regulatory charges (credits) - net (10,148) (12,667) (32,564) (29,761)
TOTAL 70,153 108,764 266,684 334,650
OPERATING INCOME (LOSS) 43,886 47,135 136,372 140,389
OTHER INCOME        
Allowance for equity funds used during construction 1,758 2,252 6,089 5,945
Investment Income, Net 4,233 4,732 12,631 12,195
Miscellaneous - net (109) (129) (365) (567)
TOTAL 5,882 6,855 18,355 17,573
INTEREST EXPENSE        
Interest expense 9,186 10,404 28,119 35,764
Allowance for borrowed funds used during construction (440) (595) (1,536) (1,571)
TOTAL 8,746 9,809 26,583 34,193
INCOME (LOSS) BEFORE INCOME TAXES 41,022 44,181 128,144 123,769
Income taxes 18,652 18,958 54,726 51,153
CONSOLIDATED NET INCOME (LOSS) $ 22,370 $ 25,223 $ 73,418 $ 72,616
[1] (a) Consolidated net income and preferred dividend requirements of subsidiaries for 2016 and 2015 include $15.6 million and $9.6 million, respectively, of preferred dividends on subsidiaries’ preferred stock without sinking fund that is not presented within equity.