Consolidated Statements Of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
OPERATING ACTIVITIES
Consolidated net income (loss)	[1]	$ (156,734)	$ 960,257	$ 730,572
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization		2,117,236	2,127,892	2,012,076
Deferred income taxes, investment tax credits, and non-current taxes accrued		(820,350)	596,935	311,789
Asset Write-Offs, Impairments, And Related Charges		2,104,906	123,527	341,537
Gain on sale of asset / business		(154,037)	0	(43,569)
Changes in working capital:
Receivables		38,152	98,493	(180,648)
Fuel inventory		(12,376)	3,524	4,873
Accounts payable		(135,211)	(12,996)	94,436
Prepaid taxes and taxes accrued		81,969	(62,985)	(142,626)
Interest accrued		(11,445)	25,013	(3,667)
Deferred fuel costs		298,725	(70,691)	(4,824)
Other working capital accounts		(113,701)	112,390	(66,330)
Changes in provisions for estimated losses		42,566	301,871	(248,205)
Changes in other regulatory assets		262,317	(1,061,537)	1,105,622
Changes in other regulatory liabilities		61,241	87,654	397,341
Changes in pensions and other postretirement liabilities		(446,418)	1,308,166	(1,433,663)
Other		134,344	(647,952)	314,505
Net cash flow provided by operating activities		3,291,184	3,889,561	3,189,219
INVESTING ACTIVITIES
Construction/capital expenditures		(2,500,860)	(2,119,191)	(2,287,593)
Allowance for equity funds used during construction		53,635	68,375	69,689
Nuclear fuel purchases		(493,604)	(537,548)	(517,825)
Payment for purchase of plant		0	0	(17,300)
Proceeds from sale of assets and businesses		487,406	10,100	147,922
NYPA value sharing payment		(70,790)	(72,000)	(71,736)
Payments To Storm Reserve Escrow Account		(69,163)	(276,057)	(7,716)
Receipts from storm reserve escrow account		5,916	0	260,279
Changes in securitization account		(5,806)	1,511	155
Decrease (increase) in other investments		571	46,983	(82,955)
Litigation proceeds for reimbursement of spent nuclear fuel storage costs		18,296	0	21,034
Proceeds from nuclear decommissioning trust fund sales		2,492,176	1,872,115	2,031,552
Investment in nuclear decommissioning trust funds		(2,550,958)	(1,989,446)	(2,147,099)
Proceeds from insurance		24,399	40,670	0
Net cash flow used in investing activities		(2,608,782)	(2,954,488)	(2,601,593)
Proceeds from the issuance of:
Long-term debt		3,502,189	3,100,069	3,746,016
Preferred stock of subsidiary		107,426	0	24,249
Common stock and treasury stock		24,366	194,866	24,527
Retirement of long-term debt		(3,461,518)	(2,323,313)	(3,814,666)
Repurchase of common stock		(99,807)	(183,271)	0
Payments for Repurchase of Preferred Stock and Preference Stock		(94,285)	0	0
Changes in credit borrowings and commercial paper - net		(104,047)	(448,475)	250,889
Dividends paid:
Common stock		(598,897)	(596,117)	(593,037)
Preferred stock		(19,758)	(19,511)	(18,802)
Other		(9,136)	23,579	0
Net cash flow used in financing activities		(753,467)	(252,173)	(380,824)
Effect of exchange rates on cash and cash equivalents		0	0	(245)
Net increase (decrease) in cash and cash equivalents		(71,065)	682,900	206,557
Cash and cash equivalents at beginning of period		1,422,026	739,126	532,569
Cash and cash equivalents at end of period		1,350,961	1,422,026	739,126
Cash paid during the period for:
Interest - net of amount capitalized		663,630	611,376	570,212
Income taxes		103,589	77,799	127,735
Entergy Arkansas [Member]
OPERATING ACTIVITIES
Consolidated net income (loss)		74,272	121,392	161,948
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization		400,156	387,945	357,639
Deferred income taxes, investment tax credits, and non-current taxes accrued		(4,330)	130,132	130,707
Changes in working capital:
Receivables		20,813	25,661	(26,320)
Fuel inventory		(11,791)	(9,394)	7,471
Accounts payable		(2,528)	(120,097)	141,041
Prepaid taxes and taxes accrued		(54,531)	14,261	(204,990)
Interest accrued		(367)	(1,786)	(6,382)
Deferred fuel costs		151,332	(140,483)	28,609
Other working capital accounts		(44,784)	72,411	(34,909)
Changes in provisions for estimated losses		(137)	(57)	(76)
Changes in other regulatory assets		60,279	(367,234)	214,131
Changes in pensions and other postretirement liabilities		(110,936)	252,639	(295,435)
Other		(2,558)	38,436	(72,184)
Net cash flow provided by operating activities		474,890	403,826	401,250
INVESTING ACTIVITIES
Construction/capital expenditures		(624,546)	(535,464)	(489,079)
Allowance for equity funds used during construction		15,882	10,789	14,550
Nuclear fuel purchases		(132,252)	(195,092)	(88,637)
Proceeds from sale of nuclear fuel		52,281	75,860	36,478
Changes in securitization account		(108)	(261)	568
Litigation proceeds for reimbursement of spent nuclear fuel storage costs		0	0	10,271
Increase (Decrease) Cash Collateral from Counterparties		0	0	9,000
Proceeds from nuclear decommissioning trust fund sales		212,954	181,489	266,391
Investment in nuclear decommissioning trust funds		(223,357)	(190,062)	(274,519)
Change in money pool receivable - net		2,218	15,313	(9,496)
Proceeds from insurance		11,654	36,600	0
Other		0	200	0
Net cash flow used in investing activities		(685,274)	(600,628)	(524,473)
Proceeds from the issuance of:
Long-term debt		0	707,465	716,595
Retirement of long-term debt		(13,234)	(447,815)	(442,302)
Change in money pool payable - net		52,742	0	0
Changes in credit borrowings and commercial paper - net		(36,278)	47,968	(36,735)
Dividends paid:
Common stock		0	(10,000)	(15,000)
Preferred stock		(6,873)	(6,873)	(6,873)
Other		4,657	(2,460)	27
Net cash flow used in financing activities		1,014	288,285	215,712
Net increase (decrease) in cash and cash equivalents		(209,370)	91,483	92,489
Cash and cash equivalents at beginning of period		218,505	127,022	34,533
Cash and cash equivalents at end of period		9,135	218,505	127,022
Cash paid during the period for:
Interest - net of amount capitalized		100,435	90,285	92,353
Income taxes		103,296	(48,948)	184,592
Entergy Louisiana [Member]
OPERATING ACTIVITIES
Consolidated net income (loss)		446,639	446,022	414,126
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization		593,635	580,742	560,753
Deferred income taxes, investment tax credits, and non-current taxes accrued		97,461	248,686	397,089
Changes in working capital:
Receivables		(12,795)	101,965	(175,682)
Fuel inventory		(887)	2,708	684
Accounts payable		23,641	(28,422)	(11,454)
Prepaid taxes and taxes accrued		105,687	183,313	(219,595)
Interest accrued		2,933	3,567	5,179
Deferred fuel costs		4,222	40,245	46,387
Other working capital accounts		(41,890)	17,761	36,259
Changes in provisions for estimated losses		(8,946)	274,349	(248,825)
Changes in other regulatory assets		130,762	(314,837)	234,303
Changes in other regulatory liabilities		96,234	29,713	212,431
Changes in pensions and other postretirement liabilities		(98,695)	299,319	(321,244)
Other		(182,485)	(166,540)	167,087
Net cash flow provided by operating activities		1,155,516	1,718,591	1,097,498
INVESTING ACTIVITIES
Construction/capital expenditures		(845,227)	(757,376)	(978,592)
Allowance for equity funds used during construction		19,192	46,240	39,606
Nuclear fuel purchases		(244,040)	(172,297)	(192,192)
Proceeds from sale of nuclear fuel		54,595	126,004	42,839
Proceeds from sale of assets and businesses		59,610	0	0
Investment in affiliates		0	(293,516)	0
Payments To Storm Reserve Escrow Account		(308)	(268,576)	(29)
Receipts from storm reserve escrow account		0	0	252,483
Changes in securitization account		(137)	1,480	(157)
Proceeds from nuclear decommissioning trust fund sales		123,474	216,688	303,648
Investment in nuclear decommissioning trust funds		(158,028)	(245,446)	(334,895)
Change in money pool receivable - net		(3,339)	16,758	(10,140)
Other		0	0	(22)
Net cash flow used in investing activities		(994,208)	(1,330,041)	(877,451)
Proceeds from the issuance of:
Long-term debt		77,172	751,565	487,510
Retirement of long-term debt		(180,595)	(512,180)	(105,846)
Payments for Repurchase of Preferred Stock and Preference Stock		110,000
Payments for Repurchase of Preferred Stock and Related Expense		(110,286)	0	0
Change in money pool payable - net		0	0	(7,074)
Changes in credit borrowings and commercial paper - net		14,322	28,310	(36,934)
Dividends paid:
Common stock		(226,000)	(487,502)	(476,154)
Preferred stock		(6,082)	(7,775)	(7,775)
Other		(15,253)	19,960	42
Net cash flow used in financing activities		(446,722)	(207,622)	(146,231)
Net increase (decrease) in cash and cash equivalents		(285,414)	180,928	73,816
Cash and cash equivalents at beginning of period		320,516	139,588	65,772
Cash and cash equivalents at end of period		35,102	320,516	139,588
Cash paid during the period for:
Interest - net of amount capitalized		243,745	241,436	221,139
Income taxes		89,124	(242,420)	(28,558)
Noncash Capital Contribution from Parent		(267,826)	0	0
Entergy Mississippi [Member]
OPERATING ACTIVITIES
Consolidated net income (loss)		92,708	74,821	82,159
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization		129,029	113,903	108,714
Deferred income taxes, investment tax credits, and non-current taxes accrued		18,673	32,472	47,878
Changes in working capital:
Receivables		50,199	(27,444)	(31,647)
Fuel inventory		(8,537)	6,163	(121)
Accounts payable		(26,682)	(14,618)	38,727
Prepaid taxes and taxes accrued		(10,104)	318	920
Interest accrued		(2,341)	2,789	2,157
Deferred fuel costs		105,560	40,251	(11,567)
Other working capital accounts		(663)	17,567	(12,820)
Changes in provisions for estimated losses		(2,080)	14,468	(146)
Changes in other regulatory assets		39,582	(36,875)	87,907
Changes in pensions and other postretirement liabilities		(14,939)	68,434	(94,143)
Other		1,874	11,214	1,647
Net cash flow provided by operating activities		372,279	303,463	219,665
INVESTING ACTIVITIES
Construction/capital expenditures		(235,894)	(179,544)	(168,510)
Allowance for equity funds used during construction		3,095	2,380	2,182
Change in money pool receivable - net		(25,286)	(644)	16,878
Proceeds from insurance		12,932	0	0
Other		26	43	40
Net cash flow used in investing activities		(245,127)	(177,765)	(149,410)
Proceeds from the issuance of:
Long-term debt		0	98,668	0
Retirement of long-term debt		0	(95,000)	(116,030)
Change in money pool payable - net		0	(3,536)	3,536
Dividends paid:
Common stock		(40,000)	(61,400)	(7,400)
Preferred stock		(2,828)	(2,828)	(2,828)
Other		(352)	0	(472)
Net cash flow used in financing activities		(43,180)	(64,096)	(123,194)
Net increase (decrease) in cash and cash equivalents		83,972	61,602	(52,939)
Cash and cash equivalents at beginning of period		61,633	31	52,970
Cash and cash equivalents at end of period		145,605	61,633	31
Cash paid during the period for:
Interest - net of amount capitalized		57,576	51,509	54,120
Income taxes		61,333	19,650	4,657
Entergy New Orleans [Member]
OPERATING ACTIVITIES
Consolidated net income (loss)		44,925	31,030	12,608
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization		43,205	45,426	43,990
Deferred income taxes, investment tax credits, and non-current taxes accrued		22,180	24,380	(7,439)
Changes in working capital:
Receivables		7,878	21,098	(8,215)
Fuel inventory		1,104	(17)	(1,222)
Accounts payable		2,738	(7,702)	5,987
Interest accrued		1,270	(63)	581
Deferred fuel costs		(182)	5,409	22,622
Other working capital accounts		(2,995)	(18,030)	3,194
Changes in provisions for estimated losses		58,310	10,877	(31)
Changes in other regulatory assets		(70,471)	(41,517)	62,586
Changes in pensions and other postretirement liabilities		(18,831)	29,942	(51,293)
Other		15,937	(11,900)	9,182
Net cash flow provided by operating activities		105,068	88,933	92,550
INVESTING ACTIVITIES
Construction/capital expenditures		(91,928)	(70,903)	(95,766)
Allowance for equity funds used during construction		1,404	1,750	1,598
Payments To Storm Reserve Escrow Account		(68,886)	(7,525)	(7,663)
Receipts from storm reserve escrow account		5,922	0	7,755
Changes in securitization account		(4,620)	0	0
Change in money pool receivable - net		(15,352)	4,295	(1,814)
Net cash flow used in investing activities		(173,460)	(72,383)	(95,890)
Proceeds from the issuance of:
Long-term debt		95,367	0	98,471
Retirement of long-term debt		0	0	(70,068)
Repayment of long-term payable due to Entergy Louisiana		(59,610)	0	0
Proceeds from Contributions from Parent		87,500	0	0
Dividends paid:
Common stock		(7,250)	(6,000)	0
Preferred stock		(965)	(965)	(965)
Other		(163)	(685)	0
Net cash flow used in financing activities		114,879	(7,650)	27,438
Net increase (decrease) in cash and cash equivalents		46,487	8,900	24,098
Cash and cash equivalents at beginning of period		42,389	33,489	9,391
Cash and cash equivalents at end of period		88,876	42,389	33,489
Cash paid during the period for:
Interest - net of amount capitalized		14,951	15,877	15,153
Income taxes		8,110	4,871	(1,448)
Entergy Texas [Member]
OPERATING ACTIVITIES
Consolidated net income (loss)		69,625	74,804	57,881
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization		102,410	99,609	94,744
Deferred income taxes, investment tax credits, and non-current taxes accrued		(23,292)	2,829	86,152
Changes in working capital:
Receivables		21,443	24,318	(49,252)
Fuel inventory		2,960	5,433	53
Accounts payable		(16,913)	(19,854)	29,718
Prepaid taxes and taxes accrued		3,484	57,484	(1,967)
Interest accrued		(551)	(1,489)	(920)
Deferred fuel costs		36,985	(15,954)	(89,241)
Other working capital accounts		2,468	9,045	6,918
Changes in provisions for estimated losses		(2,899)	3,139	2,470
Changes in other regulatory assets		125,133	2,809	197,520
Changes in pensions and other postretirement liabilities		(33,474)	59,725	(104,055)
Other		(3,111)	13,266	7,033
Net cash flow provided by operating activities		284,268	315,164	237,054
INVESTING ACTIVITIES
Construction/capital expenditures		(320,408)	(195,794)	(181,546)
Allowance for equity funds used during construction		5,751	2,981	4,647
Changes in securitization account		(942)	292	(256)
Change in money pool receivable - net		306	5,981	12,888
Other		0	0	(42)
Net cash flow used in investing activities		(315,293)	(186,540)	(164,309)
Proceeds from the issuance of:
Long-term debt		246,607	131,163	0
Retirement of long-term debt		(265,734)	(213,450)	(61,316)
Change in money pool payable - net		22,068	0	0
Dividends paid:
Common stock		0	(70,000)	(25,000)
Other		(175)	7,616	(177)
Net cash flow used in financing activities		2,766	(144,671)	(86,493)
Net increase (decrease) in cash and cash equivalents		(28,259)	(16,047)	(13,748)
Cash and cash equivalents at beginning of period		30,441	46,488	60,236
Cash and cash equivalents at end of period		2,182	30,441	46,488
Cash paid during the period for:
Interest - net of amount capitalized		83,290	85,695	89,021
Income taxes		60,359	(2,653)	(57,473)
System Energy [Member]
OPERATING ACTIVITIES
Consolidated net income (loss)		111,318	96,334	113,664
Adjustments to reconcile net income to net cash flow provided by operating activities:
Depreciation, amortization, and decommissioning, including nuclear fuel amortization		270,514	254,199	293,537
Deferred income taxes, investment tax credits, and non-current taxes accrued		200,797	79,835	29,996
Changes in working capital:
Receivables		5,879	37,345	(29,226)
Accounts payable		(352)	(6,372)	6,685
Prepaid taxes and taxes accrued		(32,594)	12,146	(170,356)
Interest accrued		(19,013)	21,371	(3,794)
Other working capital accounts		13,576	(11,688)	24,863
Changes in other regulatory assets		(4,565)	(64,262)	79,345
Changes in pensions and other postretirement liabilities		(16,888)	49,741	(63,206)
Other		(26,136)	(40,384)	(1,870)
Net cash flow provided by operating activities		502,536	428,265	279,638
INVESTING ACTIVITIES
Construction/capital expenditures		(70,358)	(63,774)	(51,584)
Allowance for equity funds used during construction		8,494	5,069	7,784
Nuclear fuel purchases		(64,977)	(181,209)	(65,691)
Proceeds from sale of nuclear fuel		57,681	61,076	26,522
Proceeds from nuclear decommissioning trust fund sales		390,371	392,872	215,467
Investment in nuclear decommissioning trust funds		(421,220)	(424,814)	(247,042)
Change in money pool receivable - net		(37,553)	6,850	17,692
Net cash flow used in investing activities		(137,562)	(203,930)	(96,852)
Proceeds from the issuance of:
Long-term debt		0	0	85,000
Retirement of long-term debt		(136,310)	(46,743)	(111,479)
Changes in credit borrowings and commercial paper - net		(20,404)	20,404	(39,986)
Dividends paid:
Common stock		(200,750)	(101,930)	(70,286)
Other		(28)	(29)	(2,515)
Net cash flow used in financing activities		(357,492)	(128,298)	(139,266)
Net increase (decrease) in cash and cash equivalents		7,482	96,037	43,520
Cash and cash equivalents at beginning of period		223,179	127,142	83,622
Cash and cash equivalents at end of period		230,661	223,179	127,142
Cash paid during the period for:
Interest - net of amount capitalized		47,864	27,834	32,178
Income taxes		$ (114,092)	$ (10,065)	$ 211,210

[1] (a) Consolidated net income and preferred dividend requirements of subsidiaries for 2015, 2014, and 2013 include $14.9 million, $12.9 million, and $12 million, respectively, of preferred dividends on subsidiaries’ preferred stock without sinking fund that is not presented as equity.