Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total	Subsidiaries Preferred Stock [Member]	Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Common Stock [Member]	Treasury Stock, Common	Entergy Texas [Member]	Entergy Texas [Member] Subsidiaries Preferred Stock [Member]	Entergy Texas [Member] Paid In Capital [Member]	Entergy Texas [Member] Retained Earnings [Member]	Entergy Texas [Member] Common Stock [Member]	Entergy Mississippi [Member]	Entergy Mississippi [Member] Member's Equity [Member]	Entergy Mississippi [Member] Noncontrolling Interest	Entergy Arkansas [Member]	Entergy Arkansas [Member] Member's Equity [Member]	Entergy Arkansas [Member] Noncontrolling Interest	Entergy Louisiana [Member]	Entergy Louisiana [Member] Member's Equity [Member]	Entergy Louisiana [Member] Accumulated Other Comprehensive Income [Member]	Entergy Louisiana [Member] Noncontrolling Interest	Entergy New Orleans [Member]	System Energy [Member]	System Energy [Member] Retained Earnings [Member]	System Energy [Member] Common Stock [Member]	Entergy Corporation [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 11,705,394	$ 68,110	$ 6,766,239	$ 10,240,552	$ (332,528)	$ 2,720	$ (5,039,699)	$ 2,483,206	$ 38,750	$ 1,050,125	$ 1,344,879	$ 49,452	$ 1,839,568	$ 1,839,568	$ 0	$ 3,575,855	$ 3,542,745	$ 33,110	$ 8,180,572	$ 8,172,294	$ 8,278	$ 0	$ 638,715	$ 1,091,360	$ 139,510	$ 951,850
Dividends, Preferred Stock, Cash	4,580	4,580	0	0	0	0	0	518	0	0	518	0															$ 4,000
Consolidated net income	279,593	3,193	0	276,400	0	0	0	50,403	0	0	50,403	0	30,355	30,355	0	65,567	66,954	(1,387)	150,860	150,860	0	0	15,126	31,432	31,432	0
Dividends, Common Stock, Cash	(205,058)	0	0	(205,058)	0	0	0												(125,000)	(125,000)	0	0
Other comprehensive income (loss)	(4,050)	0	0	0	(4,050)	0	0												(613)	0	(613)	0
Common stock issuances related to stock plans	(5,527)	0	31,085	0	0	0	(36,612)
Other																			(13)	(13)	0	0
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	2,794							1,554					(9,117)			(2,640)			812
Consolidated net income	$ 999,486							265,890					154,198			278,024			741,909				61,587	(321,359)
Common stock dividend (in dollars per share)	$ 3.03
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (13,739)
Proceeds from Noncontrolling Interests	9,595												9,595
Other comprehensive income (loss)	19,158																		(809)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	11,776,826	66,723	6,735,154	10,311,894	(336,578)	2,720	(5,003,087)	2,533,091	38,750	1,050,125	1,394,764	49,452	1,869,923	1,869,923	0	3,641,422	3,609,699	31,723	8,205,806	8,198,141	7,665	0	653,841	1,122,792	170,942	951,850
Dividends, Preferred Stock, Cash	4,580	4,580	0	0	0	0	0	518	0	0	518	0															4,000
Consolidated net income	164,011	4,308	0	159,703	0	0	0	97,485	0	0	97,485	0	48,955	48,955	0	63,110	63,639	(529)	316,659	316,401	0	258	19,546	(380,148)	(380,148)	0
Dividends, Common Stock, Cash	(205,408)	0	0	(205,408)	0	0	0									(36,000)	(36,000)	0
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	31,636	31,636	0	0	0	0	0												31,636	0	0	31,636
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(190)	(190)	0	0	0	0	0									(190)	0	(190)
Proceeds from Noncontrolling Interests	9,595	9,595	0	0	0	0	0						9,595	0	9,595
Other comprehensive income (loss)	12,540	0	0	0	12,540	0	0												(491)	0	(491)	0
Proceeds from Contributions from Parent																			1,000,000	1,000,000	0	0
Common stock issuances related to stock plans	(34,141)	0	(15,214)	0	0	0	(18,927)
Other																			(13)	(13)	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	11,818,571	107,492	6,750,368	10,266,189	(324,038)	2,720	(4,984,160)	2,630,058	38,750	1,050,125	1,491,731	49,452	1,928,473	1,918,878	9,595	3,668,342	3,637,338	31,004	9,553,597	9,514,529	7,174	31,894	673,387	742,644	(209,206)	951,850
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	(4,707)							518					(9,117)			(724)			554
Dividends, Preferred Stock, Cash	4,580	4,580	0	0	0	0	0	518	0	0	518	0															4,000
Consolidated net income	555,882	(4,707)	0	560,589	0	0	0	118,002	0	0	118,002	0	74,889	84,006	(9,117)	149,347	150,071	(724)	274,390	273,836	0	554	26,915	27,357	27,357	0
Dividends, Common Stock, Cash	(205,471)	0	0	(205,471)	0	0	0									(50,000)	(50,000)	0	(249,500)	(249,500)	0	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (290)	(290)	0	0	0	0	0									(290)	0	(290)
Common stock dividend (in dollars per share)	$ 1.01
Other comprehensive income (loss)	$ 10,668	0	0	0	10,668	0	0												295	0	295	0
Common stock issuances related to stock plans	(19,486)	0	(14,745)	0	0	0	(4,741)
Other																			(12)	(12)	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	12,194,266	97,915	6,765,113	10,621,307	(313,370)	2,720	(4,979,419)	2,747,542	38,750	1,050,125	1,609,215	49,452	2,003,362	2,002,884	478	3,767,399	3,737,409	29,990	9,578,770	9,538,853	7,469	32,448	700,302	770,001	(181,849)	951,850
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	13,064,892	97,907	7,632,895	10,502,041	(191,754)	2,797	(4,978,994)	2,679,461	38,750	1,050,125	1,541,134	49,452	2,040,537	2,037,190	3,347	3,781,815	3,753,990	27,825	9,493,448	9,406,343	55,370	31,735	702,816	949,767	(137,083)	1,086,850
Dividends, Preferred Stock, Cash	4,580	4,580	0	0	0	0	0	518	0	0	518	0															4,000
Consolidated net income	312,299	1,364	0	310,935	0	0	0	41,673	0	0	41,673	0	20,940	23,081	(2,141)	59,397	61,026	(1,629)	244,024	243,470	0	554	10,142	27,545	27,545	0
Dividends, Common Stock, Cash	(226,194)	0	0	(226,194)	0	0	0						(12,500)	(12,500)	0	(80,000)	(80,000)	0	(160,250)	(160,250)	0	0
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	14,577	14,577	0	0	0	0	0												14,577	0	0	14,577
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(574)	(574)	0	0	0	0	0									(104)	0	(104)	(470)	0	0	(470)
Other comprehensive income (loss)	2,027	0	0	0	2,027	0	0												(786)	0	(786)	0
Proceeds from Contributions from Parent																			1,457,676	1,457,676	0	0
Common stock issuances related to stock plans	(4,481)	0	15,118	0	0	0	(19,599)
Other																			(28)	(28)	0	0
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	5,092							1,554					(7,404)			(3,426)			2,183
Consolidated net income	$ 1,374,026							280,219					161,942			225,513			866,591				67,544	81,001
Common stock dividend (in dollars per share)	$ 3.21
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (13,739)
Proceeds from Noncontrolling Interests	25,708												25,708
Other comprehensive income (loss)	(3,699)																		(4,388)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	13,166,928	108,694	7,617,777	10,586,782	(189,727)	2,797	(4,959,395)	2,720,616	38,750	1,050,125	1,582,289	49,452	2,048,977	2,047,771	1,206	3,761,108	3,735,016	26,092	11,048,191	10,947,211	54,584	46,396	712,958	977,312	(109,538)	1,086,850
Dividends, Preferred Stock, Cash	4,580	4,580	0	0	0	0	0	518	0	0	518	0															4,000
Consolidated net income	392,014	770	0	391,244	0	0	0	88,457	0	0	88,457	0	58,265	61,888	(3,623)	66,948	67,954	(1,006)	263,260	262,441	0	819	13,857	25,759	25,759	0
Dividends, Common Stock, Cash	(226,248)	0	0	(226,248)	0	0	0						(27,500)	(27,500)	0	(9,000)	(9,000)	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(113)	(113)	0	0	0	0	0									(113)	0	(113)
Proceeds from Noncontrolling Interests	25,708	25,708	0	0	0	0	0						25,708	0	25,708
Other comprehensive income (loss)	(3,292)	0	0	0	(3,292)	0	0												(1,773)	0	(1,773)	0
Common stock issuances related to stock plans	(17,128)	0	(16,528)	0	0	0	(600)
Other																			15	15	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	13,367,545	130,479	7,634,305	10,751,778	(193,019)	2,797	(4,958,795)	2,808,555	38,750	1,050,125	1,670,228	49,452	2,105,450	2,082,159	23,291	3,818,943	3,793,970	24,973	11,309,693	11,209,667	52,811	47,215	726,815	1,003,071	(83,779)	1,086,850
Net Income (Loss) Attributable to Noncontrolling Interest, Preferred Unit Holders	2,959							518					(1,640)			(791)			810
Dividends, Preferred Stock, Cash	4,580	4,580	0	0	0	0	0	518	0	0	518	0															$ 4,000
Consolidated net income	669,714	2,959	0	666,755	0	0	0	150,089	0	0	150,089	0	82,737	84,377	(1,640)	99,169	99,960	(791)	359,307	358,497	0	810	43,545	27,697	27,697	0
Dividends, Common Stock, Cash	(226,257)	0	0	(226,257)	0	0	0									(53,000)	(53,000)	0	(157,750)	(157,750)	0	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (1,318)	(1,318)	0	0	0	0	0									(507)	0	(507)	(811)	0	0	(811)
Common stock dividend (in dollars per share)	$ 1.07
Other comprehensive income (loss)	$ (2,434)	0	0	0	(2,434)	0	0												(1,829)	0	(1,829)	0
Common stock issuances related to stock plans	(16,338)	0	(15,065)	0	0	0	(1,273)
Other																			(12)	(12)	0	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 13,819,008	$ 127,540	$ 7,649,370	$ 11,192,276	$ (195,453)	$ 2,797	$ (4,957,522)	$ 2,958,126	$ 38,750	$ 1,050,125	$ 1,819,799	$ 49,452	$ 2,188,187	$ 2,166,536	$ 21,651	$ 3,864,605	$ 3,840,930	$ 23,675	$ 11,508,598	$ 11,410,402	$ 50,982	$ 47,214	$ 770,360	$ 1,030,768	$ (56,082)	$ 1,086,850