Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total		Subsidiaries' Preferred Stock [Member]		Common Stock [Member]	Treasury Stock [Member]	Paid In Capital [Member]	Retained Earnings [Member]		Accumulated Other Comprehensive Income [Member]	Entergy Arkansas [Member]	Entergy Arkansas [Member] Common Stock [Member]	Entergy Arkansas [Member] Paid In Capital [Member]	Entergy Arkansas [Member] Retained Earnings [Member]	Entergy Gulf States Louisiana [Member]	Entergy Gulf States Louisiana [Member] Preferred Membership Interest	Entergy Gulf States Louisiana [Member] Member's Equity [Member]	Entergy Gulf States Louisiana [Member] Accumulated Other Comprehensive Income [Member]	Entergy Louisiana [Member]	Entergy Louisiana [Member] Preferred Membership Interest	Entergy Louisiana [Member] Member's Equity [Member]	Entergy Louisiana [Member] Accumulated Other Comprehensive Income [Member]	Entergy Mississippi [Member]	Entergy Mississippi [Member] Common Stock [Member]	Entergy Mississippi [Member] Capital Stock Expense and Other [Member]	Entergy Mississippi [Member] Retained Earnings [Member]	Entergy New Orleans [Member]	Entergy New Orleans [Member] Common Stock [Member]	Entergy New Orleans [Member] Paid In Capital [Member]	Entergy New Orleans [Member] Retained Earnings [Member]	Entergy Texas [Member]	Entergy Texas [Member] Common Stock [Member]	Entergy Texas [Member] Paid In Capital [Member]	Entergy Texas [Member] Retained Earnings [Member]	System Energy [Member]	System Energy [Member] Common Stock [Member]	System Energy [Member] Retained Earnings [Member]
Beginning Balance at Dec. 31, 2013	$ 9,726,466		$ 94,000		$ 2,548	$ (5,533,942)	$ 5,368,131	$ 9,825,053		$ (29,324)	$ 1,719,718	$ 470	$ 588,471	$ 1,130,777	$ 1,460,977	$ 10,000	$ 1,479,179	$ (28,202)	$ 2,975,652	$ 100,000	$ 2,885,287	$ (9,635)	$ 951,577	$ 199,326	$ (690)	$ 752,941	$ 206,283	$ 33,744	$ 36,294	$ 136,245	$ 887,027	$ 49,452	$ 481,994	$ 355,581	$ 876,107	$ 789,350	$ 86,757
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	600,334	[1]	9,777	[1]	0	0	0	590,557	[1]	0	57,375	0	0	57,375	82,643	0	82,643	0	128,045	0	128,045	0	52,403	0	0	52,403	14,668	0	0	14,668	31,750	0	0	31,750	50,550	0	50,550
Other comprehensive income (loss)	60,392		0		0	0	0	0		60,392					259	0	0	259	(589)	0	0	(589)
Partners' Capital Account, Contributions																			1,052	0	1,052	0
Payments for Repurchase of Common Stock	(18,259)		0		0	(18,259)	0	0		0
Common stock issuances related to stock plans	94,540		0		0	104,276	(9,736)	0		0
Common stock dividends declared	(297,228)		0		0	0	0	(297,228)		0					(77,845)	0	(77,845)	0	(135,823)	0	(135,823)	0									(40,000)	0	0	(40,000)	(45,000)	0	(45,000)
Preferred dividend requirements of subsidiaries	(9,777)	[1]	(9,777)	[1]	0	0	0	0		0	(3,437)	0	0	(3,437)	(415)	0	(415)	0	(3,494)	0	(3,494)	0	(1,414)	0	0	(1,414)	(482)	0	0	(482)
Other															(18)	0	(18)	0
Ending Balance at Jun. 30, 2014	10,156,468		94,000		2,548	(5,447,925)	5,358,395	10,118,382		31,068	1,773,656	470	588,471	1,184,715	1,465,601	10,000	1,483,544	(27,943)	2,964,843	100,000	2,875,067	(10,224)	1,002,566	199,326	(690)	803,930	220,469	33,744	36,294	150,431	878,777	49,452	481,994	347,331	881,657	789,350	92,307
Beginning Balance at Dec. 31, 2014	10,101,725		94,000		2,548	(5,497,526)	5,375,353	10,169,657		(42,307)	1,824,237	470	588,471	1,235,296	1,430,563	10,000	1,473,910	(53,347)	2,916,424	100,000	2,842,300	(25,876)	962,170	199,326	(690)	763,534	228,025	33,744	36,294	157,987	891,831	49,452	481,994	360,385	870,511	789,350	81,161
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Consolidated net income	456,651	[1]	9,759	[1]	0	0	0	446,892	[1]	0	39,390	0	0	39,390	87,808	0	87,808	0	147,282	0	147,282	0	51,214	0	0	51,214	21,556	0	0	21,556	31,481	0	0	31,481	47,393	0	47,393
Other comprehensive income (loss)	(4,509)		0		0	0	0	0		(4,509)					860	0	0	860	(68)	0	0	(68)
Payments for Repurchase of Common Stock	(25,078)		0		0	(25,078)	0	0		0
Common stock issuances related to stock plans	31,425		0		0	44,445	(13,020)	0		0
Common stock dividends declared	(298,259)		0		0	0	0	(298,259)		0													(32,500)	0	0	(32,500)	(7,250)	0	0	(7,250)					(122,000)	0	(122,000)
Preferred dividend requirements of subsidiaries	(9,759)	[1]	(9,759)	[1]	0	0	0	0		0	(3,437)	0	0	(3,437)	(412)	0	(412)	0	(3,475)	0	(3,475)	0	(1,414)	0	0	(1,414)	(482)	0	0	(482)
Other															(15)	0	(15)	0
Ending Balance at Jun. 30, 2015	$ 10,252,196		$ 94,000		$ 2,548	$ (5,478,159)	$ 5,362,333	$ 10,318,290		$ (46,816)	$ 1,860,190	$ 470	$ 588,471	$ 1,271,249	$ 1,518,804	$ 10,000	$ 1,561,291	$ (52,487)	$ 3,060,163	$ 100,000	$ 2,986,107	$ (25,944)	$ 979,470	$ 199,326	$ (690)	$ 780,834	$ 241,849	$ 33,744	$ 36,294	$ 171,811	$ 923,312	$ 49,452	$ 481,994	$ 391,866	$ 795,904	$ 789,350	$ 6,554

[1] Consolidated net income and preferred dividend requirements of subsidiaries for 2015 and 2014 include $6.4 million and $6.4 million, respectively, of preferred dividends on subsidiaries’ preferred stock without sinking fund that is not presented within equity.