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, 2011	$ 9,055,270		$ 94,000		$ 2,548		$ (5,680,468)		$ 5,360,682		$ 9,446,960		$ (168,452)		$ 1,444,124	$ 470	$ 588,444	$ 855,210	$ 1,333,776	$ 10,000	$ 1,393,386	$ (69,610)	$ 2,564,929	$ 100,000	$ 2,504,436	$ (39,507)	$ 835,706	$ 199,326	$ (690)	$ 637,070	$ 181,165	$ 33,744	$ 36,294	$ 111,127	$ 899,355	$ 49,452	$ 481,994	$ 367,909	$ 800,563	$ 789,350	$ 11,213
Consolidated net income	868,363	[1]	21,690	[1]	0	[1]	0	[1]	0	[1]	846,673	[1]	0	[1]	152,365	0	0	152,365	158,977	0	158,977	0	281,081	0	281,081	0	46,768	0	0	46,768	17,065	0	0	17,065	41,971	0	0	41,971	111,866	0	111,866
Member contribution																			1,000	0	1,000	0	253,661	0	253,661	0
Other comprehensive income (loss)	(124,631)		0		0		0		0		0		(124,631)						4,381	0	0	4,381	(6,625)	0	0	(6,625)
Common stock issuances related to stock plans	102,819		0		0		105,649		(2,830)		0		0
Common stock dividends declared	(589,042)		0		0		0		0		(589,042)		0		(10,000)	0	0	(10,000)	(114,200)	0	(114,200)	0									(1,700)	0	0	(1,700)	(87,180)	0	0	(87,180)	(79,700)	0	(79,700)
Preferred dividend requirements of subsidiaries	(21,690)	[1]	(21,690)	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	(6,873)	0	0	(6,873)	(825)	0	(825)	0	(6,950)	0	(6,950)	0	(2,828)	0	0	(2,828)	(965)	0	0	(965)
Other																			(105)	0	(105)	0
Distribution to parent																							(15,600)	0	(15,600)	0
Ending Balance at Dec. 31, 2012	9,291,089		94,000		2,548		(5,574,819)		5,357,852		9,704,591		(293,083)		1,579,616	470	588,444	990,702	1,383,004	10,000	1,438,233	(65,229)	3,070,496	100,000	3,016,628	(46,132)	879,646	199,326	(690)	681,010	195,565	33,744	36,294	125,527	854,146	49,452	481,994	322,700	832,729	789,350	43,379
Consolidated net income	166,982														14,719				27,165				45,376				13,934				1,307				922				28,006
Ending Balance at Mar. 31, 2013
Beginning Balance at Dec. 31, 2012	9,291,089		94,000		2,548		(5,574,819)		5,357,852		9,704,591		(293,083)		1,579,616	470	588,444	990,702	1,383,004	10,000	1,438,233	(65,229)	3,070,496	100,000	3,016,628	(46,132)	879,646	199,326	(690)	681,010	195,565	33,744	36,294	125,527	854,146	49,452	481,994	322,700	832,729	789,350	43,379
Consolidated net income	730,572	[1]	18,670	[1]	0	[1]	0	[1]	0	[1]	711,902	[1]	0	[1]	161,948	0	0	161,948	161,662	0	161,662	0	252,464	0	252,464	0	82,159	0	0	82,159	11,683	0	0	11,683	57,881	0	0	57,881	113,664	0	113,664
Other comprehensive income (loss)	263,759		0		0		0		0		0		263,759						37,027	0	0	37,027	36,497	0	0	36,497
Common stock issuances related to stock plans	51,156		0		0		40,877		10,279		0		0
Common stock dividends declared	(591,440)		0		0		0		0		(591,440)		0		(15,000)	0	0	(15,000)	(119,900)	0	(119,900)	0					(7,400)	0	0	(7,400)					(25,000)	0	0	(25,000)	(70,286)	0	(70,286)
Preferred dividend requirements of subsidiaries	(18,670)	[1]	(18,670)	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	(6,873)	0	0	(6,873)	(825)	0	(825)	0	(6,950)	0	(6,950)	0	(2,828)	0	0	(2,828)	(965)	0	0	(965)
Other															27	0	27	0	9	0	9	0
Distribution to parent																							(376,855)	0	(376,855)	0
Ending 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
Beginning Balance at Sep. 30, 2013
Consolidated net income	151,353														24,169				42,135				45,114				15,458				1,692				10,205				22,819
Ending Balance at Dec. 31, 2013	9,726,466														1,719,718				1,460,977				2,975,652				951,577				206,283				887,027				876,107
Consolidated net income	406,053														28,370				46,472				58,378				25,839				8,294				13,165				24,619
Ending Balance at Mar. 31, 2014
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
Consolidated net income	960,257	[1]	19,536	[1]	0	[1]	0	[1]	0	[1]	940,721	[1]	0	[1]	121,392	0	0	121,392	162,491	0	162,491	0	283,531	0	283,531	0	74,821	0	0	74,821	28,707	0	0	28,707	74,804	0	0	74,804	96,334	0	96,334
Member contribution																							1,052	0	1,052	0
Other comprehensive income (loss)	(12,983)		0		0		0		0		0		(12,983)						(25,145)	0	0	(25,145)	(16,241)	0	0	(16,241)
Common stock repurchased, value	183,271		0		0		183,271		0		0		0
Common stock issuances related to stock plans	226,909		0		0		219,687		7,222		0		0
Common stock dividends declared	(596,117)		0		0		0		0		(596,117)		0		(10,000)	0	0	(10,000)	(166,901)	0	(166,901)	0					(61,400)	0	0	(61,400)	(6,000)	0	0	(6,000)	(70,000)	0	0	(70,000)	(101,930)	0	(101,930)
Preferred dividend requirements of subsidiaries	(19,536)	[1]	(19,536)	[1]	0	[1]	0	[1]	0	[1]	0	[1]	0	[1]	(6,873)	0	0	(6,873)	(827)	0	(827)	0	(6,969)	0	(6,969)	0	(2,828)	0	0	(2,828)	(965)	0	0	(965)
Other																			(32)	0	(32)	0
Distribution to parent																							(320,601)	0	(320,601)	0
Ending 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
Beginning Balance at Sep. 30, 2014
Consolidated net income	125,006														1,037				24,313				31,665				28,882				107				3,495				19,054
Ending Balance at Dec. 31, 2014	$ 10,101,725														$ 1,824,237				$ 1,430,563				$ 2,916,424				$ 962,170				$ 228,025				$ 891,831				$ 870,511

[1] Consolidated net income and preferred dividend requirements of subsidiaries for 2014, 2013, and 2012 include $12.9 million, $12 million, and $15 million, respectively, of preferred dividends on subsidiaries’ preferred stock without sinking fund that is not presented as equity.