Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Common Stock [Member]	Treasury Stock, Common [Member]	Subsidiaries Preferred Stock and Noncontrolling Interests [Member]	Entergy Texas [Member]	Entergy Texas [Member] Additional Paid-in Capital [Member]	Entergy Texas [Member] Retained Earnings [Member]	Entergy Texas [Member] Common Stock [Member]	Entergy Texas [Member] Preferred Stock [Member]	Entergy Mississippi [Member]	Entergy Mississippi [Member] Member's Equity [Member]	Entergy Mississippi [Member] Noncontrolling Interest [Member]	Entergy Arkansas [Member]	Entergy Arkansas [Member] Member's Equity [Member]	Entergy Arkansas [Member] Noncontrolling Interest [Member]	Entergy Louisiana [Member]	Entergy Louisiana [Member] Restoration Law Trust II [Member] Entergy Finance Company [Member]	Entergy Louisiana [Member] Member's Equity [Member]	Entergy Louisiana [Member] AOCI Attributable to Parent [Member]	Entergy Louisiana [Member] Noncontrolling Interest [Member]	Entergy New Orleans [Member]	System Energy [Member]	System Energy [Member] Retained Earnings [Member]	System Energy [Member] Common Stock [Member]	Entergy Corporation [Member]
Equity, Including Portion Attributable to Noncontrolling Interest	$ 13,064,892	$ 7,632,895	$ 10,502,041	$ (191,754)	$ 2,797	$ (4,978,994)	$ 97,907	$ 2,679,461	$ 1,050,125	$ 1,541,134	$ 49,452	$ 38,750	$ 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	0	0	0	0	0	4,580	518	0	518	0	0																$ 4,000
Consolidated net income	312,299	0	310,935	0	0	0	1,364	41,673	0	41,673	0	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	(226,194)	0	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	0	0	0	0	0	14,577												14,577		0	0	14,577
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(574)	0	0	0	0	0	(574)									(104)	0	(104)	(470)		0	0	(470)
Other Comprehensive Income (Loss), Net of Tax	2,027	0	0	2,027	0	0	0												(786)		0	(786)	0
Proceeds from Contributions from Parent																			1,457,676		1,457,676	0	0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(4,481)	15,118	0	0	0	(19,599)	0
Stockholders' Equity, Other																			(28)		(28)	0	0
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	2,133							1,036					(5,764)			(2,635)			1,373
Consolidated net income	$ 704,312							130,130					79,205			126,344			507,284					23,999	53,304
Common Stock, Dividends, Per Share, Declared	$ 2.14
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (9,159)							(1,036)
Other Comprehensive Income (Loss), Net of Tax	(1,265)																		(2,559)
Proceeds from Contributions from Parent																0			1,457,676						0
Proceeds from Noncontrolling Interests	25,708												25,708
Equity, Including Portion Attributable to Noncontrolling Interest	13,166,928	7,617,777	10,586,782	(189,727)	2,797	(4,959,395)	108,694	2,720,616	1,050,125	1,582,289	49,452	38,750	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
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	770							518					(3,623)			(1,006)			819
Dividends, Preferred Stock, Cash	4,580	0	0	0	0	0	4,580	518	0	518	0	0																4,000
Consolidated net income	392,014	0	391,244	0	0	0	770	88,457	0	88,457	0	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	(226,248)	0	0	0	0						(27,500)	(27,500)	0	(9,000)	(9,000)	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (113)	0	0	0	0	0	(113)									(113)	0	(113)
Common Stock, Dividends, Per Share, Declared	$ 1.07
Other Comprehensive Income (Loss), Net of Tax	$ (3,292)	0	0	(3,292)	0	0	0												(1,773)		0	(1,773)	0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(17,128)	(16,528)	0	0	0	(600)	0
Stockholders' Equity, Other																			15		15	0	0
Proceeds from Noncontrolling Interests	25,708	0	0	0	0	0	25,708						25,708	0	25,708
Equity, Including Portion Attributable to Noncontrolling Interest	13,367,545	7,634,305	10,751,778	(193,019)	2,797	(4,958,795)	130,479	2,808,555	1,050,125	1,670,228	49,452	38,750	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
Equity, Including Portion Attributable to Noncontrolling Interest	14,743,106	7,795,411	11,940,384	(162,460)	2,810	(4,953,498)	120,459	3,118,662	1,200,125	1,830,335	49,452	38,750	2,208,214	2,189,461	18,753	3,760,670	3,739,071	21,599	11,573,519		11,473,614	54,798	45,107	806,754	888,539	(28,311)	916,850
Redeemable Noncontrolling Interest, Equity, Preferred, Fair Value																				$ 1,500,000
Dividends, Preferred Stock, Cash	4,580	0	0	0	0	0	4,580	518	0	518	0	0																4,000
Consolidated net income	76,536	0	75,281	0	0	0	1,255	36,744	0	36,744	0	0	27,432	29,734	(2,302)	(32,280)	(30,462)	(1,818)	182,723		181,928	0	795	(48,980)	31,118	31,118	0
Dividends, Common Stock, Cash	(240,959)	0	(240,959)	0	0	0	0												(97,500)		(97,500)	0	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(1,108)	0	0	0	0	0	(1,108)									(250)	0	(250)	(858)		0	0	(858)
Other Comprehensive Income (Loss), Net of Tax	(3,668)	0	0	(3,668)	0	0	0												(2,024)		0	(2,024)	0
Proceeds from Contributions from Parent																275,000	275,000	0							150,000	0	150,000
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(5,039)	25,842	0	0	0	(30,881)	0
Stockholders' Equity, Other																			(43)		(43)	0	0
Noncash Capital Contribution from Parent																			976		976	0	0
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	4,065							1,036					(4,035)			(2,643)			1,583
Consolidated net income	$ 128,268							126,966					106,997			63,079			313,837					(27,847)	55,966
Common Stock, Dividends, Per Share, Declared	$ 2.26
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (9,159)							(1,036)
Other Comprehensive Income (Loss), Net of Tax	242,821																		(4,047)
Proceeds from Contributions from Parent																695,000			0						150,000
Proceeds from Noncontrolling Interests	0												0
Equity, Including Portion Attributable to Noncontrolling Interest	14,574,366	7,769,569	11,774,706	(166,128)	2,810	(4,922,617)	116,026	3,154,888	1,200,125	1,866,561	49,452	38,750	2,235,646	2,219,195	16,451	4,003,140	3,983,609	19,531	11,656,793		11,558,975	52,774	45,044	757,774	1,069,657	2,807	1,066,850
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	2,810							518					(1,733)			(825)			788
Dividends, Preferred Stock, Cash	4,580	0	0	0	0	0	4,580	518	0	518	0	0																$ 4,000
Consolidated net income	51,732	0	48,922	0	0	0	2,810	90,222	0	90,222	0	0	79,565	81,298	(1,733)	95,359	96,184	(825)	131,114		130,326	0	788	21,133	24,848	24,848	0
Dividends, Common Stock, Cash	(241,296)	0	(241,296)	0	0	0	0						(22,300)	(22,300)	0				(566,600)		(566,600)	0	0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (330)	0	0	0	0	0	(330)									(31)	0	(31)	(299)		0	0	(299)
Common Stock, Dividends, Per Share, Declared	$ 1.13
Other Comprehensive Income (Loss), Net of Tax	$ 246,489	0	0	246,489	0	0	0												(2,023)		0	(2,023)	0
Proceeds from Contributions from Parent																420,000	420,000	0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	(55,274)	(16,352)	0	0	0	(38,922)	0
Stockholders' Equity, Other																			(40)		(40)	0	0
Equity, Including Portion Attributable to Noncontrolling Interest	$ 14,681,655	$ 7,785,921	$ 11,582,332	$ 80,361	$ 2,810	$ (4,883,695)	$ 113,926	$ 3,244,592	$ 1,200,125	$ 1,956,265	$ 49,452	$ 38,750	$ 2,292,911	$ 2,278,193	$ 14,718	$ 4,518,468	$ 4,499,793	$ 18,675	$ 11,218,945		$ 11,122,661	$ 50,751	$ 45,533	$ 778,907	$ 1,094,505	$ 27,655	$ 1,066,850
Redeemable Noncontrolling Interest, Equity, Preferred, Fair Value																				$ 1,500,000