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] 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
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	1,364							518					(2,141)			(1,629)			554
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)
Common Stock, Dividends, Per Share, Declared	$ 1.07
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (4,580)							(518)
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																0			1,457,676	1,457,676	0	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
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
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
Noncontrolling Interest in Net Income (Loss) Preferred Unit Holders, Redeemable	1,255							518					(2,302)			(1,818)			795
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)
Common Stock, Dividends, Per Share, Declared	$ 1.13
Payments of Ordinary Dividends, Preferred Stock and Preference Stock	$ (4,580)							(518)
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	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
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