Consolidated Statements Of Changes In Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Subsidiaries Preferred Stock and Noncontrolling Interest [Member]	Treasury Stock, Common [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 Mississippi [Member]	Entergy Mississippi [Member] Member's Equity [Member]	Entergy Mississippi [Member] Noncontrolling Interest [Member]	Entergy New Orleans [Member]	Entergy Texas [Member]	Entergy Texas [Member] Subsidiaries Preferred Stock [Member]	Entergy Texas [Member] Common Stock [Member]	Entergy Texas [Member] Additional 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]	Entergy Corporation [Member]
Total shareholders' equity	$ 10,961,142	$ 2,700	$ 6,549,923	$ 9,897,182	$ (449,207)	$ 35,000	$ (5,074,456)	$ 3,276,169	$ 3,276,169	$ 0	$ 7,457,688	$ 7,453,361	$ 4,327	$ 0	$ 1,672,734	$ 1,672,734	$ 0	$ 606,917	$ 2,157,578	$ 35,000	$ 49,452	$ 955,162	$ 1,117,964	$ 1,080,546	$ 951,850	$ 128,696
Consolidated net income	1,118,719	0	0	1,118,492	0	227	0	298,484	316,576	(18,092)	653,984	653,984	0	0	166,834	166,834	0	31,798	228,824	0	0	0	228,824	106,814	0	106,814
Proceeds from Contributions from Parent											125,000	125,000	0	0					95,000	0	0	95,000	0	0
Other Comprehensive Income (Loss), Net of Tax	116,679	0	0	0	116,679	0	0				3,951	0	3,951	0
Stock Issued During Period, Value, New Issues	204,214	20	204,194	0	0	0	0												3,713	3,750	0	(37)	0
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(3,438)	0	(3,438)	0	0	0	0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	50,317	0	15,560	0	0	0	34,757
Dividends, Common Stock, Cash	(775,122)	0	0	(775,122)	0	0	0	(50,000)	(50,000)	0	(60,000)	(60,000)	0	0										(96,000)	0	(96,000)
Proceeds from Noncontrolling Interests	51,202	0	0	0	0	51,202	0	51,202	0	51,202					0
Stockholders' Equity, Other											(51)	(51)	0	0
Dividends, Preferred Stock, Cash	(18,319)	0	0	0	0	(18,319)	0												(1,909)	0	0	0	(1,909)				$ (16,000)
Total shareholders' equity	11,705,394	2,720	6,766,239	10,240,552	(332,528)	68,110	(5,039,699)	3,575,855	3,542,745	33,110	8,180,572	8,172,294	8,278	0	1,839,568	1,839,568	0	638,715	2,483,206	38,750	49,452	1,050,125	1,344,879	1,091,360	951,850	139,510
Consolidated net income	1,097,138	0	0	1,103,166	0	(6,028)	0	292,887	297,245	(4,358)	855,870	854,504	0	1,366	176,267	197,622	(21,355)	64,101	303,327	0	0	0	303,327	(276,593)	0	(276,593)
Proceeds from Contributions from Parent											1,000,000	1,000,000	0	0					0					135,000	135,000	0
Other Comprehensive Income (Loss), Net of Tax	140,774	0	0	0	140,774	0	0				47,092	0	47,092	0
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	31,636	0	0	0	0	31,636	0				31,636	0	0	31,636
Noncash Capital Contribution from Parent											3,597	3,597	0	0
Stock Issued During Period, Value, New Issues	861,993	77	861,916	0	0	0	0
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(9,438)	0	(9,438)	0	0	0	0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	74,883	0	14,178	0	0	0	60,705
Dividends, Common Stock, Cash	(841,677)	0	0	(841,677)	0	0	0	(86,000)	(86,000)	0	(624,000)	(624,000)	0	0					(105,000)	0	0	0	(105,000)
Proceeds from Noncontrolling Interests	24,702	0	0	0	0	24,702	0	0							24,702	0	24,702
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(2,194)	0	0	0	0	(2,194)	0	(927)	0	(927)	(1,267)	0	0	(1,267)
Stockholders' Equity, Other											(52)	(52)	0	0
Dividends, Preferred Stock, Cash	(18,319)	0	0	0	0	(18,319)	0												(2,072)	0	0	0	(2,072)				(16,000)
Total shareholders' equity	13,064,892	2,797	7,632,895	10,502,041	(191,754)	97,907	(4,978,994)	3,781,815	3,753,990	27,825	9,493,448	9,406,343	55,370	31,735	2,040,537	2,037,190	3,347	702,816	2,679,461	38,750	49,452	1,050,125	1,541,134	949,767	1,086,850	(137,083)
Consolidated net income	2,362,310	0	0	2,356,536	0	5,774	0	396,850	402,081	(5,231)	1,273,370	1,270,382	0	2,988	181,969	192,271	(10,302)	228,938	291,273	0	0	0	291,273	108,772	0	108,772
Proceeds from Contributions from Parent											1,457,676	1,457,676	0	0					150,000	0	0	150,000	0	0
Other Comprehensive Income (Loss), Net of Tax	29,294	0	0	0	29,294	0	0				(572)	0	(572)	0
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	14,577	0	0	0	0	14,577	0				14,577	0	0	14,577
Stock Issued During Period, Value, New Issues	132,417	13	132,404	0	0	0	0
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(1,768)	0	(1,768)	0	0	0	0
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	57,376	0	31,880	0	0	0	25,496
Dividends, Common Stock, Cash	(918,193)	0	0	(918,193)	0	0	0	(417,000)	(417,000)	0	(660,750)	(660,750)	0	0	(40,000)	(40,000)	0	(125,000)						(170,000)	(170,000)	0
Proceeds from Noncontrolling Interests	25,708	0	0	0	0	25,708	0	0							25,708	0	25,708
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(5,188)	0	0	0	0	(5,188)	0	(995)	0	(995)	(4,193)	0	0	(4,193)
Stockholders' Equity, Other											(37)	(37)	0	0
Dividends, Preferred Stock, Cash	(18,319)	0	0	0	0	(18,319)	0												(2,072)	0	0	0	(2,072)				$ (16,000)
Total shareholders' equity	$ 14,743,106	$ 2,810	$ 7,795,411	$ 11,940,384	$ (162,460)	$ 120,459	$ (4,953,498)	$ 3,760,670	$ 3,739,071	$ 21,599	$ 11,573,519	$ 11,473,614	$ 54,798	$ 45,107	$ 2,208,214	$ 2,189,461	$ 18,753	$ 806,754	$ 3,118,662	$ 38,750	$ 49,452	$ 1,200,125	$ 1,830,335	$ 888,539	$ 916,850	$ (28,311)