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] Noncontrolling Interest [Member]	Entergy Arkansas [Member] Member Units	Entergy Louisiana [Member]	Entergy Louisiana [Member] AOCI Attributable to Parent [Member]	Entergy Louisiana [Member] Noncontrolling Interest [Member]	Entergy Louisiana [Member] Member Units	Entergy Mississippi [Member]	Entergy Mississippi [Member] Noncontrolling Interest [Member]	Entergy Mississippi [Member] Member Units	Entergy New Orleans [Member]	Entergy Texas [Member]	Entergy Texas [Member] Common Stock [Member]	Entergy Texas [Member] Additional Paid-in Capital [Member]	Entergy Texas [Member] Retained Earnings [Member]	Entergy Texas [Member] Preferred Stock	System Energy [Member]	System Energy [Member] Common Stock [Member]	System Energy [Member] Retained Earnings [Member]
Members' Equity																		$ 702,816
Equity, Including Portion Attributable to Noncontrolling Interest	$ 13,064,892	$ 5,594	$ 7,630,098	$ 10,502,041	$ (191,754)	$ 97,907	$ (4,978,994)	$ 3,781,815	$ 27,825	$ 3,753,990	$ 9,493,448	$ 55,370	$ 31,735	$ 9,406,343	$ 2,040,537	$ 3,347	$ 2,037,190		$ 2,679,461	$ 49,452	$ 1,050,125	$ 1,541,134	$ 38,750	$ 949,767	$ 1,086,850	$ (137,083)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	2,362,310			2,356,536		5,774		396,850	(5,231)	402,081	1,273,370		2,988	1,270,382	181,969	(10,302)	192,271	228,938	291,273			291,273		108,772		108,772
Dividends, Common Stock																								170,000	170,000
Common Equity Distributions								417,000		417,000	660,750			660,750	40,000		40,000	125,000
Other Comprehensive Income (Loss), Net of Tax	29,294				29,294						(572)	(572)
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	14,577					14,577					14,577		14,577
Capital contribution from noncontrolling interest	25,708					25,708									25,708	25,708
Capital Contribution from Parent											1,457,676			1,457,676					150,000		150,000
Stock Issued During Period, Value, New Issues	132,417	26	132,391
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(1,768)		(1,768)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	57,376		31,880				25,496
Dividends, Common Stock, Cash	(918,193)			(918,193)																				(170,000)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(5,188)					(5,188)		(995)	(995)		(4,193)		(4,193)
Stockholders' Equity, Other											(37)			(37)
Dividends, Preferred Stock, Cash	(18,319)					(18,319)													(2,072)			(2,072)
Proceeds from Contributions from Parent								0			1,457,676				0				150,000					0
Members' Equity																		806,754
Equity, Including Portion Attributable to Noncontrolling Interest	14,743,106	5,620	7,792,601	11,940,384	(162,460)	120,459	(4,953,498)	3,760,670	21,599	3,739,071	11,573,519	54,798	45,107	11,473,614	2,208,214	18,753	2,189,461		3,118,662	49,452	1,200,125	1,830,335	38,750	888,539	916,850	(28,311)
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,061,184			1,055,590		5,594		319,466	(5,300)	324,766	890,771		3,126	887,645	245,407	(10,551)	255,958	15,847	293,622			293,622		103,500		103,500
Dividends, Common Stock																								170,000	107,906	62,094
Common Equity Distributions								310,000		310,000	859,100			859,100	44,633		44,633	125,000
Other Comprehensive Income (Loss), Net of Tax	205,229				205,229						(1,140)	(1,140)
Capital Contribution from Parent								695,000		695,000														150,000	150,000
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	182,101		40,924				141,177
Dividends, Common Stock, Cash	(981,659)			(981,659)															(69,000)			(69,000)		(108,000)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(6,658)					(6,658)		(1,131)	(1,131)		(5,527)		(5,527)
Stockholders' Equity, Other											(105)			(105)
Dividends, Preferred Stock, Cash	(18,319)					(18,319)													(2,072)			(2,072)
Non-cash contribution from parent											976			976
Proceeds from Contributions from Parent								695,000			0				0				0					150,000
Members' Equity								4,448,837			11,503,030				2,400,786			697,601
Equity, Including Portion Attributable to Noncontrolling Interest	15,184,984	5,620	7,833,525	12,014,315	42,769	101,076	(4,812,321)	4,464,005	15,168	4,448,837	11,599,394	53,658	42,706	11,503,030	2,408,988	8,202	2,400,786	697,601	3,341,212	49,452	1,200,125	2,052,885	38,750	972,039	958,944	13,095
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,773,328			1,758,272		15,056		437,453	(3,079)	440,532	1,112,900		2,952	1,109,948	308,728	(3,136)	311,864	50,411	334,071			334,071		88,095		88,095
Dividends, Common Stock																								100,000	50,000	50,000
Common Equity Distributions								190,000		190,000	756,250			756,250				140,000
Other Comprehensive Income (Loss), Net of Tax	(45,775)				(45,775)						(19,742)	(19,742)
Capital Contribution from Parent															265,500		265,500		225,000		225,000
Stock Issued During Period, Value, New Issues	1,149,102	212	1,148,890
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(13,000)		(13,000)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	64,720		9,972				54,748
Dividends, Common Stock, Cash	(1,074,151)			(1,074,151)																				(50,000)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(6,722)					(6,722)		(1,271)	(1,271)		(5,451)		(5,451)
Stockholders' Equity, Other											(51)			(51)
Dividends, Preferred Stock, Cash	(18,319)					(18,319)													(2,072)			(2,072)
Non-cash contribution from parent											386			386
Proceeds from Contributions from Parent								0			0				265,500				225,000					0
Members' Equity								4,699,369			11,857,063				2,978,150			608,012
Equity, Including Portion Attributable to Noncontrolling Interest	$ 17,014,167	$ 5,832	$ 8,979,387	$ 12,698,436	$ (3,006)	$ 91,091	$ (4,757,573)	$ 4,710,187	$ 10,818	$ 4,699,369	$ 11,931,186	$ 33,916	$ 40,207	$ 11,857,063	$ 2,983,216	$ 5,066	$ 2,978,150	$ 608,012	$ 3,898,211	$ 49,452	$ 1,425,125	$ 2,384,884	$ 38,750	$ 960,134	$ 908,944	$ 51,190