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																		$ 638,715
Equity, Including Portion Attributable to Noncontrolling Interest	$ 11,705,394	$ 5,440	$ 6,763,519	$ 10,240,552	$ (332,528)	$ 68,110	$ (5,039,699)	$ 3,575,855	$ 33,110	$ 3,542,745	$ 8,180,572	$ 8,278	$ 0	$ 8,172,294	$ 1,839,568	$ 0	$ 1,839,568		$ 2,483,206	$ 49,452	$ 1,050,125	$ 1,344,879	$ 38,750	$ 1,091,360	$ 951,850	$ 139,510
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	1,097,138			1,103,166		(6,028)		292,887	(4,358)	297,245	855,870		1,366	854,504	176,267	(21,355)	197,622	64,101	303,327			303,327		(276,593)		(276,593)
Common Equity Distributions								86,000		86,000	624,000			624,000
Other Comprehensive Income (Loss), Net of Tax	140,774				140,774						47,092	47,092
Noncontrolling Interest, Increase from Subsidiary Equity Issuance	31,636					31,636					31,636		31,636
Capital contribution from noncontrolling interest	24,702					24,702									24,702	24,702
Capital Contribution from Parent											1,000,000			1,000,000										135,000	135,000
Stock Issued During Period, Value, New Issues	861,993	154	861,839
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	(9,438)		(9,438)
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture	74,883		14,178				60,705
Dividends, Common Stock, Cash	(841,677)			(841,677)															(105,000)			(105,000)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(2,194)					(2,194)		(927)	(927)		(1,267)		(1,267)
Stockholders' Equity, Other											(52)			(52)
Dividends, Preferred Stock, Cash	(18,319)					(18,319)													(2,072)			(2,072)
Non-cash contribution from parent											3,597			3,597
Proceeds from Contributions from Parent								0			1,000,000								0					135,000
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)
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								150,000					0
Members' Equity								3,739,071			11,473,614				2,189,461			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	806,754	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)
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					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