Preferred Equity (Schedule Of Number Of Shares And Units Authorized And Outstanding And Dollar Value Of Preferred Stock) (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended				9 Months Ended	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Oct. 31, 2015	Dec. 31, 2013	Sep. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Payments for Repurchase of Preferred Stock and Preference Stock						$ 50,000	$ 53,868	$ 20,599
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						10,258,675	8,844,305
Temporary Equity, Carrying Amount, Attributable to Parent						219,410	219,402
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs						7	728
Entergy Louisiana [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						6,397,118	5,902,918	5,308,804	$ 5,081,809
Entergy Texas [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						1,799,407	1,422,402	1,260,167	1,068,994
Temporary Equity, Carrying Amount, Attributable to Parent						$ 35,000	$ 0
Preferred Units, Authorized						1,400,000	0
Entergy Mississippi [Member]
Payments for Repurchase of Preferred Stock and Preference Stock						$ 0	$ 21,208	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						1,542,151	1,292,226	1,177,870	1,094,791
Entergy New Orleans [Member]
Payments for Repurchase of Preferred Stock and Preference Stock						0	0	20,599
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						$ 497,579	$ 444,950	$ 415,548	$ 426,946
Entergy Corporation [Member]
Preferred Stock, Shares Authorized						1,850,000	450,000
Temporary Equity, Shares Outstanding						1,850,000	450,000
Temporary Equity, Carrying Amount, Attributable to Parent						$ 254,410	$ 219,402
Utility [Member]
Preferred Shares/Units, Outstanding						1,600,000	200,000
Temporary Equity, Carrying Amount, Attributable to Parent						$ 230,161	$ 195,153
Preferred Units, Authorized						1,600,000	200,000
Preferred Stock, 8.75% Rate [Member] | Entergy Finance Holding Inc [Member]
Preferred Stock, Shares Authorized				250,000		250,000	250,000
Temporary Equity, Shares Outstanding						250,000	250,000
Temporary Equity, Carrying Amount, Attributable to Parent						$ 24,249	$ 24,249
Preferred stock/preferred membership interests rate				8.75%		8.75%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs						$ 751
Preferred Stock, Cumulative One Thousand Dollar Par Value, Seven Point Five Percent Series [Member] | Entergy Utility Holding Company LLC [Member]
Preferred Shares/Units, Outstanding						110,000	110,000
Temporary Equity, Carrying Amount, Attributable to Parent						$ 107,425	$ 107,425
Preferred Units, Authorized			110,000			110,000	110,000
Preferred stock/preferred membership interests rate			7.50%			7.50%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs						$ 2,575
Preferred Stock, Cumulative $1,000 Par Value 6.25% Series [Domain] | Entergy Utility Holding Company LLC [Member]
Preferred Shares/Units, Outstanding						15,000	15,000
Temporary Equity, Carrying Amount, Attributable to Parent						$ 14,366	$ 14,366
Preferred Units, Authorized		15,000				15,000	15,000
Preferred stock/preferred membership interests rate		6.25%				6.25%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs						$ 634
Preferred Stock, Cumulative $1,000 Par Value 6.75% Series [Domain] | Entergy Utility Holding Company LLC [Member]
Preferred Shares/Units, Outstanding						75,000	75,000
Temporary Equity, Carrying Amount, Attributable to Parent						$ 73,370	$ 73,362
Preferred Units, Authorized	75,000					75,000	75,000
Preferred stock/preferred membership interests rate	6.75%					6.75%
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs						$ 1,630
Preferred Stock, Five Point Three Seven Five Percent, Series A [Member] | Entergy Texas [Member]
Preferred Shares/Units, Outstanding						1,400,000	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest						$ 35,000	$ 0
Preferred Units, Authorized						1,400,000	0
Preferred Stock, Five Point Three Seven Five Percent, Series A [Member] | Entergy Texas [Member]
Preferred Stock, Call Price per Share						$ 0
Preferred Shares/Units, Outstanding						1,400,000	0
Preferred Stock, Liquidation Preference Per Share					$ 25	$ 25
Temporary Equity, Carrying Amount, Attributable to Parent						$ 35,000	$ 0
Preferred Units, Authorized						1,400,000	0
Preferred stock/preferred membership interests rate					5.375%
Preferred Stock, Value, Issued					$ 35,000