Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended							3 Months Ended		9 Months Ended
	Oct. 28, 2022	Sep. 30, 2022	Jun. 30, 2022	May 31, 2022	Mar. 31, 2022	Oct. 31, 2021	Aug. 31, 2021	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jan. 31, 2021
Equity [Abstract]
Common stock dividend (in dollars per share)									$ 1.01	$ 0.95	$ 3.03	$ 2.85
Common Stock, Shares Authorized		499,000,000							499,000,000		499,000,000		499,000,000
Preferred Stock, Shares Authorized		1,000,000							1,000,000		1,000,000		1,000,000
Forward Sale Agreement, Aggregate Compensation to Sales Agents		$ 1,900	$ 2,500		$ 1,700	$ 300	$ 1,900	$ 500
Stock Issued During Period, Shares, Treasury Stock Reissued											829,048
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									900,000	1,000,000	900,000	1,000,000
Forward Contract Indexed to Issuer's Equity, Shares		1,666,172	2,124,086		1,538,010	250,743	1,692,555	416,853
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share		$ 115.46	$ 116.94		$ 108.14	$ 100.35	$ 111.16	$ 106.87
Forward Contract Indexed to Equity, Settlement, Cash, Amount		$ 194,200	$ 250,900		$ 168,000	$ 25,400	$ 190,100	$ 45,000	$ 194,200		$ 194,200
Stock Issued During Period, Shares, New Issues											0	265,468
Equity Distribution Sales Agreement, Net Sales Price												$ 26,800
Equity Distribution Sales Agreement, Gross Sales Price												28,200
Equity Distribution Sales Agreement, General Issuance Costs												1,100
Equity Distribution Sales Agreement, Aggregate Compensation to Sales Agents												$ 300
Equity Distribution Program
Equity [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount											4.8
Forward Contract Indexed to Equity, Settlement, Cash, Amount		1,077,800							1,077,800		$ 1,077,800
Equity Distribution Sales Agreement, Maximum Aggregate Gross Sales Price [Abstract]														$ 1,000,000
Equity Distribution Sales Agreement Increase in Aggregate Gross Sales Price				$ 1,000,000
Entergy Louisiana [Member]
Equity [Abstract]
Members' Equity Attributable to Noncontrolling Interest		32,448							32,448		$ 32,448		$ 0
LURC's percentage of annual dividends				1.00%							1.00%
ELL's percentage of annual dividends				99.00%							99.00%
Entergy Louisiana [Member] | Restoration Law Trust I
Equity [Abstract]
Members' Equity Attributable to Noncontrolling Interest		32,448							32,448		$ 32,448		0
Entergy Arkansas [Member]
Equity [Abstract]
Members' Equity Attributable to Noncontrolling Interest		29,990							29,990		29,990		33,110
Entergy Mississippi [Member]
Equity [Abstract]
Members' Equity Attributable to Noncontrolling Interest		478							478		478		0
Entergy Mississippi [Member] | MS Sunflower Partnership, LLC
Equity [Abstract]
Members' Equity Attributable to Noncontrolling Interest		$ 478							$ 478		$ 478		$ 0
System Energy [Member]
Equity [Abstract]
Common Stock, Shares Authorized		1,000,000							1,000,000		1,000,000		1,000,000
Entergy Texas [Member]
Equity [Abstract]
Common Stock, Shares Authorized		200,000,000							200,000,000		200,000,000		200,000,000
Subsequent Event [Member]
Equity [Abstract]
Common stock dividend (in dollars per share)	$ 1.07