Common Equity Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended									12 Months Ended
	Nov. 30, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Oct. 31, 2021	Aug. 31, 2021	Jun. 30, 2021	May 31, 2019	Oct. 31, 2010	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	May 31, 2022	Jan. 01, 2021
Authorization of repurchase of common stock									$ 500,000
Common Stock, Dividends, Per Share, Declared										$ 4.10	$ 3.86	$ 3.74
Dividend payments received from subsidiaries										$ 301,000	$ 136,000	$ 113,000
Dividends, Common Stock, Cash										841,677	775,122	748,342
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share								$ 112.50
Payments of Stock Issuance Costs	$ 700
Proceeds from Issuance of Common Stock	$ 853,300									$ 852,555	$ 200,776	$ 0
Forward Sale Agreement, Equity Offering Shares		1,666,172	2,124,086	1,538,010	250,743	1,692,555	416,853
Options outstanding excluded from the calculation of diluted earnings per share										931,453	1,013,320	523,999
Equity Distribution Sales Agreement Increase in Aggregate Gross Sales Price													$ 1,000,000
Shares Issued, Price Per Share		$ 115.46	$ 116.94	$ 108.12	$ 100.35	$ 111.16	$ 106.87
Forward Sale Agreement, Gross Sales Price		$ 194,200	$ 250,900	$ 168,000	$ 25,400	$ 190,100	$ 45,000
Forward Sale Agreement, Aggregate Compensation to Sales Agents		$ 1,900	$ 2,500	$ 1,700	$ 300	$ 1,900	$ 500
Equity Distribution Sales Agreement, Maximum Aggregate Gross Sales Price														$ 1,000,000
Stock Issued During Period, Shares, New Issues											1,930,330
Equity Distribution Sales Agreement, Net Sales Price											$ 200,800
Equity Distribution Sales Agreement, Gross Sales Price											204,200
Equity Distribution Sales Agreement, General Issuance Costs											1,400
Equity Distribution Sales Agreement, Aggregate Compensation to Sales Agents											$ 2,000
Forward Sale Agreement, Equity Offering Shares		1,666,172	2,124,086	1,538,010	250,743	1,692,555	416,853
Shares Issued, Price Per Share		$ 115.46	$ 116.94	$ 108.12	$ 100.35	$ 111.16	$ 106.87
Forward Sale Agreement, Gross Sales Price		$ 194,200	$ 250,900	$ 168,000	$ 25,400	$ 190,100	$ 45,000
Forward Sale Agreement, Aggregate Compensation to Sales Agents		$ 1,900	$ 2,500	$ 1,700	$ 300	$ 1,900	$ 500
Authorization of Repurchase of Common Stock, Remaining										$ 350,000
Options outstanding excluded from the calculation of diluted earnings per share										931,453	1,013,320	523,999
Equity Distribution Program
Options outstanding excluded from the calculation of diluted earnings per share											1,158,917
Forward Contract Indexed to Equity, Settlement, Cash, Amount										$ 1,077,800
Options outstanding excluded from the calculation of diluted earnings per share											1,158,917
Entergy Arkansas [Member]
Dividends, Common Stock, Cash										86,000	$ 50,000	$ 95,000
Entergy Mississippi [Member]
Dividends, Common Stock, Cash												10,000
System Energy [Member]
Dividends, Common Stock, Cash											96,000	80,653
Common Stock [Member]
Dividends, Common Stock, Cash										$ 0	$ 0	$ 0
Forward Contract Indexed to Issuer's Equity, Shares	7,688,419
Stock Issued During Period, Shares, New Issues										7,688,419	1,930,330	0
Common Stock [Member] | System Energy [Member]
Dividends, Common Stock, Cash											$ 0	$ 0