Preferred Equity (Narratives) (Details) - USD ($)	1 Months Ended						9 Months Ended	12 Months Ended
	Nov. 30, 2021	Sep. 30, 2019	Nov. 30, 2018	Nov. 30, 2017	Oct. 31, 2015	Dec. 31, 2013	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	May 01, 2021	Apr. 30, 2021	Sep. 30, 2020
Preferred Equity [Line Items]
Preferred Stock, Value, Issued								$ 0	$ 0
Payments for Repurchase of Preferred Stock and Preference Stock								0	0	$ 50,000,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs								3,438,000		$ 7,000
Stockholders' Equity Attributable to Noncontrolling Interest								$ 68,110,000	$ 35,000,000
Preferred Stock, Shares Authorized								1,000,000	0		1,000,000
Common Stock, Shares Authorized								499,000,000	500,000,000		499,000,000	500,000,000
Common Stock, Par or Stated Value Per Share								$ 0.01	$ 0.01		$ 0.01
Entergy Arkansas [Member]
Preferred Equity [Line Items]
Members' Equity Attributable to Noncontrolling Interest								$ 33,110,000	$ 0
Preferred Stock, Shares Authorized								0	0
Entergy Arkansas [Member] | AR Searcy Partnership, LLC
Preferred Equity [Line Items]
Members' Equity Attributable to Noncontrolling Interest								$ 33,110,000	$ 0
Entergy Texas [Member]
Preferred Equity [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest								$ 38,750,000	$ 35,000,000
Preferred Stock, Shares Authorized								1,550,000	1,400,000
Common Stock, Shares Authorized								200,000,000	200,000,000
Equity Method Investments								$ 300,000	$ 349,000
Preferred Stock, 8.75% Rate [Member] | Entergy Finance Holding Inc [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate						8.75%
Preferred Stock, Shares Authorized						250,000		250,000	250,000
Temporary Equity, Par Value						$ 100
Temporary Equity, Redemption Price Per Share								$ 100
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs								$ 751,000
Preferred Stock, Cumulative $1,000 Par Value 6.75% Series [Domain] | Entergy Utility Holding Company LLC [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate			6.75%
Temporary Equity, Par Value			$ 1,000
Temporary Equity, Redemption Price Per Share								$ 1,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs								$ 1,630,000
Preferred Units, Authorized			75,000					75,000	75,000
Preferred Stock, Cumulative One Thousand Dollar Par Value, Seven Point Five Percent Series [Member] | Entergy Utility Holding Company LLC [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate					7.50%
Temporary Equity, Par Value					$ 1,000
Temporary Equity, Redemption Price Per Share								$ 1,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs								$ 2,575,000
Preferred Units, Authorized					110,000			110,000	110,000
Preferred Stock, Cumulative $1,000 Par Value 6.25% Series [Domain] | Entergy Utility Holding Company LLC [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate				6.25%
Temporary Equity, Par Value				$ 1,000
Temporary Equity, Redemption Price Per Share								$ 1,000
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs								$ 634,000
Preferred Units, Authorized				15,000				15,000	15,000
Preferred Stock, Five Point Three Seven Five Percent, Series A [Member] [Domain] | Entergy Texas [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate		5.375%
Preferred Stock, Shares Authorized													1,400,000
Preferred Stock, Five Point One Zero Percent, Series B | Entergy Texas [Member]
Preferred Equity [Line Items]
Preferred stock/preferred membership interests rate	5.10%
Preferred Stock, Shares Authorized	150,000
Stockholders' Equity Attributable to Noncontrolling Interest								$ 0	$ 0
Preferred Stock, Shares Authorized								150,000	0
Preferred Stock, Five Point Three Seven Five Percent, Series A [Member] | Entergy Texas [Member]
Preferred Equity [Line Items]
Preferred Stock, Value, Issued		$ 35,000,000					$ 35,000,000						$ 35,000,000
Preferred stock/preferred membership interests rate							5.375%
Preferred Stock, Liquidation Preference Per Share		$ 25					$ 25						$ 25
Preferred Stock, Call Price per Share								$ 0
Stockholders' Equity Attributable to Noncontrolling Interest								$ 35,000,000	$ 35,000,000
Preferred Stock, Shares Authorized								1,400,000	1,400,000
Preferred Stock, Five Point Three Seven Five Percent, Series A [Member] | Entergy Texas [Member] | On or after October 15, 2024
Preferred Equity [Line Items]
Preferred Stock, Call Price per Share									$ 25
Preferred Stock, Five Point One Zero Percent, Series B | Entergy Texas [Member]
Preferred Equity [Line Items]
Preferred Stock, Value, Issued	$ 3,750,000
Preferred Stock, Liquidation Preference Per Share	$ 25
Preferred Stock, Call Price per Share								$ 25.50
Stockholders' Equity Attributable to Noncontrolling Interest								$ 3,750,000	$ 0
Preferred Stock, Shares Authorized								150,000	0
Preferred Stock, Five Point One Zero Percent, Series B | Entergy Texas [Member] | Prior to November 1, 2026
Preferred Equity [Line Items]
Preferred Stock, Call Price per Share								$ 25.50
Preferred Stock, Five Point One Zero Percent, Series B | Entergy Texas [Member] | On or after November 1, 2026
Preferred Equity [Line Items]
Preferred Stock, Call Price per Share								$ 25