Business Combinations and Asset Acquisitions (Details)	1 Months Ended					9 Months Ended
	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Apr. 30, 2020 USD ($)	Nov. 30, 2018 MW	Jul. 31, 2018	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Jun. 28, 2022 USD ($)	Dec. 31, 2021 USD ($)
Business Combination and Asset Acquisition [Abstract]
Payments to Acquire Productive Assets						$ 106,193,000	$ 36,534,000
Public Utilities, Property, Plant and Equipment, Net						41,718,847,000			$ 42,244,160,000
Business Acquisition [Line Items]
Public Utilities, Property, Plant and Equipment, Net						41,718,847,000			42,244,160,000
Entergy Mississippi [Member]
Business Combination and Asset Acquisition [Abstract]
Payments to Acquire Productive Assets						105,149,000	$ 0
Public Utilities, Property, Plant and Equipment, Net						4,855,403,000			4,580,971,000
Business Acquisition [Line Items]
Public Utilities, Property, Plant and Equipment, Net						4,855,403,000			$ 4,580,971,000
Sunflower Solar facility | Entergy Mississippi [Member]
Business Combination and Asset Acquisition [Abstract]
Capacity Of Power Plant Unit | MW				100
Conditional cap on level of recoverable costs			$ 136,000,000
Business Acquisition [Line Items]
Conditional cap on level of recoverable costs			$ 136,000,000
Capacity Of Power Plant Unit | MW				100
Sunflower Solar facility | Entergy Mississippi [Member] | MS Sunflower Partnership, LLC
Business Combination and Asset Acquisition [Abstract]
Payments to Acquire Productive Assets; Initial Payment		$ 105,000,000
Business Acquisition [Line Items]
Payments to Acquire Productive Assets; Initial Payment		$ 105,000,000
Palisades [Member] | Entergy Wholesale Commodities [Member]
Business Combination and Asset Acquisition [Abstract]
Percentage of Undivided Ownership Interest					100.00%
Proceeds from Divestiture of Businesses	$ 1,000
Gain (Loss) on Disposition of Assets	166,000,000					166,000,000
Gain (Loss) on Disposition of Assets (Net-Of-Tax)	130,000,000
Decommissioning Fund Investments, Fair Value								$ 552,000,000
Asset Retirement Obligation								708,000,000
Public Utilities, Property, Plant and Equipment, Net								0
Business Acquisition [Line Items]
Proceeds from Divestiture of Businesses	1,000
Gain (Loss) on Disposition of Assets	166,000,000					$ 166,000,000
Decommissioning Fund Investments, Fair Value								552,000,000
Public Utilities, Property, Plant and Equipment, Net								0
Percentage of Undivided Ownership Interest					100.00%
Gain (Loss) on Disposition of Assets (Net-Of-Tax)	$ 130,000,000
Asset Retirement Obligation								$ 708,000,000