Acquisitions, Dispositions, and Impairment of Long-Lived Assets Narrative (Details)	1 Months Ended														6 Months Ended	12 Months Ended
	Feb. 29, 2024 USD ($)	Oct. 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2021 USD ($) MW	May 31, 2021 USD ($)	Jun. 30, 2020 MW	Apr. 30, 2020 USD ($)	Apr. 30, 2019	Mar. 31, 2019 MW	Nov. 30, 2018 MW	Jul. 31, 2018	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 28, 2022 USD ($)	May 28, 2021 USD ($)
Business Acquisition [Line Items]
Payments to Acquire Productive Assets																$ 35,094,000	$ 106,193,000	$ 168,304,000
Asset Retirement Obligation						$ 4,757,100,000										4,505,800,000	4,271,500,000	4,757,100,000
Public Utilities, Property, Plant and Equipment, Net																43,834,329,000	42,477,124,000
Entergy Arkansas [Member]
Business Acquisition [Line Items]
Asset Retirement Obligation						1,390,400,000										1,560,100,000	1,472,700,000	1,390,400,000
Public Utilities, Property, Plant and Equipment, Net																9,373,934,000	8,941,958,000
Entergy Mississippi [Member]
Business Acquisition [Line Items]
Asset Retirement Obligation						10,300,000										8,200,000	7,800,000	10,300,000
Public Utilities, Property, Plant and Equipment, Net																5,248,453,000	4,985,254,000
Entergy Texas [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets																0	0	36,534,000
Proceeds from Sale of Productive Assets																11,000,000	0	67,920,000
Asset Retirement Obligation						8,500,000										11,700,000	11,100,000	$ 8,500,000
Public Utilities, Property, Plant and Equipment, Net																$ 6,425,128,000	5,613,200,000
Palisades [Member]
Business Acquisition [Line Items]
Decommissioning Fund Investments, Fair Value																			$ 552,000,000
Proceeds from Sale of Productive Assets				$ 1,000
Asset Retirement Obligation																			708,000,000
Percentage of Undivided Ownership Interest														100.00%
Gain (Loss) on Disposition of Assets				166,000,000
Gain (Loss) on Disposition of Assets (Net-Of-Tax)				$ 130,000,000
Public Utilities, Property, Plant and Equipment, Net																			$ 0
Montgomery County Power Station [Member] | Entergy Texas [Member]
Business Acquisition [Line Items]
Proceeds from Sale of Productive Assets							$ 68,000,000
Percentage of Undivided Ownership Interest							7.56%
Searcy Solar Facility [Member] | Entergy Arkansas [Member]
Business Acquisition [Line Items]
Capacity Of Power Plant Unit | MW												100
Searcy Solar Facility [Member] | Entergy Arkansas [Member] | AR Searcy Partnership, LLC [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets						$ 133,000,000											$ 1,000,000
Indian Point Energy Center [Member]
Business Acquisition [Line Items]
Decommissioning Fund Investments, Fair Value																				$ 2,387,000,000
Asset Retirement Obligation																				$ 1,996,000,000
Percentage of Undivided Ownership Interest											100.00%
Gain (Loss) on Disposition of Assets								$ 340,000,000
Gain (Loss) on Disposition of Assets (Net-Of-Tax)								$ 268,000,000
Hardin County Peaking Facility [Member] | Entergy Texas [Member]
Business Acquisition [Line Items]
Capacity Of Power Plant Unit | MW							147
Payments to Acquire Productive Assets							$ 37,000,000
Sunflower Solar facility [Member] | Entergy Mississippi [Member]
Business Acquisition [Line Items]
Conditional cap on level of recoverable costs										$ 136,000,000
Capacity Of Power Plant Unit | MW													100
Sunflower Solar facility [Member] | Entergy Mississippi [Member] | MS Sunflower Partnership, LLC [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets		$ 5,000,000	$ 30,000,000		$ 105,000,000
Walnut Bend Solar facility | Entergy Arkansas [Member]
Business Acquisition [Line Items]
Capacity Of Power Plant Unit | MW									100
Walnut Bend Solar facility | Entergy Arkansas [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets	$ 170,000,000
Expected payments to acquire productive assets															$ 20,000,000