Acquisitions, Held for Sale, and Dispositions (Narrative) (Details)	1 Months Ended											12 Months Ended
	Dec. 31, 2024 USD ($)	Nov. 30, 2024 USD ($)	Sep. 30, 2024 USD ($)	Aug. 31, 2024 USD ($)	Feb. 29, 2024 USD ($)	Oct. 31, 2023 USD ($)	Apr. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	May 31, 2022 USD ($)	Apr. 30, 2020 USD ($)	Jul. 31, 2018	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Oct. 28, 2023 USD ($)	Aug. 31, 2022 MW	Jun. 28, 2022 USD ($)	Sep. 30, 2020 MW	Jun. 30, 2020 MW	Nov. 30, 2018 MW
Business Acquisition [Line Items]
Proceeds from Sale of Productive Assets												$ 0	$ 11,000,000	$ (1,195,000)
Asset Retirement Obligation	$ 4,713,400,000											4,713,400,000	4,505,800,000	4,271,500,000
Public Utilities, Property, Plant and Equipment, Net	$ 47,422,950,000											47,422,950,000	43,834,329,000
Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Business Acquisition [Line Items]
Disposal Groups, Percentage of shared net proceeds	50.00%
Maximum [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Business Acquisition [Line Items]
Disposal Groups, Recoverable transaction and cooperation costs	$ 19,000,000
Entergy Arkansas [Member]
Business Acquisition [Line Items]
Asset Retirement Obligation	1,691,600,000											1,691,600,000	1,560,100,000	1,472,700,000
Public Utilities, Property, Plant and Equipment, Net	10,674,012,000											10,674,012,000	9,373,934,000
Entergy Arkansas [Member] | Walnut Bend Solar facility [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets			$ 16,000,000		$ 170,000,000
Generation Capacity | MW																			100
Entergy Arkansas [Member] | West Memphis Solar facility [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets		$ 192,000,000		$ 48,000,000
Generation Capacity | MW																		180
Entergy Arkansas [Member] | Driver Solar facility [Member]
Business Acquisition [Line Items]
Payments to Acquire Productive Assets		$ 85,000,000		$ 308,000,000
Generation Capacity | MW																250
Entergy Mississippi [Member]
Business Acquisition [Line Items]
Proceeds from Sale of Productive Assets												818,000	0	0
Asset Retirement Obligation	25,100,000											25,100,000	8,200,000	7,800,000
Public Utilities, Property, Plant and Equipment, Net	5,836,591,000											5,836,591,000	5,248,453,000
Entergy Mississippi [Member] | Sunflower Solar facility [Member]
Business Acquisition [Line Items]
Conditional cap on level of recoverable costs										$ 136,000,000
Payments to Acquire Productive Assets						$ 5,000,000	$ 30,000,000		$ 105,000,000
Generation Capacity | MW																				100
Entergy New Orleans [Member]
Business Acquisition [Line Items]
Asset Retirement Obligation	4,900,000											4,900,000	4,600,000	0
Public Utilities, Property, Plant and Equipment, Net	1,453,408,000											1,453,408,000	1,615,526,000
Entergy New Orleans [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy New Orleans natural gas distribution business [Member]
Business Acquisition [Line Items]
Disposal Groups, Nonrecoverable assets that will not transfer in sale	19,000,000											19,000,000
Disposal Groups, Aggregate liability for transaction costs for initial phase termination															$ 7,500,000
Disposal Groups, Aggregate liability for transaction costs for second phase termination															$ 12,500,000
Disposal Groups, Termination fee as a percentage of the base purchase price for initial phase termination															7.00%
Disposal Groups, Termination fee as a percentage of the base purchase price for second phase termination															10.00%
Disposal Group, Including Discontinued Operation, Consideration															$ 285,500,000
Entergy Louisiana [Member]
Business Acquisition [Line Items]
Proceeds from Sale of Productive Assets												2,109,000	0	5,000,000
Asset Retirement Obligation	1,842,900,000											1,842,900,000	1,836,200,000	$ 1,736,800,000
Public Utilities, Property, Plant and Equipment, Net	$ 19,024,679,000											$ 19,024,679,000	$ 18,471,693,000
Entergy Louisiana [Member] | Disposal Group, Held-for-Sale, Not Discontinued Operations [Member] | Entergy Louisiana natural gas distribution business [Member]
Business Acquisition [Line Items]
Disposal Groups, Aggregate liability for transaction costs for initial phase termination															7,500,000
Disposal Groups, Aggregate liability for transaction costs for second phase termination															$ 12,500,000
Disposal Groups, Termination fee as a percentage of the base purchase price for initial phase termination															7.00%
Disposal Groups, Termination fee as a percentage of the base purchase price for second phase termination															10.00%
Disposal Group, Including Discontinued Operation, Consideration															$ 198,000,000
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