Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	1 Months Ended		3 Months Ended	12 Months Ended
	Mar. 31, 2018 $ / kWh	Mar. 31, 2017 $ / kWh	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) $ / kWh shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares
Income Tax Expense (Benefit)				$ (690,535)	$ (38,978)	$ 191,374
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment				$ 193,000	$ 208,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares				1,179,962	931,453	1,013,320
Asset Impairment Charges				$ 42,679	$ (163,464)	$ 263,625
Regulatory Liability, Noncurrent				$ 3,116,926	$ 2,324,590
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service				2.90%	2.80%	2.70%
Equity Distribution Program [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares				1,762,709	1,158,917	1,158,917
Utility [Member]
Income Tax Expense (Benefit)				$ (374,847)	$ (34,263)	$ 264,209
Asset Impairment Charges				79,962	0	0
Entergy Louisiana [Member]
Income Tax Expense (Benefit)				$ (205,781)	$ (162,853)	$ 120,409
Depreciation Rate On Average Depreciable Property				2.60%	2.40%	2.40%
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment				$ 187,200	$ 202,200
Percentage Interest in River Bend				30.00%
Percentage portion of River Bend plant costs, generation, revenues, and expenses operated under the Louisiana retail deregulated portion of River Bend				15.00%
Rate At Which Electricity Sold To Retail Customers | $ / kWh				0.046
Limit Above Which Incremental Revenue Shared Between Customers and Shareholders | $ / kWh				0.046
Regulatory Liability, Noncurrent				$ 1,407,689	1,037,962
Entergy Texas [Member]
Income Tax Expense (Benefit)				$ 62,872	$ 50,621	$ 25,526
Depreciation Rate On Average Depreciable Property				4.00%	3.10%	3.20%
Regulatory Liability, Noncurrent				$ 43,013	$ 45,247
Entergy Arkansas [Member]
Income Tax Expense (Benefit)				$ (99,210)	$ 80,896	$ 75,195
Depreciation Rate On Average Depreciable Property				2.70%	2.70%	2.70%
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment				$ 100	$ 100
Rate At Which Electricity Sold To Retail Customers | $ / kWh	0.01547	0.01164
Asset Impairment Charges				78,434	0	$ 0
Regulatory Liability, Noncurrent				759,181	475,758
Entergy Arkansas [Member] | Utility [Member]
Asset Impairment Charges			$ 78,000
Entergy Mississippi [Member]
Income Tax Expense (Benefit)				$ 54,364	$ 54,864	$ 45,323
Depreciation Rate On Average Depreciable Property				3.60%	3.60%	3.60%
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment				$ 500	$ 500
Regulatory Liability, Noncurrent				33,696	79,865
Entergy New Orleans [Member]
Income Tax Expense (Benefit)				$ (189,973)	$ 24,277	$ 5,936
Depreciation Rate On Average Depreciable Property				3.30%	3.20%	3.20%
Regulatory Liability, Noncurrent				$ 90,434	$ 20,735
System Energy [Member]
Income Tax Expense (Benefit)				$ 32,032	$ (92,828)	$ (1,977)
Depreciation Rate On Average Depreciable Property				1.60%	2.00%	1.90%
Regulatory Liability, Noncurrent				$ 782,912	$ 665,024