Summary Of Significant Accounting Policies (Narrative) (Details) $ in Thousands	1 Months Ended		12 Months Ended
	Mar. 31, 2018 $ / kWh	Mar. 31, 2017 $ / kWh	Dec. 31, 2022 USD ($) $ / kWh shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares
Income Tax Expense (Benefit)			$ (38,978)	$ 191,374	$ (121,506)
Accumulated depreciation of non-utility property			208,000	200,000
Construction expenditures in accounts payable			$ 459,000	$ 723,000
Options outstanding excluded from the calculation of diluted earnings per share | shares			931,453	1,013,320	523,999
Incremental Common Shares Attributable to Share-based Payment Arrangements | shares			400,000	400,000	500,000
Asset Retirement Obligations, Noncurrent			$ 4,271,531	$ 4,757,084
Asset Impairment Charges			(163,464)	263,625	$ 26,623
Asset Write-Offs, Impairments, And Related Charges			(163,464)	263,599	26,379
Assets, Fair Value Disclosure			4,681,000	6,005,000
Property, Plant and Equipment, Net			366,405	357,576
Decommissioning			224,076	306,411	$ 381,861
Regulatory Liability, Noncurrent			$ 2,324,590	$ 2,643,845
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service			2.80%	2.70%	2.80%
Deferred Tax Equity Partnership Earnings
Regulatory Liability, Noncurrent			$ 43,800	$ 18,100
Entergy Wholesale Commodities [Member]
Income Tax Expense (Benefit)			54,465	(25,381)	$ 104,937
Asset Write-Offs, Impairments, And Related Charges			1,000	264,000	19,000
Asset Write-Offs, Impairments, And Related Charges			$ (163,464)	$ 263,625	$ 26,623
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service			6.60%	7.50%	12.70%
Utility [Member]
Income Tax Expense (Benefit)			$ (34,263)	$ 264,209	$ (282,311)
Asset Write-Offs, Impairments, And Related Charges			$ 0	$ 0	$ 0
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service			2.70%	2.70%	2.70%
Entergy Louisiana [Member]
Income Tax Expense (Benefit)			$ (162,853)	$ 120,409	$ (382,324)
Depreciation rates on average depreciable property			2.40%	2.40%	2.40%
Accumulated depreciation of non-utility property			$ 202,200	$ 188,500
Construction expenditures in accounts payable			$ 154,300	507,900
Percentage Interest in River Bend			30.00%
Portion of percentage of interest of River Bend plant costs, generation, revenues and expenses operating 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 ratepayers and shareholders | $ / kWh			0.046
Asset Retirement Obligations, Noncurrent			$ 1,736,801	1,653,198
Assets, Fair Value Disclosure			2,102,600	2,144,500
Property, Plant and Equipment, Net			350,723	337,247
Decommissioning			72,122	68,575	$ 65,225
Regulatory Liability, Noncurrent			1,037,962	1,042,597
Entergy Texas [Member]
Income Tax Expense (Benefit)			$ 50,621	$ 25,526	$ 3,042
Depreciation rates on average depreciable property			3.10%	3.20%	3.10%
Construction expenditures in accounts payable			$ 68,900	$ 73,100
Asset Retirement Obligations, Noncurrent			11,121	8,520
Assets, Fair Value Disclosure			14,000	27,400
Property, Plant and Equipment, Net			376	376
Regulatory Liability, Noncurrent			45,247	37,060
Entergy Arkansas [Member]
Income Tax Expense (Benefit)			$ 80,896	$ 75,195	$ 47,777
Depreciation rates on average depreciable property			2.70%	2.70%	2.60%
Accumulated depreciation of non-utility property			$ 100
Construction expenditures in accounts payable			93,200	$ 35,600
Rate At Which Electricity Sold To Retail Customers | $ / kWh	0.01547	0.01164
Asset Retirement Obligations, Noncurrent			1,472,736	1,390,410
Assets, Fair Value Disclosure			1,213,600	1,445,500
Decommissioning			82,326	77,696	$ 73,319
Regulatory Liability, Noncurrent			475,758	743,314
Entergy Arkansas [Member] | Deferred Tax Equity Partnership Earnings
Regulatory Liability, Noncurrent			22,400	18,100
Entergy Mississippi [Member]
Income Tax Expense (Benefit)			$ 54,864	$ 45,323	$ 27,190
Depreciation rates on average depreciable property			3.60%	3.60%	3.50%
Accumulated depreciation of non-utility property			$ 500	$ 500
Construction expenditures in accounts payable			59,500	26,500
Asset Retirement Obligations, Noncurrent			7,797	10,315
Assets, Fair Value Disclosure			51,100	96,800
Property, Plant and Equipment, Net			4,512	4,527
Regulatory Liability, Noncurrent			79,865	49,313
Entergy Mississippi [Member] | Deferred Tax Equity Partnership Earnings
Regulatory Liability, Noncurrent			21,400	0
Entergy New Orleans [Member]
Income Tax Expense (Benefit)			$ 24,277	$ 5,936	$ (4,207)
Depreciation rates on average depreciable property			3.20%	3.20%	3.10%
Construction expenditures in accounts payable			$ 11,200
Asset Retirement Obligations, Noncurrent			0	$ 4,032
Assets, Fair Value Disclosure			82,400	44,900
Property, Plant and Equipment, Net			1,050	1,016
Public Utilities, Property, Plant and Equipment, Disclosure of Composite Depreciation Rate for Plants in Service					2.00%
System Energy [Member]
Income Tax Expense (Benefit)			$ (92,828)	$ (1,977)	$ 20,543
Depreciation rates on average depreciable property			2.00%	1.90%	2.10%
Construction expenditures in accounts payable			$ 29,000	$ 23,400
Asset Retirement Obligations, Noncurrent			1,042,461	1,007,603
Assets, Fair Value Disclosure			1,145,800	1,474,400
Decommissioning			40,235	38,693	$ 37,181
Regulatory Liability, Noncurrent			$ 665,024	$ 744,944
Entergy Wholesale Commodities [Member] | RS Cogen [Member]
Equity Method Investment, Ownership Percentage			50.00%