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Rate And Regulatory Matters (Details Of Other Regulatory Assets Included In Entergy Corporation And Subsidiaries) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2018
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent $ 6,613,256 $ 6,076,549  
Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 1,689,678 1,832,384  
Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 2,776,666 1,726,066  
Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 462,432 467,341  
Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 248,617 266,790  
Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 421,333 524,713  
System Energy [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 395,546 538,963  
Asset Retirement Obligation [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 935,500 1,018,900  
Asset Retirement Obligation [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 489,200 479,300  
Asset Retirement Obligation [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 286,600 299,000  
Asset Retirement Obligation [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 8,400 7,900  
Asset Retirement Obligation [Member] | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 5,400 5,200  
Asset Retirement Obligation [Member] | System Energy [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 144,400 226,300  
Pension And Post Retirement Costs [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 2,327,700 3,027,500  
Pension And Post Retirement Costs [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 640,000 831,500  
Pension And Post Retirement Costs [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 592,700 799,400  
Pension And Post Retirement Costs [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 175,400 242,700  
Pension And Post Retirement Costs [Member] | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 44,900 75,700  
Pension And Post Retirement Costs [Member] | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 96,000 140,100  
Pension And Post Retirement Costs [Member] | System Energy [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 160,300 217,800  
Provision For Storm Damages, Including Hurricane Costs [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 993,600 379,200  
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 39,300 42,700  
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 773,600 94,000  
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 31,200 55,200  
Provision For Storm Damages, Including Hurricane Costs [Member] | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 143,100 187,300  
Removal Costs [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 1,488,800 893,800  
Removal Costs [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 224,300 212,600  
Regulatory Assets 224,300 212,600  
Removal Costs [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 848,200 302,500  
Regulatory Assets 848,200 302,500  
Removal Costs [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 136,800 107,300  
Regulatory Assets 136,800 107,300  
Removal Costs [Member] | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 91,700 63,200  
Regulatory Assets 91,700 63,200  
Removal Costs [Member] | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 98,100 115,300  
Regulatory Assets 98,100 115,300  
Removal Costs [Member] | System Energy [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 89,700 92,900  
Regulatory Assets 89,700 92,900  
Attorney General Litigation Costs [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 20,500 25,300  
Attorney General Litigation Costs [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 20,500 25,300  
Nuclear Generation Development Costs [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 6,800 14,200  
Nuclear Generation Development Costs [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 6,700 14,000  
Neches and Sabine Costs [Member] | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 16,400 18,800  
Regulatory Clause Revenues, under-recovered [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 66,100 66,000  
Regulatory Clause Revenues, under-recovered [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 1,000 12,600  
Regulatory Clause Revenues, under-recovered [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 48,100 44,300  
Unamortized Loss on Reacquired Debt [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 74,700 79,200  
Unamortized Loss on Reacquired Debt [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 23,100 24,700  
Unamortized Loss on Reacquired Debt [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 26,900 26,600  
Unamortized Loss on Reacquired Debt [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 12,200 13,500  
Unamortized Loss on Reacquired Debt [Member] | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 1,600 1,900  
Unamortized Loss on Reacquired Debt [Member] | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 9,800 10,500  
Unamortized Loss on Reacquired Debt [Member] | System Energy [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 1,100 2,000  
ANO Fukushima and Flood Barrier costs [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 7,300 9,100  
Opportunity Sales [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 131,800 131,800  
Opportunity Sales [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 131,800 131,800 $ 116,000
Retired electric meters [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 43,400 46,900  
Retired electric meters [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 91,700 96,400  
Retired electric meters [Member] | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 23,700 26,000  
Other Regulatory Assets (Liabilities) [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 123,100 125,900  
Other Regulatory Assets (Liabilities) [Member] | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 17,900 21,200  
Other Regulatory Assets (Liabilities) [Member] | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 39,000 40,000  
Other Regulatory Assets (Liabilities) [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 13,200 5,100  
Other Regulatory Assets (Liabilities) [Member] | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 36,800 29,600  
Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 7,900 10,000  
Retired electric and gas meters [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 179,400 192,100  
Retired electric and gas meters [Member] | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 19,600 21,700  
Deferred COVID-19 costs      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 133,100 105,700  
Deferred COVID-19 costs | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 32,600 10,500  
Deferred COVID-19 costs | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 56,300 48,800  
Deferred COVID-19 costs | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 15,000 19,200  
Deferred COVID-19 costs | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 17,400 14,300  
Deferred COVID-19 costs | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 11,700 12,900  
New Orleans Power Station deferral | Entergy New Orleans [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 4,000    
Pension & post retirement benefits expense deferral | Entergy Texas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 14,600 3,800  
Qualified Pension Settlement Cost Deferral      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 113,200 16,900  
Qualified Pension Settlement Cost Deferral | Entergy Arkansas [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 39,800 9,500  
Qualified Pension Settlement Cost Deferral | Entergy Louisiana [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 55,000 5,400  
Qualified Pension Settlement Cost Deferral | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 13,800 2,000  
Formula rate plan historical year rate adjustment [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent 19,000 0  
Formula rate plan historical year rate adjustment [Member] | Entergy Mississippi [Member]      
Regulatory Assets [Line Items]      
Regulatory Assets, Noncurrent $ 19,000 $ 0