Rate And Regulatory Matters (Schedule of Regulatory Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2018
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	$ 5,255,509	$ 5,669,404
Regulatory Asset, Noncurrent and Noncurrent Assets Held For Sale [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	5,290,900
Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,700,110	1,885,361
Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,637,967	1,648,852
Entergy Louisiana [Member] | Regulatory Asset, Noncurrent and Noncurrent Assets Held For Sale [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,646,900
Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	525,847	579,076
Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	133,261	182,367
Entergy New Orleans [Member] | Regulatory Asset, Noncurrent and Noncurrent Assets Held For Sale [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	157,000
Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	549,708	596,606
System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	426,494	446,360
Asset Retirement Obligation Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,358,700	1,285,000
Asset Retirement Obligation Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	693,000	639,100
Asset Retirement Obligation Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	421,500	408,700
Asset Retirement Obligation Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	9,400	6,800
Asset Retirement Obligation Costs [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	224,800	222,000
Storm Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	547,300	536,900
Storm Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	29,800	33,100
Storm Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	226,600	202,600
Storm Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	4,000	3,900
Storm Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	286,500	297,300
Removal Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,107,600	1,010,700
Removal Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	337,900	319,700
Removal Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	323,200	262,300
Removal Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	184,800	188,000
Removal Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	62,500	61,100
Removal Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	102,300	77,500
Removal Costs [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	96,900	102,100
Attorney General Litigation Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	6,000	10,900
Neches and Sabine Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	9,200	11,600
Regulatory Clause Revenues, under-Recovered [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	195,100	248,600
Regulatory Clause Revenues, under-Recovered [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	13,600	24,900
Regulatory Clause Revenues, under-Recovered [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	162,500	192,800
Loss on Reacquired Debt [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	57,900	63,100
Loss on Reacquired Debt [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	18,600	19,900
Loss on Reacquired Debt [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	21,700	23,400
Loss on Reacquired Debt [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	9,100	10,000
Loss on Reacquired Debt [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	500	800
Loss on Reacquired Debt [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	7,600	8,300
Loss on Reacquired Debt [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	400	700
ANO Fukushima and Flood Barrier costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	2,100	3,800
Opportunity Sales [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	0	131,800
Opportunity Sales [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	0	131,800	$ 116,000
Retired electric meters [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	32,800	36,300
Retired electric meters [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	10,900	18,800
Other Regulatory Assets (Liabilities) [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	99,700	134,600
Other Regulatory Assets (Liabilities) [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	12,600	17,100
Other Regulatory Assets (Liabilities) [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	48,500	85,900
Other Regulatory Assets (Liabilities) [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	12,800	11,000
Other Regulatory Assets (Liabilities) [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	20,700	24,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	15,600	17,000
Retired electric and gas meters [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	135,700	153,800
Retired electric and gas meters [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	78,500	83,200
Retired electric and gas meters [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	13,500	15,500
Deferred COVID-19 costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	104,000	118,000
Deferred COVID-19 costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	35,100	39,000
Deferred COVID-19 costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	47,800	47,800
Deferred COVID-19 costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	10,200	13,000
Pension & postretirement benefits expense deferral [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	15,000	32,700
Pension & postretirement benefits expense deferral [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	15,000	32,700
Qualified Pension Settlement Cost Deferral [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	227,100	250,900
Qualified Pension Settlement Cost Deferral [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	75,800	84,100
Qualified Pension Settlement Cost Deferral [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	111,400	123,000
Qualified Pension Settlement Cost Deferral [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	29,100	32,000
Qualified Pension Settlement Cost Deferral [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	10,800	11,800
Formula rate plan historical year rate adjustment [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	15,500	0
Formula rate plan historical year rate adjustment [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	15,500	0
Advanced Metering System Surcharge [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	39,700	20,200
Advanced Metering System Surcharge [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	39,700	20,200
Rate case depreciation relate back deferral [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	0	27,600
Rate case depreciation relate back deferral [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	0	27,600
Gas cross-boring costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	11,900	10,900
Pension and Other Postretirement Plans Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,387,600	1,655,500
Pension and Other Postretirement Plans Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	433,300	536,600
Pension and Other Postretirement Plans Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	367,700	412,000
Pension and Other Postretirement Plans Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	112,100	127,600
Pension and Other Postretirement Plans Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	22,900	41,400
Pension and Other Postretirement Plans Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	62,900	85,600
Pension and Other Postretirement Plans Costs [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	$ 104,400	$ 121,600