Rate And Regulatory Matters (Details Of Other Regulatory Assets Included In Entergy Corporation And Subsidiaries) (Details) - USD ($)	Dec. 31, 2023	Dec. 31, 2022	Jul. 31, 2022	Jan. 31, 2022	Dec. 31, 2021	Dec. 31, 2018
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	$ 5,669,404,000	$ 6,036,397,000
Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,885,361,000	1,810,281,000
Deferred Fuel Cost - Net Asset		208,600,000
Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,648,852,000	2,056,179,000
Deferred Fuel Cost - Net Asset	192,900,000	327,300,000
Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	579,076,000	519,460,000
Deferred Fuel Cost - Net Asset		143,200,000	$ 291,700,000	$ 100,000,000	$ 121,900,000
Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	182,367,000	202,112,000
Deferred Fuel Cost - Net Asset	10,200,000	14,200,000
Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	596,606,000	578,682,000
Deferred Fuel Cost - Net Asset	139,000,000.0	258,100,000
System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	446,360,000	415,121,000
Asset Retirement Obligation Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,285,000,000	1,103,200,000
Asset Retirement Obligation Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	639,100,000	562,700,000
Asset Retirement Obligation Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	408,700,000	346,300,000
Asset Retirement Obligation Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	6,800,000	6,300,000
Asset Retirement Obligation Costs [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	222,000,000.0	186,100,000
Pension And Postretirement Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,655,500,000	1,968,500,000
Pension And Postretirement Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	536,600,000	597,600,000
Pension And Postretirement Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	412,000,000.0	481,700,000
Pension And Postretirement Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	127,600,000	148,800,000
Pension And Postretirement Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	41,400,000	51,400,000
Pension And Postretirement Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	85,600,000	100,500,000
Pension And Postretirement Costs [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	121,600,000	133,900,000
Storm Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	536,900,000	841,300,000
Storm Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	33,100,000	35,900,000
Storm Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	202,600,000	472,800,000
Storm Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	3,900,000	17,200,000
Storm Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	297,300,000	315,400,000
Removal Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	1,010,700,000	1,058,900,000
Removal Costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	319,700,000	267,100,000
Regulatory Asset	319,700,000	267,100,000
Removal Costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	262,300,000	418,800,000
Regulatory Asset	262,300,000	418,800,000
Removal Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	188,000,000.0	159,400,000
Regulatory Asset	188,000,000.0	159,400,000
Removal Costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	61,100,000	56,300,000
Regulatory Asset	61,100,000	56,300,000
Removal Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	77,500,000	62,900,000
Regulatory Asset	77,500,000	62,900,000
Removal Costs [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	102,100,000	94,400,000
Regulatory Asset	102,100,000	94,400,000
Attorney General Litigation Costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	10,900,000	15,700,000
Attorney General Litigation Costs [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	10,900,000	15,700,000
Neches and Sabine Costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	11,600,000	14,000,000.0
Regulatory Clause Revenues, under-Recovered [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	248,600,000	160,000,000.0
Regulatory Clause Revenues, under-Recovered [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	24,900,000	26,400,000
Regulatory Clause Revenues, under-Recovered [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	192,800,000	111,100,000
Loss on Reacquired Debt [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	63,100,000	68,400,000
Loss on Reacquired Debt [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	19,900,000	21,400,000
Loss on Reacquired Debt [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	23,400,000	25,100,000
Loss on Reacquired Debt [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	10,000,000.0	10,900,000
Loss on Reacquired Debt [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	800,000	1,200,000
Loss on Reacquired Debt [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	8,300,000	9,100,000
Loss on Reacquired Debt [Member] | System Energy [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	700,000	700,000
ANO Fukushima and Flood Barrier costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	3,800,000	5,600,000
Opportunity Sales [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	131,800,000	131,800,000
Opportunity Sales [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	131,800,000	131,800,000				$ 116,000,000
Retired electric meters [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	36,300,000	39,800,000
Retired electric meters [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	18,800,000	21,400,000
Other Regulatory Assets (Liabilities) [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	143,900,000	157,400,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	17,100,000	15,900,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	85,900,000	81,800,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	11,000,000.0	24,800,000
Other Regulatory Assets (Liabilities) [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	24,000,000.0	25,200,000
Other Regulatory Assets (Liabilities) [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	8,600,000	14,400,000
Retired electric and gas meters [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	153,800,000	166,800,000
Retired electric and gas meters [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	83,200,000	88,000,000.0
Retired electric and gas meters [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	15,500,000	17,600,000
Deferred COVID-19 costs [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	118,000,000.0	120,900,000
Deferred COVID-19 costs [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	39,000,000.0	39,000,000.0
Deferred COVID-19 costs [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	47,800,000	47,800,000
Deferred COVID-19 costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	13,000,000.0	13,900,000
Deferred COVID-19 costs [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	8,400,000	10,400,000
Pension & postretirement benefits expense deferral [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	32,700,000	30,600,000
Pension & postretirement benefits expense deferral [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	32,700,000	30,600,000
Qualified Pension Settlement Cost Deferral [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	250,900,000	194,700,000
Qualified Pension Settlement Cost Deferral [Member] | Entergy Arkansas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	84,100,000	67,100,000
Qualified Pension Settlement Cost Deferral [Member] | Entergy Louisiana [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	123,000,000.0	93,900,000
Qualified Pension Settlement Cost Deferral [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	32,000,000.0	24,300,000
Qualified Pension Settlement Cost Deferral [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	11,800,000	9,400,000
Formula rate plan historical year rate adjustment [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	0	18,200,000
Formula rate plan historical year rate adjustment [Member] | Entergy Mississippi [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	0	18,200,000			$ 19,000,000
Advanced Metering System Surcharge [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	20,200,000	0
Rate case depreciation relate back deferral [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	27,600,000	0
Rate case depreciation relate back deferral [Member] | Entergy Texas [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	27,600,000	0
Gas cross-boring costs [Member] | Entergy New Orleans [Member]
Regulatory Asset [Line Items]
Regulatory Asset, Noncurrent	$ 10,900,000	$ 9,900,000