Retirement, Other Postretirement Benefits, And Defined Contribution Plans Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent		$ 648,413	$ 1,213,555
Liability, Defined Benefit Plan, Current		$ 59,508	$ 104,845
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate		4.75%	4.75%
Defined Benefit Plan, Plan Assets, Payment for Settlement		$ (410,110)	$ (604,753)
Regulatory Asset, Noncurrent		5,669,404	6,036,397
Pension & postretirement benefits expense deferral [Member]
Defined Benefit Plan Disclosure [Line Items]
Regulatory Asset, Noncurrent		32,700	30,600
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		77,900	140,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		43,800	30,900	$ 28,600
Defined Benefit Plan, Benefit Obligation		88,600	152,400
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		3,900	8,700
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		29,700	56,800
Common Stock Issued, Employee Stock Trust		35,000
Settlement Charge Associated With Out Of Plan Payment Of Lump Sum Benefits		27,900	12,200	10,900
Defined Benefit Plan Benefit Obligation, Current		13,800	62,400
Defined Benefit Plan Benefit Obligation, Non-Current		74,800	90,000
Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		5,460,601	5,242,098	6,993,110
Defined Benefit Plan, Benefit Obligation		5,915,404	6,166,106	8,409,620
Liability, Defined Benefit Plan, Noncurrent		454,803	924,008
Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		5,460,601	5,242,098
Defined Benefit Plan, Accumulated Benefit Obligation		5,600,000	5,700,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		253,739	390,458	471,815
Defined Contribution Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Cost		$ 65,100	62,100	62,300
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	5.00%	6.00%
Defined Contribution Plan Discretionary Employer Matching Contribution Percent	4.00%
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		$ 673,141	623,824	771,319
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		(13,810)	(12,597)	(25,580)
Defined Benefit Plan, Benefit Obligation		837,644	865,854	1,189,682
Liability, Defined Benefit Plan, Noncurrent		118,797	199,546
Liability, Defined Benefit Plan, Current		45,706	42,484
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		(150,977)	(178,823)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		(22,558)	(25,550)	(33,069)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		45,900
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		270,000
Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent		8,901	118,020
Defined Benefit Plan, Plan Assets, Payment for Settlement		(68,700)	(96,000)
Regulatory Asset, Noncurrent		1,885,361	1,810,281
Entergy Arkansas [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		1,935	2,192
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		637	282	343
Defined Benefit Plan, Benefit Obligation		2,313	2,433
Liability, Defined Benefit Plan, Noncurrent		2,037	2,199
Liability, Defined Benefit Plan, Current		276	234
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		379
Entergy Arkansas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		991,894	961,178	1,302,588
Defined Benefit Plan, Benefit Obligation		1,117,585	1,168,098	1,579,346
Liability, Defined Benefit Plan, Noncurrent		125,691	206,920
Entergy Arkansas [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		1,048,901	1,008,152
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		49,450	74,774	92,919
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		274,814	255,117	315,495
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		(1,879)	(5,665)	(11,084)
Defined Benefit Plan, Benefit Obligation		155,987	164,018	221,183
Liability, Defined Benefit Plan, Current		0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		2,096	1,885	(1,121)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		529
Entergy Arkansas [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		55,112
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent		271,928	389,631
Defined Benefit Plan, Plan Assets, Payment for Settlement		(103,100)	(146,600)
Regulatory Asset, Noncurrent		1,648,852	2,056,179
Entergy Louisiana [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		2,494	1,197
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		99	102	307
Defined Benefit Plan, Benefit Obligation		2,574	1,197
Liability, Defined Benefit Plan, Noncurrent		2,266	1,013
Liability, Defined Benefit Plan, Current		308	184
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		67	5
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			1	155
Entergy Louisiana [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		1,058,711	1,035,574	1,446,658
Defined Benefit Plan, Benefit Obligation		1,173,283	1,256,422	1,736,396
Liability, Defined Benefit Plan, Noncurrent		114,572	220,848
Entergy Louisiana [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		1,085,318	1,146,561
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		69,539	100,633	117,150
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		1,449	6,029	5,410
Defined Benefit Plan, Benefit Obligation		170,139	183,126	253,031
Liability, Defined Benefit Plan, Noncurrent		155,090	167,770
Liability, Defined Benefit Plan, Current		15,049	15,356
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		(88,354)	(94,323)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		(3,804)	(4,630)	(4,920)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		15,049
Entergy Louisiana [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		48,401
Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent		0	23,742
Defined Benefit Plan, Plan Assets, Payment for Settlement		(31,400)	(48,000)
Regulatory Asset, Noncurrent		579,076	519,460
Entergy Mississippi [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		3,187	3,594
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		808	321	365
Defined Benefit Plan, Benefit Obligation		3,369	3,830
Liability, Defined Benefit Plan, Noncurrent		2,895	3,616
Liability, Defined Benefit Plan, Current		474	214
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement		453	2
Entergy Mississippi [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		280,260	265,736	356,424
Defined Benefit Plan, Benefit Obligation		295,942	320,994	448,858
Liability, Defined Benefit Plan, Noncurrent		15,682	55,258
Entergy Mississippi [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		273,338	292,596
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		19,715	29,234	33,826
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		85,662	79,496	97,888
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		(2,538)	(4,370)	(4,677)
Defined Benefit Plan, Benefit Obligation		41,344	44,365	61,001
Liability, Defined Benefit Plan, Current		0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		(955)	(1,772)	(1,775)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		178
Entergy Mississippi [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		14,980
Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement		(5,300)	(16,200)
Regulatory Asset, Noncurrent		182,367	202,112
Entergy New Orleans [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		814	719
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		132	114	30
Defined Benefit Plan, Benefit Obligation		1,034	1,024
Liability, Defined Benefit Plan, Noncurrent		928	992
Liability, Defined Benefit Plan, Current		106	32
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Entergy New Orleans [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		117,923	119,710	172,366
Defined Benefit Plan, Benefit Obligation		133,950	140,436	195,380
Liability, Defined Benefit Plan, Noncurrent		16,027	20,726
Entergy New Orleans [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		125,878	128,499
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		3,678	9,779	9,859
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		100,536	91,140	111,137
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		(4,318)	(6,720)	(6,420)
Defined Benefit Plan, Benefit Obligation		21,685	23,971	31,866
Liability, Defined Benefit Plan, Current		0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		(916)	(916)	(916)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		205
Entergy New Orleans [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		4,931
Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement		(29,400)	(48,900)
Regulatory Asset, Noncurrent		596,606	578,682
Entergy Texas [Member] | Pension & postretirement benefits expense deferral [Member]
Defined Benefit Plan Disclosure [Line Items]
Regulatory Asset, Noncurrent		32,700	30,600
Entergy Texas [Member] | Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		3,701	3,776
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		253	1,320	615
Defined Benefit Plan, Benefit Obligation		3,762	3,850
Liability, Defined Benefit Plan, Noncurrent		3,314	3,402
Liability, Defined Benefit Plan, Current		448	448
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement			1,000	172
Entergy Texas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		222,496	226,417	341,915
Defined Benefit Plan, Benefit Obligation		239,984	265,565	371,802
Liability, Defined Benefit Plan, Noncurrent		17,488	39,148
Entergy Texas [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		225,379	245,428
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		15,718	29,835	18,617
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		161,318	148,799	182,285
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		(8,827)	(11,078)	(10,883)
Defined Benefit Plan, Benefit Obligation		51,617	53,482	71,961
Liability, Defined Benefit Plan, Current		0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		(4,371)	(4,371)	(3,742)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		156
Entergy Texas [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		8,272
System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent		19,491	40,750
Defined Benefit Plan, Plan Assets, Payment for Settlement		(16,700)	(23,500)
Regulatory Asset, Noncurrent		446,360	415,121
System Energy [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		255,443	240,392	312,060
Defined Benefit Plan, Benefit Obligation		286,558	288,302	394,794
Liability, Defined Benefit Plan, Noncurrent		31,115	47,910
System Energy [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Accumulated Benefit Obligation		267,432	269,583
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		12,627	21,702	29,348
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		45,402	42,434	54,650
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)		(348)	(1,005)	(1,313)
Defined Benefit Plan, Benefit Obligation		33,778	35,274	47,875
Liability, Defined Benefit Plan, Current		0	0
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax		0	0
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)		(293)	$ (319)	$ (436)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		34
System Energy [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year		$ 16,650
Minimum [Member] | Defined Contribution Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match		70.00%
Maximum [Member] | Defined Contribution Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match	100.00%	100.00%
Domestic Equity Securities [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		32.00%
Domestic Equity Securities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		25.00%
Domestic Equity Securities [Member] | Minimum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		26.00%
Domestic Equity Securities [Member] | Minimum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		20.00%
Domestic Equity Securities [Member] | Maximum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		38.00%
Domestic Equity Securities [Member] | Maximum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		30.00%
International Equity Securities [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		17.00%
International Equity Securities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		17.00%
International Equity Securities [Member] | Minimum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		14.00%
International Equity Securities [Member] | Minimum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		12.00%
International Equity Securities [Member] | Maximum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		20.00%
International Equity Securities [Member] | Maximum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		22.00%
Fixed Income Funds [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		58.00%
Fixed Income Funds [Member] | Minimum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		53.00%
Fixed Income Funds [Member] | Maximum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage		63.00%
Defined Benefit Plan Total Plan Assets [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage		10.00%
Defined Benefit Plan Total Plan Assets [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage		10.00%