Retirement, Other Postretirement Benefits, And Defined Contribution Plans Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jan. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
non-current pension liability		$ 1,213,555	$ 1,949,325
Current pension liability		$ 104,845	$ 68,336
Ultimate healthcare cost trend rate		4.75%	4.75%
Defined Benefit Plan, Plan Assets, Payment for Settlement		$ (604,753)	$ (553,576)
Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		140,000	165,500
Net periodic benefit costs		30,900	28,600	$ 18,100
Projected benefit obligation		152,400	181,600
Accumulated other comprehensive income (before taxes)		8,700	17,000
-25550000		56,800	74,900
Common Stock Issued, Employee Stock Trust		35,000
Settlement charges related to the payment of lump sum benefits out of the plan		12,200	10,900
Defined Benefit Plan Benefit Obligation, Current		62,400	26,300
Defined Benefit Plan Benefit Obligation, Non-Current		90,000	155,300
Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		5,242,098	6,993,110	6,854,426
Projected benefit obligation		6,166,106	8,409,620	9,143,652
non-current pension liability		924,008	1,416,510
Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		5,242,098	6,993,110
Accumulated pension benefit obligation		5,700,000	7,800,000
Net periodic benefit costs		390,458	471,815	373,784
Defined Contribution Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Subsidiaries' contribution to defined contribution plan		$ 62,100	62,300	63,100
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay	500.00%	6.00%
Defined Contribution Plan Discretionary Employer Matching Contribution Percent	400.00%
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		$ 623,824	771,319	737,866
Net periodic benefit costs		(12,597)	(25,580)	(17,184)
Projected benefit obligation		865,854	1,189,682	1,181,075
non-current pension liability		199,546	376,363
Current pension liability		42,484	42,000
Accumulated other comprehensive income (before taxes)		(178,823)	(34,350)
-25550000		(25,550)	(33,069)	(32,882)
Expected Employer Contributions		42,500
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Employer Contributions		267,000
Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
non-current pension liability		118,020	185,789
Defined Benefit Plan, Plan Assets, Payment for Settlement		(96,000)	(104,400)
Entergy Arkansas [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		2,192	2,482
Net periodic benefit costs		282	343	333
Projected benefit obligation		2,433	2,875
non-current pension liability		2,199	2,627
Current pension liability		234	248
Accumulated other comprehensive income (before taxes)		0	0
Entergy Arkansas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		961,178	1,302,588	1,285,856
Projected benefit obligation		1,168,098	1,579,346	1,739,382
non-current pension liability		206,920	276,758
Entergy Arkansas [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		1,008,152	1,463,966
Net periodic benefit costs		74,774	92,919	81,723
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		255,117	315,495	304,192
Net periodic benefit costs		(5,665)	(11,084)	(10,075)
Projected benefit obligation		164,018	221,183	209,369
Current pension liability		0	0
Accumulated other comprehensive income (before taxes)		0	0
-25550000		1,885	(1,121)	(1,849)
Expected Employer Contributions		526
Entergy Arkansas [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Employer Contributions		54,464
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
non-current pension liability		389,631	528,213
Defined Benefit Plan, Plan Assets, Payment for Settlement		(146,600)	(166,600)
Entergy Louisiana [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		1,197	1,445
Net periodic benefit costs		102	307	148
Projected benefit obligation		1,197	1,469
non-current pension liability		1,013	1,283
Current pension liability		184	186
Accumulated other comprehensive income (before taxes)		5	10
Settlement charges		1	155
Entergy Louisiana [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		1,035,574	1,446,658	1,476,306
Projected benefit obligation		1,256,422	1,736,396	1,927,271
non-current pension liability		220,848	289,738
Entergy Louisiana [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		1,146,561	1,574,273
Net periodic benefit costs		100,633	117,150	70,648
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		0	0	0
Net periodic benefit costs		6,029	5,410	5,583
Projected benefit obligation		183,126	253,031	255,571
non-current pension liability		167,770	237,192
Current pension liability		15,356	15,839
Accumulated other comprehensive income (before taxes)		(94,323)	(34,518)
-25550000		(4,630)	(4,920)	(6,179)
Expected Employer Contributions		15,361
Entergy Louisiana [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Employer Contributions		44,561
Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
non-current pension liability		23,742	59,065
Defined Benefit Plan, Plan Assets, Payment for Settlement		(48,000)	(45,700)
Entergy Mississippi [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		3,594	3,377
Net periodic benefit costs		321	365	359
Projected benefit obligation		3,830	3,708
non-current pension liability		3,616	3,518
Current pension liability		214	190
Accumulated other comprehensive income (before taxes)		0	0
Settlement charges		2
Entergy Mississippi [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		265,736	356,424	371,394
Projected benefit obligation		320,994	448,858	510,109
non-current pension liability		55,258	92,434
Entergy Mississippi [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		292,596	407,851
Net periodic benefit costs		29,234	33,826	20,184
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		79,496	97,888	93,475
Net periodic benefit costs		(4,370)	(4,677)	(3,644)
Projected benefit obligation		44,365	61,001	61,990
Current pension liability		0	0
Accumulated other comprehensive income (before taxes)		0	0
-25550000		(1,772)	(1,775)	(1,652)
Expected Employer Contributions		136
Entergy Mississippi [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Employer Contributions		21,109
Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement		(16,200)	(14,300)
Entergy New Orleans [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		719	738
Net periodic benefit costs		114	30	31
Projected benefit obligation		1,024	1,069
non-current pension liability		992	1,039
Current pension liability		32	31
Accumulated other comprehensive income (before taxes)		0	0
Entergy New Orleans [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		119,710	172,366	172,551
Projected benefit obligation		140,436	195,380	220,287
non-current pension liability		20,726	23,014
Entergy New Orleans [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		128,499	178,010
Net periodic benefit costs		9,779	9,859	5,988
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		91,140	111,137	102,734
Net periodic benefit costs		(6,720)	(6,420)	(4,929)
Projected benefit obligation		23,971	31,866	31,707
Current pension liability		0	0
Accumulated other comprehensive income (before taxes)		0	0
-25550000		(916)	(916)	(763)
Expected Employer Contributions		193
Entergy New Orleans [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Employer Contributions		1,418
Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Payment for Settlement		(48,900)	(31,900)
Difference between rate case pension amounts and actuarially determined pension amounts		30,600
Entergy Texas [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		3,776	7,355
Net periodic benefit costs		1,320	615	469
Projected benefit obligation		3,850	7,462
non-current pension liability		3,402	4,382
Current pension liability		448	3,080
Accumulated other comprehensive income (before taxes)		0	0
Settlement charges		1,000	172
Entergy Texas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		226,417	341,915	349,748
Projected benefit obligation		265,565	371,802	410,664
non-current pension liability		39,148	29,887
Entergy Texas [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		245,428	342,441
Net periodic benefit costs		29,835	18,617	12,358
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		148,799	182,285	174,096
Net periodic benefit costs		(11,078)	(10,883)	(8,873)
Projected benefit obligation		53,482	71,961	74,233
Current pension liability		0	0
Accumulated other comprehensive income (before taxes)		0	0
-25550000		(4,371)	(3,742)	(3,364)
Expected Employer Contributions		86
Entergy Texas [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Employer Contributions		5,317
System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
non-current pension liability		40,750	76,104
Defined Benefit Plan, Plan Assets, Payment for Settlement		(23,500)	(33,000)
System Energy [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		240,392	312,060	310,818
Projected benefit obligation		288,302	394,794	441,148
non-current pension liability		47,910	82,734
System Energy [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated pension benefit obligation		269,583	366,920
Net periodic benefit costs		21,702	29,348	17,341
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Amount		42,434	54,650	52,619
Net periodic benefit costs		(1,005)	(1,313)	(1,518)
Projected benefit obligation		35,274	47,875	47,701
Current pension liability		0	0
Accumulated other comprehensive income (before taxes)		0	0
-25550000		(319)	$ (436)	$ (1,065)
Expected Employer Contributions		26
System Energy [Member] | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Employer Contributions		$ 15,542
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]
Target asset allocation		43.00%
Domestic Equity Securities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		25.00%
Domestic Equity Securities [Member] | Minimum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		35.00%
Domestic Equity Securities [Member] | Minimum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		20.00%
Domestic Equity Securities [Member] | Maximum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		51.00%
Domestic Equity Securities [Member] | Maximum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		30.00%
International Equity Securities [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		22.00%
International Equity Securities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		17.00%
International Equity Securities [Member] | Minimum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		17.00%
International Equity Securities [Member] | Minimum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		12.00%
International Equity Securities [Member] | Maximum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		27.00%
International Equity Securities [Member] | Maximum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		22.00%
Fixed Income Securities [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		35.00%
Fixed Income Securities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		58.00%
Fixed Income Securities [Member] | Minimum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		29.00%
Fixed Income Securities [Member] | Minimum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		53.00%
Fixed Income Securities [Member] | Maximum [Member] | Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		41.00%
Fixed Income Securities [Member] | Maximum [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Target asset allocation		63.00%
Defined Benefit Plan Total Plan Assets | 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 | Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage		10.00%