Retirement, Other Postretirement Benefits, And Defined Contribution Plans Schedule Of Amounts Recorded On The Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Current liabilities	$ (104,845)	$ (68,336)
Non-current liabilities	(1,213,555)	(1,949,325)
Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	140,000	165,500
Accumulated other comprehensive income (before taxes)	8,700	17,000
Other Postretirement Benefits Plan [Member]
Employee contributions	22,486	22,023
Current liabilities	(42,484)	(42,000)
Non-current liabilities	(199,546)	(376,363)
Accumulated other comprehensive income (before taxes)	(178,823)	(34,350)
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(858)	(3,168)
Employer contributions	52,835	32,773
Defined Benefit Plan Regulatory Liability Before Tax	(12,367)	(45,674)
Entergy Arkansas [Member]
Non-current liabilities	(118,020)	(185,789)
Entergy Arkansas [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	2,192	2,482
Current liabilities	(234)	(248)
Non-current liabilities	(2,199)	(2,627)
Total funded status	(2,433)	(2,875)
Assets for Plan Benefits, Defined Benefit Plan	512	1,059
Accumulated other comprehensive income (before taxes)	0	0
Entergy Arkansas [Member] | Other Postretirement Benefits Plan [Member]
Employee contributions	5,521	5,637
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	91,099	94,312
Accumulated other comprehensive income (before taxes)	0	0
Defined Benefit Plan Regulatory Asset Before Tax	12,303	1,894
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	273	(85)
Defined Benefit Plan Refund to Employer		(767)
Employer contributions	1,573
Entergy Louisiana [Member]
Non-current liabilities	(389,631)	(528,213)
Entergy Louisiana [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	1,197	1,445
Current liabilities	(184)	(186)
Non-current liabilities	(1,013)	(1,283)
Total funded status	(1,197)	(1,469)
Assets for Plan Benefits, Defined Benefit Plan	119	233
Accumulated other comprehensive income (before taxes)	5	10
Entergy Louisiana [Member] | Other Postretirement Benefits Plan [Member]
Employee contributions	5,081	5,186
Current liabilities	(15,356)	(15,839)
Non-current liabilities	(167,770)	(237,192)
Accumulated other comprehensive income (before taxes)	(94,323)	(34,518)
Defined Benefit Plan Regulatory Asset Before Tax	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	323	357
Employer contributions	16,187	11,274
Entergy Mississippi [Member]
Non-current liabilities	(23,742)	(59,065)
Entergy Mississippi [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	3,594	3,377
Current liabilities	(214)	(190)
Non-current liabilities	(3,616)	(3,518)
Total funded status	(3,830)	(3,708)
Assets for Plan Benefits, Defined Benefit Plan	1,291	1,368
Accumulated other comprehensive income (before taxes)	0	0
Entergy Mississippi [Member] | Other Postretirement Benefits Plan [Member]
Employee contributions	1,443	1,386
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	35,131	36,887
Accumulated other comprehensive income (before taxes)	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	(1,300)	0
Defined Benefit Plan Refund to Employer		(393)
Employer contributions	759
Defined Benefit Plan Regulatory Liability Before Tax	(1,484)	(8,363)
Entergy New Orleans [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	719	738
Current liabilities	(32)	(31)
Non-current liabilities	(992)	(1,039)
Total funded status	(1,024)	(1,070)
Assets for Plan Benefits, Defined Benefit Plan	111	251
Accumulated other comprehensive income (before taxes)	0	0
Entergy New Orleans [Member] | Other Postretirement Benefits Plan [Member]
Employee contributions	440	403
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	67,169	79,271
Accumulated other comprehensive income (before taxes)	0	0
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	0
Employer contributions	333	126
Defined Benefit Plan Regulatory Liability Before Tax	(669)	(19,817)
Entergy Texas [Member] | Non-Qualified Pension Plans [Member]
Defined Benefit Plan, Accumulated Benefit Obligation	3,776	7,355
Current liabilities	(448)	(3,080)
Non-current liabilities	(3,402)	(4,382)
Total funded status	(3,850)	(7,462)
Liability, Defined Benefit Pension Plan	(2,615)	(706)
Accumulated other comprehensive income (before taxes)	0	0
Entergy Texas [Member] | Other Postretirement Benefits Plan [Member]
Employee contributions	924	1,491
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	95,317	110,324
Accumulated other comprehensive income (before taxes)	0	0
Defined Benefit Plan Regulatory Asset Before Tax	8,085
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	0	(3,776)
Defined Benefit Plan Refund to Employer	(23)
Employer contributions		98
Defined Benefit Plan Regulatory Liability Before Tax		(17,961)
System Energy [Member]
Non-current liabilities	(40,750)	(76,104)
System Energy [Member] | Other Postretirement Benefits Plan [Member]
Employee contributions	1,222	1,353
Current liabilities	0	0
Assets for Plan Benefits, Defined Benefit Plan	7,160	6,775
Accumulated other comprehensive income (before taxes)	0	0
Defined Benefit Plan Regulatory Asset Before Tax	3,265	1,718
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment	141	69
Employer contributions	$ 944	$ 1,212