Retirement, Other Postretirement Benefits, And Defined Contribution Plans Estimated Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Medicare Subsidy Receipts, Year One	$ 70
Estimated Future Medicare Subsidy Receipts, Year Two	27
Estimated Future Medicare Subsidy Receipts, Year Three	34
Estimated Future Medicare Subsidy Receipts, Year Four	34
Estimated Future Medicare Subsidy Receipts, Year Five	39
Estimated Future Medicare Subsidy Receipts, Year Six - Year Ten	222
Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	550,204
Estimated Future Benefits Payments, Year Two	542,753
Estimated Future Benefits Payments, Year Three	549,913
Estimated Future Benefits Payments, Year Four	530,406
Estimated Future Benefits Payments, Year Five	525,278
Estimated Future Benefits Payments, Year Six - Year Ten	2,527,735
Non-Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	26,336
Estimated Future Benefits Payments, Year Two	24,710
Estimated Future Benefits Payments, Year Three	21,230
Estimated Future Benefits Payments, Year Four	36,210
Estimated Future Benefits Payments, Year Five	14,377
Estimated Future Benefits Payments, Year Six - Year Ten	52,967
Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	72,400
Estimated Future Benefits Payments, Year Two	72,220
Estimated Future Benefits Payments, Year Three	71,506
Estimated Future Benefits Payments, Year Four	70,148
Estimated Future Benefits Payments, Year Five	68,744
Estimated Future Benefits Payments, Year Six - Year Ten	328,634
Entergy Arkansas [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Medicare Subsidy Receipts, Year One	35
Estimated Future Medicare Subsidy Receipts, Year Two	3
Estimated Future Medicare Subsidy Receipts, Year Three	4
Estimated Future Medicare Subsidy Receipts, Year Four	4
Estimated Future Medicare Subsidy Receipts, Year Five	5
Estimated Future Medicare Subsidy Receipts, Year Six - Year Ten	27
Entergy Arkansas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	107,542
Estimated Future Benefits Payments, Year Two	104,328
Estimated Future Benefits Payments, Year Three	104,606
Estimated Future Benefits Payments, Year Four	102,411
Estimated Future Benefits Payments, Year Five	101,144
Estimated Future Benefits Payments, Year Six - Year Ten	487,637
Entergy Arkansas [Member] | Non-Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	248
Estimated Future Benefits Payments, Year Two	383
Estimated Future Benefits Payments, Year Three	324
Estimated Future Benefits Payments, Year Four	689
Estimated Future Benefits Payments, Year Five	143
Estimated Future Benefits Payments, Year Six - Year Ten	878
Entergy Arkansas [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	14,228
Estimated Future Benefits Payments, Year Two	13,652
Estimated Future Benefits Payments, Year Three	13,392
Estimated Future Benefits Payments, Year Four	13,021
Estimated Future Benefits Payments, Year Five	12,717
Estimated Future Benefits Payments, Year Six - Year Ten	61,153
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Medicare Subsidy Receipts, Year One	6
Estimated Future Medicare Subsidy Receipts, Year Two	5
Estimated Future Medicare Subsidy Receipts, Year Three	7
Estimated Future Medicare Subsidy Receipts, Year Four	8
Estimated Future Medicare Subsidy Receipts, Year Five	7
Estimated Future Medicare Subsidy Receipts, Year Six - Year Ten	51
Entergy Louisiana [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	120,365
Estimated Future Benefits Payments, Year Two	118,289
Estimated Future Benefits Payments, Year Three	117,416
Estimated Future Benefits Payments, Year Four	116,610
Estimated Future Benefits Payments, Year Five	114,232
Estimated Future Benefits Payments, Year Six - Year Ten	534,665
Entergy Louisiana [Member] | Non-Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	186
Estimated Future Benefits Payments, Year Two	172
Estimated Future Benefits Payments, Year Three	159
Estimated Future Benefits Payments, Year Four	146
Estimated Future Benefits Payments, Year Five	133
Estimated Future Benefits Payments, Year Six - Year Ten	503
Entergy Louisiana [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	15,845
Estimated Future Benefits Payments, Year Two	15,766
Estimated Future Benefits Payments, Year Three	15,404
Estimated Future Benefits Payments, Year Four	15,182
Estimated Future Benefits Payments, Year Five	14,868
Estimated Future Benefits Payments, Year Six - Year Ten	70,094
Entergy Mississippi [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Medicare Subsidy Receipts, Year One	14
Estimated Future Medicare Subsidy Receipts, Year Two	15
Estimated Future Medicare Subsidy Receipts, Year Three	16
Estimated Future Medicare Subsidy Receipts, Year Four	17
Estimated Future Medicare Subsidy Receipts, Year Five	18
Estimated Future Medicare Subsidy Receipts, Year Six - Year Ten	104
Entergy Mississippi [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	33,459
Estimated Future Benefits Payments, Year Two	33,055
Estimated Future Benefits Payments, Year Three	32,711
Estimated Future Benefits Payments, Year Four	31,838
Estimated Future Benefits Payments, Year Five	31,708
Estimated Future Benefits Payments, Year Six - Year Ten	143,052
Entergy Mississippi [Member] | Non-Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	190
Estimated Future Benefits Payments, Year Two	422
Estimated Future Benefits Payments, Year Three	504
Estimated Future Benefits Payments, Year Four	486
Estimated Future Benefits Payments, Year Five	412
Estimated Future Benefits Payments, Year Six - Year Ten	1,927
Entergy Mississippi [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	3,488
Estimated Future Benefits Payments, Year Two	3,550
Estimated Future Benefits Payments, Year Three	3,597
Estimated Future Benefits Payments, Year Four	3,657
Estimated Future Benefits Payments, Year Five	3,645
Estimated Future Benefits Payments, Year Six - Year Ten	18,095
Entergy New Orleans [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Medicare Subsidy Receipts, Year One	0
Estimated Future Medicare Subsidy Receipts, Year Two	0
Estimated Future Medicare Subsidy Receipts, Year Three	0
Estimated Future Medicare Subsidy Receipts, Year Four	0
Estimated Future Medicare Subsidy Receipts, Year Five	1
Estimated Future Medicare Subsidy Receipts, Year Six - Year Ten	0
Entergy New Orleans [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	13,992
Estimated Future Benefits Payments, Year Two	13,677
Estimated Future Benefits Payments, Year Three	13,333
Estimated Future Benefits Payments, Year Four	13,146
Estimated Future Benefits Payments, Year Five	12,875
Estimated Future Benefits Payments, Year Six - Year Ten	58,299
Entergy New Orleans [Member] | Non-Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	31
Estimated Future Benefits Payments, Year Two	82
Estimated Future Benefits Payments, Year Three	104
Estimated Future Benefits Payments, Year Four	135
Estimated Future Benefits Payments, Year Five	128
Estimated Future Benefits Payments, Year Six - Year Ten	782
Entergy New Orleans [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	2,449
Estimated Future Benefits Payments, Year Two	2,378
Estimated Future Benefits Payments, Year Three	2,288
Estimated Future Benefits Payments, Year Four	2,200
Estimated Future Benefits Payments, Year Five	2,096
Estimated Future Benefits Payments, Year Six - Year Ten	9,058
Entergy Texas [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Medicare Subsidy Receipts, Year One	0
Estimated Future Medicare Subsidy Receipts, Year Two	0
Estimated Future Medicare Subsidy Receipts, Year Three	0
Estimated Future Medicare Subsidy Receipts, Year Four	0
Estimated Future Medicare Subsidy Receipts, Year Five	0
Estimated Future Medicare Subsidy Receipts, Year Six - Year Ten	0
Entergy Texas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	31,134
Estimated Future Benefits Payments, Year Two	30,381
Estimated Future Benefits Payments, Year Three	28,661
Estimated Future Benefits Payments, Year Four	26,807
Estimated Future Benefits Payments, Year Five	26,983
Estimated Future Benefits Payments, Year Six - Year Ten	114,747
Entergy Texas [Member] | Non-Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	3,080
Estimated Future Benefits Payments, Year Two	441
Estimated Future Benefits Payments, Year Three	420
Estimated Future Benefits Payments, Year Four	398
Estimated Future Benefits Payments, Year Five	428
Estimated Future Benefits Payments, Year Six - Year Ten	1,677
Entergy Texas [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	5,061
Estimated Future Benefits Payments, Year Two	4,998
Estimated Future Benefits Payments, Year Three	4,824
Estimated Future Benefits Payments, Year Four	4,686
Estimated Future Benefits Payments, Year Five	4,458
Estimated Future Benefits Payments, Year Six - Year Ten	20,932
System Energy [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Medicare Subsidy Receipts, Year One	1
Estimated Future Medicare Subsidy Receipts, Year Two	1
Estimated Future Medicare Subsidy Receipts, Year Three	1
Estimated Future Medicare Subsidy Receipts, Year Four	0
Estimated Future Medicare Subsidy Receipts, Year Five	1
Estimated Future Medicare Subsidy Receipts, Year Six - Year Ten	4
System Energy [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	26,953
Estimated Future Benefits Payments, Year Two	25,985
Estimated Future Benefits Payments, Year Three	26,155
Estimated Future Benefits Payments, Year Four	25,203
Estimated Future Benefits Payments, Year Five	24,939
Estimated Future Benefits Payments, Year Six - Year Ten	123,220
System Energy [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Estimated Future Benefits Payments, Year One	2,828
Estimated Future Benefits Payments, Year Two	2,774
Estimated Future Benefits Payments, Year Three	2,668
Estimated Future Benefits Payments, Year Four	2,617
Estimated Future Benefits Payments, Year Five	2,511
Estimated Future Benefits Payments, Year Six - Year Ten	$ 12,474