Retirement, Other Postretirement Benefits, And Defined Contribution Plans Estimated Future Benefit Payments (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	$ 463,557
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	449,803
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	450,945
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	449,510
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	450,827
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	2,222,959
Non Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	13,802
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	10,894
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	8,507
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	14,374
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	9,325
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	36,584
Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	74,649
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	70,720
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	67,105
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	63,949
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	61,234
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	283,477
Entergy Arkansas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	90,682
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	89,113
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	88,427
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	87,845
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	87,719
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	429,882
Entergy Arkansas [Member] | Non Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	276
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	474
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	160
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	149
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	288
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	938
Entergy Arkansas [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	13,697
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	12,913
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	12,342
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	11,767
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	11,424
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	54,789
Entergy Louisiana [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	95,706
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	92,420
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	92,499
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	91,485
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	91,450
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	444,131
Entergy Louisiana [Member] | Non Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	308
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	301
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	288
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	265
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	270
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	941
Entergy Louisiana [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	15,049
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	14,380
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	13,676
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	13,037
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	12,348
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	57,264
Entergy Mississippi [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	25,534
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	24,816
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	25,210
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	24,686
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	24,147
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	115,629
Entergy Mississippi [Member] | Non Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	474
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	547
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	461
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	642
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	395
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	1,326
Entergy Mississippi [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	3,521
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	3,386
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	3,256
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	3,126
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	3,121
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	14,563
Entergy New Orleans [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	11,300
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	10,799
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	10,910
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	10,566
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	10,458
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	48,870
Entergy New Orleans [Member] | Non Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	106
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	143
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	139
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	224
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	141
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	529
Entergy New Orleans [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	2,200
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	2,086
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	1,942
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	1,785
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	1,640
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	7,297
Entergy Texas [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	21,807
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	21,019
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	21,268
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	20,407
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	20,074
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	92,182
Entergy Texas [Member] | Non Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	448
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	423
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	445
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	395
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	369
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	1,524
Entergy Texas [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	5,187
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	4,874
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	4,436
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	4,215
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	3,937
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	17,857
System Energy [Member] | Qualified Pension Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	24,163
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	22,053
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	21,612
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	22,665
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	22,107
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	109,712
System Energy [Member] | Other Postretirement Benefit Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Benefit Payment, Year One	2,811
Defined Benefit Plan, Expected Future Benefit Payment, Year Two	2,668
Defined Benefit Plan, Expected Future Benefit Payment, Year Three	2,434
Defined Benefit Plan, Expected Future Benefit Payment, Year Four	2,320
Defined Benefit Plan, Expected Future Benefit Payment, Year Five	2,266
Defined Benefit Plan, Expected Future Benefit Payment, after Year Five for Next Five Years	$ 11,270