Retirement, Other Postretirement Benefits, And Defined Contribution Plans (Schedule of Accumulated and Projected Benefit Obligations) (Details) - Pension Plan [Member] - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Qualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	$ 4,520,691	$ 5,915,404	$ 6,166,106
Defined Benefit Plan, Accumulated Benefit Obligation	4,100,000	5,600,000
Nonqualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	94,100	88,600
Defined Benefit Plan, Accumulated Benefit Obligation	81,200	77,900
Entergy Arkansas [Member] | Qualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	1,061,063	1,117,585	1,168,098
Defined Benefit Plan, Accumulated Benefit Obligation	980,559	1,048,901
Entergy Arkansas [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	1,721	2,313
Defined Benefit Plan, Accumulated Benefit Obligation	1,468	1,935
Entergy Louisiana [Member] | Qualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	1,123,024	1,173,283	1,256,422
Defined Benefit Plan, Accumulated Benefit Obligation	1,024,433	1,085,318
Entergy Louisiana [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	1,405	2,574
Defined Benefit Plan, Accumulated Benefit Obligation	1,197	2,494
Entergy Mississippi [Member] | Qualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	283,071	295,942	320,994
Defined Benefit Plan, Accumulated Benefit Obligation	257,759	273,338
Entergy Mississippi [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	3,566	3,369
Defined Benefit Plan, Accumulated Benefit Obligation	3,322	3,187
Entergy New Orleans [Member] | Qualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	127,133	133,950	140,436
Defined Benefit Plan, Accumulated Benefit Obligation	118,620	125,878
Entergy New Orleans [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	1,143	1,034
Defined Benefit Plan, Accumulated Benefit Obligation	939	814
Entergy Texas [Member] | Qualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	229,942	239,984	265,565
Defined Benefit Plan, Accumulated Benefit Obligation	212,935	225,379
Entergy Texas [Member] | Nonqualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	2,734	3,762
Defined Benefit Plan, Accumulated Benefit Obligation	2,710	3,701
System Energy [Member] | Qualified Plan [Member]
Defined Benefit Plan, Benefit Obligation	275,117	286,558	$ 288,302
Defined Benefit Plan, Accumulated Benefit Obligation	$ 252,397	$ 267,432