Retirement And Other Postretirement Benefits (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	$ 3,396	$ 3,837	$ 10,191	$ 11,511
Amortization of loss	1,700	(4,870)	4,994	(29,774)
Total	3,177	(15,372)	4,777	(33,929)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(1,919)	(14,339)	(10,408)	(15,666)
Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	951	1,158	2,853	3,474
Amortization of loss	1,574	(222)	4,703	(849)
Total	2,503	(404)	6,005	1,107
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(22)	(1,340)	(1,551)	(1,518)
Pension Plans Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0	0	0
Amortization of loss	(1,064)	(3,976)	(3,208)	(26,921)
Total	(1,554)	(18,239)	(10,654)	(41,362)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(490)	(14,263)	(7,446)	(14,441)
Pension Plans Defined Benefit [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0	0	0
Amortization of loss	(190)	(407)	(588)	(1,404)
Total	(212)	(1,747)	(2,139)	(2,922)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(22)	(1,340)	(1,551)	(1,518)
Other Postretirement [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	3,509	4,014	10,529	12,042
Amortization of loss	2,898	(596)	8,693	(1,788)
Total	6,407	3,418	19,222	10,254
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0	0	0	0
Other Postretirement [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	951	1,158	2,853	3,474
Amortization of loss	1,764	186	5,292	558
Total	2,715	1,344	8,145	4,032
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	0	0	0	0
Non Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	(113)	(177)	(338)	(531)
Amortization of loss	(134)	(298)	(491)	(1,065)
Total	(1,676)	(551)	(3,791)	(2,821)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	(1,429)	(76)	(2,962)	(1,225)
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member]
Defined Benefit Plan Disclosure [Line Items]
Amortization of prior service cost	0	0	0	0
Amortization of loss	0	(1)	(1)	(3)
Total	0	(1)	(1)	(3)
Recognized Net Gain (Loss) Due To Settlements, Pre Tax	$ 0	$ 0	$ 0	$ 0