Retirement And Other Postretirement Benefits (Schedule of Net Benefit Costs) (Details) - USD ($)
|
3 Months Ended |
9 Months Ended |
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Pension Plan [Member] | Qualified Plan |
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|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
$ 23,358,000
|
$ 25,302,000
|
$ 70,104,000
|
$ 76,346,000
|
Defined Benefit Plan, Interest Cost |
56,631,000
|
73,850,000
|
193,218,000
|
223,584,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(76,557,000)
|
(96,775,000)
|
(262,043,000)
|
(290,660,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
14,322,000
|
20,204,000
|
44,296,000
|
63,858,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
0
|
(6,914,000)
|
(325,253,000)
|
(152,588,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
17,754,000
|
29,495,000
|
370,828,000
|
225,716,000
|
Pension Plan [Member] | Nonqualified Plan |
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|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
0
|
18,000,000
|
0
|
27,300,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
2,700,000
|
21,800,000
|
8,200,000
|
39,800,000
|
Pension Plan [Member] | Entergy Arkansas [Member] | Qualified Plan |
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|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
4,101,000
|
4,566,000
|
12,300,000
|
13,976,000
|
Defined Benefit Plan, Interest Cost |
13,218,000
|
13,813,000
|
39,652,000
|
42,010,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(18,156,000)
|
(17,639,000)
|
(54,466,000)
|
(53,593,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
5,745,000
|
5,438,000
|
17,237,000
|
18,170,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
|
(558,000)
|
0
|
(24,516,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
4,908,000
|
6,736,000
|
14,723,000
|
45,079,000
|
Pension Plan [Member] | Entergy Arkansas [Member] | Nonqualified Plan |
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|
|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
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Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
0
|
0
|
0
|
379,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
68,000
|
63,000
|
204,000
|
575,000
|
Pension Plan [Member] | Entergy Louisiana [Member] | Qualified Plan |
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|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
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Defined Benefit Plan, Service Cost |
5,550,000
|
6,175,000
|
16,652,000
|
18,654,000
|
Defined Benefit Plan, Interest Cost |
13,962,000
|
14,896,000
|
41,884,000
|
45,219,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(19,446,000)
|
(18,892,000)
|
(58,340,000)
|
(56,891,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
2,601,000
|
4,748,000
|
7,805,000
|
14,704,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
|
(561,000)
|
0
|
(38,791,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
2,667,000
|
7,488,000
|
8,001,000
|
60,477,000
|
Pension Plan [Member] | Entergy Louisiana [Member] | Nonqualified Plan |
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|
|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
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Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
0
|
0
|
0
|
0
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
51,000
|
24,000
|
153,000
|
76,000
|
Pension Plan [Member] | Entergy Mississippi [Member] | Qualified Plan |
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|
|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
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Defined Benefit Plan, Service Cost |
1,284,000
|
1,431,000
|
3,852,000
|
4,369,000
|
Defined Benefit Plan, Interest Cost |
3,522,000
|
3,797,000
|
10,564,000
|
11,551,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(5,112,000)
|
(4,830,000)
|
(15,338,000)
|
(14,349,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
1,140,000
|
1,545,000
|
3,420,000
|
4,937,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
|
(345,000)
|
0
|
(12,088,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
834,000
|
2,288,000
|
2,498,000
|
18,596,000
|
Pension Plan [Member] | Entergy Mississippi [Member] | Nonqualified Plan |
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|
|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
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Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
0
|
0
|
0
|
453,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
83,000
|
85,000
|
249,000
|
724,000
|
Pension Plan [Member] | Entergy New Orleans [Member] | Qualified Plan |
|
|
|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
441,000
|
492,000
|
1,321,000
|
1,470,000
|
Defined Benefit Plan, Interest Cost |
1,569,000
|
1,667,000
|
4,707,000
|
5,051,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(2,202,000)
|
(2,206,000)
|
(6,609,000)
|
(6,783,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
471,000
|
456,000
|
1,411,000
|
1,453,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
|
(248,000)
|
0
|
(1,948,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
279,000
|
657,000
|
830,000
|
3,139,000
|
Pension Plan [Member] | Entergy New Orleans [Member] | Nonqualified Plan |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
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Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
0
|
0
|
0
|
0
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
31,000
|
33,000
|
93,000
|
99,000
|
Pension Plan [Member] | Entergy Texas [Member] | Qualified Plan |
|
|
|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
963,000
|
1,074,000
|
2,886,000
|
3,271,000
|
Defined Benefit Plan, Interest Cost |
2,832,000
|
3,138,000
|
8,494,000
|
9,542,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(4,077,000)
|
(4,147,000)
|
(12,231,000)
|
(12,322,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
393,000
|
1,008,000
|
1,179,000
|
3,057,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
|
(632,000)
|
0
|
(10,902,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
111,000
|
1,705,000
|
328,000
|
14,450,000
|
Pension Plan [Member] | Entergy Texas [Member] | Nonqualified Plan |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
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Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
0
|
0
|
0
|
0
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
62,000
|
63,000
|
186,000
|
190,000
|
Pension Plan [Member] | System Energy [Member] | Qualified Plan |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
1,380,000
|
1,430,000
|
4,147,000
|
4,342,000
|
Defined Benefit Plan, Interest Cost |
3,375,000
|
3,419,000
|
10,152,000
|
10,382,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(4,602,000)
|
(4,392,000)
|
(13,883,000)
|
(13,431,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
1,155,000
|
1,204,000
|
3,482,000
|
3,939,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement |
|
(228,000)
|
(611,000)
|
(5,518,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
1,308,000
|
1,889,000
|
4,509,000
|
10,750,000
|
Other Postretirement Benefits Plan [Member] |
|
|
|
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Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
3,126,000
|
3,664,000
|
9,378,000
|
10,992,000
|
Defined Benefit Plan, Interest Cost |
9,852,000
|
10,568,000
|
29,556,000
|
31,704,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(10,569,000)
|
(9,183,000)
|
(31,707,000)
|
(27,549,000)
|
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
(5,720,000)
|
(5,640,000)
|
(17,160,000)
|
(16,920,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
(2,761,000)
|
(2,862,000)
|
(8,283,000)
|
(8,586,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
(6,072,000)
|
(3,453,000)
|
(18,216,000)
|
(10,359,000)
|
Other Postretirement Benefits Plan [Member] | Entergy Arkansas [Member] |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
642,000
|
741,000
|
1,926,000
|
2,223,000
|
Defined Benefit Plan, Interest Cost |
1,833,000
|
2,001,000
|
5,499,000
|
6,003,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(4,384,000)
|
(3,778,000)
|
(13,152,000)
|
(11,334,000)
|
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
524,000
|
524,000
|
1,572,000
|
1,572,000
|
Defined Benefit Plan, Amortization of Gain (Loss) |
0
|
43,000
|
0
|
129,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
(1,385,000)
|
(469,000)
|
(4,155,000)
|
(1,407,000)
|
Other Postretirement Benefits Plan [Member] | Entergy Louisiana [Member] |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
700,000
|
845,000
|
2,100,000
|
2,535,000
|
Defined Benefit Plan, Interest Cost |
1,999,000
|
2,233,000
|
5,997,000
|
6,699,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
0
|
0
|
0
|
0
|
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
(1,136,000)
|
(951,000)
|
(3,408,000)
|
(2,853,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
(1,738,000)
|
(1,764,000)
|
(5,214,000)
|
(5,292,000)
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
(175,000)
|
363,000
|
(525,000)
|
1,089,000
|
Other Postretirement Benefits Plan [Member] | Entergy Mississippi [Member] |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
184,000
|
220,000
|
552,000
|
660,000
|
Defined Benefit Plan, Interest Cost |
486,000
|
543,000
|
1,458,000
|
1,629,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(1,372,000)
|
(1,179,000)
|
(4,116,000)
|
(3,537,000)
|
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
(239,000)
|
(239,000)
|
(717,000)
|
(717,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
15,000
|
21,000
|
45,000
|
63,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
(926,000)
|
(634,000)
|
(2,778,000)
|
(1,902,000)
|
Other Postretirement Benefits Plan [Member] | Entergy New Orleans [Member] |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
51,000
|
59,000
|
153,000
|
177,000
|
Defined Benefit Plan, Interest Cost |
253,000
|
290,000
|
759,000
|
870,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(1,479,000)
|
(1,316,000)
|
(4,437,000)
|
(3,948,000)
|
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
(229,000)
|
(229,000)
|
(687,000)
|
(687,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
19,000
|
117,000
|
57,000
|
351,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
(1,385,000)
|
(1,079,000)
|
(4,155,000)
|
(3,237,000)
|
Other Postretirement Benefits Plan [Member] | Entergy Texas [Member] |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
168,000
|
202,000
|
504,000
|
606,000
|
Defined Benefit Plan, Interest Cost |
603,000
|
649,000
|
1,809,000
|
1,947,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(2,539,000)
|
(2,194,000)
|
(7,617,000)
|
(6,582,000)
|
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
(1,093,000)
|
(1,093,000)
|
(3,279,000)
|
(3,279,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
148,000
|
229,000
|
444,000
|
687,000
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
(2,713,000)
|
(2,207,000)
|
(8,139,000)
|
(6,621,000)
|
Other Postretirement Benefits Plan [Member] | System Energy [Member] |
|
|
|
|
Defined Benefit Plan Disclosure [Line Items] |
|
|
|
|
Defined Benefit Plan, Service Cost |
175,000
|
189,000
|
525,000
|
567,000
|
Defined Benefit Plan, Interest Cost |
398,000
|
432,000
|
1,194,000
|
1,296,000
|
Defined Benefit Plan, Expected Return (Loss) on Plan Assets |
(728,000)
|
(634,000)
|
(2,184,000)
|
(1,902,000)
|
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) |
(73,000)
|
(73,000)
|
(219,000)
|
(219,000)
|
Defined Benefit Plan, Amortization of Gain (Loss) |
0
|
0
|
0
|
0
|
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total |
$ (228,000)
|
$ (86,000)
|
$ (684,000)
|
$ (258,000)
|