XML 86 R48.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Retirement And Other Postretirement Benefits (Schedule of Net Benefit Costs) (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Other Postretirement Benefits Plan [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | $ 3,126,000 | $ 3,664,000 | $ 6,252,000 | $ 7,328,000
Defined Benefit Plan, Interest Cost | 9,852,000 | 10,568,000 | 19,704,000 | 21,136,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (10,569,000) | (9,183,000) | (21,138,000) | (18,366,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | (5,720,000) | (5,640,000) | (11,440,000) | (11,280,000)
Defined Benefit Plan, Amortization of Gain (Loss) | (2,761,000) | (2,862,000) | (5,522,000) | (5,724,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (6,072,000) | (3,453,000) | (12,144,000) | (6,906,000)
Other Postretirement Benefits Plan [Member] | Entergy Arkansas [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 642,000 | 741,000 | 1,284,000 | 1,482,000
Defined Benefit Plan, Interest Cost | 1,833,000 | 2,001,000 | 3,666,000 | 4,002,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (4,384,000) | (3,778,000) | (8,768,000) | (7,556,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | 524,000 | 524,000 | 1,048,000 | 1,048,000
Defined Benefit Plan, Amortization of Gain (Loss) | 0 | 43,000 | 0 | 86,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (1,385,000) | (469,000) | (2,770,000) | (938,000)
Other Postretirement Benefits Plan [Member] | Entergy Louisiana [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 700,000 | 845,000 | 1,400,000 | 1,690,000
Defined Benefit Plan, Interest Cost | 1,999,000 | 2,233,000 | 3,998,000 | 4,466,000
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) | (2,272,000) | (1,902,000)
Defined Benefit Plan, Amortization of Gain (Loss) | (1,738,000) | (1,764,000) | (3,476,000) | (3,528,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (175,000) | 363,000 | (350,000) | 726,000
Other Postretirement Benefits Plan [Member] | Entergy Mississippi [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 184,000 | 220,000 | 368,000 | 440,000
Defined Benefit Plan, Interest Cost | 486,000 | 543,000 | 972,000 | 1,086,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (1,372,000) | (1,179,000) | (2,744,000) | (2,358,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | (239,000) | (239,000) | (478,000) | (478,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 15,000 | 21,000 | 30,000 | 42,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (926,000) | (634,000) | (1,852,000) | (1,268,000)
Other Postretirement Benefits Plan [Member] | Entergy New Orleans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 51,000 | 59,000 | 102,000 | 118,000
Defined Benefit Plan, Interest Cost | 253,000 | 290,000 | 506,000 | 580,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (1,479,000) | (1,316,000) | (2,958,000) | (2,632,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | (229,000) | (229,000) | (458,000) | (458,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 19,000 | 117,000 | 38,000 | 234,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (1,385,000) | (1,079,000) | (2,770,000) | (2,158,000)
Other Postretirement Benefits Plan [Member] | Entergy Texas [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 168,000 | 202,000 | 336,000 | 404,000
Defined Benefit Plan, Interest Cost | 603,000 | 649,000 | 1,206,000 | 1,298,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (2,539,000) | (2,194,000) | (5,078,000) | (4,388,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | (1,093,000) | (1,093,000) | (2,186,000) | (2,186,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 148,000 | 229,000 | 296,000 | 458,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (2,713,000) | (2,207,000) | (5,426,000) | (4,414,000)
Other Postretirement Benefits Plan [Member] | System Energy [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 175,000 | 189,000 | 350,000 | 378,000
Defined Benefit Plan, Interest Cost | 398,000 | 432,000 | 796,000 | 864,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (728,000) | (634,000) | (1,456,000) | (1,268,000)
Defined Benefit Plan, Amortization of Prior Service Cost (Credit) | (73,000) | (73,000) | (146,000) | (146,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 0 | 0 | 0 | 0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | (228,000) | (86,000) | (456,000) | (172,000)
Non Qualified Pension Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 0 | 4,600,000 | 0 | 9,300,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | 2,700,000 | 8,800,000 | 5,400,000 | 18,000,000
Non Qualified Pension Plans [Member] | Entergy Arkansas [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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 | 136,000 | 513,000
Non Qualified Pension Plans [Member] | Entergy Louisiana [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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 | 25,000 | 102,000 | 52,000
Non Qualified Pension Plans [Member] | Entergy Mississippi [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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 | 87,000 | 166,000 | 639,000
Non Qualified Pension Plans [Member] | Entergy New Orleans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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 | 61,000 | 66,000
Non Qualified Pension Plans [Member] | Entergy Texas [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
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 | 124,000 | 126,000
Qualified Pension Plans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 23,370,000 | 25,366,000 | 46,746,000 | 51,044,000
Defined Benefit Plan, Interest Cost | 65,961,000 | 74,033,000 | 136,587,000 | 149,734,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (89,506,000) | (95,752,000) | (185,486,000) | (193,885,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 14,854,000 | 21,307,000 | 29,974,000 | 43,654,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (325,253,000) | (7,246,000) | (325,253,000) | (145,674,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | 339,932,000 | 32,200,000 | 353,074,000 | 196,221,000
Qualified Pension Plans [Member] | Entergy Arkansas [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 4,100,000 | 4,661,000 | 8,199,000 | 9,410,000
Defined Benefit Plan, Interest Cost | 13,217,000 | 13,917,000 | 26,434,000 | 28,197,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (18,155,000) | (17,878,000) | (36,310,000) | (35,954,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 5,746,000 | 5,763,000 | 11,492,000 | 12,732,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 0 | (1,784,000) | 0 | (23,958,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | 4,908,000 | 8,247,000 | 9,815,000 | 38,343,000
Qualified Pension Plans [Member] | Entergy Louisiana [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 5,551,000 | 6,199,000 | 11,102,000 | 12,479,000
Defined Benefit Plan, Interest Cost | 13,961,000 | 14,944,000 | 27,922,000 | 30,323,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (19,447,000) | (18,766,000) | (38,894,000) | (37,999,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 2,602,000 | 4,992,000 | 5,204,000 | 9,956,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 0 | (2,232,000) | 0 | (38,230,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | 2,667,000 | 9,601,000 | 5,334,000 | 52,989,000
Qualified Pension Plans [Member] | Entergy Mississippi [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 1,284,000 | 1,456,000 | 2,568,000 | 2,938,000
Defined Benefit Plan, Interest Cost | 3,521,000 | 3,824,000 | 7,042,000 | 7,754,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (5,113,000) | (4,635,000) | (10,226,000) | (9,519,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 1,140,000 | 1,627,000 | 2,280,000 | 3,392,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 0 | (88,000) | 0 | (11,743,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | 832,000 | 2,360,000 | 1,664,000 | 16,308,000
Qualified Pension Plans [Member] | Entergy New Orleans [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 440,000 | 487,000 | 880,000 | 978,000
Defined Benefit Plan, Interest Cost | 1,569,000 | 1,669,000 | 3,138,000 | 3,384,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (2,203,000) | (2,310,000) | (4,407,000) | (4,577,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 470,000 | 484,000 | 940,000 | 997,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 0 | (7,000) | 0 | (1,700,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | 276,000 | 337,000 | 551,000 | 2,482,000
Qualified Pension Plans [Member] | Entergy Texas [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 962,000 | 1,090,000 | 1,923,000 | 2,197,000
Defined Benefit Plan, Interest Cost | 2,831,000 | 3,162,000 | 5,662,000 | 6,404,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (4,077,000) | (4,023,000) | (8,154,000) | (8,175,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 393,000 | 1,059,000 | 786,000 | 2,049,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | 0 | (592,000) | 0 | (10,270,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | 109,000 | 1,880,000 | 217,000 | 12,745,000
Qualified Pension Plans [Member] | System Energy [Member] |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Defined Benefit Plan, Service Cost | 1,383,000 | 1,445,000 | 2,767,000 | 2,912,000
Defined Benefit Plan, Interest Cost | 3,386,000 | 3,435,000 | 6,777,000 | 6,963,000
Defined Benefit Plan, Expected Return (Loss) on Plan Assets | (4,633,000) | (4,501,000) | (9,281,000) | (9,039,000)
Defined Benefit Plan, Amortization of Gain (Loss) | 1,162,000 | 1,274,000 | 2,327,000 | 2,735,000
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement | (611,000) | (490,000) | (611,000) | (5,290,000)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total | $ 1,909,000 | $ 2,143,000 | $ 3,201,000 | $ 8,861,000

X
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
Name: | us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(5) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(5) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
Name: | us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
Name: | us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cost recognized for passage of time related to defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
Name: | us-gaap_DefinedBenefitPlanInterestCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
Name: | us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk related to obligation and assets used to effect settlement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org//1943274/2147480535/715-20-45-3A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
Name: | us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480482/715-20-55-18 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
Name: | us-gaap_DefinedBenefitPlanServiceCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyArkansasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyLouisianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyMississippiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyNewOrleansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyTexasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_SystemEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=etr_NonQualifiedPensionPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=etr_QualifiedPensionPlansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |