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Risk Management and Fair Values (Reconciliation Of Changes In The Net Assets (Liabilities) For The Fair Value Of Derivatives Classified As Level 3 In The Fair Value Hierarchy) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
Electricity Swaps And Options [Member] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value |  | $ 0.0 |  | $ 0.0 |  |  |  | $ 38.0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) |  |  |  | 2.0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included as Regulatory Liability/Asset |  |  |  | 0.0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements |  |  |  | 38.0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings |  |  |  | (2.0) |  |  |  |
Issuance of Financial Transmission Rights |  |  |  | 0.0 |  |  |  |
Fixed Transmission Rights (FTRs) [Member] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $ 12.0 | 15.0 | $ 12.0 | 15.0 | $ 1.0 | $ 4.0 | $ 4.0 | 9.0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings |  |  | 0.0 | 3.0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) |  |  | 0.0 | 0.0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included as Regulatory Liability/Asset | 32.0 | 15.0 | 52.0 | 135.0 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements | 37.0 | 16.0 | 60.0 | 144.0 |  |  |  |
Issuance of Financial Transmission Rights | 16.0 | 12.0 | 16.0 | 12.0 |  |  |  |
Fixed Transmission Rights (FTRs) [Member] | Entergy Arkansas [Member] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 4.4 | 3.8 | 4.4 | 3.8 | 0.4 | 2.3 | 1.4 | 2.7
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 14.6 | 3.0 |  | 27.8 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included as Regulatory Liability/Asset |  |  | 20.2 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements | 16.0 | 3.4 | 23.5 | 29.5 |  |  |  |
Issuance of Financial Transmission Rights | 5.4 | 2.8 | 5.4 | 2.8 |  |  |  |
Fixed Transmission Rights (FTRs) [Member] | Entergy Louisiana [Member] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 4.7 | 4.8 | 4.7 | 4.8 | 0.3 | 0.6 | 1.2 | 4.2
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 15.2 | 5.4 |  | 14.7 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included as Regulatory Liability/Asset |  |  | 24.3 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements | 16.1 | 5.9 | 25.5 | 18.2 |  |  |  |
Issuance of Financial Transmission Rights | 5.3 | 4.1 | 5.3 | 4.1 |  |  |  |
Fixed Transmission Rights (FTRs) [Member] | Entergy Mississippi [Member] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 0.5 | 2.1 | 0.5 | 2.1 | 0.2 | 0.3 | 0.3 | 0.6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 1.7 | 0.8 |  | 7.7 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included as Regulatory Liability/Asset |  |  | 2.6 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements | (2.2) | (0.7) | (3.2) | (7.9) |  |  |  |
Issuance of Financial Transmission Rights | 0.8 | 1.7 | 0.8 | 1.7 |  |  |  |
Fixed Transmission Rights (FTRs) [Member] | Entergy New Orleans [Member] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 0.6 | 0.6 | 0.6 | 0.6 | 0.1 | 0.1 | 0.1 | 0.1
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 1.3 | 0.9 |  | 2.1 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included as Regulatory Liability/Asset |  |  | 2.1 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements | (1.6) | (0.8) | (2.4) | (2.0) |  |  |  |
Issuance of Financial Transmission Rights | 0.8 | 0.4 | 0.8 | 0.4 |  |  |  |
Fixed Transmission Rights (FTRs) [Member] | Entergy Texas [Member] |  |  |  |  |  |  |  |
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |  |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | 1.5 | 3.8 | 1.5 | 3.8 | $ 0.5 | $ 0.8 | $ 0.5 | $ 1.6
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | (1.9) | 5.4 |  | 82.2 |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included as Regulatory Liability/Asset |  |  | 1.7 |  |  |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Settlements | 1.0 | 4.8 | 4.9 | 82.7 |  |  |  |
Issuance of Financial Transmission Rights | $ 3.9 | $ 2.7 | $ 3.9 | $ 2.7 |  |  |  |

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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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