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Risk Management and Fair Values (Schedule of Derivatives Not Designated As Hedging Instruments) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Financial Transmission Rights (FTRs) [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 0 |  | $ 2,000,000
Financial transmission rights |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 0 |  |
Financial transmission rights | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Purchased Power | Utilities Operating Expense, Purchased Power |
Derivative, Gain (Loss) on Derivative, Net | $ 49,000,000 | $ 53,000,000 |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current |  | Prepaid Expense and Other Assets, Current
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | $ 0 |  | $ (1,000,000)
Derivative Asset, Subject to Master Netting Arrangement, after Offset | 7,000,000 |  | $ 20,000,000
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] |  |  | Other Liabilities, Current
Derivative Liability, Subject to Master Netting Arrangement, after Offset |  |  | $ 1,000,000
Financial transmission rights | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative Asset, Subject to Master Netting Arrangement, before Offset |  |  | 0
Financial transmission rights | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative Asset, Subject to Master Netting Arrangement, before Offset | $ 7,000,000 |  | $ 21,000,000
Natural Gas Swaps | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Fuel Used | Utilities Operating Expense, Fuel Used |
Derivative, Gain (Loss) on Derivative, Net | $ 11,000,000 | $ (6,000,000) |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current |  | Prepaid Expense and Other Assets, Current
Derivative Asset, Subject to Master Netting Arrangement, before Offset | $ 8,000,000 |  | $ 2,000,000
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | 0 |  | 0
Derivative Asset, Subject to Master Netting Arrangement, after Offset | 8,000,000 |  | 2,000,000
Entergy Arkansas [Member] | Uncommitted Credit Facility of $25 Million [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | 17,100,000 |  |
Entergy Arkansas [Member] | Financial Transmission Rights (FTRs) [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 0 |  | $ 500,000
Entergy Arkansas [Member] | Financial transmission rights | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Purchased Power | Utilities Operating Expense, Purchased Power |
Derivative, Gain (Loss) on Derivative, Net | $ 18,800,000 | $ 26,900,000 |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current |  | Prepaid Expense and Other Assets, Current
Derivative Asset, Subject to Master Netting Arrangement, before Offset | $ 3,000,000.0 |  | $ 8,600,000
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | 0 |  | (100,000)
Derivative Asset, Subject to Master Netting Arrangement, after Offset | 3,000,000.0 |  | 8,500,000
Entergy Louisiana [Member] | Uncommitted Credit Facility of $125 Million [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | 56,200,000 |  |
Entergy Louisiana [Member] | Financial Transmission Rights (FTRs) [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 0 |  | $ 100,000
Entergy Louisiana [Member] | Financial transmission rights | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Purchased Power | Utilities Operating Expense, Purchased Power |
Derivative, Gain (Loss) on Derivative, Net | $ 22,000,000.0 | $ 16,200,000 |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current |  | Prepaid Expense and Other Assets, Current
Derivative Asset, Subject to Master Netting Arrangement, before Offset | $ 3,400,000 |  | $ 8,700,000
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | 0 |  | (100,000)
Derivative Asset, Subject to Master Netting Arrangement, after Offset | 3,400,000 |  | 8,600,000
Entergy Mississippi [Member] | Uncommitted Credit Facility of $65 Million [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | 32,600,000 |  |
Entergy Mississippi [Member] | Financial Transmission Rights (FTRs) [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 0 |  | 800,000
Entergy Mississippi [Member] | Financial transmission rights | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Purchased Power | Utilities Operating Expense, Purchased Power |
Derivative, Gain (Loss) on Derivative, Net | $ 2,000,000.0 | $ 1,100,000 |
Derivative Asset, Subject to Master Netting Arrangement, before Offset | 200,000 |  | 400,000
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | $ (300,000) |  | $ (900,000)
Derivative Liability, Current, Statement of Financial Position [Extensible Enumeration] | Other Liabilities, Current |  | Other Liabilities, Current
Derivative Liability, Subject to Master Netting Arrangement, after Offset | $ 100,000 |  | $ 500,000
Entergy Mississippi [Member] | Natural Gas Swaps | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Fuel Used | Utilities Operating Expense, Fuel Used |
Derivative, Gain (Loss) on Derivative, Net | $ 11,400,000 | $ 5,200,000 |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current |  | Prepaid Expense and Other Assets, Current
Derivative Asset, Subject to Master Netting Arrangement, before Offset | $ 8,400,000 |  | $ 1,600,000
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | 0 |  | 0
Derivative Asset, Subject to Master Netting Arrangement, after Offset | 8,400,000 |  | 1,600,000
Entergy New Orleans [Member] | Financial Transmission Rights (FTRs) [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 0 |  | $ 100,000
Entergy New Orleans [Member] | Financial transmission rights | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Purchased Power | Utilities Operating Expense, Purchased Power |
Derivative, Gain (Loss) on Derivative, Net | $ 2,200,000 | $ 1,100,000 |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current |  | Prepaid Expense and Other Assets, Current
Derivative Asset, Subject to Master Netting Arrangement, before Offset | $ 400,000 |  | $ 1,300,000
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | 0 |  | 0
Derivative Asset, Subject to Master Netting Arrangement, after Offset | 400,000 |  | 1,300,000
Entergy New Orleans [Member] | Natural Gas Swaps | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] |  | Utilities Operating Expense, Fuel Used |
Derivative, Gain (Loss) on Derivative, Net |  | $ 500,000 |
Entergy Texas [Member] | Uncommitted Credit Facility of $80 Million [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | 105,400,000 |  |
Entergy Texas [Member] | Financial Transmission Rights (FTRs) [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Letters of Credit Outstanding, Amount | $ 0 |  | $ 300,000
Entergy Texas [Member] | Financial transmission rights | Not Designated as Hedging Instrument [Member] |  |  |
Effect Of Derivative Instruments Not Designated As Hedging Instruments On The Consolidated Statements Of Income [Line Items] |  |  |
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Utilities Operating Expense, Purchased Power | Utilities Operating Expense, Purchased Power |
Derivative, Gain (Loss) on Derivative, Net | $ 3,500,000 | $ 7,500,000 |
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration] | Prepaid Expense and Other Assets, Current |  | Prepaid Expense and Other Assets, Current
Derivative Asset, Subject to Master Netting Arrangement, before Offset | $ 600,000 |  | $ 2,000,000.0
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset | (200,000) |  | (100,000)
Derivative Asset, Subject to Master Netting Arrangement, after Offset | $ 400,000 |  | $ 1,900,000

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