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Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Narrative) (Details) $ in Thousands | 1 Months Ended | 6 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | May 31, 2022 USD ($) | Apr. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2026 USD ($) | Dec. 31, 2025 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Feb. 28, 2022 USD ($) | Jan. 01, 2022 USD ($) | Dec. 31, 2021 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | $ 3,500,000 |  |  |  | $ 3,500,000 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | $ 150,000 |  |  |  | $ 150,000 |  |  |  |  |  |  |  |
Commercial Paper Program [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate | 0.91% |  |  |  | 0.91% |  |  |  |  |  |  |  |
Commercial Paper program limit | $ 2,000,000 |  |  |  | $ 2,000,000 |  |  |  |  |  |  |  |
Commercial Paper Amount Outstanding | 1,398,000 |  |  |  | 1,398,000 |  |  |  |  |  |  |  |
Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 3,500,000 |  |  |  | 3,500,000 |  |  |  |  |  |  |  |
Amount of total borrowing capacity against which fronting commitments exist | $ 20,000 |  |  |  | $ 20,000 |  |  |  |  |  |  |  |
Line of credit facility, commitment fee percentage |  |  |  |  | 0.225% |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 1.96% |  |  |  |  |  |  |  |
4.00% Series mortgage bonds due July 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage | 4.00% | 4.00% |  |  | 4.00% |  |  |  |  |  |  |  |
Repayments of First Mortgage Bond |  | $ 650,000 |  |  |  |  |  |  |  |  |  |  |
Repayments of Debt | $ 650,000 |  |  |  |  |  |  |  |  |  |  |  |
Entergy Arkansas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Short Term Borrowings | 250,000 |  |  |  | $ 250,000 |  |  |  |  |  |  |  |
Amount of total borrowing capacity against which fronting commitments exist | $ 5,000 |  |  |  | $ 5,000 |  |  |  |  |  |  |  |
Entergy Arkansas [Member] | 4.20% Series mortgage bonds due April 2049 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage | 4.20% |  |  |  | 4.20% |  |  |  |  |  |  |  |
Entergy Louisiana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Short Term Borrowings | $ 450,000 |  |  |  | $ 450,000 |  |  |  |  |  |  |  |
Amount of total borrowing capacity against which fronting commitments exist | $ 15,000 |  |  |  | $ 15,000 |  |  |  |  |  |  |  |
Aggregate principal amount of system restoration bonds authorization requested |  |  |  |  |  |  |  |  |  |  | $ 3,186,000 |  |
Entergy Louisiana [Member] | Unsecured Term Loan due June 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate | 1.18% |  |  |  | 1.18% |  |  |  |  |  |  |  |
Long-term Line of Credit, Noncurrent |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000
Entergy Louisiana [Member] | Mortgage Bonds Zero Point Six Two Percent Series Due November 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 0.62% |  |  |  |  |  |  |  |  |  |  |
Repayments of First Mortgage Bond |  | $ 435,000 |  |  |  |  |  |  |  |  |  |  |
First Mortgage Bond Amount Outstanding | $ 665,000 |  |  |  | $ 665,000 |  |  |  |  |  |  |  |
Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Short Term Borrowings | 200,000 |  |  |  | 200,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 400 |  |  |  | 400 |  |  |  |  |  |  |  | 200
Non-MISO letter of credit outstanding | $ 7,000 |  |  |  | $ 7,000 |  |  |  |  |  |  |  |
Entergy Mississippi [Member] | Unsecured Term Loan due December 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate | 2.47% |  |  |  | 2.47% |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt | $ 150,000 |  |  |  |  |  |  |  |  |  |  |  |
Entergy Texas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Short Term Borrowings | 200,000 |  |  |  | $ 200,000 |  |  |  |  |  |  |  |
Amount of total borrowing capacity against which fronting commitments exist | 30,000 |  |  |  | 30,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 5,300 |  |  |  | 5,300 |  |  |  |  |  |  |  | $ 100
Entergy Texas [Member] | Hurricanes Laura and Delta and Winter Storm Uri |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate principal amount of system restoration bonds authorization requested |  |  |  |  |  |  |  |  |  |  |  | $ 242,900 |
System Restoration Regulatory Asset |  |  |  |  |  |  |  |  |  |  |  | $ 13,300 |
Entergy Texas [Member] | 3.697% Senior Secured System Restoration Bonds Series 2022-A Due December 2036 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 190,850 |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 3.697% |  |  |  |  |  |  |  |  |  |
Entergy Texas [Member] | 3.051% Senior Secured System Restoration Bonds Series 2022-A Due December 2028 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 3.051% |  |  |  |  |  |  |  |  |  |
Entergy Texas [Member] | Aggregate Senior secured restoration bonds (securitization bonds) |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 290,850 |  |  |  |  |  |  |  |  |  |
Entergy Texas [Member] | Aggregate Senior secured restoration bonds (securitization bonds) | Hurricanes Laura and Delta and Winter Storm Uri |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 290,850 |  |  |  |  |  |  |  |  |  |
System Energy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Short Term Borrowings | $ 200,000 |  |  |  | $ 200,000 |  |  |  |  |  |  |  |
System Energy [Member] | Unsecured Term Loan due November 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt, weighted average interest rate | 2.20% |  |  |  | 2.20% |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 50,000 |  |  |  |  |  |  |  |  |  |  |
Entergy New Orleans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Authorized Short Term Borrowings | $ 150,000 |  |  |  | $ 150,000 |  |  |  |  |  |  |  |
Amount of total borrowing capacity against which fronting commitments exist | 10,000 |  |  |  | 10,000 |  |  |  |  |  |  |  |
System Energy VIE [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 93,800 |  |  |  | $ 93,800 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 1.54% |  |  |  |  |  |  |  |
Line of credit facility commitment fee as a percentage of undrawn commitment amount |  |  |  |  | 0.10% |  |  |  |  |  |  |  |
Entergy Arkansas VIE [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 12,000 |  |  |  | $ 12,000 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 1.55% |  |  |  |  |  |  |  |
Line of credit facility commitment fee as a percentage of undrawn commitment amount |  |  |  |  | 0.10% |  |  |  |  |  |  |  |
Entergy Louisiana Waterford VIE [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 70,400 |  |  |  | $ 70,400 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 1.49% |  |  |  |  |  |  |  |
Line of credit facility commitment fee as a percentage of undrawn commitment amount |  |  |  |  | 0.10% |  |  |  |  |  |  |  |
Entergy Louisiana River Bend VIE [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 20,000 |  |  |  | $ 20,000 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 1.37% |  |  |  |  |  |  |  |
Line of credit facility commitment fee as a percentage of undrawn commitment amount |  |  |  |  | 0.10% |  |  |  |  |  |  |  |
Entergy Nuclear Vermont Yankee |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 139,000 |  |  |  | $ 139,000 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | $ 139,000 |  |  |  | $ 139,000 |  |  |  |  |  |  |  |
Debt, weighted average interest rate | 2.02% |  |  |  | 2.02% |  |  |  |  |  |  |  |
Line of credit facility commitment fee as a percentage of undrawn commitment amount |  |  |  |  | 0.20% |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, commitment fee percentage |  |  |  |  | 0.375% |  |  |  |  |  |  |  |
Consolidated debt ratio | 0.65 |  |  |  | 0.65 |  |  |  |  |  |  |  |
Maximum [Member] | Entergy Arkansas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated debt ratio | 0.65 |  |  |  | 0.65 |  |  |  |  |  |  |  |
Consolidated debt ratio of total capitalization |  |  |  |  | 70.00% |  |  |  |  |  |  |  |
Maximum [Member] | Entergy Louisiana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated debt ratio | 0.65 |  |  |  | 0.65 |  |  |  |  |  |  |  |
Consolidated debt ratio of total capitalization |  |  |  |  | 70.00% |  |  |  |  |  |  |  |
Maximum [Member] | Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated debt ratio | 0.65 |  |  |  | 0.65 |  |  |  |  |  |  |  |
Maximum [Member] | Entergy Texas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated debt ratio | 0.65 |  |  |  | 0.65 |  |  |  |  |  |  |  |
Maximum [Member] | System Energy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated debt ratio | 0.65 |  |  |  | 0.65 |  |  |  |  |  |  |  |
Consolidated debt ratio of total capitalization |  |  |  |  | 70.00% |  |  |  |  |  |  |  |
Maximum [Member] | Entergy New Orleans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Consolidated debt ratio | 0.65 |  |  |  | 0.65 |  |  |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, commitment fee percentage |  |  |  |  | 0.075% |  |  |  |  |  |  |  |
Credit Facility Of Three Hundred Fifty Million [Member] | Entergy Louisiana [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | $ 350,000 |  |  |  | $ 350,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 0 |  |  |  | 0 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 0 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 2.88% |  |  |  |  |  |  |  |
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Arkansas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 150,000 |  |  |  | $ 150,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 0 |  |  |  | 0 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 0 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 2.75% |  |  |  |  |  |  |  |
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 150,000 |  |  |  | $ 150,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 0 |  |  |  | 0 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 100,000 |  |  |  | $ 100,000 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 2.42% |  |  |  |  |  |  |  |
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Texas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 150,000 |  |  |  | $ 150,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 1,100 |  |  |  | 1,100 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 0 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 2.88% |  |  |  |  |  |  |  |
Credit Facility Of Ten Million [Member] | Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 10,000 |  |  |  | $ 10,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 0 |  |  |  | 0 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 0 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 3.13% |  |  |  |  |  |  |  |
Credit Facility Of Twenty Five Million [Member] | Entergy Arkansas [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 25,000 |  |  |  | $ 25,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 0 |  |  |  | 0 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 0 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 3.19% |  |  |  |  |  |  |  |
Credit Facility Of Twenty Five Million [Member] | Entergy New Orleans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of Facility | 25,000 |  |  |  | $ 25,000 |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 0 |  |  |  | 0 |  |  |  |  |  |  |  |
Amount Drawn/ Outstanding | 0 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate During Period |  |  |  |  | 3.29% |  |  |  |  |  |  |  |
Subsequent Event [Member] | Entergy Texas [Member] | Tranche A-1 3.051% due December 2028 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months |  |  |  |  |  |  |  |  |  | $ 12,300 |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Two |  |  |  |  |  |  |  |  | $ 17,800 |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Three |  |  |  |  |  |  |  | $ 18,300 |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Four |  |  |  |  |  |  | $ 18,800 |  |  |  |  |  |
Long-term Debt, Maturities, Repayments of Principal in Year Five |  |  |  |  |  | $ 19,400 |  |  |  |  |  |  |
Credit Facility of Sixty Five Million [Member] | Entergy Mississippi [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount | 4,300 |  |  |  | $ 4,300 |  |  |  |  |  |  |  |
Uncommitted Credit Facility | $ 65,000 |  |  |  | $ 65,000 |  |  |  |  |  |  |  |

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- Definition Aggregate principal amount of system restoration bonds issuance authorization requested + References No definition available. + Details
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- Definition Amount of total borrowing capacity against which fronting commitments exist + References No definition available. + Details
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Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
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- Definition Authorized short-term borrowings. + References No definition available. + Details
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- Definition Commercial Paper Amount Outstanding + References No definition available. + Details
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Namespace Prefix: | etr_
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Balance Type: | credit
Period Type: | instant

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- Definition Commercial Paper program limit + References No definition available. + Details
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Namespace Prefix: | etr_
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Balance Type: | credit
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- Definition Consolidated debt ratio of capitalization. + References No definition available. + Details
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Namespace Prefix: | etr_
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- Definition First Mortgage Bond Amount Outstanding + References No definition available. + Details
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Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
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- Definition Line of credit facility commitment fee as a percentage of undrawn commitment amount + References No definition available. + Details
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Namespace Prefix: | etr_
Data Type: | dtr-types:percentItemType
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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