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Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of uncommitted standby letter of credit facilities) (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Financial transmission rights |  |
Letters of Credit Outstanding, Amount | $ 4.0 | $ 2.0
Entergy Arkansas [Member] | Financial transmission rights |  |
Letters of Credit Outstanding, Amount | 2.1 | 0.5
Entergy Mississippi [Member] | Financial transmission rights |  |
Letters of Credit Outstanding, Amount | 1.2 | 0.8
Entergy Louisiana [Member] | Financial transmission rights |  |
Letters of Credit Outstanding, Amount | 0.5 | 0.1
Entergy New Orleans [Member] | Financial transmission rights |  |
Letters of Credit Outstanding, Amount |  | 0.1
Entergy Texas [Member] | Financial transmission rights |  |
Letters of Credit Outstanding, Amount |  | $ 0.3
Credit Facility of $25 Million [Member] | Entergy Arkansas [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | 25.0 |
Letters of Credit Outstanding, Amount | 0.0 |
Credit Facility of $25 Million [Member] | Entergy New Orleans [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | 25.0 |
Letters of Credit Outstanding, Amount | 0.0 |
Uncommitted Credit Facility of $25 Million [Member] | Entergy Arkansas [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 25.0 |
Line of Credit Facility, Commitment Fee Percentage | 0.78% |
Letters of Credit Outstanding, Amount | $ 19.8 |
Uncommitted Credit Facility of $25 Million [Member] | Entergy Arkansas [Member] | Financial Transmission Rights (FTRs) [Member] |  |
Letters of Credit Outstanding, Amount | 2.1 |
Uncommitted Credit Facility of $125 Million [Member] | Entergy Louisiana [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 125.0 |
Line of Credit Facility, Commitment Fee Percentage | 0.78% |
Letters of Credit Outstanding, Amount | $ 117.0 |
Uncommitted Credit Facility of $125 Million [Member] | Entergy Louisiana [Member] | Financial Transmission Rights (FTRs) [Member] |  |
Letters of Credit Outstanding, Amount | 0.5 |
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | Facility 1 |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 65.0 |
Line of Credit Facility, Commitment Fee Percentage | 0.78% |
Letters of Credit Outstanding, Amount | $ 62.2 |
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | Facility 2 |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 65.0 |
Line of Credit Facility, Commitment Fee Percentage | 0.50% |
Letters of Credit Outstanding, Amount | $ 43.0 |
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | Financial Transmission Rights (FTRs) [Member] |  |
Letters of Credit Outstanding, Amount | 1.2 |
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | MISO [Member] |  |
Letters of Credit Outstanding, Amount | 60.9 |
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | Non-MISO [Member] |  |
Letters of Credit Outstanding, Amount | 1.3 |
Uncommitted Credit Facility of $75 Million | Entergy Arkansas [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 75.0 |
Line of Credit Facility, Commitment Fee Percentage | 0.50% |
Letters of Credit Outstanding, Amount | $ 15.6 |
Uncommitted Credit Facility of $45 Million | Entergy Louisiana [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 45.0 |
Line of Credit Facility, Commitment Fee Percentage | 0.50% |
Letters of Credit Outstanding, Amount | $ 45.0 |
Uncommitted Credit Facility of $1 Million | Entergy New Orleans [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 1.0 |
Line of Credit Facility, Commitment Fee Percentage | 1.625% |
Letters of Credit Outstanding, Amount | $ 0.5 |
Uncommitted Credit Facility of $150 Million | Entergy Texas [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 150.0 |
Line of Credit Facility, Commitment Fee Percentage | 1.25% |
Letters of Credit Outstanding, Amount | $ 51.5 |
Uncommitted Credit Facility of $160 Million | Entergy Texas [Member] |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 160.0 |
Line of Credit Facility, Commitment Fee Percentage | 1.05% |
Letters of Credit Outstanding, Amount | $ 0.0 |
Minimum [Member] | Entergy Arkansas [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.075% |
Minimum [Member] | Entergy Mississippi [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.075% |
Minimum [Member] | Entergy Louisiana [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.075% |
Minimum [Member] | Entergy New Orleans [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.075% |
Minimum [Member] | Entergy Texas [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.075% |
Maximum [Member] | Entergy Arkansas [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.375% |
Maximum [Member] | Entergy Mississippi [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.375% |
Maximum [Member] | Entergy Louisiana [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.375% |
Maximum [Member] | Entergy New Orleans [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.375% |
Maximum [Member] | Entergy Texas [Member] |  |
Line of Credit Facility, Commitment Fee Percentage | 0.375% |

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-15 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-12 + Details
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