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Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Tables) | 9 Months Ended
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Sep. 30, 2025
Schedule of Line of Credit Facilities [Table Text Block] | The following is a summary of the amounts outstanding and capacity available under the credit facility as of September 30, 2025:
Capacity |  | Borrowings |  | Letters of Credit |  | Capacity Available
(In Millions)
$3,000 |  | $— |  | $3 |  | $2,997
Schedule of Long-Term Debt Instruments [Table Text Block] | The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of September 30, 2025 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $29,033,259 |  |  | $27,046,970 |
Entergy Arkansas | $5,431,589 |  |  | $4,964,743 |
Entergy Louisiana | $10,390,778 |  |  | $9,582,488 |
Entergy Mississippi | $3,020,984 |  |  | $2,782,423 |
Entergy New Orleans | $657,870 |  |  | $623,753 |
Entergy Texas | $4,039,013 |  |  | $3,791,754 |
System Energy | $1,090,762 |  |  | $1,106,257 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein. The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of December 31, 2024 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $27,991,595 |  |  | $25,181,802 |
Entergy Arkansas | $5,122,494 |  |  | $4,546,643 |
Entergy Louisiana | $9,866,453 |  |  | $8,751,266 |
Entergy Mississippi | $2,427,073 |  |  | $2,116,246 |
Entergy New Orleans | $735,467 |  |  | $697,466 |
Entergy Texas | $3,552,443 |  |  | $3,176,230 |
System Energy | $1,089,736 |  |  | $1,063,946 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein.
Entergy Arkansas [Member] |
Schedule of Line of Credit Facilities [Table Text Block] | Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, Entergy New Orleans, and Entergy Texas each had credit facilities available as of September 30, 2025 as follows:
Company |  | Expiration Date |  | Amount of Facility |  | Interest Rate (a) |  | Amount Drawn as of September 30, 2025 |  | Letters of Credit Outstanding as of September 30, 2025
Entergy Arkansas |  | April 2026 |  | $25 million (b) |  | 6.11% |  | $— |  | $—
Entergy Arkansas |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy Louisiana |  | June 2030 |  | $400 million (c) |  | 5.51% |  | $— |  | $—
Entergy Mississippi |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy New Orleans |  | June 2027 |  | $25 million (c) |  | 5.89% |  | $— |  | $—
Entergy Texas |  | June 2030 |  | $300 million (c) |  | 5.51% |  | $— |  | $1.1 million
(a)The interest rate is the estimated interest rate as of September 30, 2025 that would have been applied to outstanding borrowings under the facility. (b)Borrowings under this Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable at Entergy Arkansas’s option. (c)The credit facility includes fronting commitments for the issuance of letters of credit against a portion of the borrowing capacity of the facility as follows: $5 million for Entergy Arkansas; $15 million for Entergy Louisiana; $5 million for Entergy Mississippi; $10 million for Entergy New Orleans; and $25 million for Entergy Texas.
Schedule of uncommitted standby letter of credit facilities [Table Text Block] | The following is a summary of the uncommitted standby letter of credit facilities as of September 30, 2025:
Company |  | Amount of Uncommitted Facility |  | Letter of Credit Fee |  | Letters of Credit Issued as of September 30, 2025 (a)
Entergy Arkansas |  | $25 million |  | 0.78% |  | $19.8 million
Entergy Arkansas |  | $75 million |  | 0.50% |  | $15.6 million
Entergy Louisiana |  | $125 million |  | 0.78% |  | $117.0 million
Entergy Louisiana |  | $45 million |  | 0.50% |  | $45.0 million
Entergy Mississippi |  | $65 million |  | 0.78% |  | $62.2 million (b)
Entergy Mississippi |  | $65 million |  | 0.50% |  | $43.0 million
Entergy New Orleans |  | $1 million |  | 1.625% |  | $0.5 million
Entergy Texas |  | $150 million |  | 1.250% |  | $51.5 million
Entergy Texas |  | $160 million |  | 1.05% |  | $—
(a)As of September 30, 2025, letters of credit posted with MISO covered financial transmission rights exposure of $2.1 million for Entergy Arkansas, $0.5 million for Entergy Louisiana, and $1.2 million for Entergy Mississippi. See Note 8 to the financial statements herein for discussion of financial transmission rights. (b)As of September 30, 2025, the letters of credit issued for Entergy Mississippi include $60.9 million in MISO letters of credit and $1.3 million in non-MISO letters of credit outstanding under this facility.
Schedule of Short-Term Debt [Table Text Block] | The following are the FERC-authorized limits for short-term borrowings and the outstanding short-term borrowings as of September 30, 2025 (aggregating both internal and external short-term borrowings) for the Registrant Subsidiaries:
| Authorized |  | Borrowings
| (In Millions)
Entergy Arkansas | $250 |  | $—
Entergy Louisiana | $450 |  | $—
Entergy Mississippi | $200 |  | $—
Entergy New Orleans | $150 |  | $—
Entergy Texas | $200 |  | $142
System Energy | $200 |  | $—
Schedule of nuclear fuel company VIE credit facilities [Table Text Block] | To finance the acquisition and ownership of nuclear fuel, the nuclear fuel company VIEs have credit facilities and three of the four VIEs also issue commercial paper, details of which follow as of September 30, 2025:
Company |  | Expiration Date |  | Amount of Facility |  | Weighted- Average Interest Rate on Borrowings (a) |  | Amount Outstanding as of September 30, 2025
|  |  |  | (Dollars in Millions)
Entergy Arkansas VIE |  | June 2027 |  | $80 |  | 5.43% |  | $24.1
Entergy Louisiana River Bend VIE |  | June 2027 |  | $105 |  | 5.43% |  | $61.4
Entergy Louisiana Waterford VIE |  | June 2027 |  | $105 |  | 5.43% |  | $58.4
System Energy VIE |  | June 2027 |  | $120 |  | 5.43% |  | $39.6
(a)Includes letter of credit fees and bank fronting fees on commercial paper issuances by the nuclear fuel company VIEs for Entergy Arkansas, Entergy Louisiana, and System Energy. The nuclear fuel company VIE for Entergy Louisiana River Bend does not issue commercial paper, but borrows directly on its bank credit facility.
Schedule of nuclear fuel company VIE notes payable [Table Text Block] | The nuclear fuel company VIEs had notes payable that were included in debt on the respective balance sheets as of September 30, 2025 as follows:
Company |  | Description |  | Amount
Entergy Arkansas VIE |  | 1.84% Series N due July 2026 |  | $90 million
Entergy Arkansas VIE |  | 5.54% Series O due May 2029 |  | $70 million
Entergy Louisiana River Bend VIE |  | 2.51% Series V due June 2027 |  | $70 million
Entergy Louisiana Waterford VIE |  | 5.94% Series J due September 2026 |  | $70 million
System Energy VIE |  | 2.05% Series K due September 2027 |  | $90 million
Schedule of Long-Term Debt Instruments [Table Text Block] | The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of September 30, 2025 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $29,033,259 |  |  | $27,046,970 |
Entergy Arkansas | $5,431,589 |  |  | $4,964,743 |
Entergy Louisiana | $10,390,778 |  |  | $9,582,488 |
Entergy Mississippi | $3,020,984 |  |  | $2,782,423 |
Entergy New Orleans | $657,870 |  |  | $623,753 |
Entergy Texas | $4,039,013 |  |  | $3,791,754 |
System Energy | $1,090,762 |  |  | $1,106,257 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein. The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of December 31, 2024 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $27,991,595 |  |  | $25,181,802 |
Entergy Arkansas | $5,122,494 |  |  | $4,546,643 |
Entergy Louisiana | $9,866,453 |  |  | $8,751,266 |
Entergy Mississippi | $2,427,073 |  |  | $2,116,246 |
Entergy New Orleans | $735,467 |  |  | $697,466 |
Entergy Texas | $3,552,443 |  |  | $3,176,230 |
System Energy | $1,089,736 |  |  | $1,063,946 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein.
Entergy Louisiana [Member] |
Schedule of Line of Credit Facilities [Table Text Block] | Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, Entergy New Orleans, and Entergy Texas each had credit facilities available as of September 30, 2025 as follows:
Company |  | Expiration Date |  | Amount of Facility |  | Interest Rate (a) |  | Amount Drawn as of September 30, 2025 |  | Letters of Credit Outstanding as of September 30, 2025
Entergy Arkansas |  | April 2026 |  | $25 million (b) |  | 6.11% |  | $— |  | $—
Entergy Arkansas |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy Louisiana |  | June 2030 |  | $400 million (c) |  | 5.51% |  | $— |  | $—
Entergy Mississippi |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy New Orleans |  | June 2027 |  | $25 million (c) |  | 5.89% |  | $— |  | $—
Entergy Texas |  | June 2030 |  | $300 million (c) |  | 5.51% |  | $— |  | $1.1 million
(a)The interest rate is the estimated interest rate as of September 30, 2025 that would have been applied to outstanding borrowings under the facility. (b)Borrowings under this Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable at Entergy Arkansas’s option. (c)The credit facility includes fronting commitments for the issuance of letters of credit against a portion of the borrowing capacity of the facility as follows: $5 million for Entergy Arkansas; $15 million for Entergy Louisiana; $5 million for Entergy Mississippi; $10 million for Entergy New Orleans; and $25 million for Entergy Texas.
Schedule of uncommitted standby letter of credit facilities [Table Text Block] | The following is a summary of the uncommitted standby letter of credit facilities as of September 30, 2025:
Company |  | Amount of Uncommitted Facility |  | Letter of Credit Fee |  | Letters of Credit Issued as of September 30, 2025 (a)
Entergy Arkansas |  | $25 million |  | 0.78% |  | $19.8 million
Entergy Arkansas |  | $75 million |  | 0.50% |  | $15.6 million
Entergy Louisiana |  | $125 million |  | 0.78% |  | $117.0 million
Entergy Louisiana |  | $45 million |  | 0.50% |  | $45.0 million
Entergy Mississippi |  | $65 million |  | 0.78% |  | $62.2 million (b)
Entergy Mississippi |  | $65 million |  | 0.50% |  | $43.0 million
Entergy New Orleans |  | $1 million |  | 1.625% |  | $0.5 million
Entergy Texas |  | $150 million |  | 1.250% |  | $51.5 million
Entergy Texas |  | $160 million |  | 1.05% |  | $—
(a)As of September 30, 2025, letters of credit posted with MISO covered financial transmission rights exposure of $2.1 million for Entergy Arkansas, $0.5 million for Entergy Louisiana, and $1.2 million for Entergy Mississippi. See Note 8 to the financial statements herein for discussion of financial transmission rights. (b)As of September 30, 2025, the letters of credit issued for Entergy Mississippi include $60.9 million in MISO letters of credit and $1.3 million in non-MISO letters of credit outstanding under this facility.
Schedule of Short-Term Debt [Table Text Block] | The following are the FERC-authorized limits for short-term borrowings and the outstanding short-term borrowings as of September 30, 2025 (aggregating both internal and external short-term borrowings) for the Registrant Subsidiaries:
| Authorized |  | Borrowings
| (In Millions)
Entergy Arkansas | $250 |  | $—
Entergy Louisiana | $450 |  | $—
Entergy Mississippi | $200 |  | $—
Entergy New Orleans | $150 |  | $—
Entergy Texas | $200 |  | $142
System Energy | $200 |  | $—
Schedule of nuclear fuel company VIE credit facilities [Table Text Block] | To finance the acquisition and ownership of nuclear fuel, the nuclear fuel company VIEs have credit facilities and three of the four VIEs also issue commercial paper, details of which follow as of September 30, 2025:
Company |  | Expiration Date |  | Amount of Facility |  | Weighted- Average Interest Rate on Borrowings (a) |  | Amount Outstanding as of September 30, 2025
|  |  |  | (Dollars in Millions)
Entergy Arkansas VIE |  | June 2027 |  | $80 |  | 5.43% |  | $24.1
Entergy Louisiana River Bend VIE |  | June 2027 |  | $105 |  | 5.43% |  | $61.4
Entergy Louisiana Waterford VIE |  | June 2027 |  | $105 |  | 5.43% |  | $58.4
System Energy VIE |  | June 2027 |  | $120 |  | 5.43% |  | $39.6
(a)Includes letter of credit fees and bank fronting fees on commercial paper issuances by the nuclear fuel company VIEs for Entergy Arkansas, Entergy Louisiana, and System Energy. The nuclear fuel company VIE for Entergy Louisiana River Bend does not issue commercial paper, but borrows directly on its bank credit facility.
Schedule of nuclear fuel company VIE notes payable [Table Text Block] | The nuclear fuel company VIEs had notes payable that were included in debt on the respective balance sheets as of September 30, 2025 as follows:
Company |  | Description |  | Amount
Entergy Arkansas VIE |  | 1.84% Series N due July 2026 |  | $90 million
Entergy Arkansas VIE |  | 5.54% Series O due May 2029 |  | $70 million
Entergy Louisiana River Bend VIE |  | 2.51% Series V due June 2027 |  | $70 million
Entergy Louisiana Waterford VIE |  | 5.94% Series J due September 2026 |  | $70 million
System Energy VIE |  | 2.05% Series K due September 2027 |  | $90 million
Schedule of Long-Term Debt Instruments [Table Text Block] | The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of September 30, 2025 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $29,033,259 |  |  | $27,046,970 |
Entergy Arkansas | $5,431,589 |  |  | $4,964,743 |
Entergy Louisiana | $10,390,778 |  |  | $9,582,488 |
Entergy Mississippi | $3,020,984 |  |  | $2,782,423 |
Entergy New Orleans | $657,870 |  |  | $623,753 |
Entergy Texas | $4,039,013 |  |  | $3,791,754 |
System Energy | $1,090,762 |  |  | $1,106,257 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein. The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of December 31, 2024 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $27,991,595 |  |  | $25,181,802 |
Entergy Arkansas | $5,122,494 |  |  | $4,546,643 |
Entergy Louisiana | $9,866,453 |  |  | $8,751,266 |
Entergy Mississippi | $2,427,073 |  |  | $2,116,246 |
Entergy New Orleans | $735,467 |  |  | $697,466 |
Entergy Texas | $3,552,443 |  |  | $3,176,230 |
System Energy | $1,089,736 |  |  | $1,063,946 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein.
Entergy Mississippi [Member] |
Schedule of Line of Credit Facilities [Table Text Block] | Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, Entergy New Orleans, and Entergy Texas each had credit facilities available as of September 30, 2025 as follows:
Company |  | Expiration Date |  | Amount of Facility |  | Interest Rate (a) |  | Amount Drawn as of September 30, 2025 |  | Letters of Credit Outstanding as of September 30, 2025
Entergy Arkansas |  | April 2026 |  | $25 million (b) |  | 6.11% |  | $— |  | $—
Entergy Arkansas |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy Louisiana |  | June 2030 |  | $400 million (c) |  | 5.51% |  | $— |  | $—
Entergy Mississippi |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy New Orleans |  | June 2027 |  | $25 million (c) |  | 5.89% |  | $— |  | $—
Entergy Texas |  | June 2030 |  | $300 million (c) |  | 5.51% |  | $— |  | $1.1 million
(a)The interest rate is the estimated interest rate as of September 30, 2025 that would have been applied to outstanding borrowings under the facility. (b)Borrowings under this Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable at Entergy Arkansas’s option. (c)The credit facility includes fronting commitments for the issuance of letters of credit against a portion of the borrowing capacity of the facility as follows: $5 million for Entergy Arkansas; $15 million for Entergy Louisiana; $5 million for Entergy Mississippi; $10 million for Entergy New Orleans; and $25 million for Entergy Texas.
Schedule of uncommitted standby letter of credit facilities [Table Text Block] | The following is a summary of the uncommitted standby letter of credit facilities as of September 30, 2025:
Company |  | Amount of Uncommitted Facility |  | Letter of Credit Fee |  | Letters of Credit Issued as of September 30, 2025 (a)
Entergy Arkansas |  | $25 million |  | 0.78% |  | $19.8 million
Entergy Arkansas |  | $75 million |  | 0.50% |  | $15.6 million
Entergy Louisiana |  | $125 million |  | 0.78% |  | $117.0 million
Entergy Louisiana |  | $45 million |  | 0.50% |  | $45.0 million
Entergy Mississippi |  | $65 million |  | 0.78% |  | $62.2 million (b)
Entergy Mississippi |  | $65 million |  | 0.50% |  | $43.0 million
Entergy New Orleans |  | $1 million |  | 1.625% |  | $0.5 million
Entergy Texas |  | $150 million |  | 1.250% |  | $51.5 million
Entergy Texas |  | $160 million |  | 1.05% |  | $—
(a)As of September 30, 2025, letters of credit posted with MISO covered financial transmission rights exposure of $2.1 million for Entergy Arkansas, $0.5 million for Entergy Louisiana, and $1.2 million for Entergy Mississippi. See Note 8 to the financial statements herein for discussion of financial transmission rights. (b)As of September 30, 2025, the letters of credit issued for Entergy Mississippi include $60.9 million in MISO letters of credit and $1.3 million in non-MISO letters of credit outstanding under this facility.
Schedule of Short-Term Debt [Table Text Block] | The following are the FERC-authorized limits for short-term borrowings and the outstanding short-term borrowings as of September 30, 2025 (aggregating both internal and external short-term borrowings) for the Registrant Subsidiaries:
| Authorized |  | Borrowings
| (In Millions)
Entergy Arkansas | $250 |  | $—
Entergy Louisiana | $450 |  | $—
Entergy Mississippi | $200 |  | $—
Entergy New Orleans | $150 |  | $—
Entergy Texas | $200 |  | $142
System Energy | $200 |  | $—
Schedule of Long-Term Debt Instruments [Table Text Block] | The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of September 30, 2025 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $29,033,259 |  |  | $27,046,970 |
Entergy Arkansas | $5,431,589 |  |  | $4,964,743 |
Entergy Louisiana | $10,390,778 |  |  | $9,582,488 |
Entergy Mississippi | $3,020,984 |  |  | $2,782,423 |
Entergy New Orleans | $657,870 |  |  | $623,753 |
Entergy Texas | $4,039,013 |  |  | $3,791,754 |
System Energy | $1,090,762 |  |  | $1,106,257 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein. The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of December 31, 2024 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $27,991,595 |  |  | $25,181,802 |
Entergy Arkansas | $5,122,494 |  |  | $4,546,643 |
Entergy Louisiana | $9,866,453 |  |  | $8,751,266 |
Entergy Mississippi | $2,427,073 |  |  | $2,116,246 |
Entergy New Orleans | $735,467 |  |  | $697,466 |
Entergy Texas | $3,552,443 |  |  | $3,176,230 |
System Energy | $1,089,736 |  |  | $1,063,946 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein.
Entergy New Orleans [Member] |
Schedule of Line of Credit Facilities [Table Text Block] | Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, Entergy New Orleans, and Entergy Texas each had credit facilities available as of September 30, 2025 as follows:
Company |  | Expiration Date |  | Amount of Facility |  | Interest Rate (a) |  | Amount Drawn as of September 30, 2025 |  | Letters of Credit Outstanding as of September 30, 2025
Entergy Arkansas |  | April 2026 |  | $25 million (b) |  | 6.11% |  | $— |  | $—
Entergy Arkansas |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy Louisiana |  | June 2030 |  | $400 million (c) |  | 5.51% |  | $— |  | $—
Entergy Mississippi |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy New Orleans |  | June 2027 |  | $25 million (c) |  | 5.89% |  | $— |  | $—
Entergy Texas |  | June 2030 |  | $300 million (c) |  | 5.51% |  | $— |  | $1.1 million
(a)The interest rate is the estimated interest rate as of September 30, 2025 that would have been applied to outstanding borrowings under the facility. (b)Borrowings under this Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable at Entergy Arkansas’s option. (c)The credit facility includes fronting commitments for the issuance of letters of credit against a portion of the borrowing capacity of the facility as follows: $5 million for Entergy Arkansas; $15 million for Entergy Louisiana; $5 million for Entergy Mississippi; $10 million for Entergy New Orleans; and $25 million for Entergy Texas.
Schedule of uncommitted standby letter of credit facilities [Table Text Block] | The following is a summary of the uncommitted standby letter of credit facilities as of September 30, 2025:
Company |  | Amount of Uncommitted Facility |  | Letter of Credit Fee |  | Letters of Credit Issued as of September 30, 2025 (a)
Entergy Arkansas |  | $25 million |  | 0.78% |  | $19.8 million
Entergy Arkansas |  | $75 million |  | 0.50% |  | $15.6 million
Entergy Louisiana |  | $125 million |  | 0.78% |  | $117.0 million
Entergy Louisiana |  | $45 million |  | 0.50% |  | $45.0 million
Entergy Mississippi |  | $65 million |  | 0.78% |  | $62.2 million (b)
Entergy Mississippi |  | $65 million |  | 0.50% |  | $43.0 million
Entergy New Orleans |  | $1 million |  | 1.625% |  | $0.5 million
Entergy Texas |  | $150 million |  | 1.250% |  | $51.5 million
Entergy Texas |  | $160 million |  | 1.05% |  | $—
(a)As of September 30, 2025, letters of credit posted with MISO covered financial transmission rights exposure of $2.1 million for Entergy Arkansas, $0.5 million for Entergy Louisiana, and $1.2 million for Entergy Mississippi. See Note 8 to the financial statements herein for discussion of financial transmission rights. (b)As of September 30, 2025, the letters of credit issued for Entergy Mississippi include $60.9 million in MISO letters of credit and $1.3 million in non-MISO letters of credit outstanding under this facility.
Schedule of Short-Term Debt [Table Text Block] | The following are the FERC-authorized limits for short-term borrowings and the outstanding short-term borrowings as of September 30, 2025 (aggregating both internal and external short-term borrowings) for the Registrant Subsidiaries:
| Authorized |  | Borrowings
| (In Millions)
Entergy Arkansas | $250 |  | $—
Entergy Louisiana | $450 |  | $—
Entergy Mississippi | $200 |  | $—
Entergy New Orleans | $150 |  | $—
Entergy Texas | $200 |  | $142
System Energy | $200 |  | $—
Schedule of Long-Term Debt Instruments [Table Text Block] | The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of September 30, 2025 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $29,033,259 |  |  | $27,046,970 |
Entergy Arkansas | $5,431,589 |  |  | $4,964,743 |
Entergy Louisiana | $10,390,778 |  |  | $9,582,488 |
Entergy Mississippi | $3,020,984 |  |  | $2,782,423 |
Entergy New Orleans | $657,870 |  |  | $623,753 |
Entergy Texas | $4,039,013 |  |  | $3,791,754 |
System Energy | $1,090,762 |  |  | $1,106,257 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein. The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of December 31, 2024 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $27,991,595 |  |  | $25,181,802 |
Entergy Arkansas | $5,122,494 |  |  | $4,546,643 |
Entergy Louisiana | $9,866,453 |  |  | $8,751,266 |
Entergy Mississippi | $2,427,073 |  |  | $2,116,246 |
Entergy New Orleans | $735,467 |  |  | $697,466 |
Entergy Texas | $3,552,443 |  |  | $3,176,230 |
System Energy | $1,089,736 |  |  | $1,063,946 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein.
Entergy Texas [Member] |
Schedule of Line of Credit Facilities [Table Text Block] | Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, Entergy New Orleans, and Entergy Texas each had credit facilities available as of September 30, 2025 as follows:
Company |  | Expiration Date |  | Amount of Facility |  | Interest Rate (a) |  | Amount Drawn as of September 30, 2025 |  | Letters of Credit Outstanding as of September 30, 2025
Entergy Arkansas |  | April 2026 |  | $25 million (b) |  | 6.11% |  | $— |  | $—
Entergy Arkansas |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy Louisiana |  | June 2030 |  | $400 million (c) |  | 5.51% |  | $— |  | $—
Entergy Mississippi |  | June 2030 |  | $300 million (c) |  | 5.39% |  | $— |  | $—
Entergy New Orleans |  | June 2027 |  | $25 million (c) |  | 5.89% |  | $— |  | $—
Entergy Texas |  | June 2030 |  | $300 million (c) |  | 5.51% |  | $— |  | $1.1 million
(a)The interest rate is the estimated interest rate as of September 30, 2025 that would have been applied to outstanding borrowings under the facility. (b)Borrowings under this Entergy Arkansas credit facility may be secured by a security interest in its accounts receivable at Entergy Arkansas’s option. (c)The credit facility includes fronting commitments for the issuance of letters of credit against a portion of the borrowing capacity of the facility as follows: $5 million for Entergy Arkansas; $15 million for Entergy Louisiana; $5 million for Entergy Mississippi; $10 million for Entergy New Orleans; and $25 million for Entergy Texas.
Schedule of uncommitted standby letter of credit facilities [Table Text Block] | The following is a summary of the uncommitted standby letter of credit facilities as of September 30, 2025:
Company |  | Amount of Uncommitted Facility |  | Letter of Credit Fee |  | Letters of Credit Issued as of September 30, 2025 (a)
Entergy Arkansas |  | $25 million |  | 0.78% |  | $19.8 million
Entergy Arkansas |  | $75 million |  | 0.50% |  | $15.6 million
Entergy Louisiana |  | $125 million |  | 0.78% |  | $117.0 million
Entergy Louisiana |  | $45 million |  | 0.50% |  | $45.0 million
Entergy Mississippi |  | $65 million |  | 0.78% |  | $62.2 million (b)
Entergy Mississippi |  | $65 million |  | 0.50% |  | $43.0 million
Entergy New Orleans |  | $1 million |  | 1.625% |  | $0.5 million
Entergy Texas |  | $150 million |  | 1.250% |  | $51.5 million
Entergy Texas |  | $160 million |  | 1.05% |  | $—
(a)As of September 30, 2025, letters of credit posted with MISO covered financial transmission rights exposure of $2.1 million for Entergy Arkansas, $0.5 million for Entergy Louisiana, and $1.2 million for Entergy Mississippi. See Note 8 to the financial statements herein for discussion of financial transmission rights. (b)As of September 30, 2025, the letters of credit issued for Entergy Mississippi include $60.9 million in MISO letters of credit and $1.3 million in non-MISO letters of credit outstanding under this facility.
Schedule of Short-Term Debt [Table Text Block] | The following are the FERC-authorized limits for short-term borrowings and the outstanding short-term borrowings as of September 30, 2025 (aggregating both internal and external short-term borrowings) for the Registrant Subsidiaries:
| Authorized |  | Borrowings
| (In Millions)
Entergy Arkansas | $250 |  | $—
Entergy Louisiana | $450 |  | $—
Entergy Mississippi | $200 |  | $—
Entergy New Orleans | $150 |  | $—
Entergy Texas | $200 |  | $142
System Energy | $200 |  | $—
Schedule of Long-Term Debt Instruments [Table Text Block] | The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of September 30, 2025 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $29,033,259 |  |  | $27,046,970 |
Entergy Arkansas | $5,431,589 |  |  | $4,964,743 |
Entergy Louisiana | $10,390,778 |  |  | $9,582,488 |
Entergy Mississippi | $3,020,984 |  |  | $2,782,423 |
Entergy New Orleans | $657,870 |  |  | $623,753 |
Entergy Texas | $4,039,013 |  |  | $3,791,754 |
System Energy | $1,090,762 |  |  | $1,106,257 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein. The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of December 31, 2024 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $27,991,595 |  |  | $25,181,802 |
Entergy Arkansas | $5,122,494 |  |  | $4,546,643 |
Entergy Louisiana | $9,866,453 |  |  | $8,751,266 |
Entergy Mississippi | $2,427,073 |  |  | $2,116,246 |
Entergy New Orleans | $735,467 |  |  | $697,466 |
Entergy Texas | $3,552,443 |  |  | $3,176,230 |
System Energy | $1,089,736 |  |  | $1,063,946 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein.
System Energy [Member] |
Schedule of Short-Term Debt [Table Text Block] | The following are the FERC-authorized limits for short-term borrowings and the outstanding short-term borrowings as of September 30, 2025 (aggregating both internal and external short-term borrowings) for the Registrant Subsidiaries:
| Authorized |  | Borrowings
| (In Millions)
Entergy Arkansas | $250 |  | $—
Entergy Louisiana | $450 |  | $—
Entergy Mississippi | $200 |  | $—
Entergy New Orleans | $150 |  | $—
Entergy Texas | $200 |  | $142
System Energy | $200 |  | $—
Schedule of nuclear fuel company VIE credit facilities [Table Text Block] | To finance the acquisition and ownership of nuclear fuel, the nuclear fuel company VIEs have credit facilities and three of the four VIEs also issue commercial paper, details of which follow as of September 30, 2025:
Company |  | Expiration Date |  | Amount of Facility |  | Weighted- Average Interest Rate on Borrowings (a) |  | Amount Outstanding as of September 30, 2025
|  |  |  | (Dollars in Millions)
Entergy Arkansas VIE |  | June 2027 |  | $80 |  | 5.43% |  | $24.1
Entergy Louisiana River Bend VIE |  | June 2027 |  | $105 |  | 5.43% |  | $61.4
Entergy Louisiana Waterford VIE |  | June 2027 |  | $105 |  | 5.43% |  | $58.4
System Energy VIE |  | June 2027 |  | $120 |  | 5.43% |  | $39.6
(a)Includes letter of credit fees and bank fronting fees on commercial paper issuances by the nuclear fuel company VIEs for Entergy Arkansas, Entergy Louisiana, and System Energy. The nuclear fuel company VIE for Entergy Louisiana River Bend does not issue commercial paper, but borrows directly on its bank credit facility.
Schedule of nuclear fuel company VIE notes payable [Table Text Block] | The nuclear fuel company VIEs had notes payable that were included in debt on the respective balance sheets as of September 30, 2025 as follows:
Company |  | Description |  | Amount
Entergy Arkansas VIE |  | 1.84% Series N due July 2026 |  | $90 million
Entergy Arkansas VIE |  | 5.54% Series O due May 2029 |  | $70 million
Entergy Louisiana River Bend VIE |  | 2.51% Series V due June 2027 |  | $70 million
Entergy Louisiana Waterford VIE |  | 5.94% Series J due September 2026 |  | $70 million
System Energy VIE |  | 2.05% Series K due September 2027 |  | $90 million
Schedule of Long-Term Debt Instruments [Table Text Block] | The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of September 30, 2025 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $29,033,259 |  |  | $27,046,970 |
Entergy Arkansas | $5,431,589 |  |  | $4,964,743 |
Entergy Louisiana | $10,390,778 |  |  | $9,582,488 |
Entergy Mississippi | $3,020,984 |  |  | $2,782,423 |
Entergy New Orleans | $657,870 |  |  | $623,753 |
Entergy Texas | $4,039,013 |  |  | $3,791,754 |
System Energy | $1,090,762 |  |  | $1,106,257 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein. The book value and the fair value of long-term debt for Entergy and the Registrant Subsidiaries as of December 31, 2024 were as follows:
| Book Value of Long-Term Debt |  | Fair Value of Long-Term Debt (a)
| (In Thousands)
Entergy | $27,991,595 |  |  | $25,181,802 |
Entergy Arkansas | $5,122,494 |  |  | $4,546,643 |
Entergy Louisiana | $9,866,453 |  |  | $8,751,266 |
Entergy Mississippi | $2,427,073 |  |  | $2,116,246 |
Entergy New Orleans | $735,467 |  |  | $697,466 |
Entergy Texas | $3,552,443 |  |  | $3,176,230 |
System Energy | $1,089,736 |  |  | $1,063,946 |
(a)Fair values were classified as Level 2 in the fair value hierarchy discussed in Note 8 to the financial statements herein.

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