Revolving Credit Facilities, Lines Of Credit, and Short-Term Borrowings (Narrative) (Details) $ in Millions	12 Months Ended
Dec. 31, 2024 USD ($)
Commercial Paper [Member]
Commercial Paper program limit	$ 2,000.0
Commercial Paper	$ 927.3
Debt, Weighted Average Interest Rate	5.52%
Entergy Louisiana Waterford VIE [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Entergy Louisiana River Bend VIE [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
System Energy VIE [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Entergy Arkansas VIE [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.10%
Credit Facility of $3 Billion [Member]
Line of Credit Facility, Commitment Fee Percentage	0.225%
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 20.0
Line of Credit Facility, Maximum Borrowing Capacity	3,000.0
Long-Term Line of Credit	0.0
Credit Facility of $139 Million [Member] \| Entergy Nuclear Vermont Yankee [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 139.0
Minimum [Member] \| Entergy Louisiana [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Minimum [Member] \| Entergy Texas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
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 New Orleans [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Maximum [Member] \| Entergy Louisiana [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Consolidated debt ratio of lessees total capitalization	70.00%
Ratio of Indebtedness to Net Capital	0.65
Maximum [Member] \| Entergy Texas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Ratio of Indebtedness to Net Capital	0.65
Maximum [Member] \| System Energy [Member]
Consolidated debt ratio of lessees total capitalization	70.00%
Ratio of Indebtedness to Net Capital	0.65
Maximum [Member] \| Entergy Arkansas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Consolidated debt ratio of lessees total capitalization	70.00%
Ratio of Indebtedness to Net Capital	0.65
Maximum [Member] \| Entergy Mississippi [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Ratio of Indebtedness to Net Capital	0.65
Maximum [Member] \| Entergy New Orleans [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Ratio of Indebtedness to Net Capital	0.65
Maximum [Member] \| Credit Facility of $3 Billion [Member]
Ratio of Indebtedness to Net Capital	0.65

Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit

No definition available.

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- Definition

Commercial Paper program limit

+ References

No definition available.

+ Details

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- Definition

Consolidated debt ratio of lessees total capitalization.

+ References

No definition available.

+ Details

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Weighted average interest rate of debt outstanding.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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