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Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of Short-Term Debt) (Details) $ in Millions | Mar. 31, 2025 USD ($)
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Entergy Arkansas [Member] |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Authorized Short Term Borrowings | $ 250
Short term borrowings, outstanding | 0
Entergy Arkansas [Member] | Credit Facility of $300 Million |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit | 5
Entergy Louisiana [Member] |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Authorized Short Term Borrowings | 450
Short term borrowings, outstanding | 0
Entergy Mississippi [Member] |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Authorized Short Term Borrowings | 200
Short term borrowings, outstanding | 0
Entergy Mississippi [Member] | Credit Facility of $300 Million |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit | 5
Entergy New Orleans [Member] |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Authorized Short Term Borrowings | 150
Short term borrowings, outstanding | 0
Entergy Texas [Member] |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Authorized Short Term Borrowings | 200
Short term borrowings, outstanding | 0
Entergy Texas [Member] | Credit Facility of $300 Million |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit | 25
System Energy [Member] |
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract |
Authorized Short Term Borrowings | 200
Short term borrowings, outstanding | $ 0

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- Definition Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit + References No definition available. + Details
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Period Type: | instant

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- Definition Authorized short-term borrowings. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Short-term borrowings and the outstanding short-term borrowings. + References No definition available. + Details
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- Definition Short term borrowings, outstanding + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
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- Details
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- Details
Name: | dei_LegalEntityAxis=etr_EntergyLouisianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | dei_LegalEntityAxis=etr_EntergyMississippiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | dei_LegalEntityAxis=etr_EntergyNewOrleansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
Name: | dei_LegalEntityAxis=etr_EntergyTexasMember
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- Details
Name: | dei_LegalEntityAxis=etr_SystemEnergyMember
Namespace Prefix: |
Data Type: | na
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