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v3.22.2

Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Short-Term Borrowings And The Outstanding Short-Term Borrowings) (Details) $ in Millions | Jun. 30, 2022 USD ($)
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Entergy Arkansas [Member] |
Short-term borrowings and the outstanding short-term borrowings |
Authorized | $ 250
Borrowings | 0
Entergy Louisiana [Member] |
Short-term borrowings and the outstanding short-term borrowings |
Authorized | 450
Borrowings | 0
Entergy Mississippi [Member] |
Short-term borrowings and the outstanding short-term borrowings |
Authorized | 200
Borrowings | 0
Entergy New Orleans [Member] |
Short-term borrowings and the outstanding short-term borrowings |
Authorized | 150
Borrowings | 0
Entergy Texas [Member] |
Short-term borrowings and the outstanding short-term borrowings |
Authorized | 200
Borrowings | 0
System Energy [Member] |
Short-term borrowings and the outstanding short-term borrowings |
Authorized | 200
Borrowings | $ 0

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- Definition Authorized short-term borrowings. + References No definition available. + Details
Name: | etr_AuthorizedShortTermBorrowings
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Total amount of money pool and external short-term borrowings. + References No definition available. + Details
Name: | etr_ShortTermBorrowing
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Short-term borrowings and the outstanding short-term borrowings. + References No definition available. + Details
Name: | etr_ShortTermBorrowingsAndOutstandingShortTermBorrowingsAbstract
Namespace Prefix: | etr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=etr_EntergyArkansasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | dei_LegalEntityAxis=etr_EntergyLouisianaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyMississippiMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyNewOrleansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyTexasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=etr_SystemEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |