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v3.22.2

Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Uncommitted Standby Letter of Credit Facilities to Support MISO Obligations) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
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Entergy Mississippi [Member] |  |
Letters of Credit Outstanding, Amount | $ 0.4 | $ 0.2
Non-MISO letter of credit outstanding | 7.0 |
Entergy Texas [Member] |  |
Letters of Credit Outstanding, Amount | 5.3 | $ 0.1
Credit Facility Of Twenty Five Million [Member] | Entergy Arkansas [Member] |  |
Uncommitted Credit Facility | $ 25.0 |
Letter of Credit Fee, Percentage | 0.78% |
Letters of Credit Outstanding, Amount | $ 4.5 |
Credit Facility of Fifteen Million [Member] | Entergy New Orleans [Member] |  |
Uncommitted Credit Facility | $ 15.0 |
Letter of Credit Fee, Percentage | 1.625% |
Letters of Credit Outstanding, Amount | $ 1.0 |
Credit Facility Of One Hundred Twenty Five Million [Member] | Entergy Louisiana [Member] |  |
Uncommitted Credit Facility | $ 125.0 |
Letter of Credit Fee, Percentage | 0.78% |
Letters of Credit Outstanding, Amount | $ 70.0 |
Credit Facility of Sixty Five Million [Member] | Entergy Mississippi [Member] |  |
Uncommitted Credit Facility | $ 65.0 |
Letter of Credit Fee, Percentage | 0.78% |
Letters of Credit Outstanding, Amount | $ 4.3 |
Credit Facility of Eighty Million | Entergy Texas [Member] |  |
Uncommitted Credit Facility | $ 80.0 |
Letter of Credit Fee, Percentage | 0.875% |
Letters of Credit Outstanding, Amount | $ 79.6 |

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- Definition Letter of Credit Fee, Percentage + References No definition available. + Details
Name: | etr_LetterofCreditFeePercentage
Namespace Prefix: | etr_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Non-MISO letter of credit outstanding + References No definition available. + Details
Name: | etr_NonMISOLetterOfCreditOutstanding
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Maximum borrowing capacity under the uncommitted credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References No definition available. + Details
Name: | etr_UncommittedCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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

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- Details
Name: | us-gaap_CreditFacilityAxis=etr_CreditFacilityofSixtyFiveMillionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |