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v3.25.3

Consolidated Statement of Cash Flows (Paranthetical) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2025 | Sep. 30, 2024
Proceeds from tax credit sales | $ 405,256 | $ 0
Entergy Louisiana [Member] |  |
Proceeds from tax credit sales | 146,355 | 0
Entergy Arkansas [Member] |  |
Proceeds from tax credit sales | 0 | 160,179
System Energy [Member] |  |
Proceeds from tax credit sales | $ 98,722 | $ 0

X
- Definition Proceeds from tax credit sales + References No definition available. + Details
Name: | etr_ProceedsFromTaxCreditSales
Namespace Prefix: | etr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | dei_LegalEntityAxis=etr_EntergyArkansasMember
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: |