Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of Short-Term Debt) (Details) $ in Millions	Jun. 30, 2024 USD ($)
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	40
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	30
System Energy [Member]
Short Term Borrowings And The Outstanding Short Term Borrowings Abstract
Authorized Short Term Borrowings	200
Short term borrowings, outstanding	$ 0