REVOLVING CREDIT FACILITIES, LINES OF CREDIT, SHORT-TERM BORROWINGS, AND LONG-TERM DEBT (Entergy Corporation, Entergy Arkansas, Entergy Louisiana, Entergy Mississippi, Entergy New Orleans, Entergy Texas, and System Energy) (Schedule of Line of Credit Facilities) (Details)	Sep. 30, 2026 USD ($)
Credit Facility
Debt Instrument [Line Items]
Capacity	$ 3,000,000,000
Interest Rate	5.40%
Borrowings	$ 0
Letters of Credit	3,000,000
Capacity Available	2,997,000,000
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	20,000,000
Credit Facility of $25 Million | ENTERGY ARKANSAS, LLC
Debt Instrument [Line Items]
Capacity	$ 25,000,000
Interest Rate	5.85%
Borrowings	$ 0
Letters of Credit	0
Credit Facility of $25 Million | ENTERGY NEW ORLEANS, LLC
Debt Instrument [Line Items]
Capacity	$ 25,000,000
Interest Rate	5.63%
Borrowings	$ 0
Letters of Credit	0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	10,000,000
Credit Facility of $300 Million | ENTERGY ARKANSAS, LLC
Debt Instrument [Line Items]
Capacity	$ 300,000,000
Interest Rate	5.03%
Borrowings	$ 0
Letters of Credit	0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	5,000,000
Credit Facility of $300 Million | ENTERGY MISSISSIPPI, LLC
Debt Instrument [Line Items]
Capacity	$ 300,000,000
Interest Rate	5.03%
Borrowings	$ 0
Letters of Credit	0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	5,000,000
Credit Facility of $300 Million | ENTERGY TEXAS, INC.
Debt Instrument [Line Items]
Capacity	$ 300,000,000
Interest Rate	5.15%
Borrowings	$ 0
Letters of Credit	1,100,000
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	25,000,000
Credit Facility of $400 Million | ENTERGY LOUISIANA, LLC
Debt Instrument [Line Items]
Capacity	$ 400,000,000
Interest Rate	5.15%
Borrowings	$ 0
Letters of Credit	0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 15,000,000