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 Company VIE Credit Facilities) (Details) $ in Millions	9 Months Ended
	Sep. 30, 2026 USD ($)
Credit Facility of $80 Million | Entergy Arkansas VIE
Debt Instrument [Line Items]
Amount of Facility	$ 80.0
Weighted- Average Interest Rate on Borrowings	4.75%
Borrowings	$ 0.0
Credit Facility of $105 Million | Entergy Louisiana River Bend VIE
Debt Instrument [Line Items]
Amount of Facility	$ 105.0
Weighted- Average Interest Rate on Borrowings	4.75%
Borrowings	$ 23.8
Credit Facility of $105 Million | Entergy Louisiana Waterford VIE
Debt Instrument [Line Items]
Amount of Facility	$ 105.0
Weighted- Average Interest Rate on Borrowings	4.74%
Borrowings	$ 67.8
Credit Facility of $120 Million | System Energy VIE
Debt Instrument [Line Items]
Amount of Facility	$ 120.0
Weighted- Average Interest Rate on Borrowings	4.77%
Borrowings	$ 37.9