Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Notes Payable By Variable Interest Entities) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Entergy Arkansas VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date	Jun. 30, 2025
System Energy VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date	Jun. 30, 2025
Entergy Louisiana River Bend VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date	Jun. 30, 2025
Entergy Louisiana Waterford VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date	Jun. 30, 2025
VIE Notes Payable, 2.51% Series V Due June 2027 [Member] | Entergy Louisiana River Bend VIE [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.51%
Notes Payable, Noncurrent	$ 70
VIE Notes Payable, 2.51% Series V Due June 2027 [Member] | Entergy Louisiana Waterford VIE [Member]
Debt Instrument [Line Items]
Notes Payable, Noncurrent	$ 70
VIE Notes Payable, 1.84% Series N Due July 2026 [Member] | Entergy Arkansas VIE [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.84%
Notes Payable, Noncurrent	$ 90
VIE Notes Payable, 2.05% Series K Due September 2027 [Member] | System Energy VIE [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.05%
Notes Payable, Noncurrent	$ 90
Variable Interest Entity Notes, Five Point Nine Four Percent Series J due September 2026 [Member] | Entergy Louisiana Waterford VIE [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.94%