Revolving Credit Facilities, Lines Of Credit, and Short-Term Borrowings (Schedule of Line of Credit Facilities) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Credit Facility of $3 Billion [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 3,000.0
Line of Credit Facility, Interest Rate at Period End	5.96%
Long-Term Line of Credit	$ 0.0
Letters of Credit Outstanding, Amount	3.0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	20.0
Line of Credit Facility, Remaining Borrowing Capacity	$ 2,997.0
Entergy Arkansas [Member] | Credit Facility of $25 Million [Member]
Line of Credit Facility, Expiration Date	Apr. 30, 2026
Line of Credit Facility, Maximum Borrowing Capacity	$ 25.0
Line of Credit Facility, Interest Rate at Period End	6.31%
Long-Term Line of Credit	$ 0.0
Letters of Credit Outstanding, Amount	$ 0.0
Entergy Arkansas [Member] | Credit Facility of $300 Million
Line of Credit Facility, Expiration Date	Jun. 30, 2029
Line of Credit Facility, Maximum Borrowing Capacity	$ 300.0
Line of Credit Facility, Interest Rate at Period End	5.58%
Long-Term Line of Credit	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 5.0
Entergy Louisiana [Member] | Credit Facility of $400 Million
Line of Credit Facility, Expiration Date	Jun. 30, 2029
Line of Credit Facility, Maximum Borrowing Capacity	$ 400.0
Line of Credit Facility, Interest Rate at Period End	5.71%
Long-Term Line of Credit	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 15.0
Entergy Mississippi [Member] | Credit Facility of $300 Million
Line of Credit Facility, Expiration Date	Jun. 30, 2029
Line of Credit Facility, Maximum Borrowing Capacity	$ 300.0
Line of Credit Facility, Interest Rate at Period End	5.58%
Long-Term Line of Credit	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 5.0
Entergy Texas [Member] | Credit Facility of $300 Million
Line of Credit Facility, Expiration Date	Jun. 30, 2029
Line of Credit Facility, Maximum Borrowing Capacity	$ 300.0
Line of Credit Facility, Interest Rate at Period End	5.71%
Long-Term Line of Credit	$ 0.0
Letters of Credit Outstanding, Amount	1.1
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 25.0
Entergy New Orleans [Member] | Credit Facility of $25 Million [Member]
Line of Credit Facility, Expiration Date	Jun. 30, 2027
Line of Credit Facility, Maximum Borrowing Capacity	$ 25.0
Line of Credit Facility, Interest Rate at Period End	6.08%
Long-Term Line of Credit	$ 0.0
Letters of Credit Outstanding, Amount	0.0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 10.0