Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of Line of Credit Facilities) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Letters of Credit Outstanding, Amount	$ 2.0	$ 2.0
Credit Facility of $3.5 Billion [Member]
Line of Credit Facility, Maximum Borrowing Capacity	3,500.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 4.0
Line of Credit Facility, Interest Rate at Period End	6.93%
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 20.0
Line of Credit Facility, Commitment Fee Percentage	0.225%
Line of Credit Facility, Remaining Borrowing Capacity	$ 3,496.0
Entergy Arkansas [Member] | Credit Facility of $25 Million [Member]
Line of Credit Facility, Maximum Borrowing Capacity	25.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 0.0
Line of Credit Facility, Interest Rate at Period End	7.27%
Entergy Arkansas [Member] | Credit Facility of $150 Million [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 150.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 0.0
Line of Credit Facility, Interest Rate at Period End	6.55%
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 $350 Million [Member]
Line of Credit Facility, Maximum Borrowing Capacity	350.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 0.0
Line of Credit Facility, Interest Rate at Period End	6.68%
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 15.0
Entergy Louisiana [Member] | Credit Facility of $350 Million [Member]
Line of Credit Facility, Maximum Borrowing Capacity	350.0
Entergy Mississippi [Member] | Credit Facility of $150 Million [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 150.0
Line of Credit Facility, Interest Rate During Period	6.55%
Long-Term Line of Credit	$ 100.0
Letters of Credit Outstanding, Amount	0.0
Entergy New Orleans [Member] | Credit Facility of $25 Million [Member]
Line of Credit Facility, Maximum Borrowing Capacity	25.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 0.0
Line of Credit Facility, Interest Rate at Period End	7.05%
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 10.0
Entergy Texas [Member] | Credit Facility of $150 Million [Member]
Line of Credit Facility, Maximum Borrowing Capacity	150.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 1.1
Line of Credit Facility, Interest Rate at Period End	6.68%
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 30.0
Maximum [Member] | Entergy Arkansas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Maximum [Member] | Entergy Louisiana [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Maximum [Member] | Entergy Mississippi [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Maximum [Member] | Entergy New Orleans [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Maximum [Member] | Entergy Texas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Minimum [Member] | Entergy Arkansas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Minimum [Member] | Entergy Louisiana [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Minimum [Member] | Entergy Mississippi [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Minimum [Member] | Entergy New Orleans [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Minimum [Member] | Entergy Texas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%