Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of Line of Credit Facilities) (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Letters of Credit Outstanding, Amount	$ 3.0	$ 2.0
Credit Facility of $3 Billion
Line of Credit Facility, Maximum Borrowing Capacity	3,000.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 4.0
Line of Credit Facility, Interest Rate at Period End	6.94%
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	$ 2,996.0
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	7.29%
Entergy Arkansas [Member] | Credit Facility of $300 Million
Line of Credit Facility, Maximum Borrowing Capacity	$ 300.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 0.0
Line of Credit Facility, Interest Rate at Period End	6.57%
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, Maximum Borrowing Capacity	400.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 0.0
Line of Credit Facility, Interest Rate at Period End	6.69%
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, Maximum Borrowing Capacity	300.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 0.0
Line of Credit Facility, Interest Rate at Period End	6.57%
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 5.0
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	7.07%
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 $300 Million
Line of Credit Facility, Maximum Borrowing Capacity	300.0
Long-Term Line of Credit	0.0
Letters of Credit Outstanding, Amount	$ 1.1
Line of Credit Facility, Interest Rate at Period End	6.69%
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%