Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Schedule of uncommitted standby letter 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 $25 Million [Member] | Entergy Arkansas [Member]
Line of Credit Facility, Maximum Borrowing Capacity	25.0
Letters of Credit Outstanding, Amount	0.0
Credit Facility of $25 Million [Member] | Entergy New Orleans [Member]
Line of Credit Facility, Maximum Borrowing Capacity	25.0
Letters of Credit Outstanding, Amount	0.0
Uncommitted Credit Facility of $25 Million [Member] | Entergy Arkansas [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 25.0
Line of Credit Facility, Commitment Fee Percentage	0.78%
Letters of Credit Outstanding, Amount	$ 2.1
Uncommitted Credit Facility of $125 Million [Member] | Entergy Louisiana [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 125.0
Line of Credit Facility, Commitment Fee Percentage	0.78%
Letters of Credit Outstanding, Amount	$ 11.8
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 65.0
Line of Credit Facility, Commitment Fee Percentage	0.78%
Letters of Credit Outstanding, Amount	$ 27.6
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | MISO [Member]
Letters of Credit Outstanding, Amount	17.4
Uncommitted Credit Facility of $65 Million [Member] | Entergy Mississippi [Member] | Non-MISO [Member]
Letters of Credit Outstanding, Amount	10.2
Uncommitted Credit Facility of $15 Million [Member] | Entergy New Orleans [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 15.0
Line of Credit Facility, Commitment Fee Percentage	1.625%
Letters of Credit Outstanding, Amount	$ 0.5
Uncommitted Credit Facility of $80 Million [Member] | Entergy Texas [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 80.0
Line of Credit Facility, Commitment Fee Percentage	1.25%
Letters of Credit Outstanding, Amount	$ 76.5
Minimum [Member] | Entergy Arkansas [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 Louisiana [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%
Maximum [Member] | Entergy Arkansas [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 Louisiana [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%