Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Narrative) (Details)	12 Months Ended
	Dec. 31, 2023 USD ($)
Commercial Paper Program [Member]
Commercial Paper program limit	$ 2,000,000,000
Commercial Paper	$ 1,138,100,000
Debt, Weighted Average Interest Rate	5.44%
Entergy Louisiana Waterford VIE [Member]
Line of credit facility commitment fee as a percentage of undrawn commitment amount	0.10%
Entergy Louisiana River Bend VIE [Member]
Line of credit facility commitment fee as a percentage of undrawn commitment amount	0.10%
System Energy VIE [Member]
Line of credit facility commitment fee as a percentage of undrawn commitment amount	0.10%
Entergy Arkansas VIE [Member]
Line of credit facility commitment fee as a percentage of undrawn commitment amount	0.10%
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Texas [Member]
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 30,000,000
Line of Credit Facility, Maximum Borrowing Capacity	150,000,000
Long-Term Line of Credit	0
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Arkansas [Member]
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	5,000,000
Line of Credit Facility, Maximum Borrowing Capacity	150,000,000
Long-Term Line of Credit	0
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Mississippi [Member]
Line of Credit Facility, Maximum Borrowing Capacity	150,000,000
Long-Term Line of Credit	0
Credit Facility Of Three Hundred and Fifty Million [Member] | Entergy Louisiana [Member]
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	15,000,000
Line of Credit Facility, Maximum Borrowing Capacity	350,000,000
Long-Term Line of Credit	0
Credit Facility Of Twenty Five Million [Member] | Entergy Arkansas [Member]
Line of Credit Facility, Maximum Borrowing Capacity	25,000,000
Long-Term Line of Credit	0
Credit Facility Of Twenty Five Million [Member] | Entergy New Orleans [Member]
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	10,000,000
Line of Credit Facility, Maximum Borrowing Capacity	25,000,000
Long-Term Line of Credit	$ 0
Credit Facility of Three Point Five Billion [Member]
Line of Credit Facility, Commitment Fee Percentage	0.225%
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit	$ 20,000,000
Line of Credit Facility, Maximum Borrowing Capacity	3,500,000,000
Long-Term Line of Credit	$ 0
Credit Facility of Three Point Five Billion [Member] | Credit Facility [Member]
Debt, Weighted Average Interest Rate	6.52%
Credit Facility of One Hundred and Thirty Nine Million [Member] | Entergy Nuclear Vermont Yankee [Member]
Line of Credit Facility, Commitment Fee Percentage	0.20%
Line of Credit Facility, Maximum Borrowing Capacity	$ 139,000,000
Debt, Weighted Average Interest Rate	6.61%
Long-Term Line of Credit	$ 139,000,000
Credit Facility of Eighty Million [Member] | Entergy Louisiana [Member]
Letters of credit posted to cover financial transmission right exposure	500,000
Credit Facility of Eighty Million [Member] | Entergy Texas [Member]
Letters of credit posted to cover financial transmission right exposure	100,000
Credit Facility of Eighty Million [Member] | Entergy Arkansas [Member]
Letters of credit posted to cover financial transmission right exposure	1,200,000
Credit Facility of Eighty Million [Member] | Entergy Arkansas VIE [Member]
Long-Term Line of Credit	$ 70,200,000
Minimum [Member] | Entergy Louisiana [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Minimum [Member] | Entergy Texas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
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 New Orleans [Member]
Line of Credit Facility, Commitment Fee Percentage	0.075%
Maximum [Member] | Entergy Louisiana [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Public Utilities, Approved Debt Capital Structure, Percentage	65.00%
Consolidated debt ratio of lessees total capitalization	70.00%
Maximum [Member] | Entergy Texas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Public Utilities, Approved Debt Capital Structure, Percentage	65.00%
Maximum [Member] | System Energy [Member]
Public Utilities, Approved Debt Capital Structure, Percentage	65.00%
Consolidated debt ratio of lessees total capitalization	70.00%
Maximum [Member] | Entergy Arkansas [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Public Utilities, Approved Debt Capital Structure, Percentage	65.00%
Consolidated debt ratio of lessees total capitalization	70.00%
Maximum [Member] | Entergy Mississippi [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Public Utilities, Approved Debt Capital Structure, Percentage	65.00%
Maximum [Member] | Entergy New Orleans [Member]
Line of Credit Facility, Commitment Fee Percentage	0.375%
Public Utilities, Approved Debt Capital Structure, Percentage	65.00%
Maximum [Member] | Credit Facility of Three Point Five Billion [Member]
Consolidated debt ratio	65.00%