Rate And Regulatory Matters (Narrative - Complaints Against System Energy) (Details) - USD ($) $ in Thousands		1 Months Ended															6 Months Ended
	Nov. 01, 2023	Sep. 30, 2024	Jul. 31, 2024	Jun. 30, 2024	May 31, 2024	Apr. 30, 2024	Oct. 31, 2023	May 31, 2023	Jan. 31, 2023	Dec. 31, 2022	Nov. 30, 2022	Oct. 31, 2021	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2018	Dec. 31, 1988	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2022
Accounts Payable, Current				$ 1,314,661													$ 1,314,661		$ 1,566,745
Regulatory Liability, Noncurrent				3,488,314													3,488,314		3,116,926
System Energy [Member]
Accounts Payable, Current				43,623													43,623		73,580
Regulatory Liability, Noncurrent				$ 668,309													668,309		782,912
System Energy [Member] | Unit Power Sales Agreement Complaint [Member]
Regulatory Liability, Noncurrent																			178,000
System Energy [Member] | Entergy Arkansas [Member] | Unit Power Sales Agreement Complaint [Member]
Payments for Legal Settlements					$ 92,000
System Energy [Member] | Grand Gulf [Member] | Entergy New Orleans [Member]
Public Utilities, Approved Return on Equity, Percentage				9.65%
Public Utilities, Approved Equity Capital Structure, Percentage				52.00%
System Energy [Member] | Grand Gulf [Member] | Entergy Louisiana [Member] | Subsequent Event [Member]
Public Utilities, Approved Return on Equity, Percentage		9.65%
Public Utilities, Approved Equity Capital Structure, Percentage		52.00%
Entergy Louisiana [Member]
Accounts Payable, Current				$ 406,932													406,932		467,414
Regulatory Liability, Noncurrent				1,692,861													1,692,861		1,407,689
Entergy New Orleans [Member]
Accounts Payable, Current				38,150													38,150		39,813
Regulatory Liability, Noncurrent				259,613													259,613		90,434
Entergy Arkansas [Member]
Payments for Legal Settlements															$ 135,000
Accounts Payable, Current				196,722													196,722		215,502
Regulatory Liability, Noncurrent				803,680													803,680		$ 759,181
Return on Equity and Capital Structure Complaints [Member] | System Energy [Member]
Earned return on equity													10.94%
Recommended adjustment to earned return on equity													9.32%
Estimated return on equity complaint refund				25,300													25,300
Return on equity complaint, estimated annual rate reduction				15,000													15,000
Return on Equity and Capital Structure Complaints [Member] | System Energy [Member] | Maximum [Member]
ALJ recommended equity capital structure, percentage													48.15%
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | System Energy [Member]
Disallowance of future sale-leaseback renewal costs recovery										$ 11,500
Calculated refund of sale-leaseback renewal rental costs, including interest									$ 89,800
One-time accumulated deferred income tax credit														$ 25,200
Calculated net refund for excess depreciation expense									13,700
Payments for Legal Settlements									$ 103,500
Recalculated Payments for Legal Settlements							$ 35,700
Recalculated proceeds from legal settlements							67,800
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | System Energy [Member] | Entergy Arkansas [Member]
Recalculated proceeds from legal settlements							27,300
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | System Energy [Member] | Grand Gulf [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage																11.50%
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | Entergy Louisiana [Member] | System Energy [Member]
Payments for Legal Settlements							18,200
Grand Gulf Sale-leaseback Renewal Complaint and Uncertain Tax Position Rate Base Issue [Member] | Entergy New Orleans [Member] | System Energy [Member]
Payments for Legal Settlements							22,300
Unit Power Sales Agreement Complaint [Member] | System Energy [Member]
Potential settlement refund											$ 18,000
FERC ALJ initial decision recommended refunds																	69,900
Interest component of FERC ALJ initial decision recommended refunds																	$ 97,800
FERC ALJ initial decision modification to cash working capital allowance								$ 36,400
System Energy Settlement with the APSC [Member] | System Energy [Member]
Regulatory liabilitity related to settlements and potential future refunds																				$ 588,000
System Energy Settlement with the APSC [Member] | System Energy [Member] | Entergy Arkansas [Member]
Public Utilities, Approved Return on Equity, Percentage	9.65%
Public Utilities, Approved Equity Capital Structure, Percentage	52.00%
System Energy Settlement with the APSC [Member] | Entergy Arkansas [Member]
Cumulative proceeds from legal settlements							142,000
Proceeds from Legal Settlements							$ 49,500
System Energy Settlement with the City Council [Member] | System Energy [Member]
Regulatory liabilitity related to settlements and potential future refunds																				588,000
System Energy Settlement with the City Council [Member] | System Energy [Member] | Entergy New Orleans [Member] | Unit Power Sales Agreement Complaint [Member]
Accounts Payable, Current																		$ 98,000
System Energy Settlement with the City Council [Member] | Entergy New Orleans [Member]
Cumulative proceeds from legal settlements						$ 116,000
Proceeds from Legal Settlements						$ 18,000
System Energy Settlement with the City Council [Member] | Entergy Arkansas and and Entergy Mississippi | Grand Gulf [Member]
Long-Term Contract for Purchase of Electric Power, Share of Plant Output Being Purchased																	65.00%
System Energy Settlement with the City Council [Member] | Entergy Arkansas and Entergy Mississippi and Entergy New Orleans [Member] | Grand Gulf [Member]
Long-Term Contract for Purchase of Electric Power, Share of Plant Output Being Purchased																	85.00%
System Energy Settlement with the LPSC | System Energy [Member]
Regulatory liabilitity related to settlements and potential future refunds																				$ 588,000
System Energy Settlement with the LPSC | System Energy [Member] | Entergy Louisiana [Member] | Unit Power Sales Agreement Complaint [Member]
Accounts Payable, Current				$ 80,000													$ 80,000
System Energy Settlement with the LPSC | Entergy Louisiana [Member] | Subsequent Event [Member]
Cumulative proceeds from legal settlements			$ 95,000
Proceeds from Legal Settlements			$ 15,000
Pension Costs Amendment Proceeding [Member] | System Energy [Member]
Public Utilities, Requested Rate Increase (Decrease), Amount												$ 8,900