Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Narrative) (Details) - USD ($) $ in Millions	1 Months Ended						4 Months Ended	9 Months Ended
	Dec. 31, 2029	Aug. 31, 2024	Jun. 30, 2024	May 31, 2024	Apr. 30, 2024	Mar. 31, 2024	Oct. 31, 2024	Sep. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount								$ 2.0	$ 2.0
Junior subordinated debentures due December 2054
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 1,200.0
Debt Instrument, Interest Rate, Stated Percentage				7.125%
Commercial Paper [Member]
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate								5.64%
Commercial Paper program limit								$ 2,000.0
Commercial Paper								1,122.4
Entergy Arkansas [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings								250.0
Entergy Arkansas [Member] | 5.45% Series mortgage bonds due June 2034
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 400.0
Debt Instrument, Interest Rate, Stated Percentage				5.45%
Entergy Arkansas [Member] | 5.75% Series mortgage bonds due June 2054
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 400.0
Debt Instrument, Interest Rate, Stated Percentage				5.75%
Entergy Arkansas [Member] | 3.70% Series mortgage bonds due June 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.70%
Repayments of Debt			$ 375.0
Entergy Louisiana [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings								450.0
Entergy Louisiana [Member] | Mortgage Bonds 5.35% Series due March 2034 [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt						$ 500.0
Debt Instrument, Interest Rate, Stated Percentage						5.35%
Entergy Louisiana [Member] | Mortgage Bonds 5.70% Series due March 2054 [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt						$ 700.0
Debt Instrument, Interest Rate, Stated Percentage						5.70%
Entergy Louisiana [Member] | Mortgage Bonds 5.40% Series due November 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					5.40%
Repayments of Debt					$ 400.0
Entergy Louisiana [Member] | Mortgage Bonds 0.95% Series due October 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.95%
Repayments of Debt		$ 1,000.0
Entergy Louisiana [Member] | 5.15% Series mortgage bonds due September 2034
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 700.0
Debt Instrument, Interest Rate, Stated Percentage		5.15%
Entergy Mississippi [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings								200.0
Entergy Mississippi [Member] | 5.85% Series mortgage bonds due June 2054
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 300.0
Debt Instrument, Interest Rate, Stated Percentage				5.85%
Entergy Mississippi [Member] | 3.75% Series mortgage bonds due July 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			3.75%
Repayments of Debt			$ 100.0
Entergy Texas [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings								200.0
Entergy Texas [Member] | 5.55% Series mortgage bonds due September 2054
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 350.0
Debt Instrument, Interest Rate, Stated Percentage		5.55%
System Energy [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings								200.0
Entergy New Orleans [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings								$ 150.0
Entergy New Orleans [Member] | Total amount of mortgage bonds to be issued under bond purchase agreement [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 150.0
Entergy New Orleans [Member] | Mortgage Bonds 6.25% Series due June 2029 [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 35.0
Debt Instrument, Interest Rate, Stated Percentage				6.25%
Entergy New Orleans [Member] | Mortgage Bonds 6.41% Series due June 2031 [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 65.0
Debt Instrument, Interest Rate, Stated Percentage				6.41%
Entergy New Orleans [Member] | Mortgage Bonds 6.54% Series due June 2034 [Member]
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 50.0
Debt Instrument, Interest Rate, Stated Percentage				6.54%
Entergy New Orleans [Member] | 6.25% Unsecured Term Loan due June 2024 [Member]
Debt Instrument [Line Items]
Repayments of Debt			$ 85.0
System Energy VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage								0.10%
Entergy Arkansas VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage								0.10%
Entergy Louisiana Waterford VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage								0.10%
Entergy Louisiana River Bend VIE [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage								0.10%
Maximum [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.375%
Ratio of Indebtedness to Net Capital								0.65
Consolidated debt ratio of lessees total capitalization								70.00%
Maximum [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.375%
Ratio of Indebtedness to Net Capital								0.65
Consolidated debt ratio of lessees total capitalization								70.00%
Maximum [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.375%
Ratio of Indebtedness to Net Capital								0.65
Maximum [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.375%
Ratio of Indebtedness to Net Capital								0.65
Maximum [Member] | System Energy [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital								0.65
Consolidated debt ratio of lessees total capitalization								70.00%
Maximum [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.375%
Ratio of Indebtedness to Net Capital								0.65
Minimum [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.075%
Minimum [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.075%
Minimum [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.075%
Minimum [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.075%
Minimum [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage								0.075%
Subsequent Event [Member] | Junior subordinated debentures due December 2054
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Basis for Effective Rate	2.67
Subsequent Event [Member] | Entergy Louisiana [Member] | Mortgage Bonds 0.95% Series due October 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							0.95%
Repayments of Debt							$ 1,000.0
Credit Facility of $139 Million [Member] | Entergy Nuclear Vermont Yankee [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity								$ 139.0
Line of Credit Facility, Commitment Fee Percentage								0.20%
Long-Term Line of Credit								$ 139.0
Debt, Weighted Average Interest Rate								6.93%
Credit Facility of $3 Billion
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity								$ 3,000.0
Letters of Credit Outstanding, Amount								$ 4.0
Line of Credit Facility, Commitment Fee Percentage								0.225%
Long-Term Line of Credit								$ 0.0
Line of Credit Facility, Remaining Borrowing Capacity								2,996.0
Amount of total borrowing capacity against which fronting commitments exist for the issuance of letters of credit								$ 20.0
Line of Credit Facility, Interest Rate at Period End								6.45%
Credit Facility of $3 Billion | Maximum [Member]
Debt Instrument [Line Items]
Ratio of Indebtedness to Net Capital								0.65