Revolving Credit Facilities, Lines Of Credit, Short-Term Borrowings, And Long-Term Debt (Narrative) (Details) $ in Thousands	1 Months Ended							9 Months Ended
	Sep. 30, 2023 USD ($)	Aug. 31, 2023 USD ($)	Jul. 31, 2023 USD ($)	May 31, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jan. 31, 2023 USD ($)	Nov. 30, 2021 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Debt Instrument [Line Items]
Amount of Facility	$ 3,500,000							$ 3,500,000
Amount Drawn/ Outstanding	0							0
Letters Of Credit	3,000							3,000
Line of Credit Facility, Remaining Borrowing Capacity	$ 3,497,000							$ 3,497,000
Commercial Paper Program [Member]
Debt Instrument [Line Items]
Debt, weighted average interest rate	5.35%							5.35%
Commercial Paper program limit	$ 2,000,000							$ 2,000,000
Commercial Paper Amount Outstanding	1,351,100							1,351,100
Credit Facility [Member]
Debt Instrument [Line Items]
Amount of Facility	3,500,000							3,500,000
Amount of total borrowing capacity against which fronting commitments exist	20,000							$ 20,000
Line of credit facility, commitment fee percentage								0.225%
Line of Credit Facility, Interest Rate During Period								6.44%
Entergy Arkansas [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	250,000							$ 250,000
Amount of total borrowing capacity against which fronting commitments exist	5,000							5,000
Letters of Credit Outstanding, Amount	1,700							1,700
Entergy Arkansas [Member] | 5.15% Series mortgage bonds due January 2033
Debt Instrument [Line Items]
Proceeds from Issuance of Debt						$ 425,000
Debt instrument, interest rate, stated percentage						5.15%
Entergy Arkansas [Member] | Mortgage Bonds Three Point Zero Five Percent Series Due June Two Thousand Twenty Three
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage						3.05%
Repayments of Debt						$ 250,000
Entergy Arkansas [Member] | 5.30% Series mortgage bonds due September 2033
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 300,000
Debt instrument, interest rate, stated percentage		5.30%
Entergy Louisiana [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	450,000							450,000
Amount of total borrowing capacity against which fronting commitments exist	15,000							15,000
Letters of Credit Outstanding, Amount	$ 900							$ 900
Entergy Louisiana [Member] | 4.05% Series Mortgage Bonds due September 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.05%							4.05%
Repayments of Debt	$ 325,000
Entergy Mississippi [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	200,000							$ 200,000
Letters of Credit Outstanding, Amount	600							600	$ 200
Non-MISO letter of credit outstanding	1,000							1,000
Entergy Mississippi [Member] | 5.0% Series mortgage bonds due September 2033
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 300,000
Debt instrument, interest rate, stated percentage				5.00%
Entergy Mississippi [Member] | 3.10% Series mortgage bonds due July 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage				3.10%
Repayments of Debt				$ 250,000
Entergy Mississippi [Member] | Unsecured Term Loan due December 2023
Debt Instrument [Line Items]
Repayments of Debt				50,000
Entergy Texas [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	200,000							200,000
Amount of total borrowing capacity against which fronting commitments exist	30,000							30,000
Letters of Credit Outstanding, Amount	500							500	2,400
Entergy Texas [Member] | 5.80% Series mortgage bonds due September 2053
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 350,000
Debt instrument, interest rate, stated percentage		5.80%
System Energy [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	200,000							200,000
System Energy [Member] | 6.00% Series mortgage bonds due April 2028
Debt Instrument [Line Items]
Proceeds from Issuance of Debt					$ 325,000
Debt instrument, interest rate, stated percentage					6.00%
System Energy [Member] | Unsecured Term Loan due November 2023
Debt Instrument [Line Items]
Repayments of Debt					$ 50,000
System Energy [Member] | 4.10% Series mortgage bonds due April 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage					4.10%
Repayments of Debt					$ 250,000
Entergy New Orleans [Member]
Debt Instrument [Line Items]
Authorized Short Term Borrowings	150,000							150,000
Amount of total borrowing capacity against which fronting commitments exist	10,000							10,000
Letters of Credit Outstanding, Amount									200
Amount	8,279							8,279	$ 8,279
Entergy New Orleans [Member] | Unsecured term loan due June 2024
Debt Instrument [Line Items]
Proceeds from Issuance of Debt				$ 15,000
Debt instrument, interest rate, stated percentage				6.25%
Entergy New Orleans [Member] | Unsecured term loan due May 2023
Debt Instrument [Line Items]
Proceeds from Issuance of Debt							$ 70,000
Debt instrument, interest rate, stated percentage							2.50%
Entergy New Orleans [Member] | 3.90% Series mortgage bond due July 2023
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage			3.90%
Repayments of Debt			$ 100,000
System Energy VIE [Member]
Debt Instrument [Line Items]
Amount Drawn/ Outstanding	29,200							$ 29,200
Line of Credit Facility, Interest Rate During Period								5.90%
Line of credit facility commitment fee as a percentage of undrawn commitment amount								0.10%
Entergy Arkansas VIE [Member]
Debt Instrument [Line Items]
Amount Drawn/ Outstanding	10,600							$ 10,600
Line of Credit Facility, Interest Rate During Period								6.03%
Line of credit facility commitment fee as a percentage of undrawn commitment amount								0.10%
Entergy Louisiana Waterford VIE [Member]
Debt Instrument [Line Items]
Amount Drawn/ Outstanding	13,900							$ 13,900
Line of Credit Facility, Interest Rate During Period								6.04%
Line of credit facility commitment fee as a percentage of undrawn commitment amount								0.10%
Entergy Louisiana River Bend VIE [Member]
Debt Instrument [Line Items]
Amount Drawn/ Outstanding	57,100							$ 57,100
Line of Credit Facility, Interest Rate During Period								6.08%
Line of credit facility commitment fee as a percentage of undrawn commitment amount								0.10%
Entergy Nuclear Vermont Yankee
Debt Instrument [Line Items]
Amount of Facility	139,000							$ 139,000
Amount Drawn/ Outstanding	$ 139,000							$ 139,000
Debt, weighted average interest rate	6.47%							6.47%
Line of credit facility commitment fee as a percentage of undrawn commitment amount								0.20%
Maximum [Member]
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage								0.375%
Consolidated debt ratio	0.65							0.65
Maximum [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Consolidated debt ratio	0.65							0.65
Consolidated debt ratio of total capitalization								70.00%
Maximum [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Consolidated debt ratio	0.65							0.65
Consolidated debt ratio of total capitalization								70.00%
Maximum [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Consolidated debt ratio	0.65							0.65
Maximum [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Consolidated debt ratio	0.65							0.65
Maximum [Member] | System Energy [Member]
Debt Instrument [Line Items]
Consolidated debt ratio	0.65							0.65
Consolidated debt ratio of total capitalization								70.00%
Maximum [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Consolidated debt ratio	0.65							0.65
Minimum [Member]
Debt Instrument [Line Items]
Line of credit facility, commitment fee percentage								0.075%
Credit Facility Of Three Hundred Fifty Million [Member] | Entergy Louisiana [Member]
Debt Instrument [Line Items]
Amount of Facility	$ 350,000							$ 350,000
Letters of Credit Outstanding, Amount	0							0
Amount Drawn/ Outstanding	0							$ 0
Line of Credit Facility, Interest Rate During Period								6.67%
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Amount of Facility	150,000							$ 150,000
Letters of Credit Outstanding, Amount	0							0
Amount Drawn/ Outstanding	0							$ 0
Line of Credit Facility, Interest Rate During Period								6.54%
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Amount of Facility	150,000							$ 150,000
Letters of Credit Outstanding, Amount	0							0
Amount Drawn/ Outstanding	0							$ 0
Line of Credit Facility, Interest Rate During Period								6.54%
Credit Facility Of One Hundred And Fifty Million [Member] | Entergy Texas [Member]
Debt Instrument [Line Items]
Amount of Facility	150,000							$ 150,000
Letters of Credit Outstanding, Amount	1,100							1,100
Amount Drawn/ Outstanding	0							$ 0
Line of Credit Facility, Interest Rate During Period								6.67%
Credit Facility Of Twenty Five Million [Member] | Entergy Arkansas [Member]
Debt Instrument [Line Items]
Amount of Facility	25,000							$ 25,000
Letters of Credit Outstanding, Amount	0							0
Amount Drawn/ Outstanding	0							$ 0
Line of Credit Facility, Interest Rate During Period								7.27%
Credit Facility Of Twenty Five Million [Member] | Entergy New Orleans [Member]
Debt Instrument [Line Items]
Amount of Facility	25,000							$ 25,000
Letters of Credit Outstanding, Amount	0							0
Amount Drawn/ Outstanding	0							$ 0
Line of Credit Facility, Interest Rate During Period								7.04%
Credit Facility of Sixty Five Million [Member] | Entergy Mississippi [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	6,700							$ 6,700
Uncommitted Credit Facility	$ 65,000							$ 65,000